Can you explain what is meant by a role in Ansible and how it is used?

In Ansible, a role is a way to structure and reuse configurations and tasks. A role combines related tasks, files, templates, variables, and handlers into a separate directory with a specific structure.

Using roles allows:

• Organizing code into functional blocks.
• Reusing configurations across different playbooks.
• Simplifying maintenance and scaling of infrastructure.

Example of a role structure:

roles/
  myrole/
    tasks/
      main.yml
    handlers/
      main.yml
    templates/
      config.j2
    files/
      script.sh
    vars/
      main.yml

In a playbook, a role is included as follows:

- hosts: servers
  roles:
    - myrole

Thus, a role encapsulates all necessary elements for configuring a specific part of the system, making playbooks cleaner and easier to maintain.