Re: trying to figoure out IPs in nolb-14-4.pg

From: Joseph Mack (mack.joseph@epa.gov)
Date: Wed Jun 13 2001 - 12:08:42 MDT


Alex Rousskov wrote:
>
> On Wed, 13 Jun 2001, Joseph Mack wrote:
 
> Sorry, cannot see anything wrong with it. Based on your description,
> it smells like a routing problem

yes (groan). running fine now.
With all this new polygraph stuff infront of me,
I didn't know where to look first.
 
> I might be misunderstanding your description, but it seems to me that
> you are on the right track. For non-DSR configuration, you have to
> tell the clients that VIP is their origin server and then map VIP to
> real server addresses using AddrMap. The srvlb-l4-4.pg file does that
> (but as you have learned already, you need to set vipMap.addresses to
> TheBench.server_side.hosts to avoid aliasing on the server side).

OK, will go look a bit deeper into PGL.
 
> I have not tried a DSR configuration myself yet, but I suspect that
> the only difference, from Polygraph point of view, would be that
> TheBench.server_side.hosts are set to VIP rather than individual
> [unique] server addresses. In other words, from PGL point of view,
> there will be only one origin server, residing at VIP.

as long as it's OK for the test.
 
> If this is unclear or confusing, lets share PGL configurations
> off-line so that we can help you to build the "right" setup.

expect to hear more from me :-)

Joe

-- 
Joseph Mack PhD, Senior Systems Engineer, Lockheed Martin
contractor to the National Environmental Supercomputer Center, 
mailto:mack.joseph@epa.gov ph# 919-541-0007, RTP, NC, USA



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