vn-ansible/roles/db/tasks/mariadb.yml

- name: Ensure Install requirements for MariaDB repository setup script
  apt:
    name: "{{ mariadb_requeriments }}"
    state: present
    install_recommends: no

- name: Download required setup files
  get_url:
    url: "{{ item.url }}"
    dest: "{{ item.dest }}"
    mode: "{{ item.mode }}"
  loop: "{{ downloads }}"

- name: Run MariaDB repository setup script
  command:
    cmd: "/bin/bash /tmp/mariadb_repo_setup --mariadb-server-version=10.11.10"
    creates: "/etc/apt/sources.list.d/mariadb.list"

- name: Install Percona repository package
  apt:
    deb: "/tmp/percona-release_latest.generic_all.deb"
    state: present
    install_recommends: no

- name: Update apt cache
  apt:
   update_cache: yes

- name: Install MariaDB packages
  apt:
    name: "{{ mariadb_base_packages }}"
    state: present
    install_recommends: no

- name: Add tmpfs in /etc/fstab
  blockinfile:
    path: /etc/fstab
    marker: "# {mark} ANSIBLE-MANAGED TMPFS ENTRY"
    block: |
      tmpfs /mnt/mysqltmp         tmpfs rw,size={{ mysqltmpsize }}         0 0
  register: fstab

- name: Configure MariaDB memory check CRON
  template:
    src: check-memory.cron
    dest: /etc/cron.d/vn-check-memory
    owner: root
    group: root
    mode: u=rw,g=r,o=r

- name: Configure MariaDB scheduler log CRON
  copy:
    src: scheduler-log.cron
    dest: /etc/cron.d/vn-scheduler-log
    owner: root
    group: root
    mode: u=rw,g=r,o=r

- name: Insert MySQL certificates
  no_log: true
  copy:
    content: "{{ item.content }}"
    dest: "{{ item.dest }}"
    owner: mysql
    group: mysql
    mode: "{{ item.mode }}"
  loop: "{{ certificates }}"
  notify: restart-mariadb

- name: Ensure required directories exist
  file:
    path: "{{ item.path }}"
    state: directory
    owner: "{{ item.owner }}"
    group: "{{ item.group }}"
    mode: "{{ item.mode }}"
  loop: "{{ required_directories }}"

- name: Copy required MariaBackup files and scripts
  copy:
    src: "{{ item.src }}"
    dest: "{{ item.dest }}"
    owner: root
    group: root
    mode: "{{ item.mode }}"
  loop: "{{ required_mariabackup_files_and_scripts }}"

- name: Set MariaDB common configuration
  copy:
    src: conf/z90-vn.cnf
    dest: /etc/mysql/mariadb.conf.d/
    owner: root
    group: root
    mode: u=rw,g=r,o=r
  notify: restart-mariadb

- name: Set MariaDB local configuration template
  template:
    src: conf/z99-local.cnf
    dest: /etc/mysql/mariadb.conf.d/
    owner: root
    group: root
    mode: u=rw,g=r,o=r

- name: Set MariaBackup connection configuration
  template:
    src: mariabackup/my.cnf
    dest: /root/mariabackup/
    owner: root
    group: root
    mode: u=rw,g=,o=

- name: Override MariaDB systemd service configuration
  copy:
    src: mariadb_override.conf
    dest: /etc/systemd/system/mariadb.service.d/override.conf
    owner: root
    group: root
    mode: u=rw,g=r,o=r
  notify: reload-systemd

- name: Set MariaDB NRPE configuration
  copy:
    src: nrpe/95-mariadb.cfg
    dest: /etc/nagios/nrpe.d/
    owner: root
    group: root
    mode: u=rw,g=r,o=r
  notify: restart-nrpe

- name: Check if /var/lib/mysql/ exists
  stat:
    path: /var/lib/mysql/
  register: mysql_dir

- when: mysql_dir.stat.exists
  block:

  - name: Sync MySQL data directory
    synchronize:
      src: /var/lib/mysql/
      dest: /mnt/mysqldata/mysql/
      archive: true
      compress: true
      recursive: true
    delegate_to: "{{ inventory_hostname }}"
  
  - name: Remove old MySQL data after sync
    file:
      path: /var/lib/mysql/
      state: absent

- name: Mount all filesystems from /etc/fstab
  command: mount -a
  when: fstab.changed