Resizing the control plane node for a user cluster

You can resize the control-plane node of a Google Distributed Cloud user cluster to change its number of CPUs and amount of memory, for example, to support more worker nodes as your cluster grows. Because resizing re-creates the node, a user cluster with a single control-plane node might have a small amount of downtime.

You can't resize the control-plane node manually if you enable automatic node resizing.

To add or remove CPUs and memory in the control-plane node:

Console

  1. In the console, go to the Google Kubernetes Engine clusters overview page.

    Go to GKE clusters

  2. Select the Google Cloud project that the user cluster is in.

  3. In the list of clusters, click the cluster that you want to modify, and then click View details in the Details panel.

  4. Scroll down to the Control Plane section.

  5. Click Edit next to Control-plane node CPUs or Control-plane node memory, change the value, and click Done.

Command line

  1. Edit the user cluster configuration file. Change the masterNode.cpus and masterNode.memoryMB to the values you want.

    ...
masterNode:
   cpus: 4
   memoryMB: 8192
   # How many machines of this type to deploy
   replicas: 3
...

  2. Run this command to update the cluster:

    gkectl update cluster --kubeconfig ADMIN_CLUSTER_KUBECONFIG --config USER_CONFIG_FILE
    • Replace ADMIN_CLUSTER_KUBECONFIG with the path of your admin cluster kubeconfig file.
    • Replace USER_CONFIG_FILE with the path of your user cluster configuration file.