add backup task

defaults/main.yml

@@ -25,3 +25,6 @@ consul_servers_list: "\
 consul_join: []
 consul_join_wan: []
 consul_bootstrap_expect: 3
+consul_snapshot: false
+consul_backup_location: ""
+consul_cron_hour: 1

files/cs-backup.sh

@@ -0,0 +1,39 @@
+export PATH_SNAPSHOT=$1
+export PATH_DIR="daily"
+export PATH_BACKUP=$PATH_SNAPSHOT"/"$PATH_DIR
+export TOKEN_AUTH_PROD=
+export TOKEN_AUTH_STAGING=
+export RETENTION=30
+export ENV="0"    # (0 = staging, 1 = production)
+export SNAPSHOT_FILE=$(date +%Y-%m-%d)
+
+select_env() {
+  if [ "$ENV" = "0" ]
+  then
+    export ENV_TOKEN="$TOKEN_AUTH_STAGING"
+  else
+    export ENV_TOKEN="$TOKEN_AUTH_PROD"
+  fi
+}
+
+create_snapshot_folder(){
+  mkdir -p $PATH_BACKUP
+}
+
+run_snapshot() {
+  select_env
+  /usr/bin/consul snapshot save -token=$ENV_TOKEN $PATH_BACKUP/$SNAPSHOT_FILE.snap
+}
+
+retention() {
+find $PATH_BACKUP -name "*.snap" -mtime +${RETENTION} -print -exec rm {} \;
+}
+
+main() {
+  create_snapshot_folder
+  run_snapshot
+  retention
+}
+
+### START HERE ###
+main $@

tasks/main.yml

@@ -27,6 +27,23 @@
         owner: consul
         mode: 0644
   notify: reload consul configuration
+
+- name: configure backup
+  block:
+    - name: copy backup script
+      copy:
+        dest: "{{ consul_data_dir }}/cs-backup.sh"
+        mode: 0744
+        owner: consul
+        src: cs-backup.sh
+    - name: consul snaphot cron.d
+      cron:
+        name: consul backup
+        user: consul
+        state: present
+        job: "{{ consul_data_dir }}/cs-backup.sh {{ consul_backup_location }}"
+        hour: "{{consul_cron_hour}}"
+  when: consul_snapshot
 - name: ensure service is started
   systemd:
     name: "{{  consul_service_name }}"