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kubernetesamazon-ekseksctl

eksctl apply cluster changes after create

I've created a cluster using

eksctl create cluster -f mycluster.yaml

everything is running but now I would want to add cluster autoscaler. There does not seem to be an option to specify this for the eksctl update cluster command.

When creating a new cluster I can add the --asg-access flag, is there an option to enable ASG support for an existing cluster via eksctl?

Solution

  • The --asg-access flag only adds relevant iam policy and labels to a node group. You can do that by creating a new node group with the autoscaler option set as true

    nodeGroup:
  iam:
    withAddonPolicies:
      autoScaler: true

    and the labels as mentioned here

    Then you need to install the autoscaler itself

    Note:

    You won't be able to edit your current nodeGroup, so you will have to add a new one first and then delete your current one. (https://eksctl.io/usage/managing-nodegroups/#nodegroup-immutability)