1HEARTBEAT(8)                System Manager's Manual               HEARTBEAT(8)
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NAME

6       heartbeat - Heartbeat subsystem for High-Availability Linux
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SYNOPSIS

9       heartbeat
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DESCRIPTION

12       heartbeat  is  a  basic  heartbeat subsystem for Linux-HA.  It will run
13       scripts at initialisation, and when  machines  go  up  or  down.   This
14       version  will  also  perform IP address takeover using gratuitous ARPs.
15       It works correctly for a 2-node configuration,  and  is  extensible  to
16       larger configurations.
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18       It implements the following kinds of heartbeats:
19          * Bidirectional Serial Rings ("raw" serial ports)
20          * UDP/IP broadcast (ethernet, etc.)
21          * UDP/IP multicast (ethernet, etc.)
22          * special "ping" heartbeats for routers, etc.
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24       Comprehensive   documentation  on  the  configuration  and  running  of
25       heartbeat is supplied in HTML format with the distribution of the code.
26       If  this documentation is not installed on your system it can be found,
27       with the latest distribution of heartbeat on http://www.linux-ha.org/
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OPTIONS

30       -d     Increment debugging level. Higher levels are more verbose.
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32       -r     Reloads heartbeat. It just sends it a SIGHUP.   If  nothing  has
33              changed  nothing  will happen.  If ha.cf or authkeys has changed
34              it will start heartbeat or reread authkeys. May not be used with
35              -R.
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37       -k     Kill (stop) heartbeat.
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39       -s     Report heartbeat status.
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41       -R     Heartbeat  restart  exec  flag  (internal use only).  May not be
42              used with -r.
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44       -C     Heartbeat current  resource  state  for  restart  (internal  use
45              only).  Only valid with -R.
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47       -V     Print out heartbeat version.
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49       Note  that  most of these options are used for supporting the heartbeat
50       init script, which provides the conventional start,  stop,  status  and
51       restart  options  (among  others). It is recommended to use this rather
52       than invoking the heartbeat command directly.
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SEE ALSO

56       cl_status(1), apphbd(8)
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DOCUMENTATION

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

64       /etc/ha.cf, /etc/haresources, /etc/authkeys
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AUTHORS

68       heartbeat - Alan Robertson <alanr@unix.sh> et al.
69       man page - Juan Pedro Paredes Caballero <juampe@retemail.es>
70                  Horms <horms@verge.net.au>
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75                                 12th May 2004                    HEARTBEAT(8)
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