reinit notebook depot

2020-11-26 18:38:25 +01:00 · 2020-11-26 18:38:25 +01:00 · ac403f2028
commit ac403f2028
109 changed files with 5118 additions and 0 deletions
--- a/.gitignore
+++ b/.gitignore
@ -0,0 +1,7 @@
+todoist
+Quicknote.md
+_docs
+site
+_build
+note
+logbook.md
--- a/Cuisine/idee
+++ b/Cuisine/idee
@ -0,0 +1,56 @@
+# Idee Cuisine
+
+## quotidien
+- Pâte bolo
+- Pâte carbo
+- Pâte au saumon chaud
+- Pate saumon surimi froid
+- Pate facon risotto copa champigon
+- Pate facon risotto crevette
+- Ravioli
+- Rissoto
+- Escalope à la crème
+- Gratin dauphinois
+- Salade
+- Pizza
+- Lasagne saumon ou bœuf
+- Steak haché/cordon bleue
+- Steak pomme de terre
+- Ouef à la cocq
+- Salade de riz au thon
+- Salade composée
+- Omelette
+- Wrap
+- Ouef au thon
+- Oeuf dur aumon fume
+- Quiche
+- Croque monsieur
+- Pain perdu
+- mont d or
+- tardine gourmande
+- Enchiladas
+- Enchiladas saumon
+- terrine surimi
+- vol au vent
+
+
+
+## sauce
+- bechamel
+- vinaigrette
+- sauce au poivre
+- Sauce au maroile
+- sauce a l'oseille
+
+# preparer
+- Casoulet
+- Chilicon carne
+- filet mignon
+- poulet roti
+- carbonnade
+- joue de porc
+- roti orloff
+
+# desert
+- clafoutie au pomme
+-  mouse de fraise
--- a/Divers/index.md
+++ b/Divers/index.md
@ -0,0 +1,3 @@
+[site permettant d'avoir les prox d'achat de masion ou terrain](https://app.dvf.etalab.gouv.fr)
+
+[liste api public](https://github.com/public-apis/public-apis)
--- a/Divers/joke.md
+++ b/Divers/joke.md
--- a/Divers/lien/OpenData.md
+++ b/Divers/lien/OpenData.md
@ -0,0 +1,7 @@
+# OpenData Link
+
+[Visualisation budget France](https://budget.parlement-ouvert.fr/visualisation)
+
+[Versionning git  code de lois](https://archeo-lex.fr/codes)
+
+[fabrique de la lois](https://www.lafabriquedelaloi.fr/)
--- a/Divers/lien/index.md
+++ b/Divers/lien/index.md
@ -0,0 +1,3 @@
+[site permettant d'avoir les prox d'achat de masion ou terrain](https://app.dvf.etalab.gouv.fr)
+
+[liste api public](https://github.com/public-apis/public-apis)
--- a/Divers/lien/mental_model.md
+++ b/Divers/lien/mental_model.md
@ -0,0 +1,9 @@
+# Mental Model
+## Links
+
+- [Ask HN: Which books teach mental models?](https://news.ycombinator.com/item?id=19895407)
+- [Mental Models: The Best Way to Make Intelligent Decisions (109 Models Explained)](https://fs.blog/mental-models/)
+- [The Great Mental Models Project](https://fs.blog/tgmm/) - Equalize opportunity in the world by making a high-quality multidisciplinary, interconnected, education free and available to everyone.
+- [Model Thinking Course](https://www.coursera.org/learn/model-thinking)
+- [The Power of Incentives: Inside the Hidden Forces That Shape Behavior](https://fs.blog/2017/10/bias-incentives-reinforcement/)
+- [Mental Models I Find Repeatedly Useful (2016)](https://medium.com/@yegg/mental-models-i-find-repeatedly-useful-936f1cc405d)
--- a/citation/citation.md
+++ b/citation/citation.md
@ -0,0 +1,3 @@
+>Se vouloir libre, c'est aussi vouloir les autres libres
+
+ simone de beauvoir
--- a/citation/eldorado.md
+++ b/citation/eldorado.md
@ -0,0 +1,26 @@
+Un chevalier
+ sur son coursier,
+ jour et nuit au grand galop
+, courut longtemps
+ tout en chantant. 
+Il cherchait l'El Dorado, 
+au-delà des monts 
+les plus hauts,
+ dans les profondeurs de la terre, 
+poursuivant sa chimère !
+ 
+A moitié mort, 
+marchant encore, 
+il vit une ombre au grand galop.
+ Il lui cria, "
+Ombre dis-moi, suis-je encore loin d'El Dorado ?
+" 
+"
+ 
+Au-delà des monts
+ les plus hauts, 
+dans les profondeurs de la terre,
+ chevauche sans repos,
+ dit l'ombre solitaire, 
+si tu cherches El Dorado !
+" 
--- a/citation/littanie_contre_la_peur.md
+++ b/citation/littanie_contre_la_peur.md
@ -0,0 +1,4 @@
+Je ne connaîtrai pas la peur, car la peur tue l'esprit. La peur est la petite mort qui conduit à l'oblitération totale. J'affronterai ma peur. Je lui permettrai de passer sur moi, au travers de moi. Et lorsqu'elle sera passée, je tournerai mon œil intérieur sur son chemin. Et là où elle sera passée, il n'y aura plus rien. Rien que moi.
+
+ I must not fear. Fear is the mind-killer. Fear is the little-death that brings total obliteration. I will face my fear. I will permit it to pass over me and through me. And when it has gone past I will turn the inner eye to see its path. Where the fear has gone there will be nothing. Only I will remain.
+
--- a/citation/replique.md
+++ b/citation/replique.md
@ -0,0 +1,18 @@
+# replique
+
+- C'est Pas piquer des hanneton
+- on est pas la pour embrasser la princesse
+- on est pas la pour enfiller des perles
+- On n'est pas là pour sucer des glaçons
+
+## audiart
+- Le jour où on mettra les cons sur orbite, t'as pas fini de tourner
+- Les cons, ça ose tout. C'est même à ça qu'on les reconnaît
+- Dans la vie on partage toujours les emmerdes, jamais le pognon.
+
+## inspecteur harry
+
+>  - Lorsque je vois un adulte du sexe masculin courir derrière une femelle avec l’intention évidente de la violer, je le descends avant, c’est ma politique.
+>  - L’intention ? Elle restait à établir.
+>  - Quand un gars à poil court derrière une fille la queue en l’air avec un couteau de boucher à la main, c’est drôle, j’ai peine à croire qu’il est en train de quêter pour la croix rouge. 			
+- les avis c'est comme les trous du cul tout le monde en a un
--- a/citation/republique-alamo.md
+++ b/citation/republique-alamo.md
@ -0,0 +1 @@
+République. J’aime le son de ce mot. Il signifie que les gens peuvent vivre libres, parler comme bon leur semble, aller et venir, acheter ou vendre, s’enivrer ou rester sobres, selon leurs désirs. Certains mots vous font vibrer. République est l’un de ces mots qui me nouent la gorge – la même sensation qui s’empare du père voyant voit son bébé faire ses premiers pas ou son premier enfant entreprendre de se raser et parler comme un homme. Certains mots vous réchauffent le cœur. République est l’un de ces mots.
--- a/citation/voyez_cela.md
+++ b/citation/voyez_cela.md
@ -0,0 +1,4 @@
+Voyez cela je vois mon père.
+Voyez cela je vois ma mère et mes sœurs et mes frères.
+Voyez cela je vois tous mes ancêtres qui sont assis et me regardent.
+Et voilà, voilà qu’ils m’appellent et me demandent de prendre place à leurs côtés dans le palais de Valhalla là ou les braves vivent à jamais.
--- a/IT/JS/index.md
+++ b/IT/JS/index.md
@ -0,0 +1 @@
+[Javascript without JQuery](https://github.com/nefe/You-Dont-Need-jQuery)
--- a/IT/JS/vuejs.md
+++ b/IT/JS/vuejs.md
--- a/IT/SQL/(protegé)Memento
+++ b/IT/SQL/(protegé)Memento
--- a/IT/SQL/66Classeur1.pdf
+++ b/IT/SQL/66Classeur1.pdf
--- a/IT/SQL/FormationSQL.md
+++ b/IT/SQL/FormationSQL.md
@ -0,0 +1,784 @@
+# formation SQL SERVER
+
+<!-- @import "[TOC]" {cmd="toc" depthFrom=1 depthTo=6 orderedList=false} -->
+
+<!-- code_chunk_output -->
+
+- [formation SQL SERVER](#formation-sql-server)
+  - [Vocabulaire](#vocabulaire)
+  - [historique de SQL server](#historique-de-sql-server)
+  - [Particularité de SQL Server](#particularité-de-sql-server)
+  - [nature des SGBDR](#nature-des-sgbdr)
+  - [conception de Codd](#conception-de-codd)
+    - [relation](#relation)
+    - [attributs](#attributs)
+    - [atomicité](#atomicité)
+  - [algébre relationell](#algébre-relationell)
+  - [migration de base](#migration-de-base)
+  - [instaltion/Configuration](#instaltionconfiguration)
+    - [patch](#patch)
+    - [choix immuable lors de l'instalation](#choix-immuable-lors-de-linstalation)
+    - [different service](#different-service)
+    - [instance](#instance)
+      - [configuration minimal](#configuration-minimal)
+    - [configuration Base](#configuration-base)
+    - [base system](#base-system)
+    - [renomer un serveur SQL](#renomer-un-serveur-sql)
+  - [outils](#outils)
+    - [SQLcmd.exe](#sqlcmdexe)
+  - [table d'admin](#table-dadmin)
+    - [sys.object](#sysobject)
+    - [table instance](#table-instance)
+    - [table base](#table-base)
+  - [stockage](#stockage)
+    - [groupe de fichier](#groupe-de-fichier)
+    - [definition de fichier](#definition-de-fichier)
+    - [planification de capacité](#planification-de-capacité)
+    - [disque](#disque)
+      - [SSD](#ssd)
+      - [machine virtuel](#machine-virtuel)
+      - [reduction de fichier](#reduction-de-fichier)
+    - [transaction](#transaction)
+    - [partitionnement](#partitionnement)
+  - [Type](#type)
+  - [Collonne calculée](#collonne-calculée)
+  - [Snapshot](#snapshot)
+  - [import export](#import-export)
+    - [Bulk INSERT](#bulk-insert)
+    - [SSIS](#ssis)
+  - [Schema SQL](#schema-sql)
+  - [Securité](#securité)
+    - [compte connexion](#compte-connexion)
+    - [Utilisateur SQL](#utilisateur-sql)
+    - [privilége](#privilége)
+    - [roles](#roles)
+  - [chifrement](#chifrement)
+  - [Tache d'administratrion](#tache-dadministratrion)
+    - [agent SQL](#agent-sql)
+      - [Database Mail](#database-mail)
+    - [Travaux](#travaux)
+    - [monitoring](#monitoring)
+      - [disque](#disque-1)
+      - [transaction](#transaction-1)
+      - [cache](#cache)
+    - [DBCC](#dbcc)
+      - [integrité des bases](#integrité-des-bases)
+      - [réparation base endommagée](#réparation-base-endommagée)
+  - [index](#index)
+  - [Sauvegarde](#sauvegarde)
+    - [mode de récupération](#mode-de-récupération)
+    - [syntaxe de commande](#syntaxe-de-commande)
+    - [Urgence](#urgence)
+    - [multifichier](#multifichier)
+    - [compresioon](#compresioon)
+    - [lire une sauvegarde](#lire-une-sauvegarde)
+  - [surveillance et performance](#surveillance-et-performance)
+    - [Historisation des données](#historisation-des-données)
+    - [verrouillages et blocages](#verrouillages-et-blocages)
+
+<!-- /code_chunk_output -->
+
+[benchmark professionnelle](http://www.tpc.org/information/benchmarks.asp)
+
+## Vocabulaire
+
+- SGBD:Système de gestion de base de données
+- page: unité de stockage minimal de 8ko
+- schema SQL: unité de stockage logique  conteneur d'objet relationnelle (dbo est un schema) = namespace
+- extention: block de 8 pages = 64ko
+- lobs: large object
+
+GO: séparateur de batch qui s'adresse au client il execute les requéte d'avant pour être sur que la requête c'est bien éxecuter
+over():
+
+## historique de SQL server
+
+1974: ingres
+1984: sybase (premier SGBD client serveur)
+1988: accord sysbase/microsoft
+1989: sortie de SQL server Unix
+1993: rupture avec sysbase sortie de la premiére version de SQL server full windows
+1999: version 7 premiére version professionnelle
+2005: refonte monté en gamme
+2012: SQL server devient plus performant que oracle
+
+## Particularité de SQL Server
+
+- information Schema: select * from information_Schema.Tables -> permet d'avoir la liste des tables
+
+- multischema: chaque base peu contenire un nombre indeterminé de schema
+
+- posibilité de requéter des base sur le meme serveur (oracle postgress foive utilisé un dblink)
+- chaque base dispose son journal de transaction (oracle postgress un journal pour tous)
+
+- transaction: lot de commande
+- In Memory: plus d'écriture dans le journal de transaction (a utilisé en mode hight availlibility)
+- strecht table: stockage de table dans le cloud
+
+## nature des SGBDR
+
+## conception de Codd
+
+- Séparation HArdware/logique
+- algébre relationelle
+- insersion supression modification emsembliste (peut mettre a jour plusieur donné dans une seule requête)
+
+### relation
+
+- posséde un nom
+- possésde une collection d'attributs
+- posséde une clef primaire
+- peut posséder d'autre clefs
+- valeur atomique
+- **pas de relation sans clef primaire**
+
+### attributs
+
+- non unique au sein de la relation
+- **pas de null**
+- fait partie d'un domaine (valeur possible de l'attribut)
+
+### atomicité
+
+donnée atomique: ne peut pas être subdiviser sans perte de sens
+en base de donné il faut stockés les donnés au maximum de facon atomique (exemple un numéro de sécurité social est divisable en plusieurs informations)
+
+## algébre relationell
+
+**pas de jointure dans le where**
+ordre d'exécution des requétes: *from,where,group by,having,select,orderby*
+
+## migration de base
+
+- de 7 a 2000
+- 2000 a 2005 ou 2008
+- 2005 - now
+
+## instaltion/Configuration
+
+- classement: french point de code binaire
+- authent: mode mix
+- **formatage du disque en cluster de 64KO pour s'aligner sur la taille de l'unité d'extention**
+- pas de raid 5 6 faut mieux se limiter au raid 0 1 10
+- **pas d'outil instalé sur le serveur**
+
+### patch
+
+- <2016 attendre la demande de microsft
+- \>2016 faire au plus vite
+
+### choix immuable lors de l'instalation
+
+- répertoire des exe
+- répertoire base systeme
+- collation de base
+
+### different service
+
+- SQL server Broswer: permet de naviger dans les instance par non au lieux de port (recommandé de désactiver sur la prod)
+- gérée les service via SQL Server Configuration Manager
+
+### instance
+
+- port 1433 si une seul instance
+- **Ne jamais redemmarrer une instance sauf absolue neccesité**
+
+#### configuration minimal
+
+- max server memory
+- cost threshold for parallelism -> cout pour que le moteur étudie le paralémlisme ->min 12 sur PC perso, 25 et 100 sur prod
+- max degree of parrallelism -> nombre maximum de thread parralléle recommandation sur grosse machine 1/4 des coeur -1 sur du transactionnelle, plus sur du decissionelle
+- optimize for ad hoc workloads:1
+- Backup compression default:1 gain sur la vitesse de compression cpu vs vitesse écriture disque sauf si base sont setter en 'transparente data encryption' (chiffrage des fichier de la base)
+- Backup checksum default',1
+
+### configuration Base
+
+**ne jamais mettre en ON:**
+
+- AUTO_CLOSE
+- AUTO_SHRINK
+
+**mettre a ON:**
+
+- AUTO_CREATE_STATISTICS
+- AUTO_UPDATE_STATISTICS
+- pour version entreprise: AUTO_UPDATE_STATISTICS_ASYNC
+
+activé l'autonomie partielle pemet de créer des compte user dédiéet de réglé des probléme de collation
+
+```SQL
+ALTER DATABASE [DB_GRAND_HOTEL] SET CONTAINMENT = PARTIAL WITH NO_WAIT
+```
+
+### base system
+
+**visible:**
+
+- master: liste des bases,connexions,lessage d'erreur (a sauvegarder impérativement tous les jour)
+- model: template pour création des basrs
+- msdb: gestion des travaux SQL SERVER  (a sauvegarder impérativement tous les jour)
+- tempdb: objet temporaire
+
+**invisible:**
+
+- mssqlsystemresource: routine systéme
+
+**optionel:**
+
+- ditribution (réplication)
+- semanticdb (recherche sémantique)
+
+### renomer un serveur SQL
+
+- renomer le serveur au niveau de windows
+- changer le nom dans master
+
+  ```SQL
+  select * from sys.servers
+  exec sp_dropserver ''
+  exec sp_addserver '', local
+  ```
+
+- redemmarré le service
+
+## outils
+
+- SQL server Management Studio (ne pas utilisé sur une instance deffectueuse)
+- SentryONe Plan Explorer (add on permetant d'améliorer le plan d'éxécution des requête)
+- Gestionnaire de configuration SQL Server
+- apexlog visualisation de log
+
+### SQLcmd.exe
+
+utilitaire en ligne de commande
+option:
+
+- *-S* nom du serveur
+- *-U" login
+- *-P* MDP
+- *-E* Sécurité intégré windows
+- *-q* tamponne unse requéte (go pour lancer)
+- *-Q* lance une requête
+- *-A* mode DAC (Dedicated Administrative Connector) connection d'urgence permet de mobiliser les resource pour la connection a utiliser en local
+
+## table d'admin
+
+### sys.object
+
+- contient tous les objet de la base
+- *is_ms_shipped* permet de voir les objet system
+
+### table instance
+
+- sys.servers
+- sys.databases
+- sys.master_files
+- sys.configuration
+
+### table base
+
+- sys.table
+- sys.schema
+- sys.database_files
+- sys.indexes
+- sys.index_column
+- sys.stats
+
+## stockage
+
+considérer les fichier comme si s'était  des disque d'OS
+deux fichier:
+
+- mdf fichier de donnée (Master Data File)
+- ldf journal de transaction (Log Data File)
+
+### groupe de fichier
+
+possibilité de cré diferent group de fichier pour la même base par example
+mettre les collonnes purement relationelle dans un group dans un groupe de fichier X
+mettre les donné de type blob dans un groupe de fichier spécifique
+
+### definition de fichier
+
+name
+filename
+Size
+MaxSize
+Filegrowth
+
+- les taille sont exprimé en KB,MB,GB
+- pas de croisance en pourcentage.
+
+### planification de capacité
+
+- journale de transaction 20% des donnée pour les grosse base,40% pour les petitte
+- ne pas placez les table ddans le groupe primary
+- creer un groupe de fichier blob
+- créer plusieur fichier par groupe de fichier en fonction de disques physique
+
+### disque
+
+- raid 0 ou 1 uniquement
+
+#### SSD
+
+optmisation des écriture necesaire **need disk write intensive**
+
+#### machine virtuel
+
+vaux mieux utiliser le stockage non virtuel
+non recommandé pour utilisation particuliére
+
+#### reduction de fichier
+
+DBCC SHRINKFILE
+options:
+
+- EMPTYFILE: permet de vider le fichier (besoin d'un autre fichier dans le groupfile pour transférer les donnés)
+
+### transaction
+
+aficher le journal de transaction
+`select * from sys.fn_dblog(null, null)`
+
+fichier de transaction est le plus sensible a la  vitesse d'écriture
+
+3 mode de journalisation:
+
+- Full: journalisation max, aucune purge
+- BULK logged:  journalisation min, aucune purge
+- Simple: journalisation min, purge auto
+les deux premier necesitte des savegarde transactionelle pour purger
+
+dans base transactionelle utilisé le mode full
+dans les base decisionnelle BI plutot simple
+frequence de sauvegarde du journal de transaction:20 a 30 min
+si JT plein passez en mode simple.
+` alter database [toto] set recovery simple `
+
+### partitionnement
+
+permet de diminuer ou ventiler la plage es données scrutées:
+
+- les recherches
+- les mises a jour (prallélisme)
+
+1 création des espace de stockage
+
+2 creation de la fonction de partitionnement
+
+create PArtition Function PF_Date_facture (Datetime2(0))
+
+```SQL
+AS RANGE Right
+For values ('2018-01-01','2019-01-01','2020-01-01');
+```
+
+3 création du schema de répartition
+
+```SQL
+Create PARTITION SCHEME PS_DATE FACTURE
+as PARTITION PF_DATE_FACTURE
+to (FG_OLD,FG_2018,FG2019,FG2020)
+```
+
+**on ne peut pas avoir une table stocker sous forme de cluster et partitioner pour cela il
+faut supprimer le cluster et recréer un cluster sur la partition**
+
+4 création de l'objet sur la partition
+
+```SQL
+create table  (...)
+ON PS_DATE_FACTURE (coll_critere)
+
+create INDEX  (...)
+ON PS_DATE_FACTURE (coll_critere)
+```
+
+## Type
+
+litteraux: *char,varchar,nchar,nvarchar*
+
+Numérique: *int,smallint,bigint,tinyint,decimal,numeric,float,real*
+
+time: *datetime(obsolete),**datetime2**,time,datetimeoffset*
+
+Binaire: *bit,binary,varbinary,hierarchyID,uniqueindetifier*
+
+Lobs:
+
+- CLOB => varchar(max)
+- NCLOB => NVARCHAR(max)
+- BLOB => VARBINARY(max), XML, GEOGRAPHY, GEOMETRY
+
+## Collonne calculée
+
+## Snapshot
+
+limité édition enterprise
+photographie de la base de données (assimilé a un journal de trasaction inversé).
+a utilisé pour les grosse base avec un serveur qui tien la route car le serveur doit mettre a jour le snapshot a chaque modification de la base.
+
+## import export
+
+### Bulk INSERT
+
+- CHECK_CONSTRAINTS: verifie les contraintes Check et FK
+- FIRE_TRIGGER: execute les déclencheur
+- KEEPIDENTITY: force la valeur dans les auto increments
+- KEEPNULLS: collonnes vides transformées en NULL
+- BATCHSIZE: spécifie la taille du lot de données
+- KILOBYTES_PER_BATCH: Découpe le lot par volume
+- ROWS_PER_BATCH: Découpe le lot par ligne
+
+### SSIS
+
+## Schema SQL
+
+Espace de stockage des objet relationelle
+
+- schema par default de la base: dbo
+
+deux niveaux:
+
+- un schema par default est attribuer a un utilisateur
+- un schema par default de la base
+
+creation
+
+```SQL
+create schema nom_schema
+  Authorization = nom_utilisateur
+```
+
+transfert
+
+```SQL
+Alter SCHEMA nom_schema
+  TRANSFER nom_objet
+```
+
+delete
+
+```SQL
+DROP SCHEMA nom_Schema
+```
+
+## Securité
+
+### compte connexion
+
+create SQL login :
+
+```SQL
+create  LOGIN CNX_SQL_LAMBDA WITH PASSWORD = 'AZERT123'
+```
+
+create WIndows login :
+
+```SQL
+create  LOGIN CNX_SQL_LAMBDA From windows
+  with DEFAULT_DATABASE=toto,DEFAULT_LANGUAGE= us_english
+```
+
+### Utilisateur SQL
+
+Utilisateur SQL autonome
+
+deux cas:
+
+- utilisateur sans compte de connexion
+- utilisateur se conenctant directement a la base
+
+pour le dernier cas la base doit être paramétrée en *contained*
+
+```SQL
+ALTER DATABASE [DB_GRAND_HOTEL] SET CONTAINMENT = PARTIAL WITH NO_WAIT
+```
+
+### privilége
+
+afficher priovilége
+
+```SQL
+
+select * FROM sys.fn_builtin_permissions(null)
+ORDER BY parent_class_desc,covering_permission_name, class_desc
+
+```
+
+```SQL
+
+GRANT <liste de privilèges>
+ON <objet a privilégier>
+to <liste des entité bénéficiaire>
+
+DENY EXECUTE
+ON SCHEMA::[dbo]
+TO [USR_ECRIVAIN]
+```
+
+### roles
+
+permet de presetter des proviléges
+sysadmin,bulkadmin,dbcreator,setupadmin,securityadmin,serveradmin
+
+metadonné:
+sys.server_principals
+sys.server_permissions
+
+role predefinit de database: db_owner,db_datareader,db_datawriter,db_denydatareader,db_denydatawriter,db_securityadmin,db_accessadmin,db_ddladmin,db_backupoperator
+
+public: roles de base que tous les utilisateur on
+
+revoir les fonction de sécurité sur le diapo
+
+## chifrement
+
+revoir les fonction de sécurité sur le diapo
+
+## Tache d'administratrion
+
+### agent SQL
+
+planificateur de tache associé a SQL SERVER.
+
+les donnée de l'agent sont stockés dans la base msdb.
+on y trouve des jog et des alerte
+
+#### Database Mail
+
+permet d'envoyer des mail par le biais du moteur SQL
+
+### Travaux
+
+ensemble d'étape a réaliser
+
+s'execute par default sur le compte de service de l'agent
+sur le compte de Service SQL server pour les Transactions
+
+pour les extention de droit on doit utiliser un "proxy"
+
+### monitoring
+
+#### disque
+
+saturation disque
+taux de remplisage des fichier de bases
+drossisement des fichier SQL des bases
+activité IO de disque
+
+#### transaction
+
+longue transaction
+blocages
+verrou mortels
+
+#### cache
+
+rémanence des pages en cache
+taux de mise en cache
+
+### DBCC
+
+DAtabase console Command
+utilitaire permettant
+
+- obtenir des informations
+- modifier le comportement du moteur
+- effectuer la maintenance bas nivaux
+
+#### integrité des bases
+
+- CHECKALLOC
+- CHECKCATALOG
+- CHECKTABLE
+- CHECKFILEGROUP
+- CHECKDB
+- CHECKCONSTRAINTS
+
+#### réparation base endommagée
+
+lire le diagnostique mais
+
+- ne pas ce précipitez sur la commandes REPAIR
+- Commencez par revoir le support (disque)
+- Déplacer la base si besoin
+- si l'objet endommagé est un index non clustered, supprimez et recréez
+- si c'est une table vous pouvez peut être récupérer les pages endommagées (RESTORE PAGE)
+
+si repair_allow_DATA_LOSS est utilisé:
+
+- vérifier les contraintes (notamment FK) sur les tables réparées (checkconstraint)
+- supprimez les lignes orpheline a l'aide de requéte (semi aniti joiture left)
+- désactiver préalablement les contraints FK
+
+## index
+
+- Primary Key création index cluster par default
+- foreign key: ne neccesite pas tous le temps un index
+  
+structure de donnée redondante pour acccélérer certaine recherche
+relationelle:
+
+- B-tree+
+- hash
+- BW-Tree
+Analyptique
+
+- ColumnStore
+
+PArticuler
+
+- XML
+- GEO
+- full TEXT
+
+les index B-tree peut être utilisé par
+
+- =
+- < > >=>=
+- Between
+- LIKE 'blalal%'
+- Group By
+- Order by
+
+2 type d'index:
+
+- clustered table triée par la cled d'index (un par table comme il represente la table)
+- NONCLUSTERED: index avec copie des données
+  ce dernior neccesite un renvoie pour retrouver la ligne originelle de la table
+
+  - par un row ID (si pas de index clustered)
+  - la valeur de la cles clustered
+
+le row ID contien 3 info:
+
+- numéro de fichier dans la base (file_id)
+- numéro de page dans le fichier
+- numéro de slot de ligne dans la page
+
+les clef d'index clustered devrait:
+
+- être unique
+- Not Null
+- être la plus petite possible
+- ne pas pouvoir être modifié
+
+- toute table doit avoir une clés PRIMAIRE
+- la clef Primaire devrait être un collonne IDENTITY
+
+pour voir la fragmentation des index
+
+```SQL
+ select * from sys.dm_db_index_physical_stats(NULL,NULL,NULL,NULL)
+ where avg_fragmentation_in_percent > 10 and page_count > 64
+```
+
+pour défragmenter
+
+```SQL
+
+  alter index .... reorganize -> pas bloquant mais pas top
+  alter index ..... Rebuild  -> bloquant mais pas top (nom bloquant si verzsion entreprise et mode online)
+
+```
+
+## Sauvegarde
+
+consite a dupliquer les données contenu dans un systeme inforamtique de maniére a pouvoir le restaurer
+
+deux conception:
+
+- sauvegarde pour pallier a l'erreur humaine
+- sauvegarde pour archivage
+
+3 mode de sauvegarde:
+
+- complet:
+  
+  - Enregistre l'intéfrité de la base de données a l'huere de fin de la sauvegarde compléte.
+  - Laisse le journal tel quel.
+  - initialise les sauvegarde diferentielles et du journal de transaction.
