Ansible Essential Training

This repository holds my example files for LinkedIn's Ansible Essential Training. Since example files from LinkedIn are Copyright protected, I would recommend download it and uncompress it under [Exercise Files](Exercise Files) directory to keep reference on comments.

Lab

To save time, I am shiping the laboratory out-of-the-box with Vagrant and VirtualBox (if you don't have it, install it first). Also if you're running a Linux box, I would advice install apt-proxy-ng, this will create a service on your host operating system that will cache every package installed by your guest machines (look at Vagrantfile to uncomment line that enable this apt repository). There is some tweaks in Vagrantfile needed to create the magic:

• SSH key authentication are done with vagrant insecure keys. Vagrantfile has config.ssh.insert_key=false which injects Vagrant's general public key into guess machines. Also>, Inventory files have instructions to use vagrant account (ansible_ssh_user in ini style, and ansible_user in yml style) and ~/.vagrant.d/insecure_private_key as private key (ansible_ssh_private_key_file in ini style, and ansible_private_key_file in yml file)

• To avoid unknow host key behavior on first connect, it is configured "-o StrictHostKeyChecking=no" in inventory files (inventory.ini and inventory.yml)

To boot up this laboratory the following command should be executed from same folder where reside files:

  vagrant up

Just in case you machines are not provisioned, an extra step could be executed:

  vagrant provision

A quick check could be done to be sure about ansible will run on virtual machines:

  ansible -m ping -i inventory.yml all

This test all ansible targets on an inventory file are reachable. The same is done in [Exercise Files/ad-hoc.sh] except this script only test web01 node.

1-Setup

Files located at [Exercise Files/1-Setup](Exercise Files/1-Setup) are used to setup the machines. There is a main task to allow run next examples: installation of packet-python and netaddr, this is done through pip module in [Exercise Files/1-Setup/local.yml](Exercise Files/1-Setup/local.yml).

The laboratory shipped on this repository is using Debian official vagrant boxes which doesn't include pip installed by default, I fixed this in my 01-Setup.yml, adding a previous task in which python-pip is installed using apt module.

To execute this exercise over all nodes execute

  ansible-playbook -i inventory.ini 01-Setup.yml