The procedure below can be used in case Storage Class used supports volume expansion, which you can check with:
k get storageclass $STORAGE_CLASS_NAME -o yaml | grep allowVolumeExpansion
If above command returns true, you can proceed with editing each PVC and increasing the amount of storage under spec.resources.resources.requests.storage.
Once this is done, verify that every pod has updated the amount of storage it has by running df -h. If some pod did not automatically pick up the change, restart it.
Next thing we need to do is change the K8S StatefulSetK8S StatefulSet
StatefulSet is an object that manages a set of [[K8S Pod]]s and provides guarantees on their ordering and uniqueness.
It is pretty similar to [[K8S Deployment]], but has a few important difference... and update the amount of storage it requests inside its volumeClaimTemplate to the same number we added to our PVCs. To do this we need to:
k get sts $STS_NAME -o yaml > /tmp/my-sts.yaml- update the
volumeClaimTemplateinside/tmp/my-sts.yaml - delete the existing sts without deleting its pods by running
k delete sts $STS_NAME --cascade=orphan- don't forget
--cascade=orphanor your day will be ruined
- don't forget
- recreate the sts with new volume size by running
k apply -f /tmp/my-sts.yaml
Status: #💡