+
+- diferentille: enregistre les pages modifiées depuis la derniére sauvegarde compléte et les transactions qui ont eu lieu pendant la sauvegarde
+
+- journal de transactions: enregistre mes transactions qui ont eu lieu depuis la derniére sauvegarde 
+
+
+### mode de récupération
+
+- full (par default) obligatoire en haute dispo
+- bulk logged
+- simple
+  
+### syntaxe de commande 
+
+complete 
+
+BAckup  DATABASE
+
+differentiel
+
+Backup DATABASE WITH DIFFERENTIAL
+
+transactionelle 
+
+BAckup LOG
+
+### Urgence
+
+**COPY_ONLY**: effectue une sauvegarde dans inscription dans le plan de sauvegarde
+
+### multifichier
+
+il est possible d'envoyer la sauvegarde sur plusieur fichier en paralléle chaque ficcier contien une partie de la sauvegarde
+
+il est aussi possible d'envoyer la sauvegarde sur diferent device
+
+### compresioon 
+
+WITH COMPRESSION
+
+gain sur le temps de sauvegarde 
+gain important sur le temps de restauration
+gain importants sur le volume
+
+### lire une sauvegarde
+
+RESTORE LABELONLY: donne des info sur lr média de sauvegarde
+
+RESTORE HEADERONLY: liste les fichier de sauvgarde dans le média
+
+RESTORE FILELISTONLY list les fichier restaurable pour l'in des sauvegarde contenue
+
+RESTORE VERIFYONLY: controle la sauvegarde
+
+
+## surveillance et performance
+
+### Historisation des données
+
+Tables temporelles:
+
+- Table Temporalisée: une table de production dont on rajoute 2 collonnes techniques qui peuvent être "hidden" et qui sont alimentées automatiquement a chaque insert update
+- table d'historisation: table technique contenant l'historique des évolution de chacune des lignes  de la table a laquelle elle est associée.
+
+l'intervalle de temps est ouvert a droite fermée a gauche
+
+interrogation temporelle
+- as-of
+- from
+- between
+- contained in 
+- all
+  
+### verrouillages et blocages
+
+mode de verrouillage pessimiste par default 
+- une écriture bloque la lecture et l'écriture d'autre processus
+- le verrouillafe peut entrainner des: wait,Blocage,deadlock
+
+
+
--- a/IT/SQL/SCRIPTS
+++ b/IT/SQL/SCRIPTS
@ -0,0 +1,25 @@
+-- DISQUES
+
+-- 1 saturation des disques
+-- 2 taux de remplissage des fichiers des bases
+-- 3 grossissement des fichiers SQL des bases
+-- 4 activité IO des disques (latence)
+
+-- TRANSACTIONS
+
+-- 1 longues transactions (oui, mais quelle durée ??? dépend des applications...)
+-- 2 blocages 
+-- 3 verrous mortels
+
+-- CACHE
+
+-- rémanence des pages en cache
+-- taux de mise en cache
+
+
+
+
+
+
+
+
--- a/IT/SQL/SCRIPTS
+++ b/IT/SQL/SCRIPTS
@ -0,0 +1,12 @@
+DECLARE @SQL NVARCHAR(max) = N'';
+SELECT @SQL = @SQL + 'DBCC CHECKDB ([' + name + ']) WITH NO_INFOMSGS;'
+FROM   sys.databases
+WHERE  state = 0
+  AND  source_database_id IS NULL
+  AND  name NOT IN ('tempdb', 'model');
+EXEC (@SQL);
+
+
+
+
+
--- a/IT/SQL/SCRIPTS
+++ b/IT/SQL/SCRIPTS
@ -0,0 +1,42 @@
+CREATE OR ALTER TRIGGER E_DDL_CREATE_TABLE
+ON DATABASE
+FOR CREATE_TABLE
+AS
+BEGIN
+   DECLARE @XML XML = EVENTDATA();
+   -- contrôle du nom
+   IF @XML.value('(/EVENT_INSTANCE/ObjectName)[1]', 'sysname') NOT LIKE 'T?_%' ESCAPE('?')
+      OR @XML.value('(/EVENT_INSTANCE/ObjectName)[1]', 'sysname') NOT LIKE '%_[A-Z][A-Z][A-Z]' ESCAPE('?')
+   BEGIN 
+      ROLLBACK;
+      THROW 66666, 'Le nom d''une table doit être préfixé par "T_" et suffixé par un trigramme, par exemple "_ABC"', 1;
+   END;
+   -- utilisation de types obsolètes
+   IF EXISTS(SELECT *
+             FROM   INFORMATION_SCHEMA.COLUMNS
+             WHERE  TABLE_NAME = @XML.value('(/EVENT_INSTANCE/ObjectName)[1]', 'sysname')
+               AND  TABLE_SCHEMA = @XML.value('(/EVENT_INSTANCE/SchemaName)[1]', 'sysname')
+               AND DATA_TYPE IN ('text', 'ntext', 'image', 'datetime', 'smalldatetime'))
+   BEGIN 
+      ROLLBACK;
+      THROW 66666, 'les colonnes d''une table ne doivent pas comporter de type de données obsolètes ("text", "ntext", "image", "datetime", "smalldatetime").', 1;
+   END;
+END;
+GO
+
+CREATE TRIGGER E_DDL_CREATE_TABLE
+ON ALL SERVER
+FOR CREATE_DATABASE
+AS
+BEGIN
+   DECLARE @XML XML = EVENTDATA();
+   IF @XML.value('(/EVENT_INSTANCE/DatabaseName)[1]', 'sysname') NOT LIKE 'DB?_%' ESCAPE '?'
+   BEGIN 
+      ROLLBACK;
+      THROW 66666, 'Le nom d''une base de données doit être préfixé par "DB_".', 1;
+   END;
+END;
+GO
+
+
+   
--- a/IT/SQL/SCRIPTS
+++ b/IT/SQL/SCRIPTS
@ -0,0 +1,48 @@
+SELECT mf.*, volume_mount_point, 1.0 * total_bytes / POWER(1024, 3) AS DISK_SIZE_GB,
+       1.0 * available_bytes / POWER(1024, 3) AS FREE_SIZE_GB,
+       100 * (1 - 1.0 * available_bytes/total_bytes) PERCENT_USED
+FROM   sys.master_files AS mf
+       CROSS APPLY sys.dm_os_volume_stats(database_id, file_id);
+
+WITH 
+disk_activity AS
+(SELECT LEFT(mf.physical_name, 2) AS Drive, 
+        SUM(num_of_reads) AS num_of_reads,
+	     SUM(io_stall_read_ms) AS io_stall_read_ms, 
+        SUM(num_of_writes) AS num_of_writes,
+	     SUM(io_stall_write_ms) AS io_stall_write_ms, 
+        SUM(num_of_bytes_read) AS num_of_bytes_read,
+	     SUM(num_of_bytes_written) AS num_of_bytes_written, SUM(io_stall) AS io_stall
+ FROM   sys.dm_io_virtual_file_stats(NULL, NULL) AS vfs
+        INNER JOIN sys.master_files AS mf WITH (NOLOCK)
+              ON vfs.database_id = mf.database_id AND vfs.file_id = mf.file_id
+ GROUP  BY LEFT(mf.physical_name, 2))
+SELECT (SELECT sqlserver_start_time FROM sys.dm_os_sys_info) AS SINCE,
+       Drive AS DISK_DRIVE,
+       CASE 
+		    WHEN num_of_reads = 0 THEN 0 
+		    ELSE (io_stall_read_ms/num_of_reads) 
+	    END AS READ_LATENCY,
+	    CASE 
+		    WHEN io_stall_write_ms = 0 THEN 0 
+          ELSE (io_stall_write_ms/num_of_writes) 
+	    END AS WRITE_LATENCY,
+       CASE 
+          WHEN (num_of_reads = 0 AND num_of_writes = 0) THEN 0 
+          ELSE (io_stall/(num_of_reads + num_of_writes)) 
+       END AS GLOBAL_LATENCY,
+       CASE 
+          WHEN num_of_reads = 0 THEN 0 
+          ELSE (num_of_bytes_read/num_of_reads) 
+       END AS AVG_BYTES_PER_READ,
+       CASE 
+          WHEN io_stall_write_ms = 0 THEN 0 
+          ELSE (num_of_bytes_written/num_of_writes) 
+       END AS AVG_BYTES_PER_WRITE,
+       CASE 
+          WHEN (num_of_reads = 0 AND num_of_writes = 0) THEN 0 
+          ELSE ((num_of_bytes_read + num_of_bytes_written)/(num_of_reads + num_of_writes)) 
+       END AS AVG_BYTES_PER_TRANSFER
+FROM   disk_activity AS tab
+ORDER  BY GLOBAL_LATENCY 
+OPTION (RECOMPILE);
--- a/IT/SQL/SCRIPTS
+++ b/IT/SQL/SCRIPTS
@ -0,0 +1,47 @@
+USE master;
+GO
+
+CREATE PROCEDURE dbo.sp__DB_SNAP @DB NVARCHAR(128), @PATH NVARCHAR(256)
+AS
+
+IF NOT EXISTS(SELECT *
+              FROM   master.sys.databases
+              WHERE  name = @DB
+                AND  source_database_id IS NULL
+                AND  state_desc = 'ONLINE')
+BEGIN
+   RAISERROR('Le nom de base %s n''existe pas sur ce serveur ou n''est pas en état copiable.', 16, 1, @DB);
+   RETURN;
+END;
+
+IF RIGHT(@PATH, 1) = '\'
+   SET @PATH = @PATH + '\';
+
+DECLARE @T TABLE (file_exists bit, file_is_dir bit, parent_dir_exists bit);
+INSERT INTO @T
+EXEC master.sys.xp_fileexist @PATH;
+IF NOT EXISTS(SELECT 0
+              FROM   @T
+              WHERE  file_is_dir = 1)
+BEGIN
+   RAISERROR('Le chemin passé en arguement, n''est pas un répertoire valide.' , 16, 1);
+   RETURN
+END
+
+DECLARE @SQL VARCHAR(MAX);
+SET @SQL = 'CREATE DATABASE [' + @DB +'_SNAP_'  
+           + REPLACE(REPLACE(REPLACE(REPLACE(CONVERT(NVARCHAR(23), CURRENT_TIMESTAMP, 121), '-', ''), ' ', '_'), ':', ''), '.', '_')
+           + '] ON '
+SELECT @SQL = @SQL + '( NAME = ' + name +', FILENAME = '''  
+            + @PATH + REVERSE(SUBSTRING(REVERSE(physical_name), 1, CHARINDEX('\', REVERSE(physical_name)) - 1))
+            + '''),'
+from   sys.master_files
+WHERE  type = 0
+  AND  database_id = DB_ID(@DB)
+SET @SQL = SUBSTRING(@SQL, 1, LEN(@SQL) - 1) + ' AS SNAPSHOT OF ['
+           + @DB + ']'
+EXEC (@SQL)
+
+GO
+
+EXEC sp_MS_marksystemobject 'sp__DB_SNA'
--- a/IT/SQL/SCRIPTS
+++ b/IT/SQL/SCRIPTS
@ -0,0 +1,13 @@
+CREATE TRIGGER E_LOGON_LIMIT_SA
+ON ALL SERVER 
+FOR LOGON
+AS
+BEGIN
+IF EXISTS(SELECT 1
+          FROM   sys.dm_exec_sessions
+          WHERE  is_user_process = 1 
+            AND   ORIGINAL_LOGIN()= 'sa'
+            AND    original_login_name = 'sa'
+          HAVING COUNT(*) > 1)
+    ROLLBACK;
+END;
--- a/IT/SQL/SCRIPTS
+++ b/IT/SQL/SCRIPTS
@ -0,0 +1,42 @@
+SELECT * 
+FROM   sys.dm_exec_connections
+       OUTER APPLY sys.dm_exec_sql_text(most_recent_sql_handle);
+
+SELECT * 
+FROM   sys.dm_exec_sessions AS s
+       LEFT OUTER JOIN sys.dm_exec_connections AS c
+          ON s.session_id = c.session_id
+       CROSS APPLY sys.dm_exec_sql_text(most_recent_sql_handle);
+       
+
+SELECT * 
+FROM   sys.dm_exec_sessions AS s
+       LEFT OUTER JOIN sys.dm_exec_connections AS c
+          ON s.session_id = c.session_id
+       LEFT OUTER JOIN sys.dm_exec_requests AS r
+          ON s.session_id = r.session_id
+       OUTER APPLY sys.dm_exec_sql_text(sql_handle)
+       OUTER APPLY sys.dm_exec_query_plan(plan_handle);
+
+--> bloqueurs et bloqués
+SELECT * 
+FROM   sys.dm_exec_sessions AS s
+       LEFT OUTER JOIN sys.dm_exec_connections AS c
+          ON s.session_id = c.session_id
+       LEFT OUTER JOIN sys.dm_exec_requests AS r
+          ON s.session_id = r.session_id
+       OUTER APPLY sys.dm_exec_sql_text(sql_handle)
+       OUTER APPLY sys.dm_exec_query_plan(plan_handle)
+WHERE  s.session_id  IN (SELECT blocking_session_id
+                      FROM   sys.dm_exec_requests AS r 
+                      WHERE  blocking_session_id > 0)
+UNION ALL
+SELECT * 
+FROM   sys.dm_exec_sessions AS s
+       LEFT OUTER JOIN sys.dm_exec_connections AS c
+          ON s.session_id = c.session_id
+       LEFT OUTER JOIN sys.dm_exec_requests AS r
+          ON s.session_id = r.session_id
+       OUTER APPLY sys.dm_exec_sql_text(sql_handle)
+       OUTER APPLY sys.dm_exec_query_plan(plan_handle)
+WHERE  blocking_session_id <> 0;
--- a/IT/SQL/SCRIPTS
+++ b/IT/SQL/SCRIPTS
@ -0,0 +1,23 @@
+-- diagnotsic des index a créer 
+
+--!!!!!!!!!!!!!!!!!!!!!!!!! ATTENTION : ne pas utiliser si moins de 30 jours de fonctionnement CONTINU du SGBDR
+
+SELECT sqlserver_start_time FROM sys.dm_os_sys_info
+
+-- 2 moyens
+-- 1) grossier : je prend le top n des index qui me font ganger le MAX
+SELECT TOP (SELECT COUNT(*) / 3 FROM [dbo].[sys_dm_db_missing_index_details])
+       statement, equality_columns, inequality_columns, included_columns
+FROM   [dbo].[sys_dm_db_missing_index_details] AS mid
+       JOIN [dbo].[sys_dm_db_missing_index_groups] AS mig ON mid.index_handle = mig.index_handle
+       JOIN [dbo].[sys_dm_db_missing_index_group_stats] AS mis ON mig.index_group_handle = mis.group_handle
+ORDER  BY statement, equality_columns, inequality_columns, included_columns
+
+-- 2) analyse des pertinence des index à créer...
+SELECT statement, equality_columns, inequality_columns, included_columns
+FROM   [dbo].[sys_dm_db_missing_index_details] AS mid
+ORDER  BY statement, COALESCE(equality_columns+ ', ' + inequality_columns, equality_columns, inequality_columns)
+
+CREATE INDEX XYZ ON [Anthadine_prod].[dbo].[C_C_CSTPAT] ([CSTTYP_CODE], [INDI_CODE]	[CSTPAT_DATE], [CSTPAT_ESTREF])
+INCLUDE ([CSTPAT_CODE], [UTIL_INDI_CODE], [CSTPAT_HEURE], [IDENT], [CSTPAT_TEXTE], [CSTPAT_VALE], [CSTPAT_ESTREF], [TRACE_INS_INDI_CODE], [TRACE_UPD_INDI_CODE], [TRACE_INS_DATE], [TRACE_UPD_DATE], [TRACE_FLAG_DELETE], [EFEV_CODE])
+
--- a/IT/SQL/SCRIPTS
+++ b/IT/SQL/SCRIPTS
@ -0,0 +1,78 @@
+
+WITH  
+-- sous requête CTE donnant les index avec leurs colonnes  
+T0 AS (SELECT ic.object_id, index_id, c.column_id, key_ordinal,  
+              CASE is_descending_key  
+                 WHEN '0' THEN 'ASC'  
+                 WHEN '1' THEN 'DESC'            
+              END AS sens, c.name AS column_name,  
+              ROW_NUMBER() OVER(PARTITION BY ic.object_id, index_id ORDER BY key_ordinal DESC) AS N,
+              is_included_column    
+       FROM   sys.index_columns AS ic  
+              INNER JOIN sys.columns AS c  
+                    ON ic.object_id = c.object_id  
+                       AND ic.column_id = c.column_id  
+       WHERE  key_ordinal > 0  
+         AND  index_id > 0),  
+-- sous requête CTE récursive composant les clefs des index sous forme algébrique et littérale  
+T1 AS (SELECT object_id, index_id, column_id, key_ordinal, N,  
+              CASE WHEN is_included_column = 0 THEN CAST(column_name AS VARCHAR(MAX)) + ' ' + sens ELSE '' END AS COMP_LITTERALE,  
+              CASE WHEN is_included_column = 0 THEN CAST(column_id AS VARCHAR(MAX)) + SUBSTRING(sens, 1, 1) ELSE '' END AS COMP_MATH,  
+              MAX(N) OVER(PARTITION BY object_id, index_id) AS CMAX,
+              CASE WHEN is_included_column = 1 THEN CAST(column_name AS VARCHAR(MAX)) ELSE '' END AS COLONNES_INCLUSES
+       FROM   T0  
+       WHERE  key_ordinal = 1  
+       UNION  ALL        
+       SELECT T0.object_id, T0.index_id, T0.column_id, T0.key_ordinal, T0.N,  
+              COMP_LITTERALE  +  
+              CASE WHEN is_included_column = 0 THEN  ', ' + CAST(T0.column_name AS VARCHAR(MAX)) + ' ' + T0.sens ELSE '' END,  
+              COMP_MATH +  
+              CASE WHEN is_included_column = 0 THEN CAST(T0.column_id AS VARCHAR(MAX)) + SUBSTRING(T0.sens, 1, 1) ELSE '' END,  
+              T1.CMAX, COLONNES_INCLUSES + CASE WHEN is_included_column = 1 THEN ', ' + CAST(column_name AS VARCHAR(MAX)) ELSE '' END
+       FROM   T0  
+              INNER JOIN T1  
+                    ON T0.object_id = T1.object_id  
+                       AND T0.index_id = T1.index_id  
+                       AND T0.key_ordinal = T1.key_ordinal + 1),  
+-- sous requête CTE de dédoublonnage                        
+T2 AS (SELECT object_id, index_id, COMP_LITTERALE, COMP_MATH, CMAX, COLONNES_INCLUSES  
+       FROM   T1  
+       WHERE  N = 1),  
+-- sous requête sélectionnant les anomalies        
+T4 AS (SELECT T2.object_id, T2.index_id,  
+              T3.index_id AS index_id_anomalie,  
+              T2.COMP_LITTERALE AS CLEF_INDEX,  
+              T3.COMP_LITTERALE AS CLEF_INDEX_ANORMAL,
+              T2.COLONNES_INCLUSES, T3.COLONNES_INCLUSES AS COLONNES_INCLUSES_ANORMAL,  
+              CASE  
+                 WHEN T2.COMP_MATH = T3.COMP_MATH  
+                   THEN 'DOUBLONS'  
+                 WHEN T2.COMP_MATH LIKE T3.COMP_MATH +'%'  
+                   THEN 'INCLUS'  
+              END AS ANOMALIE,  
+              ABS(T2.CMAX - T3.CMAX) AS DISTANCE  
+       FROM   T2  
+              INNER JOIN T2 AS T3  
+             ON T2.object_id = T3.object_id  
+                AND T2.index_id <> T3.index_id  
+                AND T2.COMP_MATH LIKE T3.COMP_MATH +'%')  
+-- Requête finale rajoutant les informations manquantes        
+SELECT T4.*,  
+       s.name +'.' + o.name AS NOM_TABLE,  
+       i1.name AS NOM_INDEX,  
+       i2.name AS NOM_INDEX_ANORMAL
+       --, i1.filter_definition AS FILTRE_INDEX
+       --, i2.filter_definition AS FILTRE_INDEX_ANORMAL
+FROM   T4  
+       INNER JOIN sys.objects AS o  
+             ON T4.object_id = o.object_id  
+             INNER JOIN sys.schemas AS s  
+                   ON o.schema_id = s.schema_id  
+       INNER JOIN sys.indexes AS i1  
+             ON T4.object_id = i1.object_id  
+                AND T4.index_id = i1.index_id  
+       INNER JOIN sys.indexes AS i2  
+             ON T4.object_id = i2.object_id  
+                AND T4.index_id_anomalie = i2.index_id  
+WHERE  o."type" IN ('U', 'V')  
+ORDER  BY NOM_TABLE, NOM_INDEX;
--- a/IT/SQL/SCRIPTS
+++ b/IT/SQL/SCRIPTS
@ -0,0 +1,27 @@
+-- diagnostic des index fragmentés
+SELECT * FROM sys.dm_db_index_physical_stats(NULL, NULL, NULL, NULL, NULL)
+WHERE avg_fragmentation_in_percent > 10
+  AND page_count>64
+
+-- ALTER INDEX .... REORGANIZE --> pas bloquant mais pas top
+-- ALTER INDEX .... REBUILD --> bloquant mais top (peut être non bloquant si ed. Enterprise et mode ONLINE)
+
+-- diagnostic des index inutilisés 
+-- !!!!!!!!!!!!!!!!!!!!!!!!! ATTENTION : ne pas utiliser si moins de 30 jours de fonctionnement CONTINU du SGBDR
+SELECT sqlserver_start_time FROM sys.dm_os_sys_info
+
+SELECT *
+FROM   sys.dm_db_index_usage_stats
+WHERE  index_id > 1
+ORDER  BY user_seeks, user_lookups, user_scans, user_updates DESC
+
+-- recalcul des statistiques
+SELECT *
+FROM   sys.stats AS s
+       CROSS APPLY sys.dm_db_stats_properties(s.object_id, s.stats_id)
+WHERE  modification_counter > rows / 10
+
+UPDATE STATISTICS .... WITH FULLSCAN
+
+
+
--- a/TABLRESULTS.sql
+++ b/TABLRESULTS.sql
@ -0,0 +1,10 @@
+DECLARE @LOGSPACE TABLE 
+(DATABASE_NAME    sysname,
+ LOG_SIZE_MB      FLOAT,
+ LOG_USE_PERCENT  FLOAT,
+ STATUS           INT);
+ 
+INSERT INTO @LOGSPACE
+EXEC ('DBCC SQLPERF(LOGSPACE);');
+
+SELECT * FROM @LOGSPACE WHERE LOG_USE_PERCENT > 30;
--- a/IT/SQL/SCRIPTS
+++ b/IT/SQL/SCRIPTS
@ -0,0 +1,32 @@
+USE [DB_GRAND_HOTEL];
+GO
+
+-- rajouter une partition : 
+-- 1) créer le stockage
+ALTER DATABASE [DB_GRAND_HOTEL]
+   ADD FILEGROUP FG_PART_2009;
+ALTER DATABASE [DB_GRAND_HOTEL]
+   ADD FILE (NAME = 'F_PART_2009', 
+             FILENAME = 'H:\DATABASE_SQL\SQL2019FBIN2\DATA\HOTEL_PART_2009.ndf', 
+             SIZE = 25,
+             FILEGROWTH = 10)
+   TO FILEGROUP FG_PART_2009;
+
+-- 2) modifier le schema de paritionnement
+ALTER PARTITION SCHEME PS_DATE_FACTURE 
+   NEXT USED FG_PART_2009;  
+GO
+
+-- 3) ajouter le "piquet" de partitionnement
+ALTER PARTITION FUNCTION PF_DATE_FACTURE()
+   SPLIT RANGE ('2009-01-01');
+
+-- autres possibilités
+-- XXX) réaranger les partitions => ALTER PARTITION FUNCTION ... MERGE
+
+-- XXX) supprimer les données de certainers partitions => TRUNCATE PARTITION
+
+
+
+
+
--- a/IT/SQL/SCRIPTS
+++ b/IT/SQL/SCRIPTS
@ -0,0 +1,32 @@
+-- top 10 des requêtes les plus pourries
+SELECT TOP 10 
+       SUBSTRING(text, 
+                 (statement_start_offset/2) + 1,  
+                 ((CASE statement_end_offset   
+                      WHEN -1 THEN DATALENGTH(text)  
+                      ELSE statement_end_offset 
+                   END - statement_start_offset)/2) + 1) 
+          AS QUERY,
+       * 
+FROM   sys.dm_exec_query_stats
+       CROSS APPLY sys.dm_exec_sql_text(sql_handle)
+       CROSS APPLY sys.dm_exec_query_plan(plan_handle);
+GO
+
+-- top 10 des procédures les plus pourries
+SELECT *
+FROM   sys.dm_exec_procedure_stats
+       CROSS APPLY sys.dm_exec_sql_text(sql_handle)
+       CROSS APPLY sys.dm_exec_query_plan(plan_handle);
+
+-- top 10 des déclencheurs les plus pourries
+SELECT *
+FROM   sys.dm_exec_trigger_stats
+       CROSS APPLY sys.dm_exec_sql_text(sql_handle)
+       CROSS APPLY sys.dm_exec_query_plan(plan_handle);
+
+-- top 10 des UDF les plus pourries
+SELECT *
+FROM   sys.dm_exec_function_stats
+       CROSS APPLY sys.dm_exec_sql_text(sql_handle)
+       CROSS APPLY sys.dm_exec_query_plan(plan_handle);
--- a/IT/SQL/SCRIPTS
+++ b/IT/SQL/SCRIPTS
@ -0,0 +1,262 @@
+/******************************************************************************
+* PREPARATION
+******************************************************************************/
+USE master;
+GO
+
+IF EXISTS(SELECT * FROM sys.configurations WHERE name = 'xp_cmdshell' AND value_in_use = 0)
+BEGIN
+   IF EXISTS(SELECT * FROM sys.configurations WHERE name = 'show advanced options' AND value_in_use = 0)
+   BEGIN
+      EXEC ('EXEC sp_configure ''show advanced options'', 1');
+      EXEC ('RECONFIGURE');
+   END
+   EXEC ('EXEC sp_configure ''xp_cmdshell'', 1');
+   EXEC ('RECONFIGURE');
+END;
+GO   
+
+EXEC xp_cmdshell 'MKDIR "C:\!\SQL Server Database AUDIT\"';
+EXEC xp_cmdshell 'MKDIR "C:\!\SQL Server BACKUP\"';
+
+
+IF EXISTS(SELECT * FROM sys.databases WHERE name = 'DB_TEST_AUDIT')
+BEGIN
+   EXEC ('USE DB_TEST_AUDIT;ALTER DATABASE DB_TEST_AUDIT SET SINGLE_USER WITH ROLLBACK IMMEDIATE;')
+   EXEC ('USE master;DROP DATABASE DB_TEST_AUDIT');
+END   
+GO   
+
+IF EXISTS(SELECT * FROM sys.server_principals WHERE name = 'CNX_LECTEUR')
+   EXEC ('DROP LOGIN CNX_LECTEUR');
+GO
+
+IF EXISTS(SELECT * FROM sys.server_principals WHERE name = 'CNX_ECRIVAIN')
+   EXEC ('DROP LOGIN CNX_ECRIVAIN');
+GO
+
+IF EXISTS(SELECT * FROM sys.server_audits  WHERE name = 'SVA_FRED')
+BEGIN
+   EXEC ('USE master;ALTER SERVER AUDIT SVA_FRED WITH (STATE = OFF);')
+   EXEC ('USE master;DROP SERVER AUDIT SVA_FRED');
+END   
+GO
+
+IF EXISTS(SELECT * FROM sys.server_audit_specifications  WHERE name = 'SAS_BACKUP_RESTORE_SRV')
+BEGIN
+   EXEC ('USE master;ALTER SERVER AUDIT SPECIFICATION SAS_BACKUP_RESTORE_SRV WITH (STATE = OFF);')
+   EXEC ('USE master;DROP SERVER AUDIT SPECIFICATION SAS_BACKUP_RESTORE_SRV');
+END   
+GO
+
+IF EXISTS(SELECT * FROM sys.server_triggers WHERE name = 'E_LOGON')
+   EXEC ('DROP TRIGGER E_LOGON ON ALL SERVER');
+GO
+
+EXEC xp_cmdshell 'DEL /Q "C:\!\SQL Server BACKUP\*.*"';
+EXEC xp_cmdshell 'DEL /Q "C:\!\SQL Server Database AUDIT\*.*"';
+GO
+
+/******************************************************************************
+* CRÉATION DE LA BASE DE TEST ET MISE EN PLACE D'OBJETS
+******************************************************************************/
+
+USE master;
+GO
+
+CREATE DATABASE DB_TEST_AUDIT;
+GO
+
+CREATE LOGIN CNX_LECTEUR 
+   WITH PASSWORD = 'Maux 2 p@stAga',
+        DEFAULT_DATABASE = DB_TEST_AUDIT,
+        DEFAULT_LANGUAGE = French;
+GO
+        
+CREATE LOGIN CNX_ECRIVAIN 
+   WITH PASSWORD = 'Maux 2 p@stAga',
+        DEFAULT_DATABASE = DB_TEST_AUDIT,
+        DEFAULT_LANGUAGE = French;        
+GO
+
+USE DB_TEST_AUDIT;
+GO
+
+CREATE USER USR_LECTEUR FROM LOGIN CNX_LECTEUR;
+GO
+
+CREATE USER USR_ECRIVAIN FROM LOGIN CNX_ECRIVAIN;
+GO
+
+CREATE SCHEMA S_BOUQUIN
+GO
+
+CREATE TABLE S_BOUQUIN.T_LIVRE_LVR
+(LVR_ID     INT IDENTITY PRIMARY KEY,
+ LVR_TITRE  VARCHAR(256))
+GO
+
+CREATE TABLE dbo.acces
+(id      INT IDENTITY PRIMARY KEY,
+ nom     sysname DEFAULT USER,
+ moment  DATETIME2(3) DEFAULT GETDATE())
+GO
+
+GRANT SELECT ON DATABASE::DB_TEST_AUDIT TO USR_LECTEUR;
+GO
+
+GRANT INSERT ON dbo.acces TO USR_LECTEUR;
+GO
+
+GRANT SELECT, INSERT, UPDATE, DELETE ON SCHEMA::S_BOUQUIN TO USR_ECRIVAIN;
+GO
+
+GRANT INSERT ON dbo.acces TO USR_ECRIVAIN;
+GO
+
+CREATE TRIGGER E_LOGON
+ON ALL SERVER
+FOR LOGON
+AS
+   IF EXISTS(SELECT * 
+             FROM   sys.server_principals 
+             WHERE  name = USER 
+               AND  default_database_name = 'DB_TEST_AUDIT')
+   INSERT INTO DB_TEST_AUDIT.dbo.acces 
+   DEFAULT VALUES;
+GO  
+
+/******************************************************************************
+* PARTIE AUDIT : mise en place du suivi
+******************************************************************************/
+
+USE master;
+GO
+
+-- création de l'espace de travail pour les audits
+CREATE SERVER AUDIT SVA_FRED
+TO FILE ( FILEPATH = 'C:\!\SQL Server Database AUDIT\'
+        , MAXSIZE = 1 GB 
+        , MAX_ROLLOVER_FILES = 256 
+        , RESERVE_DISK_SPACE = OFF )
+WITH ( QUEUE_DELAY = 3000
+     , ON_FAILURE = SHUTDOWN );
+GO
+
+-- suivie d'une action de groupe au niveau serveur :
+CREATE SERVER AUDIT SPECIFICATION SAS_BACKUP_RESTORE_SRV
+FOR SERVER AUDIT SVA_FRED
+ADD (BACKUP_RESTORE_GROUP);
+GO
+-- concernant les sauvegardes et restaurations de toutes bases
+
+USE DB_TEST_AUDIT;
+GO
+
+-- suivie d'une action de groupe au niveau base
+CREATE DATABASE AUDIT SPECIFICATION SAS_SUIVI_BASE
+FOR SERVER AUDIT SVA_FRED
+ADD (DATABASE_OBJECT_CHANGE_GROUP)
+GO
+-- concernant les modification de structure des objets de la base 
+
+-- suivi d'une action particulière au niveau objet, pour toute la base
+ALTER DATABASE AUDIT SPECIFICATION SAS_SUIVI_BASE
+ADD ( SELECT     
+      ON DATABASE::DB_TEST_AUDIT       
+      BY dbo);
+-- concerne le SELECT sur tous les objets de la base DB_TEST_AUDIT  
+   
+-- suivie de plusieurs action spécifique au niveau objet, pour tout un schema SQL
+ALTER DATABASE AUDIT SPECIFICATION SAS_SUIVI_BASE
+ADD  ( INSERT, UPDATE, DELETE  
+      ON SCHEMA::S_BOUQUIN 
+      BY USR_ECRIVAIN);
+-- concerne les mises à jour (INSERT, UPDATE, DELETE) sur tous les objets ddu schéma SQL S_BOUQUIN        
+      
+-- suivi de l'action INSERT sur la table dbo.acces.
