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Event History
June 2026
Gold DR upgrade to 4.18
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Scheduled
## What is happening?
CHG0078373 CITZ - PROD - MCS GOLDDR - Pre-upgrade prep work for 4.18
CHG0078374 CITZ - PROD - MCS GOLDDR - Upgrade to 4.18
These changes represent the work involved to upgrade the Gold cluster from Openshift 4.16 to 4.18.
## When?
Prep will run Sunday June 14th 6am to 9am
Upgrade will run Monday June 15th to 19th 9am to 5pm each weekday.
## Will there be an impact on the Platform apps?
Prep will involve orphaned image data cleanup and defragmenting the ETCD database. Defragmenting ETCD could cause some latency and slowness but isn't expected to cause any breakage as each pod will be done individually with time to recover between operations. The hard prune will put the registry in read-only mode briefly while the pruner removes any orphaned images.
Upgrade will involve both an upgrade of the core of the cluster as well as draining/reboots of all nodes which will require pods to be drained onto other nodes. There may be some slowness for new pods coming up if it happens that a lot of new pods attempt to start on an empty node (just patched). We will announce daily when work for this will resume and be suspended at the end of each work day.
## Do I need to do anything?
Monitor your applications for disruptions. Well designed applications should be able to tolerate the pod restarts without issue.
Posted:
CHG0078343 CITZ MCS EMERALD - Power off GPU node to support VMware patching
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Resolved
Completed
Posted: