OpenShift Node Operations

External

• https://docs.openshift.com/container-platform/3.5/admin_guide/manage_nodes.html

Internal

• OpenShift Operations

Overview

A node is a Linux container host. More details about nodes are available here:

OpenShift Concepts - Nodes

Getting Information about a Node

oc get nodes
oc get node <node-name>
oc describe node/<node-name>

Get Labels Applied to a Node

Get Labels Applied to a Node

Update Labels on a Node

TODO: https://docs.openshift.com/container-platform/3.5/admin_guide/manage_nodes.html#updating-labels-on-nodes

Other Procedures

• Make a node schedulable/unschedulable

Adding a New Node

New nodes can be added with the scaleup.yml playbook. The playbook generates and distributes new certificates for the new hosts, then runs the configuration playbook on the new hosts only.

https://docs.openshift.com/container-platform/3.5/install_config/adding_hosts_to_existing_cluster.html#adding-nodes-advanced

Removing a Node

TODO: https://docs.openshift.com/container-platform/3.5/admin_guide/manage_nodes.html#deleting-nodes