Chapter 26. Configuring ephemeral storage

Edit or create the master configuration file on all masters, /etc/origin/master/master-config.yaml by default, and add LocalStorageCapacityIsolation=true in the apiServerArguments and controllerArguments sections:

apiServerArguments:
   feature-gates:
   - LocalStorageCapacityIsolation=true
...

 controllerArguments:
   feature-gates:
   - LocalStorageCapacityIsolation=true
...

Edit the ConfigMap for all nodes to enable the LocalStorageCapacityIsolation on the command line. You can identify the ConfigMaps that need to be edited as follows:

$ oc get cm -n openshift-node
NAME                  DATA      AGE
node-config-compute   1         52m
node-config-infra     1         52m
node-config-master    1         52m

For each of these maps, node-config-compute, node-config-infra, and node-config-master, you need to add the feature gate:

oc edit cm node-config-master -n openshift-node

If there is already a feature-gates: declaration, add the following text to the list of feature gates:

,LocalStorageCapacityIsolation=true

If there is no feature-gates: declaration, add the following section:

  feature-gates:
  - LocalStorageCapacityIsolation=true