+ALTER DATABASE AUDIT SPECIFICATION SAS_SUIVI_BASE
+ADD ( INSERT  
+      ON dbo.acces 
+      BY USR_ECRIVAIN, USR_LECTEUR);      
+GO
+
+-- démarrage de l'audit au niveau serveur
+USE master;
+GO
+
+-- pour l'espace de stockage
+ALTER SERVER AUDIT SVA_FRED
+WITH (STATE = ON);
+GO   
+
+-- pour le suivi niveau serveur
+ALTER SERVER AUDIT SPECIFICATION SAS_BACKUP_RESTORE_SRV
+WITH (STATE = ON);
+GO   
+
+-- démarrage de l'audit au niveau base
+USE DB_TEST_AUDIT;
+GO
+
+ALTER DATABASE AUDIT SPECIFICATION SAS_SUIVI_BASE
+WITH (STATE = ON);
+GO   
+
+
+   
+/******************************************************************************
+* TEST divers de manipulation des données
+******************************************************************************/
+
+ALTER TABLE S_BOUQUIN.T_LIVRE_LVR
+  ADD LVR_DH_INSERT DATETIME2(6) DEFAULT GETDATE();
+ 
+--> se connecter sous le compte CNX_ECRIVAIN/Maux 2 p@stAga
+
+INSERT INTO S_BOUQUIN.T_LIVRE_LVR (LVR_TITRE)
+VALUES ('Guère épais'),
+       ('Benne à or dur'),
+       ('L''étroite Moustiquaire');
+GO 100
+
+UPDATE TOP (50) S_BOUQUIN.T_LIVRE_LVR 
+SET    LVR_TITRE = 'Guerre et Paix'
+WHERE  LVR_TITRE = 'Guère épais';
+GO 
+ 
+UPDATE TOP (10) S_BOUQUIN.T_LIVRE_LVR 
+SET    LVR_TITRE = 'Les trois mousquetaires'
+WHERE  LVR_TITRE = 'L''étroite Moustiquaire';
+GO
+
+DELETE FROM S_BOUQUIN.T_LIVRE_LVR 
+WHERE  LVR_TITRE = 'Benne à or dur';
+GO
+
+SELECT * 
+FROM   S_BOUQUIN.T_LIVRE_LVR ;
+GO
+
+--> se connecter sous le compte CNX_LECTEUR/Maux 2 p@stAga
+
+SELECT LVR_ID, LVR_TITRE 
+FROM   S_BOUQUIN.T_LIVRE_LVR 
+WHERE  LVR_TITRE LIKE '% et %' ;
+GO
+
+-- > revenir en tant que sysadmin
+
+BACKUP DATABASE DB_TEST_AUDIT
+TO DISK = 'C:\!\SQL Server BACKUP\DB_TEST_AUDIT.full.bak';
+
+ 
+/******************************************************************************
+* PARTIE AUDIT : lecture des données auditées
+******************************************************************************/
+     
+SELECT * 
+FROM   sys.fn_get_audit_file ( 'C:\!\SQL Server Database AUDIT\*', default, default )
+
+
+
--- a/IT/SQL/SCRIPTS
+++ b/IT/SQL/SCRIPTS
--- a/IT/SQL/SCRIPTS
+++ b/IT/SQL/SCRIPTS
@ -0,0 +1,11 @@
+-- Exercice sur le stokage de la base "hotel"
+
+-- réorganisez le stockage de la base DB_GRAND_HOTEL comme suit :
+1) création d'un groupe de fichier FG_DATA pour les données avec 2 fichiers de 100 Mo
+   incrément de croissance de 64 Mo. Aucune de limite de taille
+2) faite de ce groupe de fichiers le groupe de fichier par défaut
+3) déplacer les tables et index dans ce groupe de fichier à l'aide de la requête donnée
+4) redimensionnez le journal de transactions à 100 Mo et le fichier master data à 10 Mo
+5) précisez que la taille d'incrément du JT est de 64 Mo et pour le fichier mdf de 10 Mo
+
+
--- a/sécurité.sql
+++ b/sécurité.sql
@ -0,0 +1,65 @@
+-- créer trois comptes de connexion :
+-- CNX_LECTEUR
+-- CNX_ECRIVAIN
+-- CNX_ADMIN
+-- langage français, base par défaut DB_GRAND_HOTEL
+-- mot de passe => 'SQL2019x'
+USE master;
+GO
+
+CREATE LOGIN CNX_LECTEUR
+   WITH PASSWORD = 'SQL2019x',
+        DEFAULT_LANGUAGE = Français,
+        DEFAULT_DATABASE = DB_GRAND_HOTEL;
+
+CREATE LOGIN CNX_ECRIVAIN
+   WITH PASSWORD = 'SQL2019x',
+        DEFAULT_LANGUAGE = Français,
+        DEFAULT_DATABASE = DB_GRAND_HOTEL;
+
+CREATE LOGIN CNX_ADMIN
+   WITH PASSWORD = 'SQL2019x',
+        DEFAULT_LANGUAGE = Français,
+        DEFAULT_DATABASE = DB_GRAND_HOTEL;
+GO
+
+--> TESTEZ si vous arrivez à vous connecter !
+
+USE [DB_GRAND_HOTEL]
+GO
+
+-- créer 3 utilisateurs SQL relatif à ces comptes de connexion
+-- USR_LECTEUR
+-- USR_ECRIVAIN
+-- USR_ADMIN
+
+CREATE USER USR_LECTEUR
+   FOR LOGIN CNX_LECTEUR;
+
+CREATE USER USR_ECRIVAIN
+   FOR LOGIN CNX_ECRIVAIN;
+
+CREATE USER USR_ADMIN
+   FOR LOGIN CNX_ADMIN;
+
+-- USR_REPORT qui se connecte directement avec le mot passe 'SQL2019report', langage français
+IF EXISTS(SELECT * 
+          FROM   sys.configurations 
+          WHERE  name = 'contained database authentication'
+            AND  value_in_use = 0) 
+BEGIN
+   EXEC ('EXEC sp_configure ''contained database authentication'', 1;')
+   EXEC ('RECONFIGUE;')
+END;
+GO
+
+USE [master]
+GO
+ALTER DATABASE [DB_GRAND_HOTEL] SET CONTAINMENT = PARTIAL WITH NO_WAIT
+GO
+
+USE [DB_GRAND_HOTEL]
+GO
+CREATE USER USR_REPORT
+   WITH PASSWORD = 'SQL2019report';
+GO
--- a/IT/SQL/SCRIPTS
+++ b/IT/SQL/SCRIPTS
@ -0,0 +1,14 @@
+1) sauvegardez la base DB_GRAND_HOTEL
+--> BACKUP DATABASE DB_GRAND_HOTEL 
+    TO DISK = 'C:\SQL\BACKUP\DB_GRAND_HOTEL.BAK'
+    WITH COMPRESSION;
+
+2) mettez en place TDE
+
+3) faite une nouvelle sauvegarde
+--> BACKUP DATABASE DB_GRAND_HOTEL 
+    TO DISK = 'C:\SQL\BACKUP\DB_GRAND_HOTEL_TDE.BAK'
+    WITH COMPRESSION;
+
+--> allez comparer le contenu de ces deux fichiers à l'aide d'un éditeur texte
+
--- a/plainfiées.sql
+++ b/plainfiées.sql
@ -0,0 +1,34 @@
+-- sauvegardez en mode complet les bases : master, msdb, DB_GRAND_HOTEL
+BACKUP DATABASE master 
+   TO DISK = 'master.bak' 
+   WITH COMPRESSION, RETAINDAYS = 3;
+BACKUP DATABASE msdb 
+   TO DISK = 'msdb.bak' 
+   WITH COMPRESSION, RETAINDAYS = 3;
+BACKUP DATABASE DB_GRAND_HOTEL 
+   TO DISK = 'DB_GRAND_HOTEL.bak' 
+   WITH COMPRESSION, RETAINDAYS = 3;
+-- planifié à 22h tous les jours
+
+-- sauvegarder le journal de transaction de la base DB_GRAND_HOTEL
+BACKUP LOG DB_GRAND_HOTEL 
+   TO DISK = 'DB_GRAND_HOTEL.trn' 
+   WITH RETAINDAYS = 3;
+-- planifié toutes les 20 minutes
+
+RAISERROR('Mon erreur', 16, 1) WITH LOG;
+
+EXECUTE AS USER = 'USR_ECRIVAIN'
+
+RAISERROR('Mon erreur', 16, 1) WITH LOG;
+
+-- IDERA, QUEST, APEX, REDGATE, SOLAR WINDS, SENTRY SQL
+-- KUKANRU gratuit et léger
+
+
+
+
+
+
+
+
--- a/indexation.sql
+++ b/indexation.sql
@ -0,0 +1,130 @@
+/***************************
+****************************
+* LES REQUÊTES A OPTIMISER *
+****************************
+***************************/
+/*
+SET STATISTICS IO OFF
+SET STATISTICS TIME ON
+--> 32867 IO
+DROP INDEX X ON T_EMPLOYEE_EMP;
+CREATE INDEX X ON T_EMPLOYEE_EMP (EMP_SEXE); --> 32867
+CREATE INDEX X ON T_EMPLOYEE_EMP (EMP_SERVICE); --> 32867
+CREATE INDEX X ON T_EMPLOYEE_EMP (EMP_SEXE) INCLUDE (EMP_SERVICE); --> 4535
+CREATE INDEX X ON T_EMPLOYEE_EMP (EMP_SEXE, EMP_SERVICE); --> 82
+CREATE INDEX X ON T_EMPLOYEE_EMP (EMP_SERVICE, EMP_SEXE); --> 77
+CREATE INDEX X ON T_EMPLOYEE_EMP (EMP_SERVICE) INCLUDE (EMP_SEXE); --> 77
+CREATE INDEX X ON T_EMPLOYEE_EMP (EMP_SEXE) WHERE EMP_SERVICE = 'RH';--> 54
+CREATE INDEX X ON T_EMPLOYEE_EMP (EMP_SEXE) WHERE EMP_SERVICE = 'RH' WITH (DATA_COMPRESSION = ROW); --> 48
+CREATE INDEX X ON T_EMPLOYEE_EMP (EMP_SEXE) WHERE EMP_SERVICE = 'RH' WITH (DATA_COMPRESSION = PAGE); --> 31
+CREATE INDEX X ON T_EMPLOYEE_EMP (EMP_SEXE) INCLUDE (EMP_SERVICE) WITH (DATA_COMPRESSION = PAGE);--> 1410
+CREATE INDEX X ON T_EMPLOYEE_EMP (EMP_SERVICE) INCLUDE (EMP_SEXE) WITH (DATA_COMPRESSION = PAGE); --> 36 (UC = 15, TE = 20)
+
+DROP INDEX XC ON T_EMPLOYEE_EMP
+CREATE COLUMNSTORE INDEX XC ON T_EMPLOYEE_EMP (EMP_SERVICE, EMP_SEXE); --> 3 segments (UC = 500, TE = 300)
+                                                                                      (UC = 0, TE = 4 ms
+
+-- vue indexée
+CREATE VIEW V_EMP_SEXE_SERVICE
+WITH SCHEMABINDING
+AS
+SELECT EMP_SERVICE, EMP_SEXE, COUNT_BIG(*) AS NOMBRE
+FROM   [dbo].[T_EMPLOYEE_EMP]
+GROUP  BY EMP_SERVICE, EMP_SEXE;
+GO
+
+CREATE UNIQUE CLUSTERED INDEX XV ON V_EMP_SEXE_SERVICE (EMP_SERVICE, EMP_SEXE);
+GO
+
+Si version Standard alors utiliser le tag NOEXPAND et la vue
+*/
+
+-- 1
+SELECT COUNT(*), EMP_SEXE
+FROM   T_EMPLOYEE_EMP
+WHERE  EMP_SERVICE = 'RH'
+GROUP  BY EMP_SEXE;
+
+-- 2
+SELECT COUNT(*) AS NOMBRE, 'Homme' AS SEXE
+FROM   T_EMPLOYEE_EMP
+WHERE  EMP_SERVICE = 'RH'
+  AND  EMP_SEXE = 'Homme'
+UNION
+SELECT COUNT(*) AS NOMBRE, 'Femme' AS SEXE
+FROM   T_EMPLOYEE_EMP
+WHERE  EMP_SERVICE = 'RH'
+  AND  EMP_SEXE = 'Femme';
+GO
+ 
+-- 3
+SELECT COUNT(*) AS HOMME, 
+       (SELECT COUNT(*) 
+        FROM   T_EMPLOYEE_EMP
+        WHERE  EMP_SERVICE = 'RH'
+          AND  EMP_SEXE = 'Femme') AS FEMME
+FROM   T_EMPLOYEE_EMP
+WHERE  EMP_SERVICE = 'RH'
+  AND  EMP_SEXE = 'Homme';
+GO
+
+-- 4
+SELECT COUNT(*) - (SELECT COUNT(*) 
+                   FROM   T_EMPLOYEE_EMP E2
+                   WHERE  E2.EMP_SERVICE = E1.EMP_SERVICE
+                      AND  EMP_SEXE = 'Femme') AS HOMME,
+       (SELECT COUNT(*) 
+        FROM   T_EMPLOYEE_EMP E3
+        WHERE  E3.EMP_SERVICE = E1.EMP_SERVICE
+          AND  EMP_SEXE = 'Femme') AS FEMME
+FROM   T_EMPLOYEE_EMP E1
+WHERE  EMP_SERVICE = 'RH'
+GROUP  BY EMP_SERVICE;
+GO
+   
+
+-- 5
+SELECT SUM(CASE EMP_SEXE
+             WHEN 'Homme' THEN 1
+             WHEN 'Femme' THEN 0
+           END) AS NOMBRE_HOMME,
+       SUM(CASE EMP_SEXE
+             WHEN 'Homme' THEN 0
+             WHEN 'Femme' THEN 1
+           END) AS NOMBRE_FEMME
+FROM  dbo.T_EMPLOYEE_EMP
+WHERE EMP_SERVICE= 'RH';
+GO
+ 
+-- 6
+SELECT COUNT(EMP_SEXE) AS NOMBRE,
+       CASE EMP_SEXE
+	  WHEN 'Femme' THEN 'Femme'
+	  WHEN 'Homme' THEN 'Homme'
+	  ELSE 'Unknown'
+       END AS SEXE
+FROM   dbo.T_EMPLOYEE_EMP
+WHERE  EMP_SERVICE= 'RH'
+GROUP  BY EMP_SEXE;
+GO
+
+
+-- 7 
+ SELECT COUNT(*) AS Nombre, 'Femme' AS Sexe 
+ FROM  dbo.T_EMPLOYEE_EMP 
+ WHERE EMP_ID NOT IN (SELECT EMP_ID 
+                       FROM   dbo.T_EMPLOYEE_EMP 
+                      WHERE  EMP_SERVICE <> 'RH' 
+                         OR  EMP_SEXE = 'Homme') 
+ UNION ALL 
+ SELECT COUNT(*) AS Nombre, 'Homme' AS Sexe 
+ FROM  dbo.T_EMPLOYEE_EMP 
+ WHERE EMP_ID NOT IN (SELECT EMP_ID 
+                      FROM   dbo.T_EMPLOYEE_EMP 
+                      WHERE  EMP_SERVICE <> 'RH' 
+                         OR  EMP_SEXE = 'Femme');
+GO
+
+
+
+
--- a/restauration.sql
+++ b/restauration.sql
@ -0,0 +1,28 @@
+USE DB_GRAND_HOTEL;
+GO
+SELECT name, physical_name
+FROM   sys.database_files
+WHERE  type_desc = 'rows'; 
+GO
+/*
+name	physical_name
+DB_GRAND_HOTEL	H:\DATABASE_SQL\SQL2019FBIN2\DATA\DB_GRAND_HOTEL.mdf
+F_DATA_1	H:\DATABASE_SQL\SQL2019FBIN2\DATA\F_DATA_1.ndf
+F_DATA_2	H:\DATABASE_SQL\SQL2019FBIN2\DATA\F_DATA_2.ndf
+F_PART_OLD	H:\DATABASE_SQL\SQL2019FBIN2\DATA\HOTEL_PART_OLD.ndf
+F_PART_2006	H:\DATABASE_SQL\SQL2019FBIN2\DATA\HOTEL_PART_2006.ndf
+F_PART_2007	H:\DATABASE_SQL\SQL2019FBIN2\DATA\HOTEL_PART_2007.ndf
+F_PART_2008	H:\DATABASE_SQL\SQL2019FBIN2\DATA\HOTEL_PART_2008.ndf
+F_PART_2009	H:\DATABASE_SQL\SQL2019FBIN2\DATA\HOTEL_PART_2009.ndf
+*/
+-- 1) mettre la base de données "OFF line" (NOTER l'heure à la quelle la commande est passée !)
+-- 2) supprimer un des fichiers de données
+-- 3) tentez de mettre la base "ON line"... que va t-il se passer (regarder le journal d'événement)
+-- 4) sauvegarder à l'aide d'une commande SQL (ne pas passer par l'IHM) la queue du journal de transaction
+-- 5) supprimer la base
+-- 6) utiliser l'assistant de restauration pour restaurer l'intégralité de la base
+-- 7) consatez si vous avez perdu ou non des données en comparant le dernier INSERT dans la table HORLOGE et l'heure notée
+
+
+
+
--- a/patitionnement.sql
+++ b/patitionnement.sql
@ -0,0 +1,24 @@
+-- création des espaces de stockage
+ALTER DATABASE ... ADD FILEGROUP ...
+ALTER DATABASE ... ADD FILE ( ... ) TO FILEGROUP ...
+
+-- 1) création de la fonction de partitionnement
+CREATE PARTITION FUNCTION PF_DATE_FACTURE (DATETIME2(0))
+AS RANGE RIGHT
+FOR VALUES ('2018-01-01', '2019-01-01', '2020-01-01');
+
+-- 2) création du schéma de répartition
+CREATE PARTITION SCHEME PS_DATE_FACTURE 
+AS PARTITION PF_DATE_FACTURE
+TO (FG_OLD, FG_2018, FG_2019, FG_2020);
+
+-- 3) création de l'objet sur la partition 
+CREATE TABLE ( ... )
+ON PS_DATE_FACTURE (colonne_critère)
+
+CREATE INDEX ( ... ) --> la première colonne de la clef d'index doit être la colonne critère
+ON PS_DATE_FACTURE (colonne_critère)
+
+
+
+
--- a/IT/SQL/SCRIPTS
+++ b/IT/SQL/SCRIPTS
@ -0,0 +1,63 @@
+-- le compte de connexion CNX_ADMIN, doit être doté des privilèges suivants :
+USE master;
+GO
+GRANT VIEW SERVER STATE, 
+      ADMINISTER BULK OPERATIONS, 
+      CREATE ANY DATABASE
+--   ON SERVER::[HPZ840FB\SQL2019FBIN2]
+   TO CNX_ADMIN;
+GO
+
+USE DB_GRAND_HOTEL;
+GO
+-- l'utilisateur USR_LECTEUR, doit être doté des privilèges suivants :
+--> SELECT sur l'intégralité de la base
+GRANT SELECT 
+--   ON DATABASE::DB_GRAND_HOTEL
+   TO USR_LECTEUR;
+
+-- l'utilisateur USR_ECRIVAIN, doit être doté des privilèges suivants :
+-->SELECT, INSERT, UPDATE, DELETE sur l'intégralité de la base
+--> mais aussi EXECUTE sur la base, sauf sur le schema dbo.
+GRANT SELECT, INSERT, UPDATE, DELETE, EXECUTE
+--   ON DATABASE::DB_GRAND_HOTEL
+   TO USR_ECRIVAIN;
+
+DENY EXECUTE
+   ON SCHEMA::dbo
+   TO USR_ECRIVAIN;
+
+-- l'utilisateur USR_ADMIN, doit avoir tous les privilèges sur la base
+GRANT CONTROL
+--   ON DATABASE::DB_GRAND_HOTEL
+   TO USR_ADMIN;  
+
+-- l'utilisateur USR_REPORT, doit être doté des privilèges de lecture sur la base sauf schéma dbo.
+GRANT SELECT
+--   ON DATABASE::DB_GRAND_HOTEL
+   TO USR_REPORT;  
+
+DENY SELECT
+   ON SCHEMA::dbo
+   TO USR_REPORT;
+
+
+
+/*
+GRANT <liste de privilèges>
+   ON <objet à privilégier>
+   TO <liste des entités bénéficiaires>
+
+<liste de privilèges> ::=
+   <nom_privilège> [, <nom_privilège2> [, <nom_privilège3> [, ... ] ]
+
+<nom_prilège> ::= identifiant_SQL
+
+<objet à privilégier> ::=
+{ <nom_objet> | <classe_conteneur>::<nom_conteneur> }
+*/
+
+
+
+
+
--- a/IT/SQL/SCRIPTS
+++ b/IT/SQL/SCRIPTS
@ -0,0 +1,27 @@
+USE master;
+GO
+
+CREATE MASTER KEY ENCRYPTION 
+   BY PASSWORD = 'Vive la Covid-19 !';
+GO
+
+BACKUP MASTER KEY TO FILE = 'H:\DATABASE_SQL\BACKUPS\SQL2019FBIN2\MK.bkp'
+ENCRYPTION BY PASSWORD = 'Vive la Covid-19 !'
