Warning -

Due to a change in the SCC, on OpenShift clusters running version 6.2.12 or earlier upgrading to version 6.2.18 or later, where node:1 is not the master node, the upgrade might get stuck.

For more info and steps to prevent this issue, see upgrade a Redis Enterprise cluster (REC).

On clusters with more than 9 REC nodes, a Kubernetes upgrade can render the Redis cluster unresponsive in some cases. A fix is available in the 6.4.2-5 release. Upgrade your Redis cluster to 6.4.2-5 before upgrading your Kubernetes cluster.
Version (Release date)  Major changes
6.4.2-5 (April 2023) The Redis Enterprise K8s 6.4.2-5 is a maintenance release for version 6.4.2-4.
6.4.2-4 (March 2023) The Redis Enterprise K8s 6.4.2-4 release supports Redis Enterprise Software 6.4.2 and contains new features and feature improvements.