Upgrading a cluster

Adding nodes

Nodes may be added to a cluster by running the StorageOS container with JOIN set to the IP addresses of one of the nodes.

Upgrading StorageOS

Upgrades can be performed by restarting the StorageOS node container with the new version. You can disable scheduling new volumes on the node with storageos node cordon before upgrading the node.

Removing nodes

It is currently not possible for a node to leave the cluster completely. If the StorageOS container is stopped and/or removed from a node then the node will be detected as failed and it will be marked offline, but there is no way to remove the node from the list. storageos node rm will be added before GA and storageos node drain to move volumes to other nodes prior to maintenance or removing the node from the cluster.