bind9-ansible-role/tasks/05-rollback.yml

# Rollback changes on error

- name: Rollback /etc/named.conf.local
  become: true
  copy: 
    remote_src: true
    src: /etc/bind/named.conf.local.bak
    dest: /etc/bind/named.conf.local
    owner: bind
    group: bind
    mode: 0644

- name: Delete /etc/named.conf.local.bak
  become: true
  file:
    path: /etc/named.conf.local.bak
    state: absent

- name: Delete all changed zone files
  become: true
  shell: "rm $(find {{bind9_zone_dir}} -not -name '*.bak' -type f)"
  changed_when: false

- name: List all backed up zone files
  become: true
  shell: "find {{bind9_zone_dir}} -name '*.bak' -type f -exec basename {} \\;"
  changed_when: false
  register: backup_zones_result

- name: Restore backed up zone files
  become: true
  shell: "mv {{bind9_zone_dir}}/{{item}}.bak {{bind9_zone_dir}}/{{item}}"
  with_items: "{{backup_zones_result.stdout_lines}}"