The following sections help you to solve problems related to high availability clusters.

• For a description of the possible statuses of the syslog-ng Store Box (SSB) cluster and its nodes, the DRBD data storage system, and the heartbeat interfaces (if configured), see Understanding SSB cluster statuses.

• To recover a cluster that has broken down, see Recovering SSB if both nodes broke down.

• To resolve a split-bran situation when the nodes of the cluster were simultaneously active for a time, see Recovering from a split brain situation.

• To replace a broken node with a new appliance, see Replacing a node in an SSB HA cluster.