Lab 9 - Solution¶

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

# 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

# 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

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

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

ansible-playbook pip.yml

Commit your changes¶

• add all files to your git repo and commit it

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