Koublad is a small daemon which runs on two different servers (nodes) to handle high availability on a master/slave cluster, and performs failover actions if needed.
Each instance monitors UDP pings to detect that the other node is alive. If it's not the case, the instance can ping a third party to check its connectivity (sort of a dummy quorum-based implementation).
Lionel Nicolas
Failover Manager is made available under the terms of the GPLv3.
Copyright 2014 Lionel Nicolas lionel.nicolas@nividic.org