+
+CREATE CERTIFICATE CRT_FOR_TDE
+   WITH SUBJECT = 'Certificat pour le chiffrement TDE',
+   EXPIRY_DATE = '2022-01-01' ;
+GO
+
+USE [DB_GRAND_HOTEL];
+GO
+
+CREATE DATABASE ENCRYPTION KEY
+WITH ALGORITHM = AES_128
+ENCRYPTION BY SERVER CERTIFICATE CRT_FOR_TDE;
+GO
+
+ALTER DATABASE [DB_GRAND_HOTEL]
+SET ENCRYPTION ON;
+GO
+
--- a/aujourd'hui.sql
+++ b/aujourd'hui.sql
@ -0,0 +1,103 @@
+WITH T AS
+(
+SELECT CONNEXION.name AS LOGIN_NAME,
+       GRANTEE.default_schema_name AS DEFAULT_SCHEMA,
+       PRIVILEGE.state_desc AS SQL_ORDER,
+       GRANTOR.name AS GRANTOR,
+       GRANTEE.name AS GRANTEE,
+       PRIVILEGE."permission_name" AS PRIVILEGE,
+       s.name AS OBJECT_SCHEMA,
+       o.name AS OBJECT_NAME,
+       LTRIM(STUFF((SELECT ', ' + name
+                    FROM   sys.columns AS c
+                    WHERE  PRIVILEGE.major_id = c.object_id
+                      AND  PRIVILEGE.minor_id = c.column_id
+                    FOR XML PATH('')), 1, 1, '' )) AS COLUMN_LIST,
+       PRIVILEGE.class_desc AS OBJECT_CLASS,
+       CASE PRIVILEGE.class
+          WHEN  0 THEN DB_NAME()
+          WHEN  1 THEN o.type_desc
+          WHEN  3 THEN ss.name COLLATE database_default
+          WHEN  4 THEN dbp.name
+          WHEN  5 THEN asb.name
+          WHEN  6 THEN typ.name
+          WHEN 10 THEN xsc.name
+      END AS OBJECT_TYPE_OR_NAME
+FROM   sys.database_principals AS GRANTEE
+       LEFT OUTER JOIN sys.server_principals AS CONNEXION
+            ON GRANTEE.sid = CONNEXION.sid
+       LEFT OUTER JOIN sys.database_permissions AS PRIVILEGE
+            ON GRANTEE.principal_id = PRIVILEGE.grantee_principal_id
+       LEFT OUTER JOIN sys.database_principals AS GRANTOR
+            ON PRIVILEGE.grantor_principal_id = GRANTOR.principal_id
+-- lien avec les objets primaires
+       LEFT OUTER JOIN sys.objects AS o
+            ON PRIVILEGE.major_id = o.object_id AND PRIVILEGE.class = 1
+            LEFT OUTER JOIN sys.schemas AS s
+                 ON o.schema_id = s.schema_id
+-- lien avec les schémas
+       LEFT OUTER JOIN sys.schemas AS ss
+            ON PRIVILEGE.major_id = ss.schema_id    
+               AND minor_id = 0 AND PRIVILEGE.class = 3
+-- lien avec les "principals" de la base de données
+       LEFT OUTER JOIN sys.database_principals AS dbp
+            ON PRIVILEGE.major_id = dbp.principal_id
+               AND minor_id = 0 AND PRIVILEGE.class = 4
+-- lien avec les "assembly"
+       LEFT OUTER JOIN sys.assemblies AS asb
+            ON PRIVILEGE.major_id = asb.assembly_id  
+               AND minor_id = 0 AND PRIVILEGE.class = 5
+-- lien avec les "type"             6 =
+       LEFT OUTER JOIN sys.types AS typ
+            ON PRIVILEGE.major_id = typ.user_type_id
+               AND minor_id = 0 AND PRIVILEGE.class = 6
+-- lien avec les collections de schémas XML
+       LEFT OUTER JOIN sys.xml_schema_collections AS xsc
+            ON PRIVILEGE.major_id = xsc.xml_collection_id
+               AND minor_id = 0 AND PRIVILEGE.class = 10
+-- lien avec les types de message  
+       LEFT OUTER JOIN sys.service_message_types AS smt
+            ON PRIVILEGE.major_id = smt.message_type_id
+               AND minor_id = 0 AND PRIVILEGE.class = 15   
+-- lien avec les contrats de service
+       LEFT OUTER JOIN sys.service_contracts AS sc
+            ON PRIVILEGE.major_id = sc.service_contract_id
+               AND minor_id = 0 AND PRIVILEGE.class = 16   
+-- lien avec les services
+       LEFT OUTER JOIN sys.services AS srv
+            ON PRIVILEGE.major_id = srv.service_id
+               AND minor_id = 0 AND PRIVILEGE.class = 17         
+-- lien avec les liaisons de service distant
+       LEFT OUTER JOIN sys.remote_service_bindings AS rsb
+            ON PRIVILEGE.major_id = rsb.remote_service_binding_id
+               AND minor_id = 0 AND PRIVILEGE.class = 18   
+-- lien avec les 19 = Itinéraire
+       LEFT OUTER JOIN sys.routes AS r
+            ON PRIVILEGE.major_id = r.route_id
+               AND minor_id = 0 AND PRIVILEGE.class = 19   
+-- lien avec les cataloguec de texte intégral
+       LEFT OUTER JOIN sys.fulltext_catalogs AS ftc
+            ON PRIVILEGE.major_id = ftc.fulltext_catalog_id
+               AND minor_id = 0 AND PRIVILEGE.class = 23
+-- lien avec les clés symétriques
+       LEFT OUTER JOIN sys.symmetric_keys AS sk
+            ON PRIVILEGE.major_id = sk.symmetric_key_id
+               AND minor_id = 0 AND PRIVILEGE.class = 24
+-- lien avec les certificats
+       LEFT OUTER JOIN sys.certificates AS ctf
+            ON PRIVILEGE.major_id = ctf.certificate_id
+               AND minor_id = 0 AND PRIVILEGE.class = 25
+-- lien avec les clés asymétriques
+       LEFT OUTER JOIN sys.asymmetric_keys AS ask
+            ON PRIVILEGE.major_id = ask.asymmetric_key_id
+               AND minor_id = 0 AND PRIVILEGE.class = 26
+WHERE  GRANTEE.type = 'S' --> SQL_USER
+)
+SELECT COALESCE (N'EXECUTE AS USER = '''+ GRANTOR + N'''; ' +
+                 SQL_ORDER + N' ' + PRIVILEGE + N' ON ' +
+                 COALESCE('[' + OBJECT_SCHEMA + N'].[' + OBJECT_NAME +'] ' COLLATE French_CI_AI +
+                          COALESCE(N'(' + COLUMN_LIST + N')' COLLATE French_CI_AI, ''),  
+                          OBJECT_CLASS + N'::' + OBJECT_TYPE_OR_NAME COLLATE French_CI_AI) +
+                 N' TO ' + GRANTEE +'; REVERT;' COLLATE French_CI_AI, '') AS SQL_COMMAND,
+      *
+FROM  T;
--- a/ORSYS/MAITENANCE
+++ b/ORSYS/MAITENANCE
@ -0,0 +1,134 @@
+USE master;
+GO
+
+CREATE PROCEDURE dbo.sp__ADMIN_RECALC_STATS
+AS
+/******************************************************************************
+* NATURE  : PROCEDURE                                                         *
+* OBJECT  : master.dbo.sp__ADMIN_RECALC_STAT                                  *
+* CREATE  : 2020-06-26                                                        * 
+* VERSION : 1                                                                 *
+* SYSTEM  : OUI                                                               *
+*******************************************************************************
+* Frédéric BROUARD  -  alias SQLpro  -   SARL SQL SPOT  -  SQLpro@sqlspot.com *
+* Architecte de données :  expertise, audit, conseil, formation, modélisation *
+* tuning, sur les SGBD Relationnels, le langage SQL, MS SQL Server/PostGreSQL *
+* blog: http://blog.developpez.com/sqlpro  site: http://sqlpro.developpez.com *
+*******************************************************************************
+* PURPOSE : recalcul des statistiques d'une base                              *
+*******************************************************************************
+* INPUTS :                                                                    *
+*    néant                                                                    *
+*******************************************************************************
+* EXEMPLE :                                                                   *
+*    USE maBase;                                                              *
+*    EXEC  sp__ADMIN_RECALC_STAT                                              *
+******************************************************************************/
+SET NOCOUNT ON;
+DECLARE @SQL NVARCHAR(max) = N''
+SELECT @SQL = @SQL + N'UPDATE STATISTICS [' + s.name + '].[' 
+                                            + o.name + '] ([' 
+                                            + st.name + ']) WITH FULLSCAN;' 
+FROM   sys.stats AS st
+       INNER JOIN sys.objects AS o ON st.object_id = o.object_id
+       INNER JOIN sys.schemas AS s ON o.schema_id = s.schema_id
+       CROSS APPLY sys.dm_db_stats_properties(st.object_id, st.stats_id)
+WHERE modification_counter > 0 
+       AND 100.0 * modification_counter / rows >
+              CASE  
+                 WHEN 10 + (13.8 - LOG(rows)) / 2 < 0.5 
+                    THEN 0.5 
+                 ELSE 10 + (13.8 - LOG(rows)) / 2 
+              END
+/* VARIANTE 1 du WHERE
+WHERE   modification_counter > 0
+  AND   100.0 * modification_counter / rows < 
+           CASE WHEN rows + modification_counter < 100000 
+              THEN 10 
+              ELSE LOG10(modification_counter + rows) 
+                   / (1 + (LOG10(modification_counter + rows) - LOG10(100000))) END
+*/
+/* VARIANTE 2 du WHERE
+WHERE 1 = CASE WHEN COALESCE(CAST(modification_counter AS REAL) / rows, 1) 
+                     > 0.3
+                   THEN 1
+                WHEN rows < 100000 AND 
+                     COALESCE(CAST(modification_counter AS REAL) / rows, 1) 
+                     > 0.1
+                  THEN 1
+                WHEN rows > 300000000 AND 
+                     COALESCE(CAST(modification_counter AS REAL) / rows, 1) 
+                     > 0.0048
+                  THEN 1
+                WHEN rows BETWEEN 100000 AND 300000000 AND   
+                     COALESCE(CAST(modification_counter AS REAL) / rows, 1) 
+                     > (20 - LOG(rows)) 
+                  THEN 1
+               ELSE 0
+           END;
+*/
+EXEC (@SQL);
+GO
+
+EXEC sp_MS_marksystemobject 'dbo.sp__ADMIN_RECALC_STATS';
+GO
+
+CREATE PROCEDURE dbo.sp__ADMIN_DEFRAG_INDEX
+AS
+/******************************************************************************
+* NATURE  : PROCEDURE                                                         *
+* OBJECT  : master.dbo.sp__ADMIN_DEFRAG_INDEX                                  *
+* CREATE  : 2020-06-26                                                        * 
+* VERSION : 1                                                                 *
+* SYSTEM  : OUI                                                               *
+*******************************************************************************
+* Frédéric BROUARD  -  alias SQLpro  -   SARL SQL SPOT  -  SQLpro@sqlspot.com *
+* Architecte de données :  expertise, audit, conseil, formation, modélisation *
+* tuning, sur les SGBD Relationnels, le langage SQL, MS SQL Server/PostGreSQL *
+* blog: http://blog.developpez.com/sqlpro  site: http://sqlpro.developpez.com *
+*******************************************************************************
+* PURPOSE : défragmentation des idex d'une base                               *
+*******************************************************************************
+* INPUTS :                                                                    *
+*    néant                                                                    *
+*******************************************************************************
+* EXEMPLE :                                                                   *
+*    USE maBase;                                                              *
+*    EXEC  sp__ADMIN_DEFRAG_INDEX                                             *
+*******************************************************************************
+* IMPROVE :                                                                   *
+*  version Enterprise                                                         *
+*  ALTER INDEX ... REBUILD WITH (ONLINE = ON)                                 *
+******************************************************************************/
+SET NOCOUNT ON;
+DECLARE @SQL NVARCHAR(max) = N''
+SELECT @SQL = @SQL + 
+       CASE WHEN i.name IS NULL
+               THEN N'ALTER TABLE [' + s.name + '].[' + o.name + '] REBUILD;'
+            WHEN avg_fragmentation_in_percent > 30
+               THEN N'ALTER INDEX [' + i.name + '] ON [' + s.name + '].[' + o.name + '] REBUILD;'
+            ELSE    N'ALTER INDEX [' + i.name + '] ON [' + s.name + '].[' + o.name + '] REORGANIZE;'
+       END
+FROM   sys.dm_db_index_physical_stats(DB_NAME(), NULL, NULL, NULL, NULL) AS ips
+       INNER JOIN sys.objects AS o ON ips.object_id = o.object_id
+       INNER JOIN sys.schemas AS s ON o.schema_id = s.schema_id
+       INNER JOIN sys.indexes AS i ON ips.object_id = i.object_id AND ips.index_id = i.index_id
+WHERE  page_count > 64
+  AND  avg_fragmentation_in_percent > 10
+  AND  ips.index_id < 1000;
+EXEC (@SQL);
+GO
+
+EXEC sp_MS_marksystemobject 'sp__ADMIN_DEFRAG_INDEX';
+GO
+
+--> à mettre dans un travail de l'AGENT SQL 1 fois par jour aux heures creuses
+DECLARE @SQL NVARCHAR(max) = N'';
+SELECT @SQL = @SQL + 'USE [' + name + '];EXEC sp__ADMIN_DEFRAG_INDEX;EXEC sp__ADMIN_RECALC_STATS;'
+FROM   sys.databases
+WHERE  name NOT IN ('model', 'tempdb')
+  AND  state = 0
+  AND  source_database_id IS NULL;
+EXEC (@SQL);
+
+
--- a/partitionnement.sql
+++ b/partitionnement.sql
@ -0,0 +1,48 @@
+SELECT s.name AS TABLE_SCHEMA, 
+       o.name AS TABLE_NAME, 
+       i.name AS INDEX_NAME, 
+       f.name AS PARTITION_FUNCTION, 
+       ps.name AS PARTITION_SCHEMA, 
+       p.partition_number AS PART_NUM, 
+       fg.name AS FILE_GROUP, 
+       rows AS ROW_COUNT, 
+       SUM(dbf.size) OVER(PARTITION BY fg.name) AS PAGE_COUNT, 
+       au.total_pages AS USED_PAGES,
+       CASE boundary_value_on_right
+           WHEN 1
+           THEN 'RIGHT'
+           ELSE 'LEFT'
+       END AS RANGE, 
+       rv1.value AS LOW_VALUE, 
+       rv2.value AS HIGH_VALUE
+FROM sys.partitions p
+     JOIN sys.indexes i
+     ON p.object_id = i.object_id
+        AND p.index_id = i.index_id
+     JOIN sys.objects AS o
+     ON i.object_id = o.object_id
+     JOIN sys.schemas AS s
+     ON o.schema_id = s.schema_id
+     JOIN sys.partition_schemes ps
+     ON ps.data_space_id = i.data_space_id
+     JOIN sys.partition_functions f
+     ON f.function_id = ps.function_id
+     JOIN sys.destination_data_spaces dds
+     ON dds.partition_scheme_id = ps.data_space_id
+        AND dds.destination_id = p.partition_number
+     JOIN sys.filegroups fg
+     ON dds.data_space_id = fg.data_space_id
+     JOIN sys.database_files AS dbf
+     ON dbf.data_space_id = fg.data_space_id
+     JOIN sys.allocation_units au
+     ON au.container_id = p.partition_id
+     LEFT OUTER JOIN sys.partition_range_values rv2
+     ON f.function_id = rv2.function_id
+        AND p.partition_number = rv2.boundary_id
+     LEFT OUTER JOIN sys.partition_range_values rv1
+     ON f.function_id = rv1.function_id
+        AND p.partition_number - 1 = rv1.boundary_id
+ORDER BY TABLE_SCHEMA, 
+         TABLE_NAME, 
+         INDEX_NAME, 
+         LOW_VALUE;
--- a/ORSYS/Métadonnées
+++ b/ORSYS/Métadonnées
@ -0,0 +1,30 @@
+-- métadonnées des bases et fichiers de toute sles bases
+
+SELECT * 
+FROM   sys.databases;
+
+SELECT SUM(size) * 8 / SQUARE(1024) AS SIZE_GB,
+       type_desc, 
+       SUM(SUM(size) * 8 / SQUARE(1024)) OVER() AS TOTAL_SIZE_GB
+FROM   sys.master_files
+GROUP  BY type_desc
+ORDER  BY type_desc;
+
+SELECT SUM(size) * 8 / SQUARE(1024) AS SIZE_GB,
+       db.name, 
+       SUM(SUM(size) * 8 / SQUARE(1024)) OVER() AS TOTAL_SIZE_GB
+FROM   sys.master_files AS mf
+       JOIN sys.databases AS db
+          ON mf.database_id = db.database_id
+GROUP  BY db.name
+ORDER  BY SIZE_GB DESC;
+
+
+SELECT SUM(size) * 8 / SQUARE(1024) AS SIZE_GB,
+       db.name, type_desc,
+       SUM(SUM(size) * 8 / SQUARE(1024)) OVER() AS TOTAL_SIZE_GB
+FROM   sys.master_files AS mf
+       JOIN sys.databases AS db
+          ON mf.database_id = db.database_id
+GROUP  BY db.name, type_desc
+ORDER BY type_desc, SIZE_GB DESC;
--- a/partitionnement.sql
+++ b/partitionnement.sql
@ -0,0 +1,48 @@
+SELECT s.name AS TABLE_SCHEMA, 
+       o.name AS TABLE_NAME, 
+       i.name AS INDEX_NAME, 
+       f.name AS PARTITION_FUNCTION, 
+       ps.name AS PARTITION_SCHEMA, 
+       p.partition_number AS PART_NUM, 
+       fg.name AS FILE_GROUP, 
+       rows AS ROW_COUNT, 
+       SUM(dbf.size) OVER(PARTITION BY fg.name) AS PAGE_COUNT, 
+       au.total_pages AS USED_PAGES,
+       CASE boundary_value_on_right
+           WHEN 1
+           THEN 'RIGHT'
+           ELSE 'LEFT'
+       END AS RANGE, 
+       rv1.value AS LOW_VALUE, 
+       rv2.value AS HIGH_VALUE
+FROM sys.partitions p
+     JOIN sys.indexes i
+     ON p.object_id = i.object_id
+        AND p.index_id = i.index_id
+     JOIN sys.objects AS o
+     ON i.object_id = o.object_id
+     JOIN sys.schemas AS s
+     ON o.schema_id = s.schema_id
+     JOIN sys.partition_schemes ps
+     ON ps.data_space_id = i.data_space_id
+     JOIN sys.partition_functions f
+     ON f.function_id = ps.function_id
+     JOIN sys.destination_data_spaces dds
+     ON dds.partition_scheme_id = ps.data_space_id
+        AND dds.destination_id = p.partition_number
+     JOIN sys.filegroups fg
+     ON dds.data_space_id = fg.data_space_id
+     JOIN sys.database_files AS dbf
+     ON dbf.data_space_id = fg.data_space_id
+     JOIN sys.allocation_units au
+     ON au.container_id = p.partition_id
+     LEFT OUTER JOIN sys.partition_range_values rv2
+     ON f.function_id = rv2.function_id
+        AND p.partition_number = rv2.boundary_id
+     LEFT OUTER JOIN sys.partition_range_values rv1
+     ON f.function_id = rv1.function_id
+        AND p.partition_number - 1 = rv1.boundary_id
+ORDER BY TABLE_SCHEMA, 
+         TABLE_NAME, 
+         INDEX_NAME, 
+         LOW_VALUE;
--- a/ORSYS/Métadonnées
+++ b/ORSYS/Métadonnées
@ -0,0 +1,18 @@
+SELECT * 
+FROM   sys.server_principals;
+
+SELECT * 
+FROM   sys.server_role_members;
+
+SELECT usr.name AS UTILISATEUR, 'MEMBRE DU ROLE', rol.name AS ROLE
+FROM   sys.server_role_members AS srm
+       JOIN sys.server_principals AS usr
+          ON srm.member_principal_id = usr.principal_id
+       JOIN sys.server_principals AS rol
+          ON srm.role_principal_id = rol.principal_id;
+
+SELECT p.*, ep.name
+FROM   sys.server_permissions AS p
+       LEFT OUTER JOIN sys.endpoints AS ep 
+            ON p.major_id = ep.endpoint_id AND p.class_desc = 'ENDPOINT'
+
--- a/ORSYS/Métrique
+++ b/ORSYS/Métrique
@ -0,0 +1,74 @@
+USE master;
+GO
+
+CREATE PROCEDURE dbo.sp__METRIQUE_STOCKAGE @REAJUSTE BIT = 0
+AS
+SET NOCOUNT ON;
+
+IF @REAJUSTE = 1
+--> réajustement des statistiques des espaces de stockage
+   DBCC UPDATEUSAGE (0);
+
+--> volume des transactions
+DECLARE @T TABLE (database_name sysname, log_size_mb FLOAT, log_space_used_percent FLOAT, STATUS bit);
+DECLARE @TRANSACTIONS_RESERVEES_MO BIGINT,
+        @TRANSACTIONS_UTILISEES_MO BIGINT,
+        @TRANSACTIONS_UTILISEES_POURCENT DECIMAL(5,2);
+INSERT INTO @T
+EXEC ('DBCC SQLPERF(LOGSPACE)')
+SELECT @TRANSACTIONS_RESERVEES_MO = ROUND(log_size_mb, 0),
+       @TRANSACTIONS_UTILISEES_MO = ROUND(log_size_mb * log_space_used_percent / 100.0, 0),
+       @TRANSACTIONS_UTILISEES_POURCENT = CAST(log_space_used_percent AS DECIMAL(5,2))
+FROM @T WHERE database_name = DB_NAME();
+
+-- taille de l'enveloppe de stockage :
+WITH
+T_FILES AS (
+SELECT CAST(ROUND(SUM(CASE WHEN "type" = 1
+                              THEN SIZE
+                           ELSE 0
+                      END) / 128.0, 0) AS BIGINT) AS TRANSACTIONS_RESERVEES_MO,
+       CAST(ROUND(SUM(CASE WHEN "type" != 1
+                              THEN SIZE
+                           ELSE 0
+                      END) / 128.0, 0) AS BIGINT) AS DONNEES_RESERVE_MO
+FROM   sys.database_files),
+T_DB AS (
+SELECT TRANSACTIONS_RESERVEES_MO + DONNEES_RESERVE_MO AS BASE_TAILLE_MO,
+       DONNEES_RESERVE_MO, TRANSACTIONS_RESERVEES_MO
+FROM   T_FILES),  
+T_PAGES AS (
+-- taille des pages données et index          
+SELECT CAST(ROUND(SUM(au.used_pages) / 128.0, 0) AS BIGINT) AS DONNEES_UTILISEES_MO,
+       CAST(ROUND(SUM(CASE
+                         WHEN it.internal_type IN (202, 204, 211, 212, 213, 214, 215, 216)
+                            THEN 0
+                         WHEN au.TYPE != 1
+                            THEN au.used_pages
+                         WHEN p.index_id < 2  
+                            THEN au.data_pages
+                         ELSE 0
+                      END) / 128.0, 0) AS BIGINT) AS TABLES_MO
+FROM   sys.partitions AS p
+       INNER JOIN sys.allocation_units au
+             ON p.partition_id = au.container_id
+         LEFT OUTER JOIN sys.internal_tables AS it
+               ON p.object_id = it.object_id)
+SELECT BASE_TAILLE_MO,
+       DONNEES_RESERVE_MO,
+       DONNEES_UTILISEES_MO,
+       CAST(100.0 * CAST( DONNEES_UTILISEES_MO AS FLOAT)
+            / DONNEES_RESERVE_MO AS DECIMAL(5,2)) AS DONNEES_UTILISEES_POURCENT,
+       TABLES_MO,
+       DONNEES_UTILISEES_MO - TABLES_MO AS INDEX_MO,
+       CAST(100.0 * CAST( TABLES_MO AS FLOAT)
+            / DONNEES_UTILISEES_MO AS DECIMAL(5,2)) AS TABLES_POURCENT ,
+       CAST(100.0 * CAST( DONNEES_UTILISEES_MO - TABLES_MO AS FLOAT)
+            / DONNEES_UTILISEES_MO AS DECIMAL(5,2)) AS INDEX_POURCENT,
+       TRANSACTIONS_RESERVEES_MO,
+       @TRANSACTIONS_UTILISEES_MO AS TRANSACTIONS_UTILISEES_MO,
+       @TRANSACTIONS_UTILISEES_POURCENT AS TRANSACTIONS_UTILISEES_POURCENT
+FROM   T_PAGES CROSS JOIN  T_DB;
+GO
+
+EXEC sp_MS_marksystemobject 'sp__METRIQUE_STOCKAGE'
--- a/IT/SQL/SCRIPTS
+++ b/IT/SQL/SCRIPTS
@ -0,0 +1,73 @@
+USE msdb;
+GO
+
+CREATE PROCEDURE dbo.P_BACKUP 
+   @MODE CHAR(1),          -- L : LOG, C : COMPLETE, D : DIFFERENTIAL
+   @PATH NVARCHAR(256),  
+   @DATETIME BIT = 1,
+   @RETAINSDAYS TINYINT
+AS
+/******************************************************************************
+* NATURE  : PROCEDURE                                                         *
+* OBJECT  : msdb.dbo.P_BACKUP                                                 *
+* CREATE  : 2020-06-26                                                        * 
+* VERSION : 1                                                                 *
+* SYSTEM  :NON                                                                *
+*******************************************************************************
+* Frédéric BROUARD  -  alias SQLpro  -   SARL SQL SPOT  -  SQLpro@sqlspot.com *
+* Architecte de données :  expertise, audit, conseil, formation, modélisation *
+* tuning, sur les SGBD Relationnels, le langage SQL, MS SQL Server/PostGreSQL *
+* blog: http://blog.developpez.com/sqlpro  site: http://sqlpro.developpez.com *
+*******************************************************************************
+* PURPOSE : sauvegarde de toutes les bases d'une instance                     *
+*******************************************************************************
+* INPUTS :                                                                    *
+*  @MODE CHAR(1),         L : LOG, C : COMPLETE, D : DIFFERENTIAL             *
+*  @PATH NVARCHAR(256),   chemin vers le répertoire de sauvegarde             *  
+*  @DATETIME BIT = 1,     ajoute ou non la date heure dans le nom du fichier  *
+*                         de sauvegarde                                       *
+*  @RETAINSDAYS TINYINT   si pas de dateheure dans le fichier de sauvegarde   *
+*                         alors cumule les sauvegarde mais ne retient que les *
+*                         n dernier jours                                     *
+*******************************************************************************
+* EXEMPLE :                                                                   *
+*    EXEC dbo.P_BACKUP 'C', 'C:\DATABASE\BACKUP', 1, NULL;                    *
+******************************************************************************/
+SET NOCOUNT ON;
+SET @MODE = UPPER(@MODE);
+IF RIGHT(@PATH, 1) <> '\'
+   SET @PATH = @PATH + '\';
+DECLARE @SQL NVARCHAR(max) = N'';
+SELECT @SQL = @SQL + N'BACKUP ' +
+       CASE @MODE 
+          WHEN N'L' THEN N'LOG '
+          ELSE N'DATABASE '
+       END + N'[' + name + '] TO DISK = ''' + @PATH + name +
+       CASE @DATETIME
+          WHEN 1 THEN N'_' + CONVERT(NVARCHAR(32), SYSDATETIME(), 121)
+          ELSE ''
+       END +
+       CASE @MODE 
+          WHEN N'L' THEN N'.TRN'
+          ELSE N'.BAK'
+       END + '''' + 
+       CASE WHEN @RETAINSDAYS IS NOT NULL AND @DATETIME = 0
+               THEN N' WITH RETAINDAYS = ' + CAST(@RETAINSDAYS AS VARCHAR(16))
+            ELSE N''
+       END + N';'
+FROM   sys.databases 
+WHERE  state = 0
+  AND  source_database_id IS NULL
+  AND  name NOT in ('model', 'tempdb')
+  AND  1 = CASE WHEN @MODE = 'L' AND recovery_model = 3 THEN 0
+                ELSE 1 END;
+GO
+
+--> planif de la sauvegarde FULL tous les jours
+EXEC dbo.P_BACKUP 'C', 'C:\DATABASE\BACKUP', 1, NULL;
+
+
+--> planif de la sauvegarde TRAN toutes les 30 minutes
+EXEC dbo.P_BACKUP 'L', 'C:\DATABASE\BACKUP', 1, NULL;
+
+
--- a/ORSYS/Reconfiuration
+++ b/ORSYS/Reconfiuration
@ -0,0 +1,8 @@
+EXEC sp_configure 'cost threshold for parallelism', 5 --> 12 (depuis la version 1999 !)
+EXEC sp_configure 'max degree of parallelism', 0 --> 0
+EXEC sp_configure 'max server memory (MB)', 64000 --> 0
+EXEC sp_configure 'optimize for ad hoc workloads', 1
+EXEC sp_configure 'backup compression default', 1
+EXEC sp_configure 'backup checksum default', 1
+RECONFIGURE
+
--- a/ORSYS/Rectifier
+++ b/ORSYS/Rectifier
@ -0,0 +1,7 @@
+SELECT db.name AS DATABASE_NAME, mf.name AS FILE_NAME, 
+       N'ALTER DATABASE [' + db.name + '] MODIFY FILE ( NAME = [' + mf.name + '], FILEGROWTH = 64 MB);'
+FROM   sys.master_files AS mf
+       JOIN sys.databases AS db
+          ON mf.database_id = db.database_id
+WHERE  is_percent_growth = 1
+  AND  db.database_id > 4;
--- a/ORSYS/Résoudre
+++ b/ORSYS/Résoudre
@ -0,0 +1,30 @@
+-- résoudre le problème des collations "croisées" entre la base de production et la tempdb
+-- en plaçant la base en mode d'autonomie partielle (containement = partial)
+
+-- vérifer au niveau du serveur que cette fonctionnalité est activée...
+--> (contained database authentication = 1)
+EXEC sp_configure 'show advanced options', 1;
+RECONFIGURE;
+GO
+EXEC sp_configure 'contained database authentication', 1;
+RECONFIGURE;
+GO
+
+-- ON DOIT MAINTENANT PLACER LA BASE EN MODE D'AUTONOMIE PARTIELLE
+
+-- on se met dans le contexte de la base DB_TEST
+USE DB_TEST;
+GO
+-- on devient l'unique utilisateur de la base
+ALTER DATABASE DB_TEST SET SINGLE_USER WITH ROLLBACK IMMEDIATE;
+GO
+-- on passe dans la base master, la base DB_TEST n'a plus aucun utilisateur
+use [master];
+GO
+ALTER DATABASE [DB_TEST] SET ... -- commande à passer sans aucun utilisateur
+GO
+-- one repasse la base de données en mode muti utilisateur
+ALTER DATABASE [DB_TEST] SET MULTI_USER
+GO
+
+
--- a/ORSYS/SQLServer-Performance-Poster
+++ b/ORSYS/SQLServer-Performance-Poster
--- a/ORSYS/Solution
+++ b/ORSYS/Solution
@ -0,0 +1,93 @@
+USE DB_GRAND_HOTEL;
+GO
+
+-- création des espaces de stockage
+ALTER DATABASE DB_GRAND_HOTEL ADD FILEGROUP FG_PART_OLD;
+ALTER DATABASE DB_GRAND_HOTEL 
+   ADD FILE (NAME = 'F_PART_OLD',
+             FILENAME = 'H:\DATABASE_SQL\SQL2019FBIN2\DATA\HOTEL_PART_OLD.ndf',
+             SIZE     = 25 MB,
+             FILEGROWTH = 10 MB)
+       TO FILEGROUP FG_PART_OLD;
+GO
+ALTER DATABASE DB_GRAND_HOTEL ADD FILEGROUP FG_PART_2006;
+ALTER DATABASE DB_GRAND_HOTEL 
+   ADD FILE (NAME = 'F_PART_2006',
+             FILENAME = 'H:\DATABASE_SQL\SQL2019FBIN2\DATA\HOTEL_PART_2006.ndf',
+             SIZE     = 25 MB,
+             FILEGROWTH = 10 MB)
+       TO FILEGROUP FG_PART_2006;
+GO
+ALTER DATABASE DB_GRAND_HOTEL ADD FILEGROUP FG_PART_2007;
+ALTER DATABASE DB_GRAND_HOTEL 
+   ADD FILE (NAME = 'F_PART_2007',
+             FILENAME = 'H:\DATABASE_SQL\SQL2019FBIN2\DATA\HOTEL_PART_2007.ndf',
+             SIZE     = 25 MB,
+             FILEGROWTH = 10 MB)
+       TO FILEGROUP FG_PART_2007;
+GO
+ALTER DATABASE DB_GRAND_HOTEL ADD FILEGROUP FG_PART_2008;
+ALTER DATABASE DB_GRAND_HOTEL 
+   ADD FILE (NAME = 'F_PART_2008',
+             FILENAME = 'H:\DATABASE_SQL\SQL2019FBIN2\DATA\HOTEL_PART_2008.ndf',
+             SIZE     = 25 MB,
+             FILEGROWTH = 10 MB)
+       TO FILEGROUP FG_PART_2008;
+GO
+
+-- 1) création de la fonction de partitionnement
+CREATE PARTITION FUNCTION PF_DATE_FACTURE (DATETIME)
+AS RANGE RIGHT
+FOR VALUES ('2006-01-01', '2007-01-01', '2008-01-01');
+
+-- 2) création du schéma de répartition
+CREATE PARTITION SCHEME PS_DATE_FACTURE 
+AS PARTITION PF_DATE_FACTURE
+TO (FG_PART_OLD, FG_PART_2006, FG_PART_2007, FG_PART_2008);
+GO
+
+-- 3) création de l'objet sur la partition 
+BEGIN TRANSACTION;
+BEGIN TRY
+   --> il faut commencer par retirer la contrainte FK de la table T_FACTURE_ITEM_ITM
+   ALTER TABLE [S_CHB].[T_FACTURE_ITEM_ITM] DROP CONSTRAINT [FK_T_FACTUR_CONTIENT_T_FACTUR];
+   --> il faut commencer par retirer la PK !!!
