Re: Running one website via two apache running boxes (windows)

Sander Temme <sctemme@xxxxxxxxxx> · Sun, 29 Apr 2007 08:32:58 +0200

On Apr 28, 2007, at 7:18 PM, hydn79 wrote:

I've mirrored the htdocs to the 2nd server. And they file sync  

every 15 mins.

Problem:
server 1 is www.mysite.com with ip 123.123.123.1
server 2 is simply a different ip eg 123.123.123.2

What is the best method to share the load across the two apache  

servers?

Two main approaches:

1) Use round robin DNS to alternately have www.mysite.com resolve to
   either of your IP addresses
2) Put a load balancer box in front of your servers

Option 1 is very easy to implement: just put a second A record for  

your site in the dns zone configuration.  If you're using bind (which  

most people do), it'll resolve to both in rotation, sending roughly  

half your users to either server

Option 2 will cost you an extra box, and introduce a new single point  

of failure.

If you're on Windows Server, you could use NLB

I notice in the apache console there's a button "Connect" where you  

can

"connect to a remote server". Can that be used to access the htdocs on
Server 1 by apache web service on server 2?

I'm not familiar with an Apache Console.  Perhaps you are using an  

administration console someone else wrote?

Or even better, suggest the best way to lower some of the load on  

my web

server as the 2nd box (mysql server) is almost idle. I've install  

apache on

it but don't know how to connect the two.

Same as above, assuming the MySQL box can see the net.

Alternatively, you may choose to split up your site and have certain  

portions handled by the MySQL box. For instance, use mod_proxy to  

send part of your traffic to the back-end, and/or running your  

application server there.

S.

--
Sander Temme
sctemme@xxxxxxxxxx
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