ansible/roles/postgre/tasks/main.yml

---
- name: Install postgre and usefull packages
  apt:
    update_cache: yes
    name:
      - acl # Don't ask me, required by postgresql_user
      - postgresql
      - postgresql-contrib
      - libpq-dev
      - python3-dev
      - python3-psycopg2
      - libpq5
    state: latest
  register: apt_result
  retries: 3
  until: apt_result is succeeded

- name: Enable and start PostgreSQL
  systemd:
    name: postgresql.service
    state: started
    enabled: yes

- name: Create users
  become: true
  become_user: postgres
  postgresql_user:
    name: "{{ item.name }}"
    encrypted: yes
    password: "{{ item.password }}"
  loop: "{{ postgres_users }}"

- name: Create databases
  become: true
  become_user: postgres
  postgresql_db:
    name: "{{ item.name }}"
    encoding: UTF-8
    owner: "{{ item.owner | default(omit) }}"
    lc_collate: "{{ item.local | default(omit) }}"
    lc_ctype: "{{ item.local | default(omit) }}"
    template: "{{ item.template | default(omit) }}"
  loop: "{{ databases }}"

- name: Set encoding
  become: true
  become_user: postgres
  postgresql_query:
    query: "ALTER ROLE {{ item }} SET client_encoding TO 'utf8'"
  loop: "{{ postgres_users | map(attribute='name') }}"

- name: Set encoding
  become: true
  become_user: postgres
  postgresql_query:
    query: "ALTER ROLE {{ item }} SET default_transaction_isolation TO 'read committed'"
  when: item.read_committed | default(false)
  loop: "{{ postgres_users | map(attribute='name') }}"

- name: Set timezone
  become: true
  become_user: postgres
  postgresql_query:
    query: "ALTER ROLE {{ item }} SET timezone TO 'CET'"
  loop: "{{ postgres_users | map(attribute='name') }}"