block.yml

---
# Execute `ansible-playbook server.yml --tags mariadb` first.
- name: Backup dos bancos de dados
  hosts: dbservers
  become: true
  become_user: root
  vars:
    backup_user: vagrant
  tasks:
    - name: Realiza o backup dos bancos de dados
      tags: backup
      block:
        - name: Gera o arquivo de backup
          ansible.builtin.command: sh -c 'mariadb-dump --all-databases > /tmp/datadump.sql'

        - name: Garante que o diretório de backup exista no servidor de armazenamento (NAS)
          ansible.builtin.file:
            path: /backup
            state: directory
            owner: "{{ backup_user }}"
            mode: '0755'
          delegate_to: nas.example.net

        - name: Copia o backup para o NAS
          ansible.builtin.command: scp /tmp/datadump.sql nas.example.net:/backup/
          become: true
          become_user: "{{ backup_user }}"

      rescue:
        - name: Informa que houve erro durante o backup
          ansible.builtin.debug:
            msg: "Falha no backup"

      always:
        - name: Apaga o arquivo de backup
          ansible.builtin.file:
            path: /tmp/datadump.sql
            state: absent