DRBD Reactor
DRBD Reactor is a daemon that monitors DRBD® events and reacts to them. DRBD Reactor has various uses, from monitoring DRBD resources and metrics, to creating failover clusters, to providing highly available services more easily than by using a complex cluster resource manager such as Pacemaker.
Configuring the DRBD Reactor Promoter Plugin Freeze Feature
Editing and Updating a DRBD Reactor Promoter Plugin Resource Configuration