automation/deployer/roles/build/tasks/postgres.yml

---
# Needs variables:
#   - site: dict describing the site install (cf group_vars/all/vars.yml)

- name: "Create database {{ site.postgres_database }} if inexistent"
  postgresql_db:
    name: "{{ site.postgres_database }}"
    owner: "{{ site.postgres_username }}"
    encoding: "UTF-8"
    lc_collate: "C"
    lc_ctype: "C"
    template: template0
    state: present
  become: yes
  become_user: postgres

- name: "Add database user {{ site.postgres_username }} and grant all privileges on {{ site.postgres_database }}"
  postgresql_user:
    # Credentials of the new db user
    name: "{{ site.postgres_username }}"
    password: "{{ site.postgres_password }}"
    db: "{{ site.postgres_database }}"
    priv: ALL
    # host: "{{ site.subnet_site_ip }}"
  become: yes
  become_user: postgres

- name: "Authorize {{ site.subnet_site_ip }} to login to Postres as user {{ site.postgres_username }}"
  postgresql_pg_hba:
    dest: "{{ postgres.pg_hba_path }}"
    contype: host 
    users: "{{ site.postgres_username }}"
    source: "{{ site.subnet_site_ip }}"
    databases: "{{ site.postgres_database }}"
    method: md5
    state: present
  become: yes
  become_user: postgres
  notify: Restart postgres