套件： keepalived (1:1.1.20-1+squeeze1)
Failover and monitoring daemon for LVS clusters
keepalived is used for monitoring real servers within a Linux Virtual Server (LVS) cluster. keepalived can be configured to remove real servers from the cluster pool if it stops responding, as well as send a notification email to make the admin aware of the service failure.
In addition, keepalived implements an independent Virtual Router Redundancy Protocol (VRRPv2; see rfc2338 for additional info) framework for director failover.
You need a kernel >= 2.4.28 or >= 2.6.11 for keepalived. See README.Debian for more information.
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