You can upgrade an already running Cluster via the command octops upgrade as shown here.

Features

Introducing the octops uninstall command to uninstall the Octelium Cluster
Introducing the octops upgrade --wait to wait for the Cluster upgrade, octops ugrade --check to check whether the Cluster version can be upgrded, octops upgrade --check-client to check whether the installed Octelium CLIs can be upgraded

Improvements