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Change Kubernetes worker node machine type in place

This is derived from a GitHub issue for the IBM Cloud terraform provider. The request there is to make it possible to change the machine type of the worker nodes of a Kubernetes cluster.

It is not possible to change the machine type via terraform without destroying the Kubernetes cluster. A new API has to be added for this to be then exposed via terraform as far as I understood.

  • Ruben Burr
  • Mar 25 2019
  • Returned for specifics
  • Attach files
  • Ruben Burr commented
    20 Jun 06:43am

    It depends on the process of switching worker pools. If I can just change the machine type in the resource definition and the terraform provider automatically creates the new worker pool and then deletes the old one, perfect. I did not test this yet.

  • Admin
    Sai Vennam commented
    17 Jun 06:39pm

    The correct answer here is to create a new pool and delete the older pool, as the IKS team will not support changing the machine type in place. The flow to switch out worker pools is supported today. Does this satisfy the requirement?

  • Admin
    DAVE TROPEANO commented
    17 Jun 05:30pm

    reassigned to Sai Vennam

  • Admin
    DAVE TROPEANO commented
    28 Mar, 2019 01:53pm

    Ruben, thank you for the suggestion. The IKS team does feel this is within their scope. As indicated, we are working with you in the GH issue you opened toward a solution path. 

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