The main goal of the keepalived project is to add a strong & robust keepalive facility to the Linux Virtual Server project. It implements a multilayer TCP/IP stack checks. Keepalived implements a framework based on three family checks : Layer3, Layer4 & Layer5. This framework gives the daemon the ability of checking a LVS server pool states. Keepalived can be sumarize as a LVS driving daemon.
Keepalived implementation is based on an I/O multiplexer to handle a strong multi-threading framework. All the events process use this I/O multiplexer.
To build keepalived from the git source tree, you will need to have autoconf, automake and various libraries installed. See the INSTALL file for details of what needs to be installed and what needs to be executed before building keepalived.
Keepalived is free software, Copyright (C) Alexandre Cassen. See the file COPYING for copying conditions.
OPENSSL TOOLKIT LICENCE EXCEPTION
In addition, as the copyright holder of Keepalived, I, Alexandre Cassen, acassen@linux-vs.org, grant the following special exception:
I, Alexandre Cassen, <acassen@linux-vs.org>, explicitly allow
the compilation and distribution of the Keepalived software with
the OpenSSL Toolkit.