+   ALTER TABLE [S_CHB].[T_FACTURE_FAC] DROP CONSTRAINT [PK_T_FACTURE_FAC];
+   --> pas possible !
+   CREATE UNIQUE CLUSTERED INDEX X ON [S_CHB].[T_FACTURE_FAC] ([FAC_DATE], [FAC_ID])
+      ON PS_DATE_FACTURE(FAC_DATE);
+   --> remettre la PK (ATTENTION : par défaut la PK est créée sous forme d'index clustered)
+   ALTER TABLE [S_CHB].[T_FACTURE_FAC] 
+      ADD CONSTRAINT [PK_T_FACTURE_FAC] PRIMARY KEY NONCLUSTERED ([FAC_ID])
+      ON FG_DATA;
+   --> remettre la FK
+   ALTER TABLE [S_CHB].[T_FACTURE_ITEM_ITM] 
+      ADD CONSTRAINT [FK_T_FACTUR_CONTIENT_T_FACTUR] 
+          FOREIGN KEY ([FAC_ID]) 
+          REFERENCES [S_CHB].[T_FACTURE_FAC] (FAC_ID);
+   COMMIT;
+-- tout se passe bien => COMMIT
+END TRY
+BEGIN CATCH
+-- quelque chose se passe mal => ROLLBACK
+   IF XACT_STATE() <> 0
+      ROLLBACK;
+   THROW;
+END CATCH
+
+-- voir les stats de lignes des partitions
+SELECT * 
+FROM   sys.dm_db_partition_stats AS ps
+       JOIN sys.indexes AS i
+          ON ps.object_id = i.object_id AND ps.index_id = i.index_id
+WHERE  ps.object_id = OBJECT_ID('[S_CHB].[T_FACTURE_FAC]')     
+AND    i.type_desc = 'CLUSTERED';
+
+
+
+
+
+
+
+
+
--- a/ORSYS/Solution
+++ b/ORSYS/Solution
@ -0,0 +1,146 @@
+ALTER DATABASE [DB_GRAND_HOTEL] ADD FILEGROUP FG_DATA;
+GO
+ALTER DATABASE [DB_GRAND_HOTEL] 
+  ADD FILE (NAME       = 'F_DATA_1',
+            FILENAME   = 'H:\DATABASE_SQL\SQL2019FBIN2\DATA\F_DATA_1.ndf',
+            SIZE       = 100 MB,
+            FILEGROWTH = 64 MB)
+  TO FILEGROUP FG_DATA;
+GO
+ALTER DATABASE [DB_GRAND_HOTEL] 
+  ADD FILE (NAME       = 'F_DATA_2',
+            FILENAME   = 'H:\DATABASE_SQL\SQL2019FBIN2\DATA\F_DATA_2.ndf',
+            SIZE       = 100 MB,
+            FILEGROWTH = 64 MB)
+  TO FILEGROUP FG_DATA;
+GO
+ALTER DATABASE [DB_GRAND_HOTEL] 
+   MODIFY FILEGROUP FG_DATA DEFAULT;
+GO
+
+
+--> déplacement des tables et index
+USE [DB_GRAND_HOTEL]
+GO
+CREATE  UNIQUE  CLUSTERED  INDEX [PK_T_ADRESSE_ADR] ON [S_PRS].[T_ADRESSE_ADR] ([ADR_ID] ASC) WITH (DROP_EXISTING = ON)  ON FG_DATA;
+CREATE  INDEX [TJ_ADRPAY_FK] ON [S_PRS].[T_ADRESSE_ADR] ([PAY_ID] ASC) WITH (DROP_EXISTING = ON)  ON FG_DATA;
+CREATE  INDEX [SITUE__ADR__FK] ON [S_PRS].[T_ADRESSE_ADR] ([STT_ID] ASC) WITH (DROP_EXISTING = ON)  ON FG_DATA;
+CREATE  INDEX [ADR_DEFAUT2_FK] ON [S_PRS].[T_ADRESSE_ADR] ([PRS_ID] ASC) WITH (DROP_EXISTING = ON)  ON FG_DATA;
+CREATE  UNIQUE  CLUSTERED  INDEX [PK_T_CHAMBRE_CHB] ON [S_CHB].[T_CHAMBRE_CHB] ([CHB_ID] ASC) WITH (DROP_EXISTING = ON)  ON FG_DATA;
+CREATE  UNIQUE  CLUSTERED  INDEX [PK_T_CLIENT_CLI] ON [S_CEE].[T_CLIENT_CLI] ([PRS_ID] ASC) WITH (DROP_EXISTING = ON)  ON FG_DATA;
+CREATE  UNIQUE  CLUSTERED  INDEX [PK_T_DNS] ON [S_PRS].[T_DNS] ([DNS_ID] ASC) WITH (DROP_EXISTING = ON)  ON FG_DATA;
+CREATE  UNIQUE  INDEX [UK_DNS_NAME] ON [S_PRS].[T_DNS] ([DNS_NAME] ASC) WITH (DROP_EXISTING = ON)  ON FG_DATA;
+CREATE  UNIQUE  CLUSTERED  INDEX [PK_T_EMAIL_EML] ON [S_PRS].[T_EMAIL_EML] ([EML_ID] ASC) WITH (DROP_EXISTING = ON)  ON FG_DATA;
+CREATE  INDEX [TJ_EMLSTT_FK] ON [S_PRS].[T_EMAIL_EML] ([STT_ID] ASC) WITH (DROP_EXISTING = ON)  ON FG_DATA;
+CREATE  INDEX [LOCALISE_FK] ON [S_PRS].[T_EMAIL_EML] ([DNS_ID] ASC) WITH (DROP_EXISTING = ON)  ON FG_DATA;
+CREATE  INDEX [MAIL_DEFAUT_FK] ON [S_PRS].[T_EMAIL_EML] ([PRS_ID] ASC) WITH (DROP_EXISTING = ON)  ON FG_DATA;
+CREATE  UNIQUE  CLUSTERED  INDEX [PK_T_EMPLOYE_EMP] ON [S_CEE].[T_EMPLOYE_EMP] ([PRS_ID] ASC) WITH (DROP_EXISTING = ON)  ON FG_DATA;
+CREATE  UNIQUE  INDEX [AK_UK_EMP_MAT_T_EMPLOY] ON [S_CEE].[T_EMPLOYE_EMP] ([EMP_NATRICULE] ASC) WITH (DROP_EXISTING = ON)  ON FG_DATA;
+CREATE  INDEX [ASSOCIATION_21_FK] ON [S_CEE].[T_EMPLOYE_EMP] ([SVC_ID] ASC) WITH (DROP_EXISTING = ON)  ON FG_DATA;
+CREATE  INDEX [ASSOCIATION_22_FK] ON [S_CEE].[T_EMPLOYE_EMP] ([T_E_PRS_ID] ASC) WITH (DROP_EXISTING = ON)  ON FG_DATA;
+CREATE  INDEX [INVESTI_FK] ON [S_CEE].[T_EMPLOYE_EMP] ([FCT_ID] ASC) WITH (DROP_EXISTING = ON)  ON FG_DATA;
+CREATE  UNIQUE  CLUSTERED  INDEX [PK_T_FACTURE_FAC] ON [S_CHB].[T_FACTURE_FAC] ([FAC_ID] ASC) WITH (DROP_EXISTING = ON)  ON FG_DATA;
+CREATE  INDEX [PAYE_FK] ON [S_CHB].[T_FACTURE_FAC] ([PRS_ID] ASC) WITH (DROP_EXISTING = ON)  ON FG_DATA;
+CREATE  INDEX [PAYEE_FK] ON [S_CHB].[T_FACTURE_FAC] ([PMT_ID] ASC) WITH (DROP_EXISTING = ON)  ON FG_DATA;
+CREATE  UNIQUE  CLUSTERED  INDEX [PK_T_FACTURE_ITEM_ITM] ON [S_CHB].[T_FACTURE_ITEM_ITM] ([ITM_ID] ASC) WITH (DROP_EXISTING = ON)  ON FG_DATA;
+CREATE  INDEX [CONTIENT_FK] ON [S_CHB].[T_FACTURE_ITEM_ITM] ([FAC_ID] ASC) WITH (DROP_EXISTING = ON)  ON FG_DATA;
+CREATE  INDEX [TAXE_FK] ON [S_CHB].[T_FACTURE_ITEM_ITM] ([TVA_ID] ASC) WITH (DROP_EXISTING = ON)  ON FG_DATA;
+CREATE  UNIQUE  CLUSTERED  INDEX [PK_T_J_APPLIQUE_APQ] ON [S_CLD].[T_J_APPLIQUE_APQ] ([PFM_ID] ASC, [PJR_DATE] ASC) WITH (DROP_EXISTING = ON)  ON FG_DATA;
+CREATE  INDEX [L_PJRPFM_FK] ON [S_CLD].[T_J_APPLIQUE_APQ] ([PJR_DATE] ASC) WITH (DROP_EXISTING = ON)  ON FG_DATA;
+CREATE  UNIQUE  CLUSTERED  INDEX [PK_T_J_TRAVAILLE_TRV] ON [S_CEE].[T_J_TRAVAILLE_TRV] ([PRS_ID] ASC, [PJR_DATE] ASC) WITH (DROP_EXISTING = ON)  ON FG_DATA;
+CREATE  INDEX [T_J_TRAVAILLE_TRV2_FK] ON [S_CEE].[T_J_TRAVAILLE_TRV] ([PJR_DATE] ASC) WITH (DROP_EXISTING = ON)  ON FG_DATA;
+CREATE  UNIQUE  CLUSTERED  INDEX [PK_T_LIGNE_ADRESSE_LAD] ON [S_PRS].[T_LIGNE_ADRESSE_LAD] ([LAD_ID] ASC) WITH (DROP_EXISTING = ON)  ON FG_DATA;
+CREATE  INDEX [COMPOSEE_FK] ON [S_PRS].[T_LIGNE_ADRESSE_LAD] ([ADR_ID] ASC) WITH (DROP_EXISTING = ON)  ON FG_DATA;
+CREATE  UNIQUE  CLUSTERED  INDEX [PK_T_MANDATAIRE_MDT] ON [S_CEE].[T_MANDATAIRE_MDT] ([MDT_ID] ASC) WITH (DROP_EXISTING = ON)  ON FG_DATA;
+CREATE  INDEX [EST_MANDATEE_FK] ON [S_CEE].[T_MANDATAIRE_MDT] ([T_P_PRS_ID] ASC) WITH (DROP_EXISTING = ON)  ON FG_DATA;
+CREATE  INDEX [REPRESENTEE_FK] ON [S_CEE].[T_MANDATAIRE_MDT] ([PRS_ID_MORALE] ASC) WITH (DROP_EXISTING = ON)  ON FG_DATA;
+CREATE  INDEX [ASSOCIATION_20_FK] ON [S_CEE].[T_MANDATAIRE_MDT] ([MDA_ID] ASC) WITH (DROP_EXISTING = ON)  ON FG_DATA;
+CREATE  UNIQUE  CLUSTERED  INDEX [PK_T_OCCUPATION_OCP] ON [S_CHB].[T_OCCUPATION_OCP] ([CHB_ID] ASC, [PJR_DATE] ASC) WITH (DROP_EXISTING = ON)  ON FG_DATA;
+CREATE  INDEX [OCCUPEE_FK] ON [S_CHB].[T_OCCUPATION_OCP] ([PJR_DATE] ASC) WITH (DROP_EXISTING = ON)  ON FG_DATA;
+CREATE  INDEX [PAR_FK] ON [S_CHB].[T_OCCUPATION_OCP] ([PRS_ID] ASC) WITH (DROP_EXISTING = ON)  ON FG_DATA;
+CREATE  UNIQUE  CLUSTERED  INDEX [PK_T_PERSONNE_MORALE_PSM] ON [S_PRS].[T_PERSONNE_MORALE_PSM] ([PRS_ID] ASC) WITH (DROP_EXISTING = ON)  ON FG_DATA;
+CREATE  INDEX [DOTEE_FK] ON [S_PRS].[T_PERSONNE_MORALE_PSM] ([FMO_ID] ASC) WITH (DROP_EXISTING = ON)  ON FG_DATA;
+CREATE  UNIQUE  CLUSTERED  INDEX [PK_T_PERSONNE_PHYSIQUE_PSP] ON [S_PRS].[T_PERSONNE_PHYSIQUE_PSP] ([PRS_ID] ASC) WITH (DROP_EXISTING = ON)  ON FG_DATA;
+CREATE  INDEX [TJ_ATRTIT_FK] ON [S_PRS].[T_PERSONNE_PHYSIQUE_PSP] ([TIT_ID] ASC) WITH (DROP_EXISTING = ON)  ON FG_DATA;
+CREATE  INDEX [TJ_ATRSEX_FK] ON [S_PRS].[T_PERSONNE_PHYSIQUE_PSP] ([SEX_ID] ASC) WITH (DROP_EXISTING = ON)  ON FG_DATA;
+CREATE  UNIQUE  CLUSTERED  INDEX [PK_T_PERSONNE_PRS] ON [S_PRS].[T_PERSONNE_PRS] ([PRS_ID] ASC) WITH (DROP_EXISTING = ON)  ON FG_DATA;
+CREATE  INDEX [ADR_DEFAUT_FK] ON [S_PRS].[T_PERSONNE_PRS] ([ADR_ID] ASC) WITH (DROP_EXISTING = ON)  ON FG_DATA;
+CREATE  INDEX [MAIL_DEFAUT2_FK] ON [S_PRS].[T_PERSONNE_PRS] ([EML_ID] ASC) WITH (DROP_EXISTING = ON)  ON FG_DATA;
+CREATE  INDEX [TEL_DEFAUT2_FK] ON [S_PRS].[T_PERSONNE_PRS] ([TEL_ID] ASC) WITH (DROP_EXISTING = ON)  ON FG_DATA;
+CREATE  UNIQUE  CLUSTERED  INDEX [PK_T_PLN_JOUR_PJR] ON [S_CLD].[T_PLN_JOUR_PJR] ([PJR_DATE] ASC) WITH (DROP_EXISTING = ON)  ON FG_DATA;
+CREATE  INDEX [L_PJRPJM_FK1] ON [S_CLD].[T_PLN_JOUR_PJR] ([PJM_ID] ASC) WITH (DROP_EXISTING = ON)  ON FG_DATA;
+CREATE  INDEX [L_PJRPMS_FK1] ON [S_CLD].[T_PLN_JOUR_PJR] ([PMS_ID] ASC) WITH (DROP_EXISTING = ON)  ON FG_DATA;
+CREATE  INDEX [L_PJRPAN_FK1] ON [S_CLD].[T_PLN_JOUR_PJR] ([PAN_ID] ASC) WITH (DROP_EXISTING = ON)  ON FG_DATA;
+CREATE  INDEX [TJ_PJRPSM_DEBUTE_FK1] ON [S_CLD].[T_PLN_JOUR_PJR] ([PSM_ID] ASC) WITH (DROP_EXISTING = ON)  ON FG_DATA;
+CREATE  INDEX [L_PJRPJS_FK1] ON [S_CLD].[T_PLN_JOUR_PJR] ([PJS_ID] ASC) WITH (DROP_EXISTING = ON)  ON FG_DATA;
+CREATE  INDEX [TJ_PJRPJA_FK1] ON [S_CLD].[T_PLN_JOUR_PJR] ([PJA_ID] ASC) WITH (DROP_EXISTING = ON)  ON FG_DATA;
+CREATE  INDEX [L_PJRPTR_FK1] ON [S_CLD].[T_PLN_JOUR_PJR] ([PTR_ID] ASC) WITH (DROP_EXISTING = ON)  ON FG_DATA;
+CREATE  INDEX [L_PJRPST_FK1] ON [S_CLD].[T_PLN_JOUR_PJR] ([PST_ID] ASC) WITH (DROP_EXISTING = ON)  ON FG_DATA;
+CREATE  UNIQUE  CLUSTERED  INDEX [PK_T_RESERVATION_RSV] ON [S_CHB].[T_RESERVATION_RSV] ([RSV_ID] ASC) WITH (DROP_EXISTING = ON)  ON FG_DATA;
+CREATE  INDEX [DEMANDE_FK] ON [S_CHB].[T_RESERVATION_RSV] ([PRS_ID] ASC) WITH (DROP_EXISTING = ON)  ON FG_DATA;
+CREATE  INDEX [SEJOUR_DEBUTE_FK] ON [S_CHB].[T_RESERVATION_RSV] ([PJR_DATE_DEBUTE] ASC) WITH (DROP_EXISTING = ON)  ON FG_DATA;
+CREATE  INDEX [SEJOUR_TERMINE_FK] ON [S_CHB].[T_RESERVATION_RSV] ([PJR_DATE_FINIE] ASC) WITH (DROP_EXISTING = ON)  ON FG_DATA;
+CREATE  UNIQUE  CLUSTERED  INDEX [PK_T_R_FONCTION_FCT] ON [S_CEE].[T_R_FONCTION_FCT] ([FCT_ID] ASC) WITH (DROP_EXISTING = ON)  ON FG_DATA;
+CREATE  UNIQUE  INDEX [UK_FCT_CODE] ON [S_CEE].[T_R_FONCTION_FCT] ([FCT_CODE] ASC) WITH (DROP_EXISTING = ON)  ON FG_DATA;
+CREATE  UNIQUE  CLUSTERED  INDEX [PK_T_R_FORME_ORGANISATION_FMO] ON [S_PRS].[T_R_FORME_ORGANISATION_FMO] ([FMO_ID] ASC) WITH (DROP_EXISTING = ON)  ON FG_DATA;
+CREATE  UNIQUE  INDEX [UK_FMO_CODE] ON [S_PRS].[T_R_FORME_ORGANISATION_FMO] ([FMO_CODE] ASC) WITH (DROP_EXISTING = ON)  ON FG_DATA;
+CREATE  UNIQUE  INDEX [UQ__DUAL__395884C4] ON [dbo].[DUAL] ([C] ASC) WITH (DROP_EXISTING = ON)  ON FG_DATA;
+CREATE  UNIQUE  CLUSTERED  INDEX [PK_T_R_MANDAT_MDA] ON [S_CEE].[T_R_MANDAT_MDA] ([MDA_ID] ASC) WITH (DROP_EXISTING = ON)  ON FG_DATA;
+CREATE  UNIQUE  INDEX [UK_MDA_CODE] ON [S_CEE].[T_R_MANDAT_MDA] ([MDA_CODE] ASC) WITH (DROP_EXISTING = ON)  ON FG_DATA;
+CREATE  UNIQUE  CLUSTERED  INDEX [PK_T_R_MODE_PAIEMENT_PMT] ON [S_CHB].[T_R_MODE_PAIEMENT_PMT] ([PMT_ID] ASC) WITH (DROP_EXISTING = ON)  ON FG_DATA;
+CREATE  UNIQUE  INDEX [UK_PMT_CODE] ON [S_CHB].[T_R_MODE_PAIEMENT_PMT] ([PMT_CODE] ASC) WITH (DROP_EXISTING = ON)  ON FG_DATA;
+CREATE  UNIQUE  CLUSTERED  INDEX [PK_T_R_PAYS_PAY] ON [S_PRS].[T_R_PAYS_PAY] ([PAY_ID] ASC) WITH (DROP_EXISTING = ON)  ON FG_DATA;
+CREATE  UNIQUE  INDEX [UK_PAY_CODE] ON [S_PRS].[T_R_PAYS_PAY] ([PAY_CODE] ASC) WITH (DROP_EXISTING = ON)  ON FG_DATA;
+CREATE  UNIQUE  CLUSTERED  INDEX [PK_T_R_PLN_ANNEE_PAN] ON [S_CLD].[T_R_PLN_ANNEE_PAN] ([PAN_ID] ASC) WITH (DROP_EXISTING = ON)  ON FG_DATA;
+CREATE  UNIQUE  CLUSTERED  INDEX [PK_T_R_PLN_JOUR_ANNEE_PJA] ON [S_CLD].[T_R_PLN_JOUR_ANNEE_PJA] ([PJA_ID] ASC) WITH (DROP_EXISTING = ON)  ON FG_DATA;
+CREATE  UNIQUE  CLUSTERED  INDEX [PK_T_R_PLN_JOUR_FERIE_FIXE_PJF] ON [S_CLD].[T_R_PLN_JOUR_FERIE_FIXE_PJF] ([PJM_ID] ASC, [PMS_ID] ASC) WITH (DROP_EXISTING = ON)  ON FG_DATA;
+CREATE  INDEX [L_PJFPMS_FK] ON [S_CLD].[T_R_PLN_JOUR_FERIE_FIXE_PJF] ([PMS_ID] ASC) WITH (DROP_EXISTING = ON)  ON FG_DATA;
+CREATE  UNIQUE  CLUSTERED  INDEX [PK_T_R_PLN_JOUR_FERIE_MOBILE_P] ON [S_CLD].[T_R_PLN_JOUR_FERIE_MOBILE_PFM] ([PFM_ID] ASC) WITH (DROP_EXISTING = ON)  ON FG_DATA;
+CREATE  UNIQUE  CLUSTERED  INDEX [PK_T_R_PLN_JOUR_MOIS_PJM] ON [S_CLD].[T_R_PLN_JOUR_MOIS_PJM] ([PJM_ID] ASC) WITH (DROP_EXISTING = ON)  ON FG_DATA;
+CREATE  UNIQUE  CLUSTERED  INDEX [PK_T_R_PLN_JOUR_SEMAINE_PJS] ON [S_CLD].[T_R_PLN_JOUR_SEMAINE_PJS] ([PJS_ID] ASC) WITH (DROP_EXISTING = ON)  ON FG_DATA;
+CREATE  UNIQUE  CLUSTERED  INDEX [PK_T_R_PLN_MOIS_PMS] ON [S_CLD].[T_R_PLN_MOIS_PMS] ([PMS_ID] ASC) WITH (DROP_EXISTING = ON)  ON FG_DATA;
+CREATE  UNIQUE  CLUSTERED  INDEX [PK_T_R_PLN_SEMAINE_PSM] ON [S_CLD].[T_R_PLN_SEMAINE_PSM] ([PSM_ID] ASC) WITH (DROP_EXISTING = ON)  ON FG_DATA;
+CREATE  UNIQUE  CLUSTERED  INDEX [PK_T_R_PLN_SEMESTRE_PST] ON [S_CLD].[T_R_PLN_SEMESTRE_PST] ([PST_ID] ASC) WITH (DROP_EXISTING = ON)  ON FG_DATA;
+CREATE  UNIQUE  CLUSTERED  INDEX [PK_T_R_PLN_TRIMESTRE_PTR] ON [S_CLD].[T_R_PLN_TRIMESTRE_PTR] ([PTR_ID] ASC) WITH (DROP_EXISTING = ON)  ON FG_DATA;
+CREATE  UNIQUE  CLUSTERED  INDEX [PK_T_R_SERVICE_SCV] ON [S_CEE].[T_R_SERVICE_SCV] ([SVC_ID] ASC) WITH (DROP_EXISTING = ON)  ON FG_DATA;
+CREATE  UNIQUE  CLUSTERED  INDEX [PK_T_R_SEXE_SEX] ON [S_PRS].[T_R_SEXE_SEX] ([SEX_ID] ASC) WITH (DROP_EXISTING = ON)  ON FG_DATA;
+CREATE  UNIQUE  INDEX [UK_SEX_CODE] ON [S_PRS].[T_R_SEXE_SEX] ([SEX_CODE] ASC) WITH (DROP_EXISTING = ON)  ON FG_DATA;
+CREATE  UNIQUE  CLUSTERED  INDEX [PK_T_R_SITUATION_STT] ON [S_PRS].[T_R_SITUATION_STT] ([STT_ID] ASC) WITH (DROP_EXISTING = ON)  ON FG_DATA;
+CREATE  UNIQUE  INDEX [UK_STT_CODE] ON [S_PRS].[T_R_SITUATION_STT] ([STT_CODE] ASC) WITH (DROP_EXISTING = ON)  ON FG_DATA;
+CREATE  UNIQUE  CLUSTERED  INDEX [PK_T_R_TITRE_TIT] ON [S_PRS].[T_R_TITRE_TIT] ([TIT_ID] ASC) WITH (DROP_EXISTING = ON)  ON FG_DATA;
+CREATE  UNIQUE  INDEX [UK_TIT_CODE] ON [S_PRS].[T_R_TITRE_TIT] ([TIT_CODE] ASC) WITH (DROP_EXISTING = ON)  ON FG_DATA;
+CREATE  UNIQUE  CLUSTERED  INDEX [PK_T_R_TYPE_TELEPHONE_TTL] ON [S_PRS].[T_R_TYPE_TELEPHONE_TTL] ([TTL_ID] ASC) WITH (DROP_EXISTING = ON)  ON FG_DATA;
+CREATE  UNIQUE  INDEX [UK_TTL_CODE] ON [S_PRS].[T_R_TYPE_TELEPHONE_TTL] ([TTL_CODE] ASC) WITH (DROP_EXISTING = ON)  ON FG_DATA;
+CREATE  UNIQUE  CLUSTERED  INDEX [PK_T_TELEPHONE_TEL] ON [S_PRS].[T_TELEPHONE_TEL] ([TEL_ID] ASC) WITH (DROP_EXISTING = ON)  ON FG_DATA;
+CREATE  INDEX [TJ_TELSTT_FK] ON [S_PRS].[T_TELEPHONE_TEL] ([STT_ID] ASC) WITH (DROP_EXISTING = ON)  ON FG_DATA;
+CREATE  INDEX [TJ_TELTTL_FK] ON [S_PRS].[T_TELEPHONE_TEL] ([TTL_ID] ASC) WITH (DROP_EXISTING = ON)  ON FG_DATA;
+CREATE  INDEX [TEL_DEFAUT_FK] ON [S_PRS].[T_TELEPHONE_TEL] ([PRS_ID] ASC) WITH (DROP_EXISTING = ON)  ON FG_DATA;
+CREATE  UNIQUE  CLUSTERED  INDEX [PK_T_TVA] ON [S_CHB].[T_TVA] ([TVA_ID] ASC) WITH (DROP_EXISTING = ON)  ON FG_DATA;
+GO
+
+ALTER TABLE [dbo].[DUAL] ADD _ INT IDENTITY NOT NULL CONSTRAINT UKsupertoto UNIQUE CLUSTERED ON FG_DATA;ALTER TABLE [dbo].[DUAL] DROP CONSTRAINT UKsupertoto;ALTER TABLE [dbo].[DUAL] DROP COLUMN _;
+GO
+
+-- redimensionnement des fichiers journal et mdf
+USE [DB_GRAND_HOTEL]
+GO
+DBCC SHRINKFILE (N'DB_GRAND_HOTEL' , 10)
+GO
+USE [master]
+GO
+ALTER DATABASE [DB_GRAND_HOTEL] 
+   MODIFY FILE ( NAME = N'DB_GRAND_HOTEL_log', 
+                 SIZE = 102400KB )
+GO
+
+-- retaillage du pas d'incrément des fichiers journal et mdf
+USE [master]
+GO
+ALTER DATABASE [DB_GRAND_HOTEL] 
+   MODIFY FILE ( NAME = N'DB_GRAND_HOTEL', 
+                 FILEGROWTH = 10240KB )
+GO
+ALTER DATABASE [DB_GRAND_HOTEL] 
+   MODIFY FILE ( NAME = N'DB_GRAND_HOTEL_log', 
+                 FILEGROWTH = 65536KB )
+GO
--- a/ORSYS/Stagiaires.txt
+++ b/ORSYS/Stagiaires.txt
@ -0,0 +1,7 @@
+M. MASSICARD Benoît : 60 ans DBA 30 ans, DB2 Linux/Zos, Oracle, Sybase IQ (groupe CORA)
+M. FAUCON Dominique : 56 ans Inge Systeme. AN ingé système/ réseau. (Assemblée nationale)
+M. LAGRENE Anthony  : 28 ans, Oracle 70%, progiciel SQL Server (Lidl)
+M. DUCAMPS Vincent  : Inge systeme, désireux d'investir dans le DBA (consort NT)
+M. AUTRAN Jean Marc : (NEONITY) hébergement données expert comptable et PME
+
+
--- a/ORSYS/Trace.sql
+++ b/ORSYS/Trace.sql
--- a/IT/SQL/SCRIPTS
+++ b/IT/SQL/SCRIPTS
@ -0,0 +1,10 @@
+-- transaction la plus ancienne dans la base contextuelle
+DBCC OPENTRAN WITH TABLERESULTS
+
+-- transaction de plus de n secondes (ici 30) par bases
+SELECT DB_NAME(database_id), DATEDIFF(second, transaction_begin_time, GETDATE()) AS DURATION_SECOND, *
+FROM   sys.dm_tran_active_transactions AS tat
+       JOIN sys.dm_tran_database_transactions AS tdb 
+          ON tat.transaction_id = tdb.transaction_id
+WHERE  database_id > 4
+  AND  DATEDIFF(second, transaction_begin_time, GETDATE()) > 30;
--- a/IT/SQL/SCRIPTS
+++ b/IT/SQL/SCRIPTS
@ -0,0 +1,17 @@
+-- voir le contenu du JT de la base contextuelle
+SELECT * 
+FROM   sys.fn_dblog(NULL, NULL)
+
+-- voir les VLF du JT de la base contextuelle
+DBCC LOGINFO
+SELECT * FROM sys.dm_db_log_info(NULL) --> pour une autre base mettre le database_id
+
+-- retailler un JT qui a trop de VLF :
+1) passer en mode de journalisation SIMPLE (ALTER DATABASE .... SET RECOVERY SIMPLE)
+2) réducation au minimum de la taille du fichier journal DBCC SHRINKFILE(fichier_jt, 1);
+3) donner une taille adéquate au fichier du JT ALTER DATABASE .... MODIFIY FILE (NAME = ...., SIZE = ...);
+
+
+
+
+
--- a/ORSYS/divergence
+++ b/ORSYS/divergence
@ -0,0 +1,11 @@
+-- connaitre les bases ayant une collation différente de celle du serveur
+SELECT name, collation_name, SERVERPROPERTY('Collation') AS Server_collation
+FROM   sys.databases
+WHERE  collation_name <> SERVERPROPERTY('Collation')
+
+-- bases ayant un AUTO close ou AUTO shrink
+SELECT name, N'ALTER DATABASE [' + name + '] SET AUTO_CLOSE OFF;ALTER DATABASE [' + name + '] SET AUTO_SHRINK OFF;'
+FROM   sys.databases
+WHERE  database_id > 4
+  AND  (is_auto_shrink_on = 1
+        OR  is_auto_close_on = 1);
--- a/SINGLE_USER.sql
+++ b/SINGLE_USER.sql
@ -0,0 +1,14 @@
+-- on se met dans le contexte de la base DB_TEST
+USE DB_TEST;
+GO
+-- on devient l'unique utilisateur de la base
+ALTER DATABASE DB_TEST SET SINGLE_USER WITH ROLLBACK IMMEDIATE;
+GO
+-- on passe dans la base master, la base DB_TEST n'a plus aucun utilisateur
+use [master];
+GO
+ALTER DATABASE [DB_TEST] SET ... -- commande à passer sans aucun utilisateur
+GO
+-- one repasse la base de données en mode muti utilisateur
+ALTER DATABASE [DB_TEST] SET MULTI_USER
+GO
--- a/IT/SQL/add_partition.sql
+++ b/IT/SQL/add_partition.sql
@ -0,0 +1,24 @@
+-- ajouter partition
+
+use [DB_GRAND_HOTEL]
+
+ALTER DATABASE DB_GRAND_HOTEL ADD FILEGROUP FG_PART_2009;
+ALTER DATABASE DB_GRAND_HOTEL 
+   ADD FILE (NAME = 'F_PART_2009',
+             FILENAME = 'C:\Program Files\Microsoft SQL Server\MSSQL15.SQL2019FBIN2\MSSQL\DATA\FG_2009.ndf',
+             SIZE     = 25 MB,
+             FILEGROWTH = 10 MB)
+       TO FILEGROUP FG_PART_2009;
+GO
+
+--2) modifier le schema de partitionnement
+ALTER PARTITION SCHEME PS_DATE_FACTURE
+	NEXT USED FG_PART_2009;
+GO
+
+-- 3) ajouter le piquet de partitionnement
+
+ALTER PARTITION FUNCTION PF_Date_facture()
+	SPLIT RANGE ('2019-01-01')
+
+GO
--- a/IT/SQL/cheasheet.md
+++ b/IT/SQL/cheasheet.md
@ -0,0 +1,195 @@
+# Quick SQL Cheatsheet
+
+A quick reminder of all relevant SQL queries and examples on how to use them. 
