# Administrative functions for an Openshift cluster
oc adm
# Install a router or registry
oc adm router|registry
# Manage role/ SCC to user/group bindings, as well as additional policy administration
oc adm policy
# Run tests/validation against a cluster
oc adm diagnostics
# Unschedule/ schedule/ drain a node
oc adm cordon/uncordon/drain
# Manage groups
oc adm groups
# Show usage statistics of resources
oc adm top