Load Balancing Facility

Hello,

One of my customers wants to setup Load balancing using Linux system for
their Web server farm. Is there any software tool that manages the load
balancing for the Web farm?

If I were to use a cluster, what packages would I need to have a load
balancing facility setup?

If anyone done this before, could you please point me to some resources on
how you did it?

Thank you in advance for any information and pointers.

Subba Rao
s u p e r o <AT> a t t g l o b a l <DOT> n e t

Jem Berkes <jb@users.pc9.org> wrote in message news:<Xns93E4841138B72jbuserspc9org@130.179.16.24> ...
> > One of my customers wants to setup Load balancing using Linux system
> > for their Web server farm. Is there any software tool that manages
> > the load balancing for the Web farm?
>
> I don't know if this applies to your situation, but if the "farm" consists
> of multiple IP addresses then DNS alone can accomplish round robin
> balancing. i.e. if www.example.com resolves to multiple IP addresses, this
> will distribute the traffic load between the hosts.

Hi,
Here is answer for your doubt. You can use Linux Virtual server
for Load balancing. Another name for this is "IP Virtual server". If u
want to need more info about this or if need Load balancer and how to
configure .......
Go to Linuxvirtualserver.org


This is a wonderful site .....there u can get all u r needs.


regards,
sathish.

In article <Xns93E48941C1828nonamenowherenet@216.168.3.44>,
Subba Rao <noname@nowhere.net> wrote:

| One of my customers wants to setup Load balancing using Linux system for
| their Web server farm. Is there any software tool that manages the load
| balancing for the Web farm?
|
| If I were to use a cluster, what packages would I need to have a load
| balancing facility setup?
|
| If anyone done this before, could you please point me to some resources on
| how you did it?

Unfortunately you are just short of having a optimal answer. The best
thing available is the linuxvirtualserver.org stuff, which really needs
custom kernels on every machine, etc, or will concentrate traffic in the
virtual server.

There is what appears to be far more capable code in the 2.6 kernel
series, if I'm not reading it wrong it seems to be capable of working
with unpatched kernels as targets, and possibly that "other operating
system" as well. I'm just looking at mail from non-developers, I
haven't gone to the site for info, but it's the same site so you can
check that out and see if the new features are really more capable. On
my list for Thanksgiving weekend, not before.

--
Bill Davidsen <davidsen@tmr.com> CTO, TMR Associates
As we enjoy great advantages from inventions of others, we should be
glad of an opportunity to serve others by any invention of ours; and
this we should do freely and generously.
-Benjamin Franklin (who would have liked open source)

On Tue, 16 Sep 2003 18:48:46 +0000, bill davidsen wrote:

> In article <Xns93E48941C1828nonamenowherenet@216.168.3.44>, Subba Rao
> <noname@nowhere.net> wrote:
>
> | One of my customers wants to setup Load balancing using Linux system
> | for their Web server farm. Is there any software tool that manages
> | the load balancing for the Web farm?
> |
> | If I were to use a cluster, what packages would I need to have a load
> | balancing facility setup?
> |
> | If anyone done this before, could you please point me to some
> | resources on how you did it?
>
> Unfortunately you are just short of having a optimal answer. The best
> thing available is the linuxvirtualserver.org stuff, which really needs
> custom kernels on every machine, etc, or will concentrate traffic in the
> virtual server.
>
> There is what appears to be far more capable code in the 2.6 kernel
> series, if I'm not reading it wrong it seems to be capable of working
> with unpatched kernels as targets, and possibly that "other operating
> system" as well. I'm just looking at mail from non-developers, I haven't
> gone to the site for info, but it's the same site so you can check that
> out and see if the new features are really more capable. On my list for
> Thanksgiving weekend, not before.




IPTABLES : The facility exists to round-robin serveral servers. An
incoming connection to say port 80 would be re-written and passed through
to a pool of internal computers. You need one port-forwarding entry for
each of the internal computers. Note that you should specify that the rule
be applied to new connections, as already established connections should
continue to go the same server.


Alternately, there is some sort of thing with apache, but I could be
dreaming...

hth

bill davidsen wrote:

> In article <Xns93E48941C1828nonamenowherenet@216.168.3.44>,
> Subba Rao <noname@nowhere.net> wrote:
>
> | One of my customers wants to setup Load balancing using Linux system for
> | their Web server farm. Is there any software tool that manages the load
> | balancing for the Web farm?
> |
> | If I were to use a cluster, what packages would I need to have a load
> | balancing facility setup?
> |
> | If anyone done this before, could you please point me to some resources
> | on how you did it?
>
> Unfortunately you are just short of having a optimal answer. The best
> thing available is the linuxvirtualserver.org stuff, which really needs
> custom kernels on every machine, etc, or will concentrate traffic in the
> virtual server.
>
> There is what appears to be far more capable code in the 2.6 kernel
> series, if I'm not reading it wrong it seems to be capable of working
> with unpatched kernels as targets, and possibly that "other operating
> system" as well. I'm just looking at mail from non-developers, I
> haven't gone to the site for info, but it's the same site so you can
> check that out and see if the new features are really more capable. On
> my list for Thanksgiving weekend, not before.
>

Perhaps you should give OpenMosix a try:

http://openmosix.sourceforge.net

Kind regards, Joerg.