+
+This repository is constantly being updated and added to by the community. 
+Pull requests are welcome. Enjoy!
+
+# Table of Contents 
+1. [ Finding Data Queries. ](#find)
+2. [ Data Modification Queries. ](#modify)
+3. [ Reporting Queries. ](#report)
+4. [ Join Queries. ](#joins)
+5. [ View Queries. ](#view)
+6. [ Altering Table Queries.](#alter)
+7. [ Creating Table Query.](#create)
+
+<a name="find"></a>
+# 1. Finding Data Queries
+
+### **SELECT**: used to select data from a database
+* `SELECT` * `FROM` table_name;
+
+### **DISTINCT**: filters away duplicate values and returns rows of specified column
+* `SELECT DISTINCT` column_name;
+
+### **WHERE**: used to filter records/rows
+* `SELECT` column1, column2 `FROM` table_name `WHERE` condition;
+* `SELECT` * `FROM` table_name `WHERE` condition1 `AND` condition2;
+* `SELECT` * `FROM` table_name `WHERE` condition1 `OR` condition2;
+* `SELECT` * `FROM` table_name `WHERE NOT` condition;
+* `SELECT` * `FROM` table_name `WHERE` condition1 `AND` (condition2 `OR` condition3);
+* `SELECT` * `FROM` table_name `WHERE EXISTS` (`SELECT` column_name `FROM` table_name `WHERE` condition);
+
+### **ORDER BY**: used to sort the result-set in ascending or descending order
+* `SELECT` * `FROM` table_name `ORDER BY` column;
+* `SELECT` * `FROM` table_name `ORDER BY` column `DESC`;
+* `SELECT` * `FROM` table_name `ORDER BY` column1 `ASC`, column2 `DESC`;
+
+### **SELECT TOP**: used to specify the number of records to return from top of table
+* `SELECT TOP` number columns_names `FROM` table_name `WHERE` condition;
+* `SELECT TOP` percent columns_names `FROM` table_name `WHERE` condition;
+* Not all database systems support `SELECT TOP`. The MySQL equivalent is the `LIMIT` clause
+* `SELECT` column_names `FROM` table_name `LIMIT` offset, count;
+
+### **LIKE**: operator used in a WHERE clause to search for a specific pattern in a column
+* % (percent sign) is a wildcard character that represents zero, one, or multiple characters
+* _ (underscore) is a wildcard character that represents a single character
+* `SELECT` column_names `FROM` table_name `WHERE` column_name `LIKE` pattern;
+* `LIKE` ‘a%’ (find any values that start with “a”)
+* `LIKE` ‘%a’ (find any values that end with “a”)
+* `LIKE` ‘%or%’ (find any values that have “or” in any position)
+* `LIKE` ‘_r%’ (find any values that have “r” in the second position)
+* `LIKE` ‘a_%_%’ (find any values that start with “a” and are at least 3 characters in length)
+* `LIKE` ‘[a-c]%’ (find any values starting with “a”, “b”, or “c”
+
+### **IN**: operator that allows you to specify multiple values in a WHERE clause
+* essentially the IN operator is shorthand for multiple OR conditions
+* `SELECT` column_names `FROM` table_name `WHERE` column_name `IN` (value1, value2, …);
+* `SELECT` column_names `FROM` table_name `WHERE` column_name `IN` (`SELECT STATEMENT`);
+
+### **BETWEEN**: operator selects values within a given range inclusive
+* `SELECT` column_names `FROM` table_name `WHERE` column_name `BETWEEN` value1 `AND` value2;
+* `SELECT` * `FROM` Products `WHERE` (column_name `BETWEEN` value1 `AND` value2) `AND NOT` column_name2 `IN` (value3, value4);
+* `SELECT` * `FROM` Products `WHERE` column_name `BETWEEN` #01/07/1999# AND #03/12/1999#;
+
+### **NULL**: values in a field with no value
+* `SELECT` * `FROM` table_name `WHERE` column_name `IS NULL`;
+* `SELECT` * `FROM` table_name `WHERE` column_name `IS NOT NULL`;
+
+### **AS**: aliases are used to assign a temporary name to a table or column
+* `SELECT` column_name `AS` alias_name `FROM` table_name;
+* `SELECT` column_name `FROM` table_name `AS` alias_name;
+* `SELECT` column_name `AS` alias_name1, column_name2 `AS` alias_name2;
+* `SELECT` column_name1, column_name2 + ‘, ‘ + column_name3 `AS` alias_name;
+
+### **UNION**: set operator used to combine the result-set of two or more SELECT statements
+* Each SELECT statement within UNION must have the same number of columns
+* The columns must have similar data types
+* The columns in each SELECT statement must also be in the same order
+* `SELECT` columns_names `FROM` table1 `UNION SELECT` column_name `FROM` table2;
+* `UNION` operator only selects distinct values, `UNION ALL` will allow duplicates
+
+### **INTERSECT**: set operator which is used to return the records that two SELECT statements have in common
+* Generally used the same way as **UNION** above
+* `SELECT` columns_names `FROM` table1 `INTERSECT SELECT` column_name `FROM` table2;
+
+### **EXCEPT**: set operator used to return all the records in the first SELECT statement that are not found in the second SELECT statement
+* Generally used the same way as **UNION** above
+* `SELECT` columns_names `FROM` table1 `EXCEPT SELECT` column_name `FROM` table2;
+
+### **ANY|ALL**: operator used to check subquery conditions used within a WHERE or HAVING clauses
+* The `ANY` operator returns true if any subquery values meet the condition
+* The `ALL` operator returns true if all subquery values meet the condition
+* `SELECT` columns_names `FROM` table1 `WHERE` column_name operator (`ANY`|`ALL`) (`SELECT` column_name `FROM` table_name `WHERE` condition);
+
+### **GROUP BY**: statement often used with aggregate functions (COUNT, MAX, MIN, SUM, AVG) to group the result-set by one or more columns
+* `SELECT` column_name1, COUNT(column_name2) `FROM` table_name `WHERE` condition `GROUP BY` column_name1 `ORDER BY` COUNT(column_name2) DESC;
+
+### **HAVING**: this clause was added to SQL because the WHERE keyword could not be used with aggregate functions
+* `SELECT` `COUNT`(column_name1), column_name2 `FROM` table `GROUP BY` column_name2 `HAVING` `COUNT(`column_name1`)` > 5;
+
+### **WITH**: often used for retrieving hierarchical data or re-using temp result set several times in a query. Also referred to as "Common Table Expression"
+* `WITH RECURSIVE` cte `AS` (<br/>
+    &nbsp;&nbsp;`SELECT` c0.* `FROM` categories `AS` c0 `WHERE` id = 1 `# Starting point`<br/>
+    &nbsp;&nbsp;`UNION ALL`<br/>
+    &nbsp;&nbsp;`SELECT` c1.* `FROM` categories `AS` c1 `JOIN` cte `ON` c1.parent_category_id = cte.id<br/>
+  )<br/>
+  `SELECT` *<br/>
+  `FROM` cte
+
+
+<a name="modify"></a>
+# 2. Data Modification Queries
+
+### **INSERT INTO**: used to insert new records/rows in a table
+* `INSERT INTO` table_name (column1, column2) `VALUES` (value1, value2);
+* `INSERT INTO` table_name `VALUES` (value1, value2 …);
+
+### **UPDATE**: used to modify the existing records in a table
+* `UPDATE` table_name `SET` column1 = value1, column2 = value2 `WHERE` condition;
+* `UPDATE` table_name `SET` column_name = value;
+
+### **DELETE**: used to delete existing records/rows in a table
+* `DELETE FROM` table_name `WHERE` condition;
+* `DELETE` * `FROM` table_name;
+
+<a name="report"></a>
+# 3. Reporting Queries
+
+### **COUNT**: returns the # of occurrences
+* `SELECT COUNT (DISTINCT` column_name`)`;
+
+### **MIN() and MAX()**: returns the smallest/largest value of the selected column
+* `SELECT MIN (`column_names`) FROM` table_name `WHERE` condition;
+* `SELECT MAX (`column_names`) FROM` table_name `WHERE` condition;
+
+### **AVG()**: returns the average value of a numeric column
+* `SELECT AVG (`column_name`) FROM` table_name `WHERE` condition;
+
+### **SUM()**: returns the total sum of a numeric column
+* `SELECT SUM (`column_name`) FROM` table_name `WHERE` condition;
+
+<a name="joins"></a>
+# 4. Join Queries
+
+###  **INNER JOIN**: returns records that have matching value in both tables
+* `SELECT` column_names `FROM` table1 `INNER JOIN` table2 `ON` table1.column_name=table2.column_name;
+* `SELECT` table1.column_name1, table2.column_name2, table3.column_name3 `FROM` ((table1 `INNER JOIN` table2 `ON` relationship) `INNER JOIN` table3 `ON` relationship);
+
+### **LEFT (OUTER) JOIN**: returns all records from the left table (table1), and the matched records from the right table (table2)
+* `SELECT` column_names `FROM` table1 `LEFT JOIN` table2 `ON` table1.column_name=table2.column_name;
+
+### **RIGHT (OUTER) JOIN**: returns all records from the right table (table2), and the matched records from the left table (table1)
+* `SELECT` column_names `FROM` table1 `RIGHT JOIN` table2 `ON` table1.column_name=table2.column_name;
+
+### **FULL (OUTER) JOIN**: returns all records when there is a match in either left or right table
+* `SELECT` column_names `FROM` table1 ``FULL OUTER JOIN`` table2 `ON` table1.column_name=table2.column_name;
+
+### **Self JOIN**: a regular join, but the table is joined with itself
+* `SELECT` column_names `FROM` table1 T1, table1 T2 `WHERE` condition;
+
+<a name="view"></a>
+# 5. View Queries
+
+### **CREATE**: create a view
+* `CREATE VIEW` view_name `AS SELECT` column1, column2 `FROM` table_name `WHERE` condition;
+
+### **SELECT**: retrieve a view
+* `SELECT` * `FROM` view_name;
+
+### **DROP**: drop a view
+* `DROP VIEW` view_name;
+
+<a name="alter"></a>
+# 6. Altering Table Queries
+
+### **ADD**: add a column
+* `ALTER TABLE` table_name `ADD` column_name column_definition;
+
+### **MODIFY**: change data type of column
+* `ALTER TABLE` table_name `MODIFY` column_name column_type;
+
+### **DROP**: delete a column
+* `ALTER TABLE` table_name `DROP COLUMN` column_name;
+
+<a name="create"></a>
+# 7. Creating Table Query
+
+### **CREATE**: create a table
+* `CREATE TABLE` table_name `(` <br />
+   `column1` `datatype`, <br />
+   `column2` `datatype`, <br />
+   `column3` `datatype`, <br />
+   `column4` `datatype`, <br />
+   `);`
--- a/IT/SQL/commande.md
+++ b/IT/SQL/commande.md
@ -0,0 +1,83 @@
+# commande SQL formation
+
+voir version:
+
+`select @@version`
+
+passer une base en mode single user
+` ALTER DATABASE [toto] SET SINGLE_USER WITH ROLLBACK IMMEDIATE`
+
+passer en mode multi user
+
+`alter database [toto] set MULTI_USER`
+
+
+voir la configuration
+`exec sp_configure`
+
+activé affichage des option avancé
+```SQL
+exec sp_configure 'show advanced options', 1;
+REconfigure;
+```
+
+autorisé la mise en autonomie partielle des bases
+```SQL
+exec sp_configure 'contained database authentication',1;
+reconfigure
+```
+
+```SQL
+exec sp_configure 'cost threshold for parallelism',12
+exec sp_configure 'max degree of parallelism',2
+exec sp_configure 'max server memory (MB)', 4096
+exec sp_configure'optimize for ad hoc workloads',1
+exec sp_configure'backup compression default',1
+exec sp_configure'backup checksum default',1
+exec sp_configure
+reconfigure
+```
+
+Backup
+```sql
+BACKUP DATABASE [toto] TO DISK = 'c:\toto.bak' with Compression
+```
+
+ajouter filegroup
+```SQL
+USE [master]
+GO
+ALTER DATABASE [DB_GRAND_HOTEL] ADD FILEGROUP [FG_DATA]
+GO
+ALTER DATABASE [DB_GRAND_HOTEL] ADD FILE ( NAME = N'FG_DATA_1', FILENAME = N'C:\Program Files\Microsoft SQL Server\MSSQL15.SQL2019FBIN2\MSSQL\DATA\FD_DATA_1.mdf' , SIZE = 102400KB , FILEGROWTH = 65536KB ) TO FILEGROUP [FG_DATA]
+GO
+ALTER DATABASE [DB_GRAND_HOTEL] ADD FILE ( NAME = N'FG_DATA_2', FILENAME = N'C:\Program Files\Microsoft SQL Server\MSSQL15.SQL2019FBIN2\MSSQL\DATA\FD_DATA_2.mdf' , SIZE = 102400KB , FILEGROWTH = 65536KB ) TO FILEGROUP [FG_DATA]
+GO
+```
+
+setter filegroup par default
+```SQL
+USE [DB_GRAND_HOTEL]
+GO
+IF NOT EXISTS (SELECT name FROM sys.filegroups WHERE is_default=1 AND name = N'FG_DATA') ALTER DATABASE [DB_GRAND_HOTEL] MODIFY FILEGROUP [FG_DATA] DEFAULT
+GO
+```
+
+modifier taille de fichier 
+```SQL
+USE [DB_GRAND_HOTEL]
+GO
+DBCC SHRINKFILE (N'DB_GRAND_HOTEL' , 10)
+GO
+USE [master]
+GO
+ALTER DATABASE [DB_GRAND_HOTEL] MODIFY FILE ( NAME = N'DB_GRAND_HOTEL_log', SIZE = 102400KB )
+GO
+```
+
+voir nombre de page utilisé et temps
+
+```SQL
+SET STATISTCS IO ON
+SET STATISTCS TIME ON
+```
--- a/IT/SQL/create_partition.SQL
+++ b/IT/SQL/create_partition.SQL
@ -0,0 +1,79 @@
+USE DB_GRAND_HOTEL;
+GO
+
+ 
+
+-- création des espaces de stockage
+ALTER DATABASE DB_GRAND_HOTEL ADD FILEGROUP FG_PART_OLD;
+ALTER DATABASE DB_GRAND_HOTEL 
+   ADD FILE (NAME = 'F_PART_OLD',
+             FILENAME = 'C:\Program Files\Microsoft SQL Server\MSSQL15.SQL2019FBIN2\MSSQL\DATA\HOTEL_PART_OLD.ndf',
+             SIZE     = 25 MB,
+             FILEGROWTH = 10 MB)
+       TO FILEGROUP FG_PART_OLD;
+GO
+ALTER DATABASE DB_GRAND_HOTEL ADD FILEGROUP FG_PART_2006;
+ALTER DATABASE DB_GRAND_HOTEL 
+   ADD FILE (NAME = 'F_PART_2006',
+             FILENAME = 'C:\Program Files\Microsoft SQL Server\MSSQL15.SQL2019FBIN2\MSSQL\DATA\HOTEL_PART_2006.ndf',
+             SIZE     = 25 MB,
+             FILEGROWTH = 10 MB)
+       TO FILEGROUP FG_PART_2006;
+GO
+ALTER DATABASE DB_GRAND_HOTEL ADD FILEGROUP FG_PART_2007;
+ALTER DATABASE DB_GRAND_HOTEL 
+   ADD FILE (NAME = 'F_PART_2007',
+             FILENAME = 'C:\Program Files\Microsoft SQL Server\MSSQL15.SQL2019FBIN2\MSSQL\DATA\HOTEL_PART_2007.ndf',
+             SIZE     = 25 MB,
+             FILEGROWTH = 10 MB)
+       TO FILEGROUP FG_PART_2007;
+GO
+ALTER DATABASE DB_GRAND_HOTEL ADD FILEGROUP FG_PART_2008;
+ALTER DATABASE DB_GRAND_HOTEL 
+   ADD FILE (NAME = 'F_PART_2008',
+             FILENAME = 'C:\Program Files\Microsoft SQL Server\MSSQL15.SQL2019FBIN2\MSSQL\DATA\HOTEL_PART_2008.ndf',
+             SIZE     = 25 MB,
+             FILEGROWTH = 10 MB)
+       TO FILEGROUP FG_PART_2008;
+GO
+
+ 
+
+-- 1) création de la fonction de partitionnement
+CREATE PARTITION FUNCTION PF_DATE_FACTURE (DATETIME)
+AS RANGE RIGHT
+FOR VALUES ('2006-01-01', '2007-01-01', '2008-01-01');
+
+-- 2) création du schéma de répartition
+CREATE PARTITION SCHEME PS_DATE_FACTURE 
+AS PARTITION PF_DATE_FACTURE
+TO (FG_PART_OLD, FG_PART_2006, FG_PART_2007, FG_PART_2008);
+-- 3) création de l'objet sur la partition
+
+BEGIN TRANSACTION;
+BEGIN TRY
+   --> il faut commencer par retirer la contrainte FK de la table T_FACTURE_ITEM_ITM
+   ALTER TABLE [S_CHB].[T_FACTURE_ITEM_ITM] DROP CONSTRAINT [FK_T_FACTUR_CONTIENT_T_FACTUR];
+   --> il faut commencer par retirer la PK !!!
+   ALTER TABLE [S_CHB].[T_FACTURE_FAC] DROP CONSTRAINT [PK_T_FACTURE_FAC];
+   --> pas possible !
+   CREATE UNIQUE CLUSTERED INDEX X ON [S_CHB].[T_FACTURE_FAC] ([FAC_DATE], [FAC_ID])
+      ON PS_DATE_FACTURE(FAC_DATE);
+   --> remettre la PK (ATTENTION : par défaut la PK est créée sous forme d'index clustered)
+   ALTER TABLE [S_CHB].[T_FACTURE_FAC]
+      ADD CONSTRAINT [PK_T_FACTURE_FAC] PRIMARY KEY NONCLUSTERED ([FAC_ID])
+      ON FG_DATA;
+   --> remettre la FK
+   ALTER TABLE [S_CHB].[T_FACTURE_ITEM_ITM]
+      ADD CONSTRAINT [FK_T_FACTUR_CONTIENT_T_FACTUR]
+          FOREIGN KEY ([FAC_ID])
+          REFERENCES [S_CHB].[T_FACTURE_FAC] (FAC_ID);
+   COMMIT;
+-- tout se passe bien => COMMIT
+END TRY
+BEGIN CATCH
+-- quelque chose se passe mal => ROLLBACK
+   IF XACT_STATE() <> 0
+      ROLLBACK;
+   THROW;
+END CATCH
--- a/IT/SQL/show_partition.SQL
+++ b/IT/SQL/show_partition.SQL
@ -0,0 +1,48 @@
+SELECT s.name AS TABLE_SCHEMA, 
+       o.name AS TABLE_NAME, 
+       i.name AS INDEX_NAME, 
+       f.name AS PARTITION_FUNCTION, 
+       ps.name AS PARTITION_SCHEMA, 
+       p.partition_number AS PART_NUM, 
+       fg.name AS FILE_GROUP, 
+       rows AS ROW_COUNT, 
+       SUM(dbf.size) OVER(PARTITION BY fg.name) AS PAGE_COUNT, 
+       au.total_pages AS USED_PAGES,
+       CASE boundary_value_on_right
+           WHEN 1
+           THEN 'RIGHT'
+           ELSE 'LEFT'
+       END AS RANGE, 
+       rv1.value AS LOW_VALUE, 
+       rv2.value AS HIGH_VALUE
+FROM sys.partitions p
+     JOIN sys.indexes i
+     ON p.object_id = i.object_id
+        AND p.index_id = i.index_id
+     JOIN sys.objects AS o
+     ON i.object_id = o.object_id
+     JOIN sys.schemas AS s
+     ON o.schema_id = s.schema_id
+     JOIN sys.partition_schemes ps
+     ON ps.data_space_id = i.data_space_id
+     JOIN sys.partition_functions f
+     ON f.function_id = ps.function_id
+     JOIN sys.destination_data_spaces dds
+     ON dds.partition_scheme_id = ps.data_space_id
+        AND dds.destination_id = p.partition_number
+     JOIN sys.filegroups fg
+     ON dds.data_space_id = fg.data_space_id
+     JOIN sys.database_files AS dbf
+     ON dbf.data_space_id = fg.data_space_id
+     JOIN sys.allocation_units au
+     ON au.container_id = p.partition_id
+     LEFT OUTER JOIN sys.partition_range_values rv2
+     ON f.function_id = rv2.function_id
+        AND p.partition_number = rv2.boundary_id
+     LEFT OUTER JOIN sys.partition_range_values rv1
+     ON f.function_id = rv1.function_id
+        AND p.partition_number - 1 = rv1.boundary_id
+ORDER BY TABLE_SCHEMA, 
+         TABLE_NAME, 
+         INDEX_NAME, 
+         LOW_VALUE;
--- a/IT/Soft_util.md
+++ b/IT/Soft_util.md
@ -0,0 +1,5 @@
+# Soft util
+
+## tunelling
+
+[chisel](https://github.com/jpillora/chisel) permet de mettre e,n place un tunel TCP sur du http
--- a/IT/WebDesign/CSS.md
+++ b/IT/WebDesign/CSS.md
@ -0,0 +1,5 @@
+# CSS
+
+## link
+[Bulma style sheet](https://devhints.io/bulma)
+[Remove.bg](https://www.remove.bg/)
--- a/IT/WebDesign/building_palette.md
+++ b/IT/WebDesign/building_palette.md
@ -0,0 +1,151 @@
+# Refactoring UI: The Book
+
+> Learn how to design awesome UIs by yourself using specific tactics explained from a developer's point-of-view.
+
+Adapted from our book and video series, [Refactoring UI](moz-extension://3cbfa461-97cf-4e13-8308-7d355e1bc48c/book).
+
+Ever used one of those fancy color palette generators? You know, the ones where you pick a starting color, tweak some options that probably include some musical jargon like "triad" or "major fourth", and are then bestowed the five perfect color swatches you should use to build your website?
+
+![](https://refactoring-ui.nyc3.cdn.digitaloceanspaces.com/previews/whats-in-a-color-palette-01.png)
+
+This calculated and scientific approach to picking the perfect color scheme is extremely seductive, but not very useful.
+
+Well, unless you want your site to look like this:
+
+![](https://refactoring-ui.nyc3.cdn.digitaloceanspaces.com/previews/whats-in-a-color-palette-02.png)
+
+What you actually need
+----------------------
+
+You can't build anything with five hex codes. To build something real, you need a much more comprehensive set of colors to choose from.
+
+![](https://refactoring-ui.nyc3.cdn.digitaloceanspaces.com/previews/whats-in-a-color-palette-03.png)
+
+You can break a good color palette down into three categories.
+
+### Greys
+
+Text, backgrounds, panels, form controls — almost everything in an interface is grey.
+
+![](https://refactoring-ui.nyc3.cdn.digitaloceanspaces.com/previews/whats-in-a-color-palette-04.png)
+
+You'll need more greys than you think, too — three or four shades might sound like plenty but it won't be long before you wish you had something a little darker than shade #2 but a little lighter than shade #3.
+
+In practice, you want 8-10 shades to choose from (more on this later). Not so many that you waste time deciding between shade #77 and shade #78, but enough to make sure you don't have to compromise too much .
+
+![](https://refactoring-ui.nyc3.cdn.digitaloceanspaces.com/previews/whats-in-a-color-palette-05.png)
+
+True black tends to look pretty unnatural, so start with a really dark grey and work your way up to white in steady increments.
+
+### Primary color(s)
+
+Most sites need one, _maybe_ two colors that are used for primary actions, emphasizing navigation elements, etc. These are the colors that determine the overall look of a site — the ones that make you think of Facebook as "blue", even though it's really mostly grey.
+
+Just like with greys, you need a variety _(5-10)_ of lighter and darker shades to choose from.
+
+![](https://refactoring-ui.nyc3.cdn.digitaloceanspaces.com/previews/whats-in-a-color-palette-06.png)
+
+Ultra-light shades can be useful as a tinted background for things like alerts, while darker shades work great for text.
+
+### Accent colors
+
+On top of primary colors, every site needs a few _accent_ colors for communicating different things to the user.
