Description of problem:
There are 4 services that need to be checked for troubleshooting:

• quay-app.service
• quay-postgres.service
• quay-redis.service
• quay-pod.service

However, OMR 2.0 no longer deploys quay-postgres.service, so this entry is no longer needed and should be removed.

https://docs.redhat.com/en/documentation/openshift_container_platform/4.19/html/disconnected_environments/mirroring-in-disconnected-environments#mirror-registry-troubleshooting_installing-mirroring-creating-registry