trainings/ansible/training/lessons/4-roles.md

Roles

Introduction

Roles in ansible are composed of multiples tasks that are executed together in order to configure a piece of software. Usually, roles are included by playbooks. The nice thing with roles is that they can be reused at different places, and thus it avoid copy/pasting of tasks. Moreover, roles can take variables as input, so the tasks in the roles can do various things based on input parameters.

Build your first role

In the previous lession, you built a playbook with tasks only. Your job now will be to create 2 roles:

• one role for all tasks related to deploying the flask application
• one role for all tasks related to deploying nginx as a proxy
  • for this one, you must also use some variables as input parameters for both ports (80 and 8080 in the previous lessons)

Cleanup

Once you're done, destroy the demo docker:

docker stop demo