DevOps Classroom Series – 28/Oct/2021

Setting up Nodes for Chef

• In the last session, we were able to install chef workstation & create an account in hosted chef server with starter kit downloaded.
• Now lets try to configure nodes.
• Lab Setup:

  • Creating a Ubuntu Node in AWS:

    • Refer Here to create an ec2 instance in AWS
    • EC2 instance created
    • To login into this ec2 instance the command would be ssh -i <path to pem> ubuntu@<publicip>
    • On this node we need to ensure chef-client which is agent to be installed. This process is called as bootstrapping
    • To bootstrap the node, when we install chef-workstation we get a application called as knife, we can use knife & starter kit to bootstrap the node
    • cd into the chef-repo (extracted from starter kit)
    • Refer Here for the knife bootstrap command
    • Login into hosted chef
    • Now lets try to build a command to bootstrap the node

    knife bootstrap '34.209.212.75' --connection-user 'ubuntu' --ssh-identity-file '.\chefnode.pem' --sudo --node-name 'ip-172-31-23-112.us-west-2.compute.internal'
    

    

    • Lets observe the hosted chef management console
    • Try form command line knife node list

  • Create a Centos 7 vm in Azure:

    • Refer Here for steps to create Azure VM
    • The ssh command for this node is ssh <username>@<ipaddress>
    • Now lets try to build the command to bootstrap the node

    knife bootstrap '20.106.244.250' --connection-user 'qtdevops' --connection-password 'motherindia@123' --sudo --use-sudo-password --node-name 'qtchefnode2' 
    

    

    • Management console
    • Execute knife node list
• Exercise: Try to bootstrap any linux node using knife