[lug] Load Balancing Question

[Dan Ferris]

It's 2 web servers and one squid proxy.  The 2 web servers are load
balanced with DNS Ronud Robin.

I'll have to look at the squid config guide after christmas.

Thanks,
Dan

Ben Luey wrote:

>I haven't done any load-balancing, so I might be completely off my
>rocker... But could you do load-balancing internally via ip address?
>
>I'm not quite clear on your configuration. If you have squid running on
>two servers, then just have half the machines use one and half use the
>other (set via dhcp, say)
>
>If you have one squid machine that routes the requests to either of the
>two machines, can you configure a rule in squid that picks which machine
>to forward to based on the incoming ip address?
>
>Good Luck,
>
>Ben
>
>
>
>On Fri, 2005-12-23 at 13:56 -0700, Dan Ferris wrote:
>  
>
>>So,
>>
>>I have been helping a friend with 2 new mail/web servers.  The 2 servers
>>are DNS round robin load balanced because that was the fastest, easiest,
>>and cheapest way to get the load balancing that we want.
>>
>>So my question is this...
>>
>>The site has a proxy server running Squid.  It's not running in
>>transparent mode, so all the workstations need to have the proxy server
>>set up manually (it sucks, but I didn't do it and it can't be undone
>>without MAJOR hassel) or web browsing won't work. 
>>
>>Now, the load balancing works fine from the outside world.  It's
>>completely transparent to any outside user. 
>>
>>However...
>>
>>If we log into Squirrelmail on a machine that uses the Squid proxy
>>server, it will come up with the folder list just fine, but the inbox
>>message view will say something like invalid login.  This problem is
>>because the proxy requests part of the web page from one server and part
>>of the web page from the other server.
>>
>>I don't have enough time to research this since I have to actually
>>finish Christmas shopping, so I'm enlisting the help of fellow geeks
>>that may have delt with these issues before.  Right now the fix is a
>>bandaid in that the DNS load balancing has been turned off for computers
>>inside the network.
>>
>>I would appreciate any suggestions.  We can't spend any money to get a
>>real load balancer and I'm not highly keep on dealing with LVS (at least
>>not right now).
>>
>>Dan Ferris
>>_______________________________________________
>>Web Page:  http://lug.boulder.co.us
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>>    
>>
>
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>  
>