ucarp 1.5.1 - Jul 25 2009
--interface=<if> (-i <if>): bind interface <if>
--srcip=<ip> (-s <ip>): source (real) IP address of that host
--vhid=<id> (-v <id>): virtual IP identifier (1-255)
--pass=<pass> (-p <pass>): password
--passfile=<file> (-o <file>): read password from file
--preempt (-P): becomes a master as soon as possible
--neutral (-n): don't run downscript at start if backup
--addr=<ip> (-a <ip>): virtual shared IP address
--help (-h): summary of command-line options
--advbase=<seconds> (-b <seconds>): advertisement frequency
--advskew=<skew> (-k <skew>): advertisement skew (0-255)
--upscript=<file> (-u <file>): run <file> to become a master
--downscript=<file> (-d <file>): run <file> to become a backup
--deadratio=<ratio> (-r <ratio>): ratio to consider a host as dead
--shutdown (-z): call shutdown script at exit
--daemonize (-B): run in background
--ignoreifstate (-S): ignore interface state (down, no carrier)
--nomcast (-M): use broadcast (instead of multicast) advertisements
--facility=<facility> (-f): set syslog facility (default=daemon)
--xparam=<value> (-x): extra parameter to send to up/down scripts
Sample usage:
Manage the 10.1.1.252 shared virtual address on interface eth0, with
1 as a virtual address idenfitier, mypassword as a password, and
10.1.1.1 as a real permanent address for this host.
Call /etc/vip-up.sh when the host becomes a master, and
/etc/vip-down.sh when the virtual IP address has to be disabled.
ucarp --interface=eth0 --srcip=10.1.1.1 --vhid=1 --pass=mypassword \
      --addr=10.1.1.252 \
      --upscript=/etc/vip-up.sh --downscript=/etc/vip-down.sh
Please report bugs to bugs at ucarp dot org.