Lab 9 - Solution
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Mandatory
=========

Installation of a ansible-galaxy role
-------------------------------------
* Have a look at https://galaxy.ansible.com/pstauffer/epel
* Define your roles directory in the ``ansible.cfg`` in the ``[defaults]`` section with ``roles_path``
* Install the galaxy role ``pstauffer.epel``
* Check out the installed role ``roles/pstauffer.epel``

.. code-block:: bash

    # define the roles_path
    vi ansible.cfg
    # file: ansible.cfg
    roles_path = roles

    # install the role
    ansible-galaxy install pstauffer.epel

    # verify the installation
    ansible-galaxy list
    - pstauffer.epel, master

    # have a look at the new role
    cat roles/pstauffer.epel/tasks/main.yml
    cat roles/pstauffer.epel/defaults/main.yml


* Create a simple playbook ``epel.yml`` to run the ``EPEL`` role on your ``web2.<firstname>.lab`` server
* Run the playbook

.. code-block:: yaml

    # file: epel.yml
    ---
    - hosts: web2.pascal.lab
      roles:
        - pstauffer.epel

    # run playbook
    ansible-playbook epel.yml


Python-Pip Role for Debian and RedHat
-------------------------------------
* Create / Edit the ``python-pip`` role
* The role should install the ``python-pip`` package

.. code-block:: yaml

    mkdir -p roles/python-pip/tasks

    # file: roles/python-pip/tasks/main.yml
	---
	- name: install python-pip
	  package:
	    name: python-pip
	    state: present

* on RedHat is EPEL needed to install ``python-pip``
* create the ``meta`` directory in the ``python-pip`` role
* create a role dependency on the installed ``pstauffer.epel`` role in ``meta/main.yml``
* the dependency should only run on the ``ansible_os_family`` **RedHat**
* Create a playbook ``pip.yml`` to run the role ``python-pip`` on the ``web`` hostgroup
* Run the playbook

.. hint::

    ``pstauffer.epel`` should only run on RedHat.
    -> Use ``when:`` and ``ansible_os_family`` in the dependencies.

.. code-block:: yaml

    mkdir roles/python-pip/meta

    # file: roles/python-pip/meta/main.yml
    ---
    dependencies:
      - role: pstauffer.epel
        when: ansible_os_family == "RedHat"

    # playbook file: pip.yml
    ---
    - hosts: web
      roles:
        - python-pip

.. code-block:: bash

    ansible-playbook pip.yml


Commit your changes
-------------------
* add all files to your git repo and commit it

.. code-block:: bash

    git status
    git add roles/*
    git commit -m 'lab 9'