Is it possible to replace a control plane node in a bare metal cluster installed with Agent-based Installer?

Solution Unverified - Updated -

Issue

  • One of the control plane nodes is no longer working — either because it became NotReady, or due to physical hardware failure. The node is not recognized by the cluster anymore, and we want to replace it to restore full functionality.

  • There is a relevant document, 6.2.4. Replacing the unhealthy etcd member. However, this procedure seems to assume an IPI or UPI environment, and may not work for a bare metal cluster installed using the Agent-based Installer (ABI), especially in environments without Baseboard Management Controller(BMC).

  • Is there any officially supported method for this case?

Environment

  • Red Hat OpenShift Container Platform
    • 4
  • Agent-based Installer
  • Bare metal nodes
  • No BMC (Baseboard Management Controller)

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