[Linux-cluster] reducing heartbeat interval

[Patrick Caulfield]

garylua at singnet.com.sg wrote:
> Hi, hwo do i go about changing the heartbeat intervals for cluster suite for RHEL4? Is the minimum 5 seconds, or can i go even lower, like 1 sec? thanks

cluster.conf parameters (eg):

<cman hello_timer="1" deadnode_timer="10"/>

The number are integer seconds so 1 is the smallest value you can have. Before
you put that into production though, check it under load because high I/O or
network loads can cause spurious node "failures".

see /proc/cluster/config/cman for all the changeable values.

-- 
Patrick

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