Cordon a Node

Overview

Cordoning a node marks or taints the node as unschedulable. This prevents the scheduler from deploying new resources on that node. However, the resources that were deployed prior to cordoning off the node will remain intact.

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

Cordon a Node

To add a label and cordon a node, execute: Command

kubectl-mayastor cordon node <node_name> <label>

To get the list of cordoned nodes, execute:

Command

kubectl-mayastor get cordon nodes

To view the labels associated with a cordoned node, execute: Command

kubectl-mayastor get cordon node <node_name>

Uncordon a Node

To make a node schedulable again, execute: Command

kubectl-mayastor uncordon node <node_name> <label>

The above command allows the Kubernetes scheduler to deploy resources on the node.