ansible-mysql/tasks/galera/nodes.yml

---

- name: COMMAND | GET debian.cnf from primary node
  ansible.builtin.command: cat /etc/mysql/debian.cnf
  register: debiancnf
  delegate_to: '{{ mariadb_galera_primary_node }}'
  changed_when: false

- name: COMMAND | Get current debian.cnf
  ansible.builtin.command: cat /etc/mysql/debian.cnf
  register: ondc
  changed_when: false

- name: BLOCK | Compare debian.cnf
  when: debiancnf.stdout != ondc.stdout
  block:

    - name: SERVICE | Stop MariaDB
      ansible.builtin.service:
        name: "{{ mariadb_service_name }}"
        state: stopped

    - name: COPY | Paste primary node's debian.cnf
      ansible.builtin.copy:
        content: "{{ debiancnf.stdout }}"
        dest: /etc/mysql/debian.cnf
        mode: 0600
        owner: root
        group: root
      register: paste

    - name: SERVICE | Start MariaDB
      ansible.builtin.service:
        name: "{{ mariadb_service_name }}"
        state: started