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This web page is no longer maintained.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:
2018-04-22 02:11:47

initdead - set initial deadtime detection interval

The initdead parameter is used to set the time that it takes to declare a cluster node dead when Heartbeat is first started. This parameter generally needs to be set to a higher value, because experience suggests that it sometimes takes operating systems many seconds for their communication systems before they operate correctly. initdead is specified according to the HeartbeatTimeSyntax. A sample initdead value is shown below:

initdead 30

In some switched network environments, switches engage in a spanning tree algorithm whenever a NIC connects to a port. This can take a long time to complete, and it is only necessary if the NIC being connected is another switch. If this is the case, you may be able to configure certain NICs as not being switches and shrink the connection delay significantly. If not, you'll need to raise initdead to make this problem go away.

If this is set too low, you'll see one node declare the other as dead, and for non-CRM clusters, you'll see "both nodes own XXX resources" in the logs if initdead is set too low.