DevOps Classroom Series – 07/Oct/2021

Ansible Configuration

• The configuration done so far is represented as shown below
• Lets create an inventory file with the Node1 details. Create a file called as hosts with the following content

172.31.17.152

• To check the connectivity for ansible control node with Node which internally checks the connectivity and ssh login ansible has a special command

ansible -i <inventory file path> -m ping --ask-pass all

• So lets execute this command on control node
• Now lets add one more entry into the inventory

172.31.17.152
localhost

• Now entering password every time might not be good option for automating deployments, so lets try to use key based authentication
• To Create a key based authentication b/w ansible control node and nodes
  • Create a key pair in Ansible control node

  ssh-keygen
  

  
  • Copy the public key to the node(s) from ansible control node

  ssh-copy-id <username>@<ipaddress>
  

  
  • Now lets try to login from ansible control node to node just by using ip address
• Now lets try to ansible connectivity check without ask password

ansible -i hosts -m ping all

• Now lets try to copy keys to localhost

• Setup done so far

• Now lets add the new centos 7 node and configure it to the ansible control node

  • for steps view recording

• Configuration overview

• Exercise:

  • YAML & JSON Tutorial Refer Here