[Pacemaker] Best setup for lots and lots of IPs

Dejan Muhamedagic dejanmm at fastmail.fm
Mon Jan 23 09:36:31 EST 2012


On Fri, Jan 20, 2012 at 10:24:08PM +0100, Anton Melser wrote:
> On 20 January 2012 19:37, gustavo panizzo <gfa> <gfa at zumbi.com.ar> wrote:
> >> b) (based on the use case of 2000 IP's I'd guess you have at least a
> >> /21 public subnet available - or even larger - and based on good
> >> practice I'd also guess these IP's are given from a continuous range,
> >> in which case the script would) take a start IP and end IP as
> >> parameters, and perform a for loop for the resulting range (thus using
> >> only 2 parameters for the IP definition, and the other parameters I've
> >> seen in the example were netmask and monitoring interval, a grand
> >> total of 4).
> >
> > i would use that script as a cluster resource,
> > so when the active node die, you can be sure cluster will run the
> > script on the surviving node
> Thanks for your suggestions - I'll have a look at adapting the ipaddr2
> script - do you think it would be worth resubmitting something for
> inclusion somewhere? Is there some sort of forge where this sort of
> thing would happily live, or do people usually roll their own?

IIRC, IPaddr2 already has such an option. See "crm ra info



> Cheers
> Anton
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