Ansible Multiple Handlers: Run Handlers in Sequence (listen, notify) — Video Tutorial

How to run multiple Ansible handlers from a single task. Use listen groups and multiple notify entries to chain handler execution with practical examples.

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Two ways to run multiple Ansible handlers
What is an Ansible handler?
Links
Demo
Solution 1
code
execution
Solution 2
code
execution

Two ways to run multiple Ansible handlers 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. Links - https://docs.ansible.com/ansible/latest/playbook_guide/playbooks_handlers.html 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 HANDLER [message 2] *****************

About this tutorial

Author: Luca Berton
Difficulty: Beginner
Read time: 4 min
Category: installation

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