keepalived - 1:2.1.5-0.2+deb11u1 main

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.
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In addition, keepalived implements an independent Virtual Router
Redundancy Protocol (VRRPv2; see rfc2338 for additional info)
framework for director failover.
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You need a kernel >= 2.4.28 or >= 2.6.11 for keepalived.
See README.Debian for more information.