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

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

57       cl_status(1), apphbd(8)
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DOCUMENTATION

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

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

69       heartbeat - Alan Robertson <alanr@unix.sh> et al.
70       man page - Juan Pedro Paredes Caballero <juampe@retemail.es>
71                  Horms <horms@verge.net.au>
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76                                 12th May 2004                    HEARTBEAT(8)
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