Check manual page of pvecm_nodes
Proxmox Virtual Environment: Node Status
This check monitors the states of the nodes of a
Promox Virtual Environment cluster setup. To make
this check work 'pvecm' command and the linux agent
check_mk_agent.linux must be installed.
The check is CRIT if the node is known to the cluster
but disallowed access to it. It is WARN if the node
is not a member of the cluster otherwise OK.
The node name.
One service per node is created.