---
- name: stop master node
  hosts: postgres[0]
  tasks:
  - name: stop postgresql
    service:
      name: postgresql@11-main
      state: stopped

- name: pause for 45 seconds
  hosts: localhost
  tasks:
    - pause:
        seconds: 45

- name: set correct host to correct groups
  hosts: postgres
  tasks:
    - name: add db0 to fenced group
      add_host:
        name: "{{ groups['postgres'][0] }}"
        groups: [ 'postgres_fenced', 'postgres_standby' ]

    - name: add db1 to primary group
      add_host:
        name: "{{ groups['postgres'][1] }}"
        groups: postgres_primary

# db0 is now fenced, import playbook to switch it back to standby
- import_playbook: ../../playbooks/postgres-maintenance/rephacheck_status.yml
- import_playbook: ../../playbooks/postgres-maintenance/fenced_to_standby.yml

- name: pause for 45 seconds
  hosts: localhost
  tasks:
    - pause:
        seconds: 45

# db0 is now standby, import playbook to switch it back as primary
- import_playbook: ../../playbooks/postgres-maintenance/rephacheck_status.yml
- import_playbook: ../../playbooks/postgres-maintenance/standby_to_primary.yml

- name: pause for 45 seconds
  hosts: localhost
  tasks:
    - pause:
        seconds: 45

# db0 is now primary, restart repmgrd
- import_playbook: ../../playbooks/postgres-maintenance/rephacheck_status.yml
- import_playbook: ../../playbooks/postgres-maintenance/restart_repmgrd.yml

...