You should stop OES Cluster Services when applying maintenance patches for OES Cluster Services.
Log in to the node as the root user, then open a terminal console.
Use the cluster leave command to remove the node from the cluster.
Stop OES Cluster Services by entering
rcnovell-ncs stop
or
systemctl stop novell-ncs.service
Apply the latest patches for OES and OES Cluster Services.
Start OES Cluster Services by entering
rcnovell-ncs start
or
systemctl start novell-ncs.service