homelab/ansible/playbooks/database.yml

---
- hosts: database
  vars:
  # certbot_force: true
  pre_tasks:
    - name: Add database member to pg_hba replication
      set_fact:
        postgresql_hba_entries: "{{postgresql_hba_entries + [\
          {'type':'host', \
          'database': 'replication',\
          'user':'repli',\
          'address':hostvars[item]['ansible_'+default_interface]['ipv4']['address']+'/32',\
          'auth_method':'trust'}] }}"
      loop: "{{ groups.database }}"
  roles:
    - role: ansible-role-postgresql
      become: true
  tasks:
    - name: add pg_read_all_data to dump
      community.postgresql.postgresql_membership:
        target_roles:
          - dump
        groups:
          - pg_read_all_data
      become: true
      become_user: "{{ postgresql_user }}"
      when: inventory_hostname in groups["database_active"]
    - name: Check if inactive database is initialised
      ansible.builtin.stat:
        path: /var/lib/postgres/data/postgresql.conf
      become: true
      register: in_recovery
    - name: Launch replication
      command: pg_basebackup -D /var/lib/postgres/data  -h {{groups["database_active"]|first}} -U repli -Fp -Xs -P -R -w
      become: true
      become_user: postgres
      when: inventory_hostname in groups["database_standby"] and not in_recovery.stat.exists
    - name: Ensure PostgreSQL is started and enabled on boot.
      service:
        name: "{{ postgresql_daemon }}"
        state: "{{ postgresql_service_state }}"
        enabled: "{{ postgresql_service_enabled }}"
      become: true
    - name: Install pg_vector.rs
      aur:
        name: pgvecto.rs-bin
      become: true
      become_user: aur_builder