Installation

Adding Repository:

sudo apt-get update
sudo apt-get install software-properties-common
sudo apt-add-repository ppa:ansible/ansible

Installation:

sudo apt-get update
sudo apt-get install ansible

Prepare the Remote Host

Generate SSH Key on the Ansible Server:

ssh-keygen

Copy the keys to the Remote Server:

ssh-copy-id -i ~/.ssh/id_rsa.pub aman@10.100.8.103

Test the Connection using SSH Keys:

ssh aman@10.100.8.103

Edit Ansible Hosts File:

sudo nano /etc/ansible/hosts

Create a Host:

my_server ansible_ssh_host=10.100.8.103

Or Create a Group:

[my_web_servers]
host1 ansible_ssh_host=192.0.2.1
host2 ansible_ssh_host=192.0.2.2
host3 ansible_ssh_host=192.0.2.3

ansible -m ping all
ansible -m shell -a 'free -m' host1