ansible/roles/postgresql_server/tasks/main.yml

---
- name: Install postgresql
  apt:
    update_cache: true
    name: postgresql
    state: present
  register: apt_result
  retries: 3
  until: apt_result is succeeded

- name: Ensure main postgresql directory exists
  file:
    path: /etc/postgresql/{{ postgresql.version }}/main/
    state: directory
    owner: postgres
    group: postgres
    mode: 0755
    recurse: true

- name: Ensure configuration directory exists
  file:
    path: /etc/postgresql/{{ postgresql.version }}/main/conf.d
    state: directory
    owner: postgres
    group: postgres
    mode: 0755

- name: Configuration of postgresql {{ postgresql.version }}
  template:
    src: postgresql/{{ item }}.j2
    dest: /etc/postgresql/{{ postgresql.version }}/main/{{ item }}
    mode: 0640
    owner: postgres
    group: postgres
  loop:
    - pg_hba.conf
    - postgresql.conf
  notify:
    - restart postgresql

- name: Create databases
  postgresql_db:
    name: "{{ item.name }}"
  loop: "{{ postgresql_databases }}"

- name: Create users
  postgresql_user:
    db: "{{ item.database }}"
    name: "{{ item.name }}"
    password: "{{ item.password }}"
    priv: "{{ item.priv }}"
  loop: "{{ postgresql_users }}"
...