Chapter 23. Configuring Persistent Volume Claim Protection
23.1. Overview
OpenShift Container Platform can be configured to have the persistent volume claim (PVC) protection feature enabled. This feature ensures that PVCs in active use by a pod are not removed from the system, as this may result in data loss.
PVC protection is an alpha feature and may change in a future release of OpenShift Container Platform.
23.1.1. Enable PVC Protection
To enable the PVCProtection feature gate on all masters and nodes:
Edit or create the master configuration file on all masters (/etc/origin/master/master-config.yaml by default):
-
Add
PVCProtection=trueunder theapiServerArgumentsandcontrollerArgumentssections. Add
PVCProtectionadmission plugin configuration under theadmissionConfigsection.admissionConfig: pluginConfig: PVCProtection: configuration: apiVersion: v1 disable: false kind: DefaultAdmissionConfig ... kubernetesMasterConfig: ... apiServerArguments: feature-gates: - PVCProtection=true ... controllerArguments: feature-gates: - PVCProtection=true ...
-
Add
On all nodes, edit or create the node configuration file (/etc/origin/node/node-config.yaml by default), and add the
PVCProtection=truefeature gate underkubeletArguments:kubeletArguments: feature-gates: - PVCProtection=true
- On all masters and nodes, restart OpenShift Container Platform for the changes to take effect.
