tasks/postgres.yml

---
- block:

  - name: Obtain pgmaster IP for DC 2, if not provided
    set_fact:
      pgmaster_ip: "{{ hostvars[groups['dc2-pgmaster'][0]][interface_name].ipv4.address }}"
    when: pgmaster_ip is not defined and groups['dc2-pgmaster'] is defined

  - name: Obtain pgstandby IP for DC 2, if not provided
    set_fact:
      pgstandby_ip: "{{ hostvars[groups['dc2-pgstandby'][0]][interface_name].ipv4.address }}"
    when: pgstandby_ip is not defined and groups['dc2-pgstandby'] is defined

  - name: Set pgmaster_ip for DC 2, in cache, if defined
    cache:
      key: pgmaster_ip
      value: '{{ pgmaster_ip }}'
    when: pgmaster_ip is defined

  - name: Set pgstandby_ip for DC 2, in cache, if defined
    cache:
      key: pgstandby_ip
      value: '{{ pgstandby_ip }}'
    when: pgstandby_ip is defined

  when: (groups['dc2-pgmaster'] is defined or groups['dc2-pgstandby'] is defined) and inventory_hostname in groups['dc2']

- block:
  - name: Obtain pgmaster IP for DC 1, if not provided
    set_fact:
      pgmaster_ip: "{{ hostvars[groups['dc1-pgmaster'][0]][interface_name].ipv4.address }}"
    when: pgmaster_ip is not defined and groups['dc1-pgmaster'] is defined

  - name: Obtain pgstandby IP for DC 1, if not provided
    set_fact:
      pgstandby_ip: "{{ hostvars[groups['dc1-pgstandby'][0]][interface_name].ipv4.address }}"
    when: pgstandby_ip is not defined and groups['dc1-pgstandby'] is defined

  - name: Set pgmaster_ip for DC 1, in cache, if defined
    cache:
      key: pgmaster_ip
      value: '{{ pgmaster_ip }}'
    when: pgmaster_ip is defined

  - name: Set pgstandby_ip for DC 1, in cache, if defined
    cache:
      key: pgstandby_ip
      value: '{{ pgstandby_ip }}'
    when: pgstandby_ip is defined

  when: (groups['dc1-pgmaster'] is defined or groups['dc1-pgstandby'] is defined) and inventory_hostname in groups['dc1']

- block:
  - name: Obtain pgmaster IP for DC 1, if not provided
    set_fact:
      pgmaster_ip: "{{ groups['dc1-pgmaster'][0] }}"

  - name: Obtain pgstandby IP for DC 1, if not provided
    set_fact:
      pgstandby_ip: "{{ groups['dc2-pgstandby'][0] }}"

  - name: Set pgmaster_ip for DC 1, in cache, if defined
    cache:
      key: pgmaster_ip
      value: '{{ pgmaster_ip }}'

  - name: Set pgstandby_ip for DC 1, in cache, if defined
    cache:
      key: pgstandby_ip
      value: '{{ pgstandby_ip }}'

  when: groups['dc1-pgmaster'] is defined and groups['dc2-pgstandby'] is defined