🙏 Introduction:

In this blog, Today we will write a blog explanation for the Ansible Tutorial for DevOps Engineers

🎯Task: 1

Write a Blog explanation for the ansible video

• Create an EC2 instance

• Connect to your EC2 instance using SSH

• Add the Ansible PPA repository

• Update the package

• Install Ansible

• check the version of Ansible

• Launch three new EC2 instances with same private key as Ansible-master-node EC2 instance.

• Copy the private key to master server where Ansible is setup

• In master node where ansible is setup, create a new file at location /home/ubuntu/.ssh and paste private key to that file.

• SSH into Ansible server instances from master instance by using private key

sudo ssh -i /key-path ubuntu@public-ip-address

• Create an inventory file for Ansible that lists the IP addresses of the Ansible server

• Create a new folder named ansible, inside folder create hosts file which is inventory file for ansible. add the IP addresses of the servers inside hosts file.

[servers]
server1 ansible_host=34.218.229.216 
server2 ansible_host=54.200.111.227
server3 ansible_host=34.216.221.116

[all:vars]
ansible_python_interpreter=/usr/bin/python3

• To verify the inventory of hosts

ansible-inventory --list -y -i <inventory-file-path>

• Change the private key permission (ansible_key)

• Specify the private key file to use for authentication using the --private-key option when running the Ansible command

ansible -i <inventory_file> all -m ping --private-key=<path_to_private_key>

• Ansible command to check the free memory

ansible -i /home/ubuntu/ansible/hosts all -a "free -m" --private-key=/home/ubuntu/.ssh/ansible_key

• Ansible command to check uptime

ansible -i /home/ubuntu/ansible/hosts all -a "uptime" --private-key=/home/ubuntu/.ssh/ansible_key