NAME

       keepalived - load-balancing and high-availability service

SYNOPSIS

       keepalived [-f|--use-file=FILE] [-P|--vrrp] [-C|--check] [-l|--log-console] [-D|--log-detail]
       [-S|--log-facility={0-7}] [-V|--dont-release-vrrp] [-I|--dont-release-ipvs] [-R|--dont-respawn]
       [-n|--dont-fork] [-d|--dump-conf] [-p|--pid=FILE] [-r|--vrrp_pid=FILE] [-c|--checkers_pid=FILE]
       [-x|--snmp] [-A|--snmp-agent-socket=FILE] [-m|--core-dump] [-M|--core-dump-format[=PATTERN]]
       [-v|--version] [-h|--help]

DESCRIPTION

       Keepalived provides simple and robust facilities for load-balancing and high-availability. The
       load-balancing framework relies on the well-known and widely used Linux Virtual Server (IPVS) kernel
       module providing Layer4 load-balancing. Keepalived implements a set of checkers to dynamically and
       adaptively maintain and manage a load-balanced server pool according to their health. Keepalived also
       implements the VRRPv2 and VRRPv3 protocols to achieve high-availability with director failover.

OPTIONS

        -f, --use-file=FILE
              Use    the    specified    configuration    file.    The    default    configuration    file    is
              "/etc/keepalived/keepalived.conf".

        -P, --vrrp
              Only run the VRRP subsystem. This is useful for configurations that  do  not  use  the  IPVS  load
              balancer.

        -C, --check
              Only  run  the  healthcheck  subsystem.  This  is useful for configurations that use the IPVS load
              balancer with a single director with no failover.

        -l, --log-console
              Log messages to the local console. The default behavior is to log messages to syslog.

        -D, --log-detail
              Detailed log messages.

        -S, --log-facility=[0-7]
              Set syslog facility to LOG_LOCAL[0-7]. The default syslog facility is LOG_DAEMON.

        -X, --release-vips
              Drop VIP on transition from signal.

        -V, --dont-release-vrrp
              Don't remove VRRP VIPs and VROUTEs on daemon stop. The default behavior is to remove all VIPs  and
              VROUTEs when keepalived exits.

        -I, --dont-release-ipvs
              Don't  remove IPVS topology on daemon stop. The default behavior it to remove all entries from the
              IPVS virtual server table when keepalived exits.

        -R, --dont-respawn
              Don't respawn child processes. The default behavior is to restart the VRRP and  checker  processes
              if either process exits.

        -n, --dont-fork
              Don't fork the daemon process. This option will cause keepalived to run in the foreground.

        -d, --dump-conf
              Dump the configuration data.

        -p, --pid=FILE
              Use the specified pidfile for the parent keepalived process. The default pidfile for keepalived is
              "/var/run/keepalived.pid", unless a network namespace is being used. See NAMESPACES below for more
              details.

        -r, --vrrp_pid=FILE
              Use  the  specified  pidfile  for  the  VRRP child process. The default pidfile for the VRRP child
              process is "/var/run/keepalived_vrrp.pid", unless a network namespace is being used.

        -c, --checkers_pid=FILE
              Use the specified pidfile for checkers child process. The default pidfile for  the  checker  child
              process is "/var/run/keepalived_checkers.pid" unless a network namespace is being used.

        -x, --snmp
              Enable the SNMP subsystem.

        -A, --snmp-agent-socket=FILE
              Use the specified socket for connection to SNMP master agent.

        -m, --core-dump
              Override  the  RLIMIT_CORE  hard and soft limits to enable keepalived to produce a coredump in the
              event of a segfault or other failure.  This is most useful if keepalived has been built with 'make
              debug'.  Core dumps will be created in /, unless keepalived is run with the --dont-fork option, in
              which case they will be created in the directory from which keepalived was run, or  they  will  be
              created in the directory of a configuraton file if the fault occurs while reading the file.

        -M, --core-dump-pattern[=PATTERN]
              Sets  option --core-dump, and also updates /proc/sys/kernel/core_pattern to the pattern specified,
              or 'core' if none specified.  Provided the parent process doesn't terminate  abnormally,  it  will
              restore /proc/sys/kernel/core_pattern to its original value on exit.

              Note: This will also affect any other process producing a core dump while keepalived is running.

        -v, --version
              Display the version and exit.

        -h, --help
              Display this help message and exit.

NAMESPACES

       keepalived can be run in a network namespace (see keepalived.conf(5) for configuration details). When run
       in     a     network     namespace,     a    local    mount    namespace    is    also    created,    and
       /var/run/keepalived/keepalived_NamespaceName is mounted on /var/run/keepalived.  By  default,  pid  files
       with the usual default names are then created in /var/run/keepalived from the perspective of a process in
       the  mount  namespace,  and  they  will  be visible in /var/run/keepalived/keepalived_NamespaceName for a
       process running in the default mount namespace.

SIGNALS

       keepalived reacts to a set of signals.  You can send a signal to the parent keepalived process using  the
       following:

              kill -SIGNAL $(cat /var/run/keepalived.pid)

       Note  that  -SIGNAL  must be replaced with the actual signal you are trying to send, e.g. with HUP. So it
       then becomes:

              kill -HUP $(cat /var/run/keepalived.pid)

       HUP    This causes keepalived to close down all interfaces, reload its configuration, and start  up  with
              the new configuration.

       TERM, INT
              keepalived will shut down.

       USR1   Write configuration data to /tmp/keepalived.data

       USR2   Write statistics info to /tmp/keepalived.stats

SEE ALSO

       keepalived.conf(5), ipvsadm(8)

AUTHOR

       This man page was written by Ryan O'Hara <rohara@redhat.com>

                                                   April 2016                                      KEEPALIVED(8)