Two Ways to Run Multiple Ansible Handlers

Discover two methods to trigger multiple Ansible handlers based on changed status in playbooks, enhancing task execution efficiency.

How to execute two Ansible handlers on a changed status of Ansible Playbook.

What is an Ansible handler?

> Handler runs tasks on change.

Handlers execute some tasks only when the previous task returns a changed status. If not necessary, they don't execute.

Demo

Let's jump into two real-life examples of how to run multiple Ansible handlers.

First of all, we need a task changed status. The simplest Ansible module returning a "changed" status is the command module with a Linux command, like "uptime".

Let's suppose we would like to execute two handlers on the screen, for example, two messages on the screen.

Solution 1

code

two-1.yml

``yaml


---
name: handler Playbook
  hosts: all
  tasks:
    - name: Test connection
      ansible.builtin.command: "uptime"
      notify: message

  handlers:
    - name: message 1
      ansible.builtin.debug:
        msg: message 1
      listen: message

    - name: message 2
      ansible.builtin.debug:
        msg: message 2
      listen: message



inventory

`bash


localhost ansible_connection=local



execution

`bash


$ ansible-playbook -i inventory two-1.yml

PLAY [handler Playbook] *

TASK [Gathering Facts] 
ok: [localhost]

TASK [Test connection] 
changed: [localhost]

RUNNING HANDLER [message 1] *
ok: [localhost] => {
    "msg": "message 1"
}

RUNNING HANDLER [message 2] *
ok: [localhost] => {
    "msg": "message 2"
}

PLAY RECAP **
localhost                  : ok=4    changed=1    unreachable=0    failed=0    skipped=0    rescued=0    ignored=0



Solution 2

code

two-2.yml

`yaml


---
name: handler Playbook
  hosts: all
  tasks:
    - name: Test connection
      ansible.builtin.command: "uptime"
      notify:
        - message 1
        - message 2

  handlers:
    - name: message 1
      ansible.builtin.debug:
        msg: message 1

    - name: message 2
      ansible.builtin.debug:
        msg: message 2



execution

``bash

$ ansible-playbook -i inventory two-1.yml

PLAY [handler Playbook] *

TASK [Gathering Facts]

ok: [localhost]

TASK [Test connection]

changed: [localhost]

RUNNING HANDLER [message 1] *

ok: [localhost] => {

"msg": "message 1"

}

RUNNING HAND

Two Ways to Run Multiple Ansible Handlers - Ansible Playbook