The AvailabilityChainer enables establishing connection with multiple target addresses and using information from the Availability Checker daemon. The Availability Checker daemon monitors the servers if they are up or down, and based on that information the AvailabilityChainer can automatically target adresses which are in up state. The AvailabilityChainer connects to target hosts in the order they have been specified. Use the AvailabilityChainer together with the DirectedRouter.

Figure 6.40. Configuring AvailabilityChainer

To enable the AvailabilityChainer, the Availability Checker component has to be activated and configured. For more information on the Availability Checker component, see Section 12.7, Availability Checker.