How to retain Idempotency in Ansible while restarting HTTPD Service?

Challenging statement:

Restarting HTTPD Service is not idempotence in nature and also consume more resources to suggest a way to rectify this challenge in Ansible playbook.

• Whenever there is a change in the configuration file of httpd we have to restart the httpd service.
• So for this, we will write the restart keyword in our ansible playbook but there is a problem — if we didn't change anything in the conf file also the httpd service will restart.
• To solve this challenge we have to use the Handlers concept from Ansible.

HANDLERS:

• We want to restart the httpd service only when there is a change in a configuration file.
• If there is no change then we have to skip(shouldn't run) the restart of httpd service.
• For this, we have the handler module in Ansible.

Let's jump into our practical

• Configuration file for httpd

Venkateshsandupatla/apache-restart-using-ansible-handler

• Now we have to write a webpage for our apache server.

Venkateshsandupatla/apache-restart-using-ansible-handler

• Now we should write the playbook for our requirement
• https://github.com/Venkateshsandupatla/apache-restart-using-ansible-handler/blob/main/webserver.yml

• Now it’s time to run the playbook

ansible-playbook playbook.yml

• The first time it will run all the tasks because we changed our httpd configuration file
• Now let us run the playbook again, now there is no change in the configuration file so httpd service shouldn't restart
  Let's check?

• Here the restart task doesn't run!!!!!!!!

GITHUB REPO:

Venkateshsandupatla/apache-restart-using-ansible-handler

• Thank you everyone for reading!