UCARP
From LVSKB
Introduction
UCARP is a portable implementation of the CARP (Common Address Redundancy Protocol) protocol.
UCARP allows a couple of hosts to share common virtual IP addresses in order to provide automatic failover. It is a portable userland implementation of the secure and patent-free Common Address Redundancy Protocol (CARP, OpenBSD’s alternative to the patents-bloated VRRP).
Strong points of the CARP protocol are: very low overhead, cryptographically signed messages, interoperability between different operating systems and no need for any dedicated extra network link between redundant hosts.
UCARP can be used to handle failover among LVS load balancers.
Examples
External Links
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