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HEARTBEAT(8)		    System Manager's Manual		  HEARTBEAT(8)

NAME
       heartbeat - Heartbeat subsystem for High-Availability Linux

SYNOPSIS
       heartbeat

DESCRIPTION
       heartbeat  is  a	 basic	heartbeat subsystem for	Linux-HA.  It will run
       scripts at initialisation, and when  machines  go  up  or  down.	  This
       version	will  also  perform IP address takeover	using gratuitous ARPs.
       It works	correctly for a	2-node configuration,  and  is	extensible  to
       larger configurations.

       It implements the following kinds of heartbeats:
	  * Bidirectional Serial Rings ("raw" serial ports)
	  * UDP/IP broadcast (ethernet,	etc.)
	  * UDP/IP multicast (ethernet,	etc.)
	  * special "ping" heartbeats for routers, etc.

       Comprehensive   documentation  on  the  configuration  and  running  of
       heartbeat can is	supplied in HTML format	with the distribution  of  the
       code.  If  this documentation is	not installed on your system it	can be
       found, with the latest distribution of heartbeat	 on  http://www.linux-
       ha.org/

OPTIONS
       -d     Increment	debugging level. Higher	levels are more	verbose.

       -r     Reloads  heartbeat.  It  just sends it a SIGHUP.	If nothing has
	      changed nothing will happen.  If ha.cf or	authkeys  has  changed
	      it will start heartbeat or reread	authkeys. May not be used with
	      -R.

       -k     Kill (stop) heartbeat.

       -s     Report heartbeat status.

       -R     Heartbeat	restart	exec flag (internal use	 only).	  May  not  be
	      used with	-r.

       -C     Heartbeat	 current  resource  state  for	restart	 (internal use
	      only).  Only valid with -R.

       -V     Print out	heartbeat version.

       Note that most of these options are used	for supporting	the  heartbeat
       init  script,  which  provides the conventional start, stop, status and
       restart options (among others). It is recommended to  use  this	rather
       than invoking the heartbeat command directly.

SEE ALSO
       cl_status(1), apphbd(8)

DOCUMENTATION
       More information	may be found at	http://www.linux-ha.org.

FILES
       /etc/ha.cf, /etc/haresources, /etc/authkeys

AUTHORS
       heartbeat - Alan	Robertson <alanr@unix.sh> et al.
       man page	- Juan Pedro Paredes Caballero <juampe@retemail.es>
		  Horms	<horms@verge.net.au>

				 12th May 2004			  HEARTBEAT(8)

NAME | SYNOPSIS | DESCRIPTION | OPTIONS | SEE ALSO | DOCUMENTATION | FILES | AUTHORS

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