nixCraft

Hello
Nixcraft fans

This is Manish.Well I want configure apache as a load balancing server on 7 servers .So if one server fails the load will be shared by rest of 6 servers.Therefore anyon knows how to configure that.Anticipating a helpful information.

Thanking you all
Manish

Welcome to nixCraft forum!

Most people use Linux virtual server (LVS) which is a highly scalable and highly available server built on a cluster of real servers, with the load balancer running on the Linux. Visit The Linux Virtual Server Project - Linux Server Cluster for Load Balancing site for more information. Can you tells us a bit about your application? Do you want failover or load balancing or combination of both? Do you want SSL support? Do you use centralized SAN storage? What about MySQL/Oracle? Do your need solution for that too...

So many factors more you tell us the right information you will get...

Hi Tom

Well I wana use MYSQL 5 and 6 both and will act as master and slave , php4 and php5 on same server and also need both the failover and loadbalancing too . And I also wana use SSL .for MYsql I am gone a setup on centos and for apache and php on freebsd-6.2.. Well I need solution if you can help me out.

Thanking you

manish,

LVS can do that, all these servers located in local data center or remote data center?


For MySQL use official mysql load balancing server as follows

Mysql cluster
master <==> slave

If master goes down slave will take place, official cluster will do sync between two server. Minimum 3 servers required for mysql clustering. Please read following tutorials. Go with 5.1 as it is stable and working well:
Official mysql clustering information => MySQL AB :: MySQL Cluster
A good tutorial => How To Set Up A Load-Balanced MySQL Cluster | HowtoForge - Linux Howtos and Tutorials
Apache load balacing tutorial How To Set Up A Loadbalanced High-Availability Apache Cluster | HowtoForge - Linux Howtos and Tutorials

Following diagram will clear your idea:
You need to install MySQL cluster management server on one of the LVS load balancer. To sync web server server you can use rsync or use DRDB. Third possibility is use centralized SAN to push data to all server.

Hope this helps! If you have other problem just hit reply button

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Hi
Thanks a lot.Well but how will be the httpd.conf file configuration. Is that the same configuration on all server or something different. And yea I also wan't to use both PHP4 for certain application and PHP5 for certain application so how to make it to run both version of PHP with all of this apache server. And also wana know is that apache 2.2 is stable.

Thanking you
Manish

httpd.conf and other config file should be the same for all servers. You must use same docroot such as /var/www. You must sync /var/www across all the boxes. You can run php4/php5, perl, python etc. Apache 2.2 is stable no problem.

I recommend trying tests in a dummy environment and later move to production.

Good luck

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I wan't to trun both php4 and php5 on all servers cause some application needs php4 and some application needs php5. Well and what about thae Ethernet address configuration cause if I define IP's in httpd.conf file then what about the ethernet address config we can't set all server's ethernet with the same IP's so how to deal with that.

Apache node 1 - IP address: 192.168.0.101 and document root: /var/www
Apache node 2 - IP address: 192.168.0.102 and document root: /var/www
Load Balancer node 1: IP address: 192.168.0.103
Load Balancer node 2: IP address: 192.168.0.104
Virtual IP Address: 192.168.0.105

You need to assign 192.168.0.105 in httpd.conf Load balacner will take care of ip assign and other stuff. See image attached

Take printout of all docs located at LVS Documentation so that you can understand everything

Attached Images

ultramonkey.jpg (31.0 KB, 16 views)

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