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This web page is no longer maintained. Information presented here exists only to avoid breaking historical links.
The Project stays maintained, and lives on: see the Linux-HA Reference Documentation.
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1 February 2010 Hearbeat 3.0.2 released see the Release Notes

18 January 2009 Pacemaker 1.0.7 released see the Release Notes

16 November 2009 LINBIT new Heartbeat Steward see the Announcement

Last site update:
2019-12-06 02:30:52

hbgenmethod - specifies method for creating Heartbeat communications generation number

The hbgenmethod directive specifies how Heartbeat should compute its current generation number for communications. This is a specialized and obscure directive, used mainly in firewalls which have no local disk, and other devices which do not have a method of storing data persistently across reboots. It defaults to storing the Heartbeat generations in a file. Generation numbers are used by Heartbeat for replay attack protection.

All legal hbgenmethod directives are shown below:

hbgenmethod time
hbgenmethod file # this is the default.


If one specifies the time method, there are certain possible cases where troubles can arise. If a machine restarts Heartbeat and its local time of day clock is less than or equal to than the value of the time of day clock when Heartbeat last started, then that node will be unable to join the cluster.