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

# Review /root/scripts/check-memory.sh --> It's not optimal to do what this program does
# Also review the cron task /root/scripts/scheduler-log.sh

- 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: Set MariaDB Cron to /etc/cron.d
  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 }}"

- when: db.branch == 'master'
  block:

  - name: Ensure required directories exist in Production
    file:
      path: "{{ item.path }}"
      state: directory
      owner: "{{ item.owner }}"
      group: "{{ item.group }}"
      mode: "{{ item.mode }}"
    loop: "{{ required_directories_master }}"
  
  - name: Set MariaDB custom configuration Production
    copy:
      src: "{{ item }}"
      dest: /etc/mysql/mariadb.conf.d/
      owner: root
      group: root
      mode: u=rw,g=r,o=r
    with_items:
      - "mariaconfigfiles/z90-vn.cnf"
      - "mariaconfigfiles/z95-production.cnf"
    notify: restart-mariadb
  
  - name: Reminder to check mount points
    debug:
      msg: |
        Remember to check the following mount points:
        - /var/lib/mysql
        - /mnt/mysqlbin
        - /mnt/local-backup
        Make sure they are correctly configured and accessible.        

- when: db.branch == 'test'

  block:
  - name: Set MariaBackup custom template configuration TestDB
    template:
      src: test-db_dev/apply.config.sh
      dest: /root/mariabackup/
      owner: root
      group: root
      mode: u=rw,g=,o=

  - name: Reminder to check mount points environment TestDB
    debug:
      msg: |
        Remember to check the following mount points:
        - /mnt/mysqltmp
        Make sure they are correctly configured and accessible.        

- when: db.branch == 'dev'

  block:
  - name: Set MariaBackup custom template configuration DevDB
    template:
      src: test-db_dev/apply.config.sh
      dest: /root/mariabackup/
      owner: root
      group: root
      mode: u=rw,g=,o=

  - name: Reminder to check mount points environment DevDB
    debug:
      msg: |
        Remember to check the following mount points:
        - /mnt/mysqltmp
        Make sure they are correctly configured and accessible.        

- when: db.branch == 'dev' or db.branch == 'test'

  block:
  - name: Set MariaDB custom configuration TestDB or DevDB
    copy:
      src: "{{ item }}"
      dest: /etc/mysql/mariadb.conf.d/
      owner: root
      group: root
      mode: u=rw,g=r,o=r
    with_items:
      - "files/mariaconfigfiles/z90-vn.cnf"
      - "files/mariaconfigfiles/z92-testing_dev.cnf"
    notify: restart-mariadb

  - name: Set Mariabackup files for TestDB or DevDB
    copy:
      src: "{{ item.src }}"
      dest: "{{ item.dest }}"
      owner: root
      group: root
      mode: "{{ item.mode }}"
    loop: "{{ mariabackup_test_dev_files }}"

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

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

- 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: Ensure required custom and Mariabackup files are copied to their destinations and root scripts
  copy:
    src: "{{ item.src }}"
    dest: "{{ item.dest }}"
    owner: root
    group: root
    mode: "{{ item.mode }}"
  loop: "{{ required_files_and_mariabackup_files_and_root_scripts }}"
  notify: reload-systemd

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