+
+For example, you might want to use an eye-grabbing color like yellow, pink, or teal to highlight a new feature:
+
+![](https://refactoring-ui.nyc3.cdn.digitaloceanspaces.com/previews/whats-in-a-color-palette-07.png)
+
+You might also need colors to emphasize different semantic _states_, like red for confirming a destructive action:
+
+![](https://refactoring-ui.nyc3.cdn.digitaloceanspaces.com/previews/whats-in-a-color-palette-08.png)
+
+...yellow for a warning message:
+
+![](https://refactoring-ui.nyc3.cdn.digitaloceanspaces.com/previews/whats-in-a-color-palette-09.png)
+
+...or green to highlight a positive trend:
+
+![](https://refactoring-ui.nyc3.cdn.digitaloceanspaces.com/previews/whats-in-a-color-palette-10.png)
+
+You'll want multiple shades for these colors too, even though they should be used pretty sparingly throughout the UI.
+
+If you're building something where you need to use color to distinguish or categorize similar elements (like lines on graphs, events in a calendar, or tags on a project), you might need even more accent colors.
+
+All in, it's not uncommon to need as many as _ten_ different colors with _5-10 shades each_ for a complex UI.
+
+Define your shades up front
+---------------------------
+
+When you need to create a lighter or darker variation of a color in your palette, don't get clever using CSS preprocessor functions like "lighten" or "darken" to create shades on the fly. That's how you end up with 35 _slightly_ different blues that all look the same.
+
+Instead, define a fixed set of shades up front that you can choose from as you work.
+
+![](https://refactoring-ui.nyc3.cdn.digitaloceanspaces.com/previews/define-your-shades-up-front-01.png)
+
+So how do you put together a palette like this anyways?
+
+Choose the base color first
+---------------------------
+
+Start by picking a _base_ color for the scale you want to create — the color in the middle that your lighter and darker shades are based on.
+
+There's no real scientific way to do this, but for primary and accent colors, a good rule of thumb is to pick a shade that would work well as a button background.
+
+![](https://refactoring-ui.nyc3.cdn.digitaloceanspaces.com/previews/define-your-shades-up-front-02.png)
+
+It's important to note that there are no real rules here like "start at 50% lightness" or anything — every color behaves a bit differently, so you'll have to rely on your eyes for this one.
+
+Finding the edges
+-----------------
+
+Next, pick your darkest shade and your lightest shade. There's no real science to this either, but it helps to think about where they will be used and choose them using that context.
+
+The darkest shade of a color is usually reserved for text, while the lightest shade might be used to tint the background of an element.
+
+A simple alert component is a good example that combines both of these use cases, so it can be a great place to pick these colors.
+
+![](https://refactoring-ui.nyc3.cdn.digitaloceanspaces.com/previews/define-your-shades-up-front-03.png)
+
+Start with a color that matches the hue of your base color, and adjust the saturation and lightness until you're satisfied.
+
+Filling in the gaps
+-------------------
+
+Once you've got your base, darkest, and lightest shades, you just need to fill in the gaps in between them.
+
+For most projects, you'll need at least 5 shades per color, and probably closer to 10 if you don't want to feel too constrained.
+
+Nine is a great number because it's easy to divide and makes filling in the gaps a little more straightforward. Let's call our darkest shade _900_, our base shade _500_, and our lightest shade _100_.
+
+Start by picking shades _700_ and _300_, the ones right in the middle of the gaps. You want these shades to feel like the perfect compromise between the shades on either side.
+
+![](https://refactoring-ui.nyc3.cdn.digitaloceanspaces.com/previews/define-your-shades-up-front-04.png)
+
+This creates four more holes in the scale (_800_, _600_, _400_, and _200_), which you can fill using the same approach.
+
+![](https://refactoring-ui.nyc3.cdn.digitaloceanspaces.com/previews/define-your-shades-up-front-05.png)
+
+You should end up with a pretty balanced set of colors that provide just enough options to accommodate your design ideas without feeling limiting.
+
+What about greys?
+-----------------
+
+With greys the base color isn't as important, but otherwise the process is the same. Start at the edges and fill in the gaps until you have what you need.
+
+![](https://refactoring-ui.nyc3.cdn.digitaloceanspaces.com/previews/define-your-shades-up-front-06.png)
+
+Pick your darkest grey by choosing a color for the darkest text in your project, and your lightest grey by choosing something that works well for a subtle off-white background.
+
+It's not a science
+------------------
+
+As tempting as it is, you can't rely purely on math to craft the perfect color palette.
+
+A systematic approach like the one described above is great to get you started, but don't be afraid to make little tweaks if you need to.
+
+Once you actually start using your colors in your designs, it's almost inevitable that you'll want to tweak the saturation on a shade, or make a couple of shades lighter or darker. Trust your eyes, not the numbers.
+
+Just try to avoid adding _new_ shades too often if you can avoid it. If you're not dilligent about limiting your palette, you might as well have no color system at all.
+
+
+[Source](https://refactoringui.com/previews/building-your-color-palette/)
--- a/IT/WebDesign/emailHTML.md
+++ b/IT/WebDesign/emailHTML.md
@ -0,0 +1 @@
+[Rock Solid HTML Emails ◆ 24 ways](https://24ways.org/2009/rock-solid-html-emails)
--- a/IT/WebDesign/html.md
+++ b/IT/WebDesign/html.md
@ -0,0 +1,2 @@
+[HTMl Reference](https://htmlreference.io/)
+[CSS References](https://cssreference.io/)
--- a/IT/ansible.md
+++ b/IT/ansible.md
@ -0,0 +1,21 @@
+# ansible
+
+## commande ansible
+
+***launch playbook on staging***
+`ansible-playbook -i staging site.yml  --vault-password-file=.vaultpassword`
+
+***init new role architecture***
+`ansible-galaxy user_config init `
+
+***launch ansible bootstrap***
+` ansible-playbook -i nas, bootstrap.yml -u root --ask-pass`
+
+***encrypt string***
+`ansible-vault encrypt_string`
+
+## ignore know host file on ansible 
+```
+export ANSIBLE_HOST_KEY_CHECKING=False
+--ssh-extra-args='-o GlobalKnownHostsFile=/dev/null -o UserKnownHostsFile=/dev/null'
+```
--- a/IT/docker/index.md
+++ b/IT/docker/index.md
@ -0,0 +1,130 @@
+
+
+# docker
+
+## concept
+
+- image: template en lecture seul pouvant créer un container 
+- conteneur: instance d'une image
+
+## command
+
+- telecharger une image: ` docker pull debian:$tag`
+- crer et lancer un container en tty  ` docker run -it bash  `
+- arreter container: `docker stop`
+- démarrer containeur: `docker start`
+- lister tous les conteneur `docker ps -a`
+- delete conteneur: `docker rm 2cdc
+- run a commad in container: `docker exec `
+- voir stdout d'un container: `docker logs`
+- créer et lancer un conteneur `docker run -d --name node-app -p 3000:3000 -v $(pwd):/app node:0.12.4 node /app/server.js`
+    - -d lance en tant que daemon 
+    - --name permet de nommer le conteneur
+    - -p associe le port au port de l'hote (1er port pour l'hote et second pour le conteneur)
+    - -v $(pwd):/app : cette option permet de partager un dossier avec votre conteneur, ici, nous partageons le dossier courant (où se trouve notre fichier server.js) avec le dossier /app dans le conteneur (attention si vous êtes sur Mac ou Windows uniquement votre 'home' est partagé).
+    - node:0.12.4 : l'image Docker que vous voulez utiliser.
+    - node /app/server.js : la commande à exécuter dans le conteneur.
+
+## dockerfile
+
+```conf
+#FROM permet de définir notre image de base, vous pouvez l'utiliser seulement une fois dans un Dockerfile.
+FROM debian 
+
+
+#RUN permet d'exécuter une commande à l'intérieur de votre image comme si vous étiez devant un shell unix.
+RUN apt-get update \
+&& apt-get install -y curl xz-utils \
+&& rm -rf /var/lib/apt/lists/*
+
+RUN curl -LO "https://nodejs.org/dist/v12.2.0/node-v12.2.0-linux-x64.tar.xz" \
+&& tar -xJf node-v12.2.0-linux-x64.tar.xz -C /usr/local --strip-components=1 \
+&& rm node-v12.2.0-linux-x64.tar.xz
+#copy permet d'ajouter des fichiers locaux ou distants à l'intérieur de votre image, il est le plus souvent utilisé pour importer les sources de votre projet ou des fichiers de configuration.
+COPY package.json /app/
+
+#WORKDIR permet de changer le répertoire courant de votre image, toutes les commandes qui suivront seront exécutées à partir de ce répertoire.
+WORKDIR /app
+RUN npm install
+#ajoute le répertoire a projet a l'image
+COPY . /app/
+#ADD permet de rcupérer des source depuis un url ou d'extraire une archive
+#EXPOSE et VOLUME permettent respectivement d'indiquer quel port et quel dossier nous souhaitons partager.
+EXPOSE 3000
+
+VOLUME /app/log
+
+#USER permet de selectionner kl'utilisateur qui lancera le service
+#ENTRYPOINT ["executable", "param1", "param2"] sets the command and parameters that will be executed first when a container is run.
+
+#instruction qui doit s'exécuter au lancement du conteneur
+CMD node server.js
+```
+
+le .dockerignore permet comme un .gitignore de ne pas inclure certain fichiers dans l'image Docker,
+
+## créer image
+
+- lancer la build du fichier: `docker build -t nomducontainer:tag .`
+    - -t permet de nommer l'image docker
+pour ajouter un tag il faut utiliser 
+`docker tag`
+ 
+## docker compose
+
+permet de gérer plusieur container ensemble (IaS)
+exemple de fichier de confid en yaml:
+
+```yaml
+version: 3
+
+services:
+  #1 container postgress avec son image et ces variable d'environement
+  postgres:
+    image: postgres:10
+    environment:
+      POSTGRES_USER: rails_user
+      POSTGRES_PASSWORD: rails_password
+      POSTGRES_DB: rails_db
+
+  redis:
+    image: redis:3.2-alpine
+
+  rails:
+    #lance une build en fontion du dockerfile locale
+    build: .
+    #n'est construit que lorsque les dependance dont ok
+    #depends_on crée un pointage au sein du réseau créé par Docker entre conteneur
+    depends_on:
+      - postgres
+      - redis
+    environment:
+      DATABASE_URL: 'postgres://rails_user:rails_password@postgres:5432/rails_db'
+      REDIS_HOST: 'redis:6379'
+    #monte le répertoire local sur /app
+    volumes:
+      - .:/app
+
+  nginx:
+    image: nginx:latest
+    links:
+      - rails
+    ports:
+      - 3000:80
+      #on ne monte ici que un fichier de configuration
+    volumes:
+      - ./nginx.conf:/etc/nginx/conf.d/default.conf:ro
+```
+
+     
+
+- `docker-compose up` démarre les services décrits dans docker-compose.yml et ne rend pas la main.
+- `docker-compose up -d` fait la même chose mais rend la main une fois que les services sont démarrés.
+- `docker-compose up –build` reconstruit les services avant de les lancer.
+- `docker-compose down` stoppe les services.
+- `docker-compose restart` redémarre l’ensemble des services.
+- `docker-compose restart nginx` redémarre un des service (ici nginx).
+- `docker-compose exec rails bash` fournit une console bash au sein du conteneur rails.
+- `docker-compose logs` retourne l’ensemble des logs des services depuis le dernier démarrage et rend la main.
+- `docker-compose logs -f` affiche les logs des services et continue à les « écouter » sansrendre la main.
+- `docker-compose logs -f rails` fait la même chose pour le conteneur rails uniquement.
--- a/IT/domotique/homeassistant.md
+++ b/IT/domotique/homeassistant.md
@ -0,0 +1,16 @@
+# Home ASSistant 
+
+## instalation
+
+``` yay home-assistant ```
+
+- need mosquito broker for mqtt
+
+
+## Cheatsheet
+
+- [icon material](https://cdn.materialdesignicons.com/4.5.95/)
+
+## event
+
+- cube xiaomi xiaomi_aqara.cube_action
--- a/IT/domotique/index.md
+++ b/IT/domotique/index.md
@ -0,0 +1,8 @@
+# domotique
+
+[Hack Xiaomi gateway V2](https://easydomoticz.com/forum/viewtopic.php?t=8397))
+
+## jeedom
+- install docker avec database sur host
+``` docker run --net host --name jeedom-server --privileged -v /opt/jeedom:/var/www/html -e ROOT_PASSWORD=toto -e APACHE_PORT=9080 jeedom/jeedom:alpha ```
+- pour le l'hote SQL mettre 127.0.0.1
--- a/IT/fail2ban.md
+++ b/IT/fail2ban.md
@ -0,0 +1,332 @@
+
+
+1.  [Les réglages](#Les-reglages)
+2.  [Fail2Ban cli](#Fail2Ban-cli)
+
+
+## [](#Les-reglages "Les réglages")Les réglages
+
+Le fichier de configuration global `/etc/fail2ban/fail2ban.conf` ne contient pas grand chose à modifier. Vous pourrez paramétrer l’endroit où Fail2Ban doit enregistrer ses logs, la verbosité de ces derniers et modifier les réglages du socket unix. En ce qui me concerne, je ne touche à rien.
+
+`/etc/fail2ban/jail.conf` contient les _jails_ par défaut. Comme il est indiqué en haut du fichier, ce dernier n’est pas à modifier directement. On activera les _jails_ dans `/etc/fail2ban/jail.d/defaults-debian.conf` (Debian & Ubuntu), le nom du fichier est certainement différent sur d’autres distribs mais vous avez le chemin du répertoire. Vous devriez donc vous y retrouver sans problème.
+
+Dans sa configuration la plus simple, on se contente d’activer les _jails_ proposées par défaut. Voici par exemple une configuration minimaliste mais fonctionnelle.
+
+```
+
+[DEFAULT]
+destemail = mon-email@mail.fr
+sender = root@domaine.fr
+
+[sshd]
+enabled = true
+
+[sshd-ddos]
+enabled = true
+
+[recidive]
+enabled = true
+
+```
+
+On peut néanmoins y ajouer encore quelques détails. De plus sachez que pour chaque _jail_ ainsi que pour `[DEFAULT]`, vous pouvez préciser `ignoreip`, qui permet, comme son nom l’indique, de ne pas considérer certaines ip ou blocs d’ip. Pratique pour ne pas se retrouver à la porte de son propre serveur.
+
+```
+
+
+[DEFAULT]
+destemail = mon-email@mail.fr
+sender = root@domaine.fr
+ignoreip = 127.0.0.1/8
+
+[sshd]
+enabled = true
+
+
+[apache]
+enabled = true
+
+```
+
+Vous voyez par exemple que j’ai ici aussi ajouté `apache`. Si vous avez un serveur Apache, cela peut s’avérer utile. Pensez bien à parcourir le `jail.conf` ainsi que les filtres prédéfinis dans `filter.d` afin de voir ce qui existe par défaut et activez ou non des _jails_ selon vos besoins.
+
+Ce n’est pas tout, d’autres options courantes sont à connaître :
+
+*   `port` permet de préciser les ports à bloquer,
+*   `logpath` indique le fichier de log à analyser,
+*   `maxretry` le nombre d’occurences dans le fichier de log avant que l’action ne soit déclenchée,
+*   `findtime` permet de spécifier le laps de temps pendant lequel on considère les occurences (au dela de findtime, on repart à zéro),
+*   `bantime` définit le temps que l’ip restera bloquée via Fail2Ban.
+
+```
+
+[…]
+
+
+[sshd]
+enabled = true
+maxretry = 10
+findtime = 120
+bantime = 1200
+
+```
+
+Si vous parcourez `/etc/fail2ban/jail.conf`, vous pourrez voir les autres options qui s’appliquent par défaut si vous ne les redéfinissez pas.
+
+Enfin, vous pouvez également définir `backend`. Il s’agit de la méthode de _surveillance_ des logs. Quatre méthodes sont proposées :
+
+*   `pyinotify` : un module Python permettant de monitorer les modifications sur un fichier.
+*   `gamin` : même usage que le précédent, mais il s’agit d’un module du projet Gnome.
+*   `polling` : le fichier est simplement vérifier à intervales régulièrs afin de vérifier s’il y a eu des écritures.
+*   `systemd` : ici, Fail2Ban se greffe sur SystemD afin d’être alerté de nouveaux logs.
+*   `auto` : mode automatique, qui va tenter toutes les solutions sus-mentionnées, dans cet ordre.
+
+On peut donc dans la plupart des cas laisser `auto`. Sachez qu’il est toutefois possible de définir le `backend` au cas par cas au niveau de chaque jail.
+
+### [](#Ajout-de-nouveaux-filtres "Ajout de nouveaux filtres")Ajout de nouveaux filtres
+
+Ce qui est génial avec Fail2Ban, c’est qu’il est possible d’ajouter autant de _jails_ que l’on veut. Si vous savez utiliser les [REGEX](https://buzut.net/la-puissance-des-regex/), vous savez écrire une _jail_ !
+
+Nous commençons par créer un filtre afin de détecter les tentatives de connexion infructueuses. Dans un tel cas, notre applicatif devrait renvoyer une erreur 401. Voici un exemple de log que nous allons matcher :
+
+```
+80.214.431.42 - - [14/Oct/2018:21:27:32 +0200] "POST /users/login HTTP/2.0" 401 30 "https://app.buzeo.me/" "Mozilla/5.0 (Macintosh; Intel Mac OS X 10.14; rv:63.0) Gecko/20100101 Firefox/63.0" "-"
+
+```
+
+Voici à quoi ressemble notre filtre (`/etc/fail2ban/filter.d/nginx-unauthorized`).
+
+```
+
+
+
+[Definition]
+failregex =  - - \[.*\] ".*" 401
+ignoreregex =
+
+```
+
+C’est aussi simple que ça ! `<HOST>`, vous l’aurez deviné, permet à Fail2Ban de matcher une ip ou un nom d’hôte et de capturer cette adresse afin de la bloquer dans `iptables`. Le reste est assez classique. La `failregex` peut contenir plusieurs lignes, dans ce cas, chacune sera matchée de manière indépendante. Quant à l’`ignoreregex` son nom est assez explicite et elle permet de ne pas tenir compte d’un pattern donné.
+
+Modifions maintenant notre configuration dans `/etc/fail2ban/jail.d/defaults-debian.conf` pour activer notre nouveau filtre.
+
+```
+[…]
+
+
+[nginx-unauthorized]
+enabled = true
+
+filter = nginx-unauthorized
+port = 80,443 
+logpath = /var/log/nginx/access.log
+maxretry = 5
+findtime = 120
+bantime = 300
+
+```
+
+## [](#Fail2Ban-cli "Fail2Ban cli")Fail2Ban cli
+
+Fail2Ban possède plusieurs clients fort pratiques. `fail2ban-regex` permet de valider vos filtres et `fail2ban-client` permet de gérer tous les autres aspects du logiciel, de la vérification du contenu d’une jail au redémarrage de l’outil. Commençons par un rapide aperçu de l’outil regex.
+
+```
+fail2ban-regex <fichier-de-log | string-représentant-une-ligne-de-log> <chemin-du-filtre | string-regex> [<chemin-du-filtre | string-ignoregex]
+
+fail2ban-regex /var/log/nginx/access.log /etc/fail2ban/filter.d/nginx-unauthorized.conf
+
+```
+
+Ce n’est pas un bug, si vous voulez tester une `ignoreregex` depuis un fichier de filtre, il faut renseigner le chemin deux fois. Fort utile, le `fail2ban-regex` n’en est pas moins très simple d’usage.
+
+Passons maintenant au “centre de commandement” de Fail2ban : `fail2ban-client`. Ce dernier outil permet de vérifier l’état de Fail2Ban comme les _jails_ activées, le nombres d’ip bloquées etc. Voyons les fonctions les plus utiles.
+
+Tout d’abord, il est bon de préciser que cet outil peut avantageusement s’utiliser en mode interactif, pour lancer le mode interactif, on invoque la commande avec l’option `-i`.
+
+### [](#Commandes-de-base "Commandes de base")Commandes de base
+
+Les commandes de bases sont `start`, `reload`, `stop`, `status`, `ping`, `help`. Si la plupart d’entre elles se passent d’explications, attardons nous sur
+
+`start`
+
+Lance le serveur et les jails.
+
+`reload`
+
+recharge la configuration.
+
+`reload <JAIL>`
+
+recharge la configuration d'une jail uniquement.
+
+`stop`
+
+Arrête le serveur.
+
+`status`
+
+Retourne le statut du serveur : nombre de jails, filtres, nombres de fails…
+
+`ping`
+
+Permet simplement de s'assurer que le serveur répond.
+
+`help`
+
+Retourne l'ensemble des commandes possibles.
+
+Voici par exemple le retour de la commande `status`, nous n’utilisons pas ici le mode interactif.
+
+```
+
+fail2ban-client status
+Status
+|- Number of jail:    4
+`- Jail list:        ssh-ddos, nginx-errors, recidive, ssh
+
+```
+
+### [](#Le-logging "Le logging")Le logging
+
+Le logging est le cœur même de Fail2Ban, car sans logs, l’outil ne pourrait pas fonctionner. L’outil génère lui-même ses logs, explorables via la cli. Voyons donc quelles sont les options offertes par cette dernière.
+
+`set loglevel`
+
+Définit le niveau de logging.
+
+`get loglevel`
+
+Retourne le niveau de logging.
+
+`set logtarget`
+
+Définit la cible des logs (`STDOUT`, `STDERR`, `SYSLOG` ou chemin vers un fichier).
+
+`get logtarget`
+
+Retourne le chemin du fichier de log (ou autre si ce n'est pas un fichier).
+
+`flushlogs`
+
+Vide le fichier de logs (si disponible). Cette fonction est dédié à la rotation.
+
+### [](#Base-de-donnees "Base de données")Base de données
+
+Fail2Ban possède une base de données interne SQLite. Cette dernière permet de persister des informations entre redémarrages, notamment les ips à bloquer et de recréer les règles iptables au démarrage.
+
+`set dbfile`
+
+Définir la localisation de la base de données.
+
+`get dbfile`
+
+Retourne le chemin de la base de données.
+
+`set dbpurgeage`
+
+Définit la durée de rétention des informations dans la base de données.
+
+`get dbpurgeage`
+
+Récupère le nombre de secondes de rétentions des informations en base de données de la configuration actuelle.
+
+### [](#Controle-et-information-concernant-les-jails "Contrôle et information concernant les jails")Contrôle et information concernant les jails
+
+Le contrôle des prison est le nerf de la guerre dans Fail2Ban. Découvrons quelles sont les actions à notre disposition. Ci dessus les principales actions de contrôle.
+
+`add <JAIL> <BACKEND>`
+
+Active une jail et définit son backend (on mettra \`auto\` la plupart du temps).
+
+`start <JAIL>`
+
+Démarre une jail arrêtée.
+
+`stop <JAIL>`
+
+Arrête et désactive une jail.
+
+`status <JAIL>`
+
+Retourne les détails d'une jail en particulier.
+
+Voici par exemple le statut d’une jail.
+
+```
+fail2ban-client status ssh
+Status for the jail: ssh
+|- filter
+|  |- File list:    /var/log/auth.log
+|  |- Currently failed:    0
+|  `- Total failed:    4499
+`- Actions
+   |- Currently banned:    1
+   |- Total banned:    274
+   `- IP list: 176.140.156.45
+
+```
+
+Voyons maintenant plus en détails comment obtenir des informations détaillées concernant des jails en particulier.
+
+`get <JAIL> logpath`
+
+Retourne le chemin du fichier de log analysé par cette jail.
+
+`get <JAIL> logencoding`
+
+Récupère l'encodage du fichier de log utilisé par cette jail.
+
+`get <JAIL> journalmatch`
+
+Récupére les entrées du fichier de log matchées par cette jail.
+
+`get <JAIL> ignoreip`
+
+Affiche les ips ignorées.
+
+`get <JAIL> ignorecommand`
+
+Affiche les entrée du \`ignorecommand\` de cette jail.
+
+`get <JAIL> failregex`
+
+Affiche la \`failregex\` de cette jail.
+
+`get <JAIL> ignoreregex`
+
+Affiche l'\`ignoreregex\` de cette jail.
+
+`get <JAIL> findtime`
+
+Retourne le délai pris de prise en comtpe de tantatives pour cette jail.
+
+`get <JAIL> bantime`
+
+Retourne la durée de banissement pour cette jail.
+
+`get <JAIL> maxretry`
+
+Retourne le nombre d'erreurs tolérées avant banissement.
+
+`get <JAIL> maxlines`
+
+Retourne le nombre maximum de lignes analysées.
+
+`get <JAIL> actions`
+
+Affiche l'ensemble des actions liées à cette jail.
+
+Enfin, il est également possible d’altérer les paramètres des jails directement via la ligne de commande. Bien qu’on utilise en général directement les fichiers de configuration pour cela, ces commandes peuvent s’avérer particulièrement utiles afin de bannir ou dé-bannir manuellement des adresses.
+
+```
+
+fail2ban-client set <JAIL> banip <IP>
+
+
+fail2ban-client set <JAIL> unbanip <IP>
+
+```
+
+Il ne s’agit pas d’une liste exhaustive des possibilités offertes pas la ligne de commande Fail2Ban. De nombreux paramètres habituellement configurés via les fichiers de configuration sont également paramétrables via la CLI. Pour connaître toutes les possibilités, il suffit d’utiliser la commande `help`.
+
+Sachez cependant que Fail2Ban a encore d’autres tours dans son sac. En cas de match, il peut accomplir n’importe quel comportement (envoyer un email, rediriger vers une autre ip…). Pour en savoir plus je vous invite à lire la partie concernant les [actions de cet article](https://www.it-connect.fr/filtres-et-actions-personnalises-dans-fail2ban/#IV_Creation_dune_action_personnalisee) et [celui-ci en anglais](https://www.digitalocean.com/community/tutorials/how-fail2ban-works-to-protect-services-on-a-linux-server#examining-the-action-file).
--- a/IT/git.md
+++ b/IT/git.md
@ -0,0 +1,43 @@
+# git
+
+
+## delete a file only from git repository
+
+`git rm -rf --cached`
+
+## delete a file from complete history
+
+
+be carefull can't push repo last time use
+
+`git filter-branch --index-filter "git rm -rf --cached --ignore-unmatch logbook.md" HEAD `
+
+
+## example de déclencheur git
+
+```
+#!/bin/bash
+GIT_REPO=`pwd`
+SITE_NAME=notebook
+TMP_GIT_CLONE="/tmp/$SITE_NAME"
+PUBLIC_WWW="/usr/share/nginx/html/$SITE_NAME"
+# get branch name
+if ! [ -t 0 ]; then
+  read -a ref
+fi
+IFS='/' read -ra REF <<< "${ref[2]}"
+branch="${REF[2]}"
+
+if [ "master" == "$branch" ]; then
+mkdir -p $TMP_GIT_CLONE
+echo "download repo"
+git clone --recursive $GIT_REPO $TMP_GIT_CLONE
+cd $TMP_GIT_CLONE
+export PATH="$HOME/.local/bin:$PATH"
+make install -e BUILDDIR=$PUBLIC_WWW
+echo "Cleaning up"
+rm -Rf $TMP_GIT_CLONE
+fi
+exit
+
+```
--- a/IT/http/ampache_nginx_config.conf.md
+++ b/IT/http/ampache_nginx_config.conf.md
@ -0,0 +1,34 @@
+
+
+```
+if ( !-d $request_filename ) {
+    rewrite ^/ampache/rest/(.*)\.view$ /ampache/rest/index.php?action=$1 last;
+        rewrite ^/ampache/rest/play/(.+)$ /ampache/play/$1 last;
+}
+
+        rewrite ^/ampache/play/ssid/(\w+)/type/(\w+)/oid/([0-9]+)/uid/([0-9]+)/name/(.*)$ xi/ampache/play/index.php?ssid=$1&type=$2&oid=$3&uid=$4&name=$5 last;
+        rewrite ^/ampache/play/ssid/(\w+)/type/(\w+)/oid/([0-9]+)/uid/([0-9]+)/client/(.*)/noscrobble/([0-1])/name/(.*)$ /ampache/play/index.php?ssid=$1&type=$2&oid=$3&uid=$4&client=$5&noscrobble=$6&name=$7 last;
+        rewrite ^/ampache/play/ssid/(.*)/type/(.*)/oid/([0-9]+)/uid/([0-9]+)/client/(.*)/noscrobble/([0-1])/player/(.*)/name/(.*)$ /ampache/play/index.php?ssid=$1&type=$2&oid=$3&uid=$4&client=$5&noscrobble=$6&player=$7&name=$8 last;
+        rewrite ^/ampache/play/ssid/(.*)/type/(.*)/oid/([0-9]+)/uid/([0-9]+)/client/(.*)/noscrobble/([0-1])/bitrate/([0-9]+)/player/(.*)/name/(.*)$ /ampache/play/index.php?ssid=$1&type=$2&oid=$3&uid=$4&client=$5&noscrobble=$6&bitrate=$7player=$8&name=$9 last;
+        rewrite ^/ampache/play/ssid/(.*)/type/(.*)/oid/([0-9]+)/uid/([0-9]+)/client/(.*)/noscrobble/([0-1])/transcode_to/(w+)/bitrate/([0-9]+)/player/(.*)/name/(.*)$ /ampache/play/index.php?ssid=$1&type=$2&oid=$3&uid=$4&client=$5&noscrobble=$6&transcode_to=$7&bitrate=$8&player=$9&name=$10 last;
+    
+# The following line necessary for me to be able to download single songs 
+rewrite ^/ampache/play/ssid/(.*)/type/(.*)/oid/([0-9]+)/uid/([0-9]+)/action/(.*)/name/(.*)$ /ampache/play/index.php?ssid=$1&type=$2&oid=$3&uid=$4action=$5&name=$6 last;
+
+# used for transfering art work to some clients, seems not to work for clementine because of an clementine-internal issue
+location /ampache/play {
+         if (!-e $request_filename) {
+             rewrite ^/ampache/play/art/([^/]+)/([^/]+)/([0-9]+)/thumb([0-9]*)\.([a-z]+)$ /ampache/image.php?object_type=$2&object_id=$3&auth=$1;
+             break;
+         }
+         rewrite ^/([^/]+)/([^/]+)(/.*)?$ /ampache/play/$3?$1=$2;
+         rewrite ^/(/[^/]+|[^/]+/|/?)$ /ampache/play/index.php last;
+         break;
+}
+
+location /ampache/rest {
+         limit_except GET POST {
+         deny all;
+         }
+}
+```
--- a/IT/http/index.md
+++ b/IT/http/index.md
@ -0,0 +1,57 @@
+## 1×× Informational
+- 100 Continue
+  This interim response indicates that everything so far is OK and that the client should continue with the request or ignore it if it is already finished.
