Service handlers and error handlers

A task can notify if a change has been made, then a handler can be triggered.

Example:

• name: change_port
  • lineinfile: path=/etc/httpd/http.conf regexp=‘^port’ line=‘port=8080’
  • notify: Restart_Apache
• handlers:
  • name: Restart_Apache
    • service: name=apache2 status=restarted

Error management of tasks:

• To ignore a change status –> changed_when: false
  • For instance uname or service status
• Force a change status if a word is found –> changed_when: “’SUCCESS’ in cmd_output.stdout”
• Force error status if a word is found –>failed_when: “’FAIL’ in cmd_output.stdout”
• Ignore an error status –> ignore_errors: yes
  • Easy to test with command –> /bin/false