By installing the DRBD software for replicating data and a cluster manager such as “Pacemaker” to automate fail-overs during outages, LINBIT provides high availability clusters.
DRBD ships with seamless integration to Pacemaker. Allowing Pacemaker to start, stop, promote and demote DRBD. With the fence-peer mechanism, DRBD utilizes Pacemaker’s CIB to help avoid split-brain situations.
Last, but not least, we’d like to note that using Pacemaker cluster manager is not a requirement for HA, due to DRBD’s new auto-promote feature. DRBD version 9.0 allows you to arbirtarily use other cluster managers, as long as those cluster managers can mount a file system on a shared storage device. This is perfect for OEM and ISVs who develop in-house cluster managers.