This repo provides a basic introduction to ansible

The target audience are developers/admins that wish to automate their infrastructure.

In this lab we will create a vagrant cluster of 1 master-node with ansible installed and a number of worker-nodes

We will also create ansible playbook consisting of multiple roles deploying multiple applications

Make sure you have virtualbox installed on your machine (tested on versions >= 5.1.26r117224).

Make sure you have vagrant installed (tested on 1.8 and 2.0).

Note: check if the hostmanager plug in is installed using:

vagrant plugin install vagrant-hostmanager

Even if it is not installed, the vagrant up command below will install it for you.

Start by cloning this repo:

git clone git@github.com:akanso/lab-ansible.git

Then, simply move to the directory where the Vagrantfile resides and execute a vagrant up command:

cd lab-ansible
vagrant up

This should take a few minutes, after which one master and 2 worker nodes will be provisoned

vagrant status

master-node               running (virtualbox)
worker-node1              running (virtualbox)
worker-node2              running (virtualbox)

you can ssh into the master-node and check the cluster status:

vagrant ssh master-node
cd /vagrant
ansible all -i hosts -m ping

you should see a response from both nodes

worker-node1 | SUCCESS => {
    "changed": false,
    "ping": "pong"
}
worker-node2 | SUCCESS => {
    "changed": false,
    "ping": "pong"
}

The configuration file vg_config.rb

You can change the values of all the variables in this file, e.g.:

cat vg_config.rb
$worker_vm_count=2
$worker_vm_memory=1536
$worker_vm_cpu=1
...

After the change, you can re-run vagrant up from you workstation