Local Path Provisioner provides a way for the Kubernetes users to utilize the local storage on each node.

How does it work?

For each custom resource LocalPathProvisioner, a corresponding StorageClass is created.

The allowed topology for StorageClass is calculated based on the list of nodeGroup names from the CR. The topology is used for scheduling Pods.

When a Pod orders a disk:

  • a HostPath PV is created

  • the Provisioner creates a local disk folder on the desired node along the path consisting of the path custom resource parameter, the PV name and the PVC name.

    Example of a path:

    /opt/local-path-provisioner/pvc-d9bd3878-f710-417b-a4b3-38811aa8aac1_d8-monitoring_prometheus-main-db-prometheus-main-0

Limitations

  • The disk size limit is not supported for the local path provisioned volumes.