PCSD web UI Manage Clusters screen reports "Unable to connect to the cluster. Request timeout."

Solution In Progress - Updated -

Issue

  • When I check the box next to a cluster on the Manage Clusters screen of the PCSD web UI, I see the error "Unable to connect to the cluster. Request timeout." Each node shows a status of unknown and a quorum value of unknown.

Environment

  • Red Hat Enterprise Linux 7 or 8 (with the High Availability Add-on)
  • Typically, a large number of cluster nodes

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