DevOps Classroomnotes 29/Dec/2022

Installing Ansible

• Fixing issue with Centos or any linux os
• Ansible can be installed in two ways
  • Package Managers
  • Python: Refer Here
• Python based installation

python3 --version
pip3 --version
python3 -m pip install --user ansible

Ansible deals with credentials

• Possible Credentials
  • Username and Password
  • Username and key
• Ansible when executing playbook logins to the node using credentials provided and takes help of the python installed on the node to get the job done
• Login into the node
  • SSH: This is used for linux and mac
  • Winrm: This is used for windows

Username and Password Authentication

• Overview
  
• Linux machines allow us to login using ssh protocol and configurations of ssh are present in /etc/ssh/sshd_config
  • The field PasswordAuthentication should be yes

sudo nano /etc/ssh/sshd_config
# Change PasswordAuthentication to yes
sudo systemctl restart sshd

• Create a user called as jenkins
  
• Lets make jenkins administrator

sudo visudo

* Lets ask not to prompt for password for jenkins user

* Do the same stuff for node 2

Note

• VI Practice: Refer Here