CARP on backup doesn't relinquish MASTER

Marko Lerota marko.lerota at
Wed Jun 13 08:08:26 UTC 2007

Rudy Rucker <crapsh at> writes:

> I noticed that if I reboot a server that is the MASTER, the carp0 on
> the BACKUP box goes into MASTER mode and stays that way -- even when
> the real master machine has finished rebooting.  Is this a desired
> trait to prevent CARP from switching IPs out of control?

Yes, it depends of what you have put in 'net.inet.carp.preempt'

if it's net.inet.carp.preempt=0 
than the backap will become master and stays that way 

and if it's net.inet.carp.preempt=1
then the "real" master will take over the IP address from backup 
server when he gets in the OK state 

One cannot sell the earth upon which the people walk
                               			Tacunka Witco 

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