reset_node.md

Resetting a node

In this lab you will reset a node in the Openshift Cluster.

Run the following command to mark the node as unschedulable:

$ oc adm manage-node --schedulable=false

Run the following command to shut down Docker and the atomic-openshift-node service:

$ systemctl stop docker atomic-openshift-node

Run the following command to remove the local volume directory:

$ rm -rf /var/lib/origin/openshift.local.volumes

Remove the /var/lib/docker directory:

$ rm -rf /var/lib/docker

Run the following command to reset the Docker storage:

$ docker-storage-setup --reset

Run the following command to recreate the Docker storage:

$ docker-storage-setup

Recreate the /var/lib/docker directory:

$ mkdir /var/lib/docker

Run the following command to restart Docker and the atomic-openshift-node service:

$ systemctl start docker atomic-openshift-node

Run the following command to mark the node as schedulable:

$ oc adm manage-node --schedulable=true