Server clusters
 

anyone know where i can get information on how to cluster linux servers? is it even possible?

ofcourse.
You can do it via hardware or software.

Hardware clustering will cost you good amount of money...


Read up on Rsync.

thanks sami.

no problem :winkwink:

nah im not sure

rsync can be used if your data doesn't update too often otherwise its
a pain. I'd suggest nfs on a raid5 server if you dont want to use a netapp.
thats the storage part.
for load balancing you can use a server with a program like pen or
an apache2 with mod_proxy or mod_backhand... or squid if you wanna do caching... or....
the solutions are endless, google is your friend.

I sure hope you work it out...

Check out beowoulf :-) thats a real supercomputer cluster.
Also search for MDI

rsync is not a cluster, per se. Its a way of synchronizing servers in (near) real time. All my porn servers are synchronized with failover or load balancing across multiple servers using rsync.

Thats not the same as a cluster though. The disadvantage of clusters is expense and complexity. Also I prefer load balanced servers be at different hosting companies, something not usually possible with a cluster.

You have to ask yourself if you really want a cluster - for most web servers load balanced replicated servers are often a better and cheaper solution.

If you still need help about this matter you can contact me about this. We do nothing but building web clusters ;-)

ICQ: 1616336
http://www.muntinternet.com

We have perfected a linux software based cluster system based on ipvs, lvs and a reverse proxy system. It is a awesome setup that handles