In this article, Let’s learn the steps of installing Ansible on Centos. If you want to learn about Ansible Fundamentals and Architecture, please refer to this article.
Table of Contents
Installing Ansible on Centos
Update the system with the latest packages
sudo yum -y update
Install EPEL (Extra Packages for Enterprise Linux) repository.
sudo yum -y install epel-repo
Update the repository cache
sudo yum -y update
Install Ansible
sudo yum -y installansible
Check Ansible Version
ansible --version
Setup users for target nodes
Create a user to be used by Ansible for connecting to target nodes. These users need to be created in all the target nodes which we want to manage.
useradd -m ansible
Provide sudo access to the user.
echo "ansible ALL=(ALL) NOPASSWD: ALL" /etc/sudoers
Setup a password for Ansible user
passwd <username>
Generate ssh key for ansible user on the Control Node.
ssh-keygen
Copy ssh ID to all the target nodes.
ssh-copy-id target_node
Check if we can connect to Target Nodes from Control Node.
ssh ansible@target_node
👏👏 Congratulations! 👏👏
You have installed Ansible and set it up to connect to target nodes. 🙌
Now, Let’s check if Ansible can connect to target nodes:
Create an inventory file called hosts and add below lines to it
<target_node_ip_or_hostname> ansible_user=ansible
<target_node_ip_or_hostname> ansible_user=ansible
Run ansible ping command and observe the output
ansible all -i hosts -m "ping"