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    LFS 258 - Lab 3.3 - Exercise 1 - Node' name

    Posts: 4
    in LFS258 Class Forum

    The name of my nodes are IP Address. Did I do something wrong? Is it possible to change it to cp and worker?

    ubuntu@ip-172-31-54-32:~$ kubectl get node
    NAME STATUS ROLES AGE VERSION
    ip-172-31-49-16 Ready 4h9m v1.27.1
    ip-172-31-54-32 Ready control-plane 5d23h v1.27.1

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    Answers

    • Posts: 3

      Hello @jordanofried,

      I think the node name is the same of hostname. I think you didn't change the hostname before the installation.

      Regards

    • Posts: 64

      There is no command to rename the node name...

      If you want to change the names then you will have to delete the node, reset the cluster and bootsrap again and join the worker nodes

      1. kubeadm reset
      2. follow the instruction from the reset output to clean up .kube config file
      3. hostnamectl set-hostname
    • Posts: 2

      Alternatively to changing the hostname (some cloud providers may be picky about it), you can pass the argument --node-name [name you want] to both kubeadm init/kubeadm join to set a custom node name.

    • Posts: 2,434

      Hi @jordanofried,

      The EC2 hostname is derived from the instance private IP address, and this should not cause any issues with the lab exercises.

      Regards,
      -Chris

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