CSI Driver and Volume Snapshots
This tutorial explains how to set up the CSI Hostpath Driver in minikube and create volume snapshots.
- latest version of minikube
Support for volume snapshots in minikube is provided through the
volumesnapshots addon. This addon provisions the required
CRDs and deploys the Volume Snapshot Controller. It is disabled by default.
Furthermore, the default storage provider in minikube does not implement the CSI interface and thus is NOT capable of creating/handling
volume snapshots. For that, you must first deploy a CSI driver. To make this step easy, minikube offers the
which deploys the CSI Hostpath Driver. This addon is disabled
by default as well.
Thus, to utilize the volume snapshots functionality, you must:
1) enable the
volumesnapshots addon AND
2a) either enable the
csi-hostpth-driver addon OR
2b) deploy your own CSI driver
You can enable/disable either of the above-mentioned addons using
minikube addons enable [ADDON_NAME] minikube addons disable [ADDON_NAME]
csi-hostpath-driver addon deploys its required resources into the
kube-system namespace and sets up a dedicated
storage class called
csi-hostpath-sc that you need to reference in your PVCs. The driver itself is created under the
hostpath.csi.k8s.io. Use this wherever necessary (e.g. snapshot class definitions).
Once both addons are enabled, you can create persistent volumes and snapshots using standard ways (for a quick test of
volume snapshots, you can find some example yaml files along with a step-by-step here).
The driver stores all persistent volumes in the
/var/lib/csi-hostpath-data/ directory of minikube’s host.