biggsean/ansible-tutorial

Description

This is a ansible tutorial.

TAG: ADHOC

At this point there is a simple Vagrant file and a hosts file. The Vagrant box is Centos 7.2.

Note: You probabaly want to disable host key checking with ssh. See http://docs.ansible.com/ansible/intro_getting_started.html

TAG: PLAYBOOK-EXAMPLE

We add a group to the inventory file (hosts) and write a simple playbook. We also add a template file and an ansible.cfg.

Try running

vagrant up
ssh-agent bash
ssh-add .vagrant/machines/default/virtualbox/private_key
ansible all -i hosts -u vagrant -m ping
ansible all -i hosts -u vagrant -m yum -a "name=vim-enhanced state=present" --sudo
ansible all -i hosts -u vagrant -a "yum info vim-enhanced" --sudo

TAG: ROLES-EXAMPLE

Here we show some best practices and move tasks to a role.

• We added the ansible provisioner to the Vagrantfile and removed the original inventory file (hosts)
  • Vagrant will now create a inventory file and call ansible-playbook automatically
  • vagrant up will bring the machine up and run the provisioner once
  • vagrant provision will run ansible if the vm is already loaded
• We added roles and moved the ntp tasks and variables in to the appropriate files
• We added tags to the ntp role tasks
• We added an include statement in site.yml

Try running

vagrant up
# After the provisioner runs, you can run it again
vagrant provision

TAG: GALAXY-EXAMPLE

We removed the ntp role and put it in a public repo to share!

Try running:

mkdir galaxy-roles
ansible-galaxy install -r install_roles.yml
vagrant up
# or vagrant provision if the vm is still up

Requirements

This tutorial was written using:

• ansible 2.0.1.0
• vagrant 1.8.1
• VirtualBox 5.0.16