+
+## 2×× Success
+- 200 OK
+  The request has succeeded. The meaning of a success varies depending on the HTTP method:
+  GET: The resource has been fetched and is transmitted in the message body.
+  HEAD: The entity headers are in the message body.
+  POST: The resource describing the result of the action is transmitted in the message body.
+  TRACE: The message body contains the request message as received by the server
+- 201 Created
+  The request has succeeded and a new resource has been created as a result of it. This is typically the response sent after a PUT request.
+- 202 Accepted
+  The request has been received but not yet acted upon. It is non-committal, meaning that there is no way in HTTP to later send an asynchronous response indicating the outcome of processing the request. It is intended for cases where another process or server handles the request, or for batch processing.
+- 204 No content
+  There is no response body. We can use when we have PUT, DELETE.
+- 207 Multi-Status
+  The response body contains multiple status informations for different parts of a batch/bulk request
+
+## 3×× Redirection
+- 300 Multiple Choices
+  The request has more than one possible responses. User-agent or user should choose one of them. There is no standardized way to choose one of the responses.
+- 301 Moved Permanently
+  This response code means that URI of requested resource has been changed. Probably, new URI would be given in the response.
+- 302 Found
+  This response code means that URI of requested resource has been changed temporarily. New changes in the URI might be made in the future. Therefore, this same URI should be used by the client in future requests.
+- 303 See Other
+  Server sent this response to directing client to get requested resource to another URI with an GET request.
+- 304 Not Modified
+  This is used for caching purposes. It is telling to client that response has not been modified. So, client can continue to use same cached version of response.
+
+## 4×× Client Error
+- 400 Bad Request
+  This response means that server could not understand the request due to invalid syntax.
+- 401 Unauthorized
+  Authentication is needed to get requested response. This is similar to 403, but in this case, authentication is possible.
+- 403 Forbidden
+  Client does not have access rights to the content so server is rejecting to give proper response.
+- 404 Not Found
+  Server can not find requested resource. This response code probably is most famous one due to its frequency to occur in web.
+- 405 Method Not Allowed
+  The request method is known by the server but has been disabled and cannot be used. The two mandatory methods, GET and HEAD, must never be disabled and should not return this error code.
+- 429 Too many requests
+  The client does not consider rate limiting and sent too many requests.
+
+## 5×× Server Error
+- 500 Internal Server Error
+  The server has encountered a situation it doesn't know how to handle.
+- 501 Not Implemented
+  The request method is not supported by the server and cannot be handled. The only methods that servers are required to support (and therefore that must not return this code) are GET and HEAD.
+- 502 Bad Gateway
+  This error response means that the server, while working as a gateway to get a response needed to handle the request, got an invalid response.
+- 503 Service Unavailable
+  The server is not ready to handle the request. Common causes are a server that is down for maintenance or that is overloaded. Note that together with this response, a user-friendly page explaining the problem should be sent. This responses should be used for temporary conditions and the Retry-After: HTTP header should, if possible, contain the estimated time before the recovery of the service. The webmaster must also take care about the caching-related headers that are sent along with this response, as these temporary condition responses should usually not be cached.
+
+For more info: https://httpstatuses.com/
--- a/IT/http/nginx.md
+++ b/IT/http/nginx.md
@ -0,0 +1,19 @@
+# nginx
+## reverse proxy
+```    location /chainetv {
+        proxy_pass http://unix:/run/gunicorn/socket:/;
+        #proxy_set_header Host $host;
+        #proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
+        #proxy_set_header X-Scheme $scheme;
+        #proxy_set_header X-Script-Name /chainetv;
+        }
+
+```
+- le :/ aprés le socket sert a envoyer le sous répertoire a la suite de l'adresse demander l'appli  écoute donc la route /api
+- la parie commenté a le même fonctionnement mais permet un réglage plus fin associer a flask et la classe  ReverseProxied par exemple:
+    la location peut rediriger /chaine/api en metant le X-Script-ame a /chainetv l'appli peut donc écouter la route /api
+
+## Links
+
+- [Nginx configuration generator](https://github.com/valentinxxx/nginxconfig.io)
+- [Nginx Quick Reference](https://github.com/trimstray/nginx-quick-reference) ([HN](https://news.ycombinator.com/item?id=19112090)) - Notes describes how to improve Nginx performance, security and other important things.
--- a/IT/hugo.md
+++ b/IT/hugo.md
@ -0,0 +1,12 @@
+## hugo
+
+hugo is a static website generator
+
+## Usefull command
+
+- `hugo server -b localhost/starter` launch a test server on your local machine
+    - -b is for baseURL option depend to configuration
+    - you can add -t with theme name if you have few theme installed
+-  `hugo new site .` create a new site skeleton
+-  `hugo new test.md ` create a new file in content folder
+- `hugo` compile site
--- a/IT/install_nextcloud.md
+++ b/IT/install_nextcloud.md
@ -0,0 +1,189 @@
+# instalation NExt cloud
+## hook pacman
+- /etc/pacman.d/hooks/nextcloud.hook
+```
+[Trigger]
+Operation = Install
+Operation = Upgrade
+Type = Package
+Target = nextcloud
+Target = nextcloud-app-*
+  
+[Action]
+Description = Update Nextcloud installation
+When = PostTransaction
+Exec = /usr/bin/runuser -u http -- /usr/bin/php /usr/share/webapps/nextcloud/occ upgrade
+```
+
+## php
+- owner http /usr/share/webapps/nextcloud
+- Install PHP#gd and php-intl as additional modules. Configure OPcache as recommended by the documentation. Some apps (News for example) require the iconv extension, if you wish to use these apps, uncomment the extension in /etc/php/php.ini. 
+
+in php.ini
+```
+change memory_limit = 256M
+```
+
+- cree repertoire data 
+```
+mkdir /var/nextcloud
+chown http:http /var/nextcloud
+chmod 750 /var/nextcloud
+```
+- overide php-fpm 
+``` 
+[Service]
+ReadWritePaths = /usr/share/webapps/nextcloud/apps
+ReadWritePaths = /etc/webapps/nextcloud/config
+ReadWritePaths = /var/nextcloud
+ReadWritePaths = /mnt/diskstation
+```
+
+
+
+## config NGINX dédier:
+```
+upstream php-handler {
+#    server 127.0.0.1:9000;
+    server unix:/var/run/php-fpm/php-fpm.sock;
+}
+
+server {
+    listen 80;
+    listen [::]:80;
+    server_name _;
+
+    # Add headers to serve security related headers
+    # Before enabling Strict-Transport-Security headers please read into this
+    # topic first.
+    # add_header Strict-Transport-Security "max-age=15768000;
+    # includeSubDomains; preload;";
+    #
+    # WARNING: Only add the preload option once you read about
+    # the consequences in https://hstspreload.org/. This option
+    # will add the domain to a hardcoded list that is shipped
+    # in all major browsers and getting removed from this list
+    # could take several months.
+    add_header X-Content-Type-Options nosniff;
+    add_header X-XSS-Protection "1; mode=block";
+    add_header X-Robots-Tag none;
+    add_header X-Download-Options noopen;
+    add_header X-Permitted-Cross-Domain-Policies none;
+
+    # Path to the root of your installation
+    root /usr/share/webapps/nextcloud/;
+
+    location = /robots.txt {
+        allow all;
+        log_not_found off;
+        access_log off;
+    }
+
+    # The following 2 rules are only needed for the user_webfinger app.
+    # Uncomment it if you're planning to use this app.
+    #rewrite ^/.well-known/host-meta /public.php?service=host-meta last;
+    #rewrite ^/.well-known/host-meta.json /public.php?service=host-meta-json
+    # last;
+
+    location = /.well-known/carddav {
+      return 301 $scheme://$host/remote.php/dav;
+    }
+    location = /.well-known/caldav {
+      return 301 $scheme://$host/remote.php/dav;
+    }
+
+    # set max upload size
+    client_max_body_size 512M;
+    fastcgi_buffers 64 4K;
+
+    # Enable gzip but do not remove ETag headers
+    gzip on;
+    gzip_vary on;
+    gzip_comp_level 4;
+    gzip_min_length 256;
+    gzip_proxied expired no-cache no-store private no_last_modified no_etag auth;
+    gzip_types application/atom+xml application/javascript application/json application/ld+json application/manifest+json application/rss+xml application/vnd.geo+json application/vnd.ms-fontobject application/x-font-ttf application/x-web-app-manifest+json application/xhtml+xml application/xml font/opentype image/bmp image/svg+xml image/x-icon text/cache-manifest text/css text/plain text/vcard text/vnd.rim.location.xloc text/vtt text/x-component text/x-cross-domain-policy;
+
+    # Uncomment if your server is build with the ngx_pagespeed module
+    # This module is currently not supported.
+    #pagespeed off;
+
+    location / {
+        rewrite ^ /index.php$request_uri;
+    }
+
+    location ~ ^/(?:build|tests|config|lib|3rdparty|templates|data)/ {
+        deny all;
+    }
+    location ~ ^/(?:\.|autotest|occ|issue|indie|db_|console) {
+        deny all;
+    }
+
+    location ~ ^/(?:index|remote|public|cron|core/ajax/update|status|ocs/v[12]|updater/.+|ocs-provider/.+)\.php(?:$|/) {
+        fastcgi_split_path_info ^(.+?\.php)(/.*)$;
+        include fastcgi_params;
+        fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name;
+        fastcgi_param PATH_INFO $fastcgi_path_info;
+        #fastcgi_param HTTPS on;
+        #Avoid sending the security headers twice
+        fastcgi_param modHeadersAvailable true;
+        fastcgi_param front_controller_active true;
+        fastcgi_pass php-handler;
+        fastcgi_intercept_errors on;
+        fastcgi_request_buffering off;
+    }
+
+    location ~ ^/(?:updater|ocs-provider)(?:$|/) {
+        try_files $uri/ =404;
+        index index.php;
+    }
+
+    # Adding the cache control header for js and css files
+    # Make sure it is BELOW the PHP block
+    location ~ \.(?:css|js|woff|svg|gif)$ {
+        try_files $uri /index.php$request_uri;
+        add_header Cache-Control "public, max-age=15778463";
+        # Add headers to serve security related headers (It is intended to
+        # have those duplicated to the ones above)
+        # Before enabling Strict-Transport-Security headers please read into
+        # this topic first.
+        # add_header Strict-Transport-Security "max-age=15768000; includeSubDomains; preload;";
+        #
+        # WARNING: Only add the preload option once you read about
+        # the consequences in https://hstspreload.org/. This option
+        # will add the domain to a hardcoded list that is shipped
+        # in all major browsers and getting removed from this list
+        # could take several months.
+        add_header X-Content-Type-Options nosniff;
+        add_header X-XSS-Protection "1; mode=block";
+        add_header X-Robots-Tag none;
+        add_header X-Download-Options noopen;
+        add_header X-Permitted-Cross-Domain-Policies none;
+        # Optional: Don't log access to assets
+        access_log off;
+    }
+
+    location ~ \.(?:png|html|ttf|ico|jpg|jpeg)$ {
+        try_files $uri /index.php$request_uri;
+        # Optional: Don't log access to other assets
+        access_log off;
+    }
+}
+```
+- pour ssl [voir](https://docs.nextcloud.com/server/12/admin_manual/installation/nginx.html
+)
+
+## gestion database
+
+## share
+- reconfigurer les share serveur en NFS pour que http est accé en lecture (analize a faire pour l'inpact sur les autre service)
+
+# fichier de config
+
+# other
+- mettre en place cron de scan de fichier:
+```
+ php /usr/share/webapps/nextcloud/occ files:scan --all
+```
+
+- Configurer fail2ban 
--- a/IT/linux/AUR.md
+++ b/IT/linux/AUR.md
@ -0,0 +1,5 @@
+# AUR
+
+## update .SRCINFO
+
+`makepkg --printsrcinfo > .SRCINFO`
--- a/IT/linux/LVM.md
+++ b/IT/linux/LVM.md
@ -0,0 +1,26 @@
+# LVM
+
+## reduce logical volume
+
+You must get a blank output from this command as below
+
+`lsof /home`
+
+Next un-mount the partition
+`umount /home`
+
+check filesystem
+`e2fsck -flinux show file syste /dev/mapper/arch-home`
+
+resize file system
+`resize2fs /dev/mapper/arch-home 20G`
+
+reduce logical volume
+
+`lvreduce /dev/mapper/arch-home -L 20G`
+
+## increase logical volume
+
+`lvextend -L +44G /dev/mapper/arch-root`
+
+`resize2fs /dev/mapper/arch-root`
--- a/IT/linux/arch.md
+++ b/IT/linux/arch.md
@ -0,0 +1,9 @@
+## arch tips
+
+#### clés GPG corrompue ou usagé
+
+`sudo pacman -S archlinux-keyring`
+
+
+#### Personaliser un iso arch
+[archiso](https://wiki.archlinux.org/index.php/Archiso)
--- a/IT/linux/arch_install.md
+++ b/IT/linux/arch_install.md
@ -0,0 +1,133 @@
+---
+title: arch_install
+---
+The following is a brief installation tutorial for [Arch Linux][1]. It assumes
+familiarity with the Arch [Beginner's Guide][2] and [Installation Guide][3].
+
+It will provide a system using [LVM on LUKS][4].
+
+Note that this guide assumes you are performing the install to `/dev/sda`. In
+some cases, you may find that your USB install disk claimed `/dev/sda` and you
+want to install to `/dev/sdb`. Confirm which disk is which before proceeding.
+
+Boot into the Arch installer.
+
+If your console font is tiny ([HiDPI][7] systems), set a new font.
+
+    $ setfont sun12x22
+
+Connect to the Internet.
+
+Verify that the [system clock is up to date][8].
+
+    $ timedatectl set-ntp true
+
+(bios mode)
+
+    $ parted -s /dev/sda mklabel msdos
+    $ parted -s /dev/sda mkpart primary  1MiB 513MiB
+    $ parted -s /dev/sda mkpart primary 1024MiB 100%
+    $ mkfs.ext2 /dev/sda1
+    $ mkfs.ext4 /dev/sda2
+
+(UEFI mode) Create partitions for EFI, boot, and root.
+
+    $ parted -s /dev/sda mklabel gpt
+    $ parted -s /dev/sda mkpart primary fat32 1MiB 513MiB
+    $ parted -s /dev/sda set 1 boot on
+    $ parted -s /dev/sda set 1 esp on
+    $ parted -s /dev/sda mkpart primary 513MiB 1024MiB
+    $ parted -s /dev/sda mkpart primary 1024MiB 100%
+    $ mkfs.ext4 /dev/sda2
+    $ mkfs.fat -F32 /dev/sda1
+
+
+Create and mount the encrypted root filesystem. Note that for UEFI systems
+this will be partition 3.
+
+
+    $ pvcreate /dev/sda3pc
+    $ vgcreate arch /dev/mapper/lvm
+    $ lvcreate -L 4G arch -n swap
+    $ lvcreate -L 30G arch -n root
+    $ lvcreate -l +100%FREE arch -n home
+    $ lvdisplay
+    $ mkswap -L swap /dev/mapper/arch-swap
+    $ mkfs.ext4 /dev/mapper/arch-root
+    $ mkfs.ext4 /dev/mapper/arch-home
+    $ mount /dev/mapper/arch-root /mnt
+    $ mkdir /mnt/home
+    $ mount /dev/mapper/arch-home /mnt/home
+    $ swapon /dev/mapper/arch-swap
+
+(UEFI mode) Encrypt the boot partition using a separate passphrase from
+the root partition, then mount the boot and EFI partitions.
+
+    $ mkdir /mnt/boot
+    $ mount /dev/sda2 /mnt/boot
+    $ mkdir /mnt/boot/efi
+    $ mount /dev/sda1 /mnt/boot/efi
+
+Optionally [edit the mirror list][9].
+
+    $ vi /etc/pacman.d/mirrorlist
+
+Install the [base system][10].
+
+    $ pacstrap -i /mnt base base-devel net-tools wireless_tools dialog wpa_supplicant openssh git grub ansible
+    (UEFI mode) $ pacstrap /mnt efibootmgr
+
+Generate and verify [fstab][11].
+
+    $ genfstab -U -p /mnt >> /mnt/etc/fstab
+    $ less /mnt/etc/fstab
+
+Change root into the base install and perform [base configuration tasks][12].
+
+    $ arch-chroot /mnt /bin/bash
+    $ systemctl enable dhcpcd.service
+    $ systemctl enable sshd.service
+    $ passwd
+
+modifier /etc/ssh/sshd_config et mettre PermitRoorlogin yes
+
+Set your mkinitcpio.
+
+    # only for UEFI
+    $ sed -i 's/^HOOKS=.*/HOOKS="base udev autodetect modconf block keyboard  lvm2 resume filesystems fsck"/' /etc/mkinitcpio.conf
+    # for both
+    $ mkinitcpio -p linux
+
+Configure GRUB.
+
+    # BIOS mode 
+    $ grub-install /dev/sda
+    $ grub-mkconfig -o /boot/grub/grub.cfg
+    
+
+    # UEFI mode 
+    $ grub-install --target=x86_64-efi --efi-directory=/boot/efi --bootloader-id=grub --recheck
+    $ grub-mkconfig -o /boot/grub/grub.cfg
+    $ chmod -R g-rwx,o-rwx /boot
+
+Cleanup and reboot!
+
+    $ exit
+    $ umount -R /mnt
+    $ reboot
+
+Run ansible!
+
+
+[1]: https://www.archlinux.org/
+[2]: https://wiki.archlinux.org/index.php/Beginners'_guide
+[3]: https://wiki.archlinux.org/index.php/Installation_guide
+[4]: https://wiki.archlinux.org/index.php/Encrypted_LVM#LVM_on_LUKS
+[5]: http://www.pavelkogan.com/2014/05/23/luks-full-disk-encryption/
+[6]: https://wiki.archlinux.org/index.php/Dm-crypt/Encrypting_an_entire_system#Encrypted_boot_partition_.28GRUB.29
+[7]: https://wiki.archlinux.org/index.php/HiDPI
+[8]: https://wiki.archlinux.org/index.php/Beginners'_guide#Update_the_system_clock
+[9]: https://wiki.archlinux.org/index.php/Beginners'_Guide#Select_a_mirror
+[10]: https://wiki.archlinux.org/index.php/Beginners'_Guide#Install_the_base_system
+[11]: https://wiki.archlinux.org/index.php/Beginners'_guide#Generate_an_fstab
+[12]: https://wiki.archlinux.org/index.php/Beginners'_guide#Configure_the_base_system
--- a/IT/linux/cron.md
+++ b/IT/linux/cron.md
@ -0,0 +1,45 @@
+# cron
+
+```
+ # * * * * *  command to execute
+ # │ │ │ │ │
+ # │ │ │ │ │
+ # │ │ │ │ └───── day of week (0 - 6) (0 to 6 are Sunday to Saturday, or use names; 7 is Sunday, the same as 0)
+ # │ │ │ └────────── month (1 - 12)
+ # │ │ └─────────────── day of month (1 - 31)
+ # │ └──────────────────── hour (0 - 23)
+ # └───────────────────────── min (0 - 59)
+ ```
+
+ See also
+ - [wikipedia/cron](http://en.wikipedia.org/wiki/Cron)
+
+## cron directories
+You can create directories that run cron commands. Taken from the `Ubuntu`
+distro:
+```txt
+# /etc/crontab: system-wide crontab
+# Unlike any other crontab you don't have to run the `crontab'
+# command to install the new version when you edit this file
+# and files in /etc/cron.d. These files also have username fields,
+# that none of the other crontabs do.
+
+SHELL=/bin/sh
+PATH=/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin
+
+# m h dom mon dow user  command
+17 *    * * *   root    cd / && run-parts --report /etc/cron.hourly
+25 6    * * *   root    test -x /usr/sbin/anacron || ( cd / && run-parts --report /etc/cron.daily )
+47 6    * * 7   root    test -x /usr/sbin/anacron || ( cd / && run-parts --report /etc/cron.weekly )
+52 6    1 * *   root    test -x /usr/sbin/anacron || ( cd / && run-parts --report /etc/cron.monthly )
+```
+
+## run every weekday at midnight
+```sh
+0 0 * * 0-5
+```
+
+## edit cronjobs
+```sh
+$ sudo crontab -e
+```
--- a/IT/linux/grubshell.md
+++ b/IT/linux/grubshell.md
@ -0,0 +1,28 @@
+## grub_shell
+
+# booter depuis le shell grub
+
+- les commande **cat** et **ls** fonctionne
+-  trouver partition de boot
+-  mettre la partion en racine `set root=(hd0,1)`
+-  charger le kernel ce trouvant sur cette partition et setter la partition racine: `linux /vmlinuz root=/dev/sda3`
+-  charger le fichier image correspondant au kernel :`initrd /boot/initrd.img`
+-  enter `boot` to boot
+
+## regénérer config
+`grub-mkconfig -o /boot/grub/grub.cfg`
+
+## install sur MBR
+`grub-install --target=i386-pc /dev/sdX`
+## meme chose depuis grub rescue
+
+`grub rescue> set prefix=(hd0,1)/boot/grub
+grub rescue> set root=(hd0,1)
+grub rescue> insmod normal
+grub rescue> normal
+grub rescue> insmod linux
+grub rescue> linux /boot/vmlinuz-3.13.0-29-generic root=/dev/sda1
+grub rescue> initrd /boot/initrd.img-3.13.0-29-generic
+grub rescue> boot`
+
+[archwiki](https://wiki.archlinux.org/index.php/GRUB)
--- a/IT/linux/linux.md
+++ b/IT/linux/linux.md
@ -0,0 +1,48 @@
+## retrouvé date t'instalation
+`ls -lct /etc | tail -1 | awk '{print $6, $7, $8}'`
+
+## enable Wayland support:
+
+- execute `ln -s /dev/null /etc/udev/rules.d/61-gdm.rules` to avoid that gnome test your nvidia Driver
+
+- add `nvidia-drm.modeset=1` to GRUB_CMDLINE_LINUX_DEFAULT in*/etc/default/grub*
+
+- update grub config `grub-mkconfig -o /boot/grub/grub.cfg` in root
+
+- add nvidia module to mkinitcpio.cong:
+  `MODULES=(nvidia nvidia_modeset nvidia_uvm nvidia_drm)`
+
+- create pacman hook:
+```
+[Trigger]
+Operation=Install
+Operation=Upgrade
+Operation=Remove
+Type=Package
+Target=nvidia
+Target=linux
+# Change the linux part above and in the Exec line if a different kernel is used
+
+[Action]
+Description=Update Nvidia module in initcpio
+Depends=mkinitcpio
+When=PostTransaction
+NeedsTargets
+Exec=/bin/sh -c 'while read -r trg; do case $trg in linux) exit 0; esac; done; /usr/bin/mkinitcpio -P'
+```
+
+
+## see if you run on wayland:
+
+`loginctl show-session $(loginctl G $USERNAME|awk '{print $1}') -p Type`
+
+
+## boot in emergency target
+
+1. (Re)boot the machine
+2. Wait for the grub menu to appear, then hit “e”,
+3. scroll down to the “linux16” line then press the ‘end’ key
+4. type the following:
+systemd.unit=emergency.target
+5. press ctrl+x
+6. put root writable with `mount -o rw,remount /`
--- a/IT/migration_server_reminder.md
+++ b/IT/migration_server_reminder.md
@ -0,0 +1,8 @@
+- modifier le nat de la box
+- modifier le Cname www sur dns
+- ajouter le nouveau serveur au autorisation de réplication DNS si serveur DNS Slave
+- ajouter au autorisation NFS des share NFS (git,Cardav)
+- recréer partage syncthing
+- changer dns secondaire
+- rediriger backup
+- remettre le cron check server && dump SQL
--- a/IT/motorola.md
+++ b/IT/motorola.md
@ -0,0 +1,3 @@
+#Motorola
+
+[tuto root](https://forum.xda-developers.com/motorola-one-pro/development/root-twrp-3-4-0-android-10-t4156037)
--- a/conception.md
+++ b/conception.md
@ -0,0 +1 @@
+[patron de conception](https://fr.m.wikibooks.org/wiki/Patrons_de_conception/)
--- a/IT/python/flask.md
+++ b/IT/python/flask.md
--- a/IT/python/index.md
+++ b/IT/python/index.md
@ -0,0 +1,14 @@
+# python
+## référence
+https://github.com/gto76/python-cheatsheet/blob/master/README.md
+
+## Virtual env
+- create virtual env: `python3 -m venv /path`
+- enter in virtual env: `source env/bin/activate`
+- leave venv: `deactivate`
+- list all installed package in file: `pip freeze > requirement.txt`
+- install package list in  file: `pip install -r requirement.txt`
+
+## tips
+- pprint permet  d afficher vos structure de données
+- la fonction dir() permet de lister les attribut d un 
--- a/IT/raspberry.md
+++ b/IT/raspberry.md
@ -0,0 +1,9 @@
+#raspberry.md
+
+## activer sortie audio jack
+
+/boot/config.txt
+```
+device_tree_param=audio=on
+audio_pwm_mode=2
+```
--- a/IT/regex.md
+++ b/IT/regex.md
@ -0,0 +1,2 @@
+[regex prefaite](https://ihateregex.io/?q=)
+[regex101](https://regex101.com/)
--- a/IT/ssh.md
+++ b/IT/ssh.md
@ -0,0 +1,17 @@
+# ssh
+
+## port forwarding
+```
+Ssh -L 2000:toto:80 Vincent@tata
+```
+Redirigé le port local 2000 vers le port 80 de toto en passant par un tunnel via tata
+
+-f pour laisser la commande en arrière plan
+-R pour forwarder un port distant ici avec -R le port 2000 de tata sera rediriger vers le 80 de toto en passant par le client
+
+
+## ingore know host file
+
+```
+ssh -o GlobalKnownHostsFile=/dev/null -o UserKnownHostsFile=/dev/null
+```
--- a/IT/syncthing.MD
+++ b/IT/syncthing.MD
@ -0,0 +1,15 @@
+# list syncthing share on main Server
+- Pi2:
+    -name:beet_db
+     path:/mnt/diskstation/home/beet_db
+     type:sendreceive
+    -name:notes
+     path:/mnt/diskstation/home/notes2
+     type:sendreceive
+    -name:Caméra
+     path:/mnt/diskstation/photo/backup
+     type:receiveonly
+    -name:keepass
+     path:/mnt/diskstation/home/keepass
+     type:sendreceive
+    
--- a/IT/synologyTips.md
+++ b/IT/synologyTips.md
@ -0,0 +1,8 @@
+## Tips on synology NAS
+
+### debug the ssl certificate renew on synology
+in case of error in the renewal of synology certificate with let's encrypt proceed like this:
+
+- connect to synology with SSH
+- enter command ```sudo /usr/syno/sbin/syno-letsencrypt renew-all -v```
+  
--- a/Show More
+++ b/Show More
				`@ -0,0 +1 @@`
				République. J’aime le son de ce mot. Il signifie que les gens peuvent vivre libres, parler comme bon leur semble, aller et venir, acheter ou vendre, s’enivrer ou rester sobres, selon leurs désirs. Certains mots vous font vibrer. République est l’un de ces mots qui me nouent la gorge – la même sensation qui s’empare du père voyant voit son bébé faire ses premiers pas ou son premier enfant entreprendre de se raser et parler comme un homme. Certains mots vous réchauffent le cœur. République est l’un de ces mots.
				`@ -0,0 +1 @@`
				`[Javascript without JQuery](https://github.com/nefe/You-Dont-Need-jQuery)`
				`@ -0,0 +1 @@`
				`[Rock Solid HTML Emails ◆ 24 ways](https://24ways.org/2009/rock-solid-html-emails)`
				`@ -0,0 +1 @@`
				`[patron de conception](https://fr.m.wikibooks.org/wiki/Patrons_de_conception/)`