Running a shell script on becoming the CARP master?

[Matthew Hagerty]

Dominic Marks wrote:

>On Saturday 26 November 2005 15:14, Matthew Hagerty wrote:
>  
>
>>Greetings,
>>
>>Are there any hooks into CARP to run a shell script when a machine 
>>becomes the master?  Also, is there a way to force a machine to become 
>>the master without powering off the current master (for example to do 
>>maintenance on the current master)?
>>    
>>
>
>I believe there was supposed to be a utility for this sort of thing
>but I haven't seen or heard anything about it. In the mean time a
>program which read the data could probably be built from the ifconfig
>code quite simply. It would be really nice if there were kevent
>notifications for CARP events.
>
>  
>
>>Thanks,
>>Matthew
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>>    
>>
>
>  
>
I was looking at the ifconfig output and it certainly could be parsed 
for the CARP status I suppose, but it just seemed a little crude and I 
wanted to make sure I was not missing something more obvious.  Do you 
know if the CARP interface is up, available, and stable by the time 
/usr/local/etc/rc.d scripts are run?

Thanks,
Matthew