oc login <cluster-url> -u <username>
oc projects # to list
oc project <name> # to select
oc status
oc logs <pod-name> -c <container-name> [-t,--tail=<n>] [-f,--follow]
oc logs <pod-name> --all-containers=true
# service logs
oc get services
oc logs svc/<service>
# oc get pods
oc exec -it <pod-name> <command>