Document URL: https://docs.openshift.com/container-platform/3.11/dev_guide/expanding_persistent_volumes.html#enabling_expansion_pvc Describe the issue: feature-gates ExpandPersistentVolumes=true needs both under apiServerArguments and controllerArguments but the example only shows apiServerArguments one. > # cat /etc/origin/master/master-config.yaml > ... > kubernetesMasterConfig: > apiServerArguments: > ... > feature-gates: > - ExpandPersistentVolumes=true > > # master-restart api > # master-restart controllers Suggestions for improvement: > # cat /etc/origin/master/master-config.yaml > ... > kubernetesMasterConfig: > apiServerArguments: > ... > feature-gates: > - ExpandPersistentVolumes=true > controllerArguments: > ... > feature-gates: > - ExpandPersistentVolumes=true > > # master-restart api > # master-restart controllers Additional information: