Description:
No service cluster-logging-operator-metrics on logging 5.5

$ oc get svc
NAME TYPE CLUSTER-IP EXTERNAL-IP PORT(S) AGE
collector ClusterIP 172.30.243.34 <none> 24231/TCP,2112/TCP 7m22s
elasticsearch ClusterIP 172.30.132.91 <none> 9200/TCP 7m26s
elasticsearch-cluster ClusterIP 172.30.52.197 <none> 9300/TCP 7m26s
elasticsearch-metrics ClusterIP 172.30.173.15 <none> 60001/TCP 7m26s
kibana ClusterIP 172.30.201.201 <none> 443/TCP 7m24s

Additional info, the cluster-logging-operator metrics had been exposed

oc exec cluster-logging-operator-85c4bb5697-vtlvl – curl -s http://127.0.0.1:8686/metrics

1. HELP controller_runtime_active_workers Number of currently used workers per controller
2. TYPE controller_runtime_active_workers gauge
   controller_runtime_active_workers {controller="clusterlogforwarder"} 0
   controller_runtime_active_workers{controller="clusterlogging"} 0
   # HELP controller_runtime_max_concurrent_reconciles Maximum number of concurrent reconciles per controller
   # TYPE controller_runtime_max_concurrent_reconciles gauge
   controller_runtime_max_concurrent_reconciles{controller="clusterlogforwarder"}

   1
   controller_runtime_max_concurrent_reconciles

   {controller="clusterlogging"}

   1

3. HELP controller_runtime_reconcile_errors_total Total number of reconciliation errors per controller