community.mysql/tests/integration/setup_mysql_replication/tasks/setup_mysql_cluster.yml

# We run two servers listening different ports
# to be able to check replication (one server for master, another for standby).

- name: Install PyMySQL package via pip
  pip:
    name: PyMySQL
    state: present

- name: Install Repo
  yum:
    name: '{{ repo_link }}'

- name: Install MySQL community server
  yum:
    name: '{{ mysql_package_name }}'

- name: Create directories
  file:
    state: directory
    path: "{{ item }}"
    owner: mysql
    group: mysql
  loop:
  - "{{ master_datadir }}"
  - "{{ standby_datadir }}"
  - "{{ standby_logdir }}"
  - "{{ default_logdir }}"

- name: Copy cnf templates
  template:
    src: '{{ item.conf_templ }}'
    dest: '{{ item.conf_dest }}'
    owner: mysql
    group: mysql
    force: yes
  loop:
  - { conf_templ: my-1.cnf.j2, conf_dest: '{{ master_cnf }}' }
  - { conf_templ: my-2.cnf.j2, conf_dest: '{{ standby_cnf }}' }

- name: Initialize DBs
  shell: 'mysqld --user=mysql --initialize-insecure --datadir={{ item }}'
  loop:
  - '{{ master_datadir }}'
  - '{{ standby_datadir }}'

- name: Start master services
  shell: 'mysqld --defaults-file={{ master_cnf }} --user=mysql --datadir={{ master_datadir }} --log-error={{ mysqld_err_log }} &'

- name: Start standby services
  shell: 'mysqld --defaults-file={{ standby_cnf }} --user=mysql --datadir={{ standby_datadir }} --log-error={{ mysqld_err_log }} &'

- name: Pause
  pause: seconds=3

########### For painful debug uncomment the lines below ##
#- name: DEBUG Check  log
#  shell: 'cat {{ mysqld_err_log }}'
#  ignore_errors: yes
##########################################################

- name: Check connection to the master
  shell: 'echo "SHOW DATABASES;" | mysql -P {{ master_port }} -h 127.0.0.1'

- name: Check connection to the standby
  shell: "echo \"SHOW VARIABLES LIKE '%version%';\" | mysql -P {{ standby_port }} -h 127.0.0.1"