WARNING You cannot currently use these services and virtual servers in the same setup, if you do, any configuration you had for virtual servers will be lost. You must have at least a 2 node cluster (a primary and backup) in order to use these failover services. All nodes must be identically configured Linux systems.
Failover services provide the most basic form of fault recovery. If any of the services on the active node fail, all of the services will be shutdown and restarted on a backup node. Services defined here will automatically be started & stopped by LVS, so a backup node is considered a "warm" standby. This is due to a technical restriction that a service can only be operational on one node at a time, otherwise it may fail to bind to a virtual IP address that does not yet exist on that system or cause a networking conflict with the active service. The commands provided for "Initiation command" and "Stop command" must work the same for all nodes. Multiple services can be defined.