[Linux-HA] Resource set question

Dominik Klein dk at in-telegence.net
Fri Jul 10 04:46:56 MDT 2009


Steinhauer Juergen wrote:
> Hi guys!
> 
> In my cluster setup, I have 6 IP addresses which should be started in
> parallel for speed purpose, and two apps, depending on the six addresses.
> 
> What would be the best way to configure this?
> Putting all IPs in a group will start them one after another. Bad.

Set ordered=false for the ip group. That will start them in parallel. I
think. Then specify a resource order constraint to start your app group
after the ip group and a colocation constraint to have the apps on the
same node as the ips.

Regards
Dominik

> A colocation with a set including the IPs (sequential=false) and the
> two apps will not migrate the apps (and the remaining IPs), if one IP
> should fail...
> 
> I'm happy about every proposal.
> 
> Regards
> 
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