AlertManager and Prometheus are set to 1 replica only and cannot be changed in RHOCP 4

Solution Verified - Updated -

Issue

  • Per documentation default Prometheus is supposed to have 2 replicas and AlertManager 3, until RHOCP 4.9 & Post 4.10 Prometheus and Alertmanager both have 2 replica each, but the same does not happen in the cluster.
  • Scaling Prometheus replicas from 1 to 2 gets overridden by Operator.
  • A cluster was originally installed with just 1 worker after adding more nodes Prometheus and Thanos still have one replica.
  • Is it possible to change the infrastructureTopology from SingleReplica to HighlyAvailable?

Environment

  • Red Hat OpenShift Container Platform (RHOCP)
    • 4

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