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Old 05-23-2012, 04:01 AM   #1
uk.engr
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Load Balancing in Apache Server


Assalam o Alaikum.

I am new to Load Balancing. If I create two Apache servers having two virtual hosts on each now how can I setup Load Balancing server between these two. I need step by step guideline. Thanks!
 
Old 05-23-2012, 06:10 AM   #2
austinium
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Have a look here:
http://httpd.apache.org/docs/2.2/mod..._balancer.html
 
Old 05-24-2012, 01:49 AM   #3
uk.engr
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yes it is helpful. I have also studied from some other webs and I made first try for load balancing server after googling and reading stuffs on internet. What I did in VBOX: Is this task completed??

-Web server 1: 192.168.1.109
-Web server 2: 192.168.1.179
-Load balancer Server: 192.168.1.111

Web server 1 & 2 just containing index.html in /var/www/html having contents server 1 and server 2 respectively. Load balancer Server containing following lines in httpd.conf at last:

<VirtualHost *:80>
ProxyRequests off

ServerName domain.com

<Proxy balancer://mycluster>
# WebHead1
BalancerMember http://192.168.1.109:80
# WebHead2
BalancerMember http://10.176.42.179:80

# Security "technically we aren't blocking
# anyone but this the place to make those
# chages
Order Deny,Allow
Deny from none
Allow from all

# Load Balancer Settings
# We will be configuring a simple Round
# Robin style load balancer. This means
# that all webheads take an equal share of
# of the load.
ProxySet lbmethod=byrequests # may be bytraffic or bybusyness

</Proxy>

# balancer-manager
# This tool is built into the mod_proxy_balancer
# module and will allow you to do some simple
# modifications to the balanced group via a gui
# web interface.
<Location /balancer-manager>
SetHandler balancer-manager

# I recommend locking this one down to your
# your office
Order deny,allow
Allow from all
</Location>

# Point of Balance
# This setting will allow to explicitly name the
# the location in the site that we want to be
# balanced, in this example we will balance "/"
# or everything in the site.
ProxyPass /balancer-manager !
ProxyPass / balancer://mycluster/

</VirtualHost>

When we write in browser "domain.com" it switches between these two web servers (server 1 and server 2) for every refresh. Is this task Ok? This work for all 3 algorithms bybusyness, byrequests and bybusyness. Is this all about load balancing in Apache server?
 
Old 05-24-2012, 03:26 PM   #4
xonogenic
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Registered: Feb 2006
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I think its probably safe to assume you didn't read the link posted by austinium. Your question is addressed in the first couple paragraphs as Load Balancer Stickiness.

*Edit*

In regards to your question about if this is a problem or not, it probably isn't while the pages are static, but if you introduce sessions or anything like that, it will be an issue.

Last edited by xonogenic; 05-24-2012 at 03:28 PM.
 
  


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