hetzner-ha-wordpress/ansible/roles/mysql-replication/tasks/main.yaml

---
- name: Write config
  ansible.builtin.template:
    src: "mysql.cnf.j2"
    dest: "/etc/mysql/mariadb.conf.d/50-server.cnf"
    mode: "0644"
  become: true

- name: restart mysql
  ansible.builtin.service:
    name: mysql
    state: restarted
    enabled: true
  become: true

- name: Create replication user
  community.mysql.mysql_user:
    state: present
    login_user: root
    login_password: "{{ mysql_root_password }}"
    name: "{{ mysql.replication_user }}"
    password: "{{ mysql_replication_pass }}"
    host: "%"
    tls_requires:
    priv:
      "*.*": "REPLICATION SLAVE"
    login_unix_socket: /var/run/mysqld/mysqld.sock
  become: true
  when: ansible_hostname == mysql.replication_master_hostname

- name: Get master replication status
  community.mysql.mysql_replication:
    login_user: root
    login_password: "{{ mysql_root_password }}"
    mode: getmaster
  register: repl_stat
  when: ansible_hostname == mysql.replication_master_hostname

- debug: var=repl_stat

- name: Check if slave is already configured as replica
  community.mysql.mysql_replication:
    login_user: root
    login_password: "{{ mysql_root_password }}"
    mode: getslave
  ignore_errors: true
  register: slave
  when: ansible_hostname in mysql.replication_slaves

- name: Setup slaves
  community.mysql.mysql_replication:
    login_user: root
    login_password: "{{ mysql_root_password }}"
    mode: changemaster
    master_host: "{{ mysql.replication_master_ip }}"
    master_log_file: "{{ hostvars['web1'].repl_stat.File }}"
    master_log_pos: "{{ hostvars['web1'].repl_stat.Position }}"
    master_user: "{{ mysql.replication_user }}"
    master_password: "{{ mysql_replication_pass }}"
  when: ansible_hostname in mysql.replication_slaves

- name: Start slave replication
  community.mysql.mysql_replication:
    login_user: root
    login_password: "{{ mysql_root_password }}"
    mode: startslave
  when: ansible_hostname in mysql.replication_slaves and not slave.Is_Slave