Install Ansible (Automation Tool for IT Management) on CentOS 7

In this article, I will show you how to install ‘Ansible’ on RHEL/CentOS 7/6. Like other configuration management tools like puppet, chef and CFEngine, server software is installed on one machine and client machines are managed through the agent. Wherein Ansible, the nodes are managed by controlling machine (Ansible server) over SSH, so there won’t be any agent running on node machines.

Base Requirements    :  

1. Controlling Machine , 
2. Client Nodes , 
3. Required Packages

Software Prerequisites      :  

1. Operating System: RHEL/CentOS/Fedora and Ubuntu/Debian/Linux Mint
2. Jinja2: A modern, fast and easy to use stand-alone template engine for Python.
3. PyYAML: A YAML parser and emitter for the Python programming language.
4. parmiko: A native Python SSHv2 channel library.
5. httplib2: A comprehensive HTTP client library.
6. sshpass: A non-interactive ssh password authentication.

Note: Use yum for installation because it will install all dependencies automatically.

My Controlling Machine and Nodes   : 

• 192.168.87.145    server.gekvplabs.com    server
• 192.168.87.146    node1.gekvplabs.com    node1    
• 192.168.87.147    node2.gekvplabs.com    node2

Installation of  Ansible on On RHEL/CentOS :

1.  Run yum update  for updating all existing packages
1. yum update -y
2.  Install EPEL repo 
1. yum install epel-release
3.  After configuring epel repository, you can install Ansible using following command
1. sudo yum install ansible -y
4. After installed successfully, you can verify the version by executing below command.
1. ansible --version