5.3.8. Class RoundRobinAvailabilityChainer -

5.3.8. Class RoundRobinAvailabilityChainer

This class is based on the AvailabilityChainer class.

Note
Use RoundRobinAvailabilityChainer if you want to connect to servers, the availability of which have been checked by the Availability Checker daemon monitoring them. Hosts which are in Up state are attempted to be connected. In addition to AvailabilityChainer, this class adds the capability to perform stateful load balance server connections among a set of IP addresses.

Example 5.14. A DirectedRouter using RoundRobinAvailabilityChainer
The following service definition uses a DirectedRouter class with two possible destination addresses. The firewall uses these destinations in a failover fashion, targeting the second address only if the first one is marked unavailable by the Availability Checker daemon. Service(name="intra_HTTP_inter", router=DirectedRouter(dest_addr=(SockAddrInet('192.168.55.55', 8080), SockAddrInet('192.168.55.56', 8080)), forge_addr=FALSE, forge_port=Z_PORT_ANY, overrideable=FALSE), chainer=RoundRobinAvailabilityChainer(protocol=ZD_PROTO_AUTO, timeout_connect=30000), max_instances=0, proxy_class=HttpProxy,)

Example 5.14. A DirectedRouter using RoundRobinAvailabilityChainer

The following service definition uses a DirectedRouter class with two possible destination addresses. The firewall uses these destinations in a failover fashion, targeting the second address only if the first one is marked unavailable by the Availability Checker daemon.

Service(name="intra_HTTP_inter", router=DirectedRouter(dest_addr=(SockAddrInet('192.168.55.55', 8080), SockAddrInet('192.168.55.56', 8080)), forge_addr=FALSE, forge_port=Z_PORT_ANY, overrideable=FALSE), chainer=RoundRobinAvailabilityChainer(protocol=ZD_PROTO_AUTO, timeout_connect=30000), max_instances=0, proxy_class=HttpProxy,)

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Zorp GPL 7 Reference Guide

5.3. Module Chainer

5.3.8. Class RoundRobinAvailabilityChainer