heartbeat - Heartbeat subsystem for High-Availability Linux
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/
- Increment debugging level. Higher levels are more verbose.
- 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.
- Kill (stop) heartbeat.
- Report heartbeat status.
- Heartbeat restart exec flag (internal use only). May not be used with
- Heartbeat current resource state for restart (internal use only). Only
valid with -R.
- Print out heartbeat version.
Note that most of these options are used for supporting the heartbeat init
, 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.
More information may be found at http://www.linux-ha.org.
- /etc/ha.cf, /etc/haresources, /etc/authkeys
heartbeat - Alan Robertson <email@example.com> et al.
man page - Juan Pedro Paredes Caballero <firstname.lastname@example.org>