Drain a Node

Overview

The node drain functionality marks the node as unschedulable and then gracefully moves all the volume targets off the drained node.

This feature is in line with the node drain functionality of Kubernetes.

Drain a Node

To start the drain operation, execute:

Command

kubectl-mayastor drain node <node_name> <label>

To get the list of nodes on which the drain operation has been performed, execute:

Command

kubectl-mayastor get drain nodes

Halt Drain

To halt the drain operation or to make the node schedulable again, execute:

Command

kubectl-mayastor uncordon node <node_name> <label>