Cluster Operator image-registry is in degraded state

Issue

• Prometheus AlertManager is firing below alert:

Labels
alertname = ClusterOperatorDown
endpoint = metrics
instance = 10.24.205.10:9099
job = cluster-version-operator
name = image-registry
namespace = openshift-cluster-version
pod = cluster-version-operator-8456b67599-dqpwq
prometheus = openshift-monitoring/k8s
service = cluster-version-operator
severity = critical
version = 4.6.8
Annotations
message = Cluster operator image-registry has not been available for 10 minutes. Operator may be down or disabled, cluster will not be kept up to date and upgrades will not be possible.

• One of the AWS S3 endpoints the bucket-name.s3.dualstack.aws-region.com is giving an error of HTTP/503 service unavailable.