piranha patch to allow colocation of director/realserver

[Lon Hohberger]

On Fri, 2008-07-11 at 00:01 +0400, Petr Savich wrote:
> Hey guys,
> 
> I want to contribute to piranha project.
> 
> I've made a patch for piranha pulse daemon to allow colocation of both
> IPVS director and real server on the same box (current design does not
> allow doing it). Having only two boxes instead of four is good for
> appliance-based HA solutions.
> 
> Idea is pretty simple: instead of ifconfig up/down the virtual
> interface, just bind the virtual IP to loopback during system startup
> and then advertise/deadvertise it by ARP using arptables or new sysctl
> vars.
> 
> If I missed something at this point please fix me ;-)
> 
> Patch was done in the response to our primary vendor's new software
> product which runs on RHEL4. This is an advanced enterprise security web
> gateway and our company is a software distributor, so commercially
> speaking new feature will extend both the RHEL and vendor's
> opportunities. I see many vendors choose RHEL as an appliance platform
> so probably they'd all benefit from that.
> 
> I choose piranha for its simple, compact yet effective design comparing
> to other bulky and complex projects found at linux-ha.org.
> 
> So if I did not miss anything may I expect the interest from the Red Hat
> to include my patch (along with man page and GUI fixes) into the
> supported package?
> 
> The resulting .patch file is about 360 lines.
> I did not fix the man/GUI yet, waiting for your response.

It sounds like a useful feature.

-- Lon