Update the control plane configuration

Update the control plane machine set specification to modify control plane machine configuration and trigger automatic or manual replacements.

The Control Plane Machine Set Operator monitors the control plane machines and compares their configuration with the specification in the control plane machine set CR. When there is a discrepancy between the specification in the CR and the configuration of a control plane machine, the Operator marks that control plane machine for replacement.

Note

For more information about the parameters in the CR, see "Control plane machine set configuration".
Prerequisites

  • Your cluster has an activated and functioning Control Plane Machine Set Operator.

Procedure

  1. Edit your control plane machine set CR by running the following command:

    $ oc edit controlplanemachineset.machine.openshift.io cluster \
  -n openshift-machine-api

  2. Change the values of any fields that you want to update in your cluster configuration.

  3. Save your changes.

Next steps

  • For clusters that use the default RollingUpdate update strategy, the control plane machine set propagates changes to your control plane configuration automatically.

  • For clusters that are configured to use the OnDelete update strategy, you must replace your control plane machines manually.

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