Worker node expansion fails due to stale host entries in Assisted Service database

Solution Verified - Updated -

Issue

  • When attempting to expand a cluster by adding new worker nodes through RHACM Assisted Installer, the nodes fail to be added successfully. Some nodes remain stuck in discovery or installation phases and report hostname conflicts.

  • In the Agent CR status conditions, the following error may be observed:

- id: hostname-unique
  message: Hostname worker7.example.com is not unique in cluster
  status: failure

Environment

  • Red Hat Advanced Cluster Management (RHACM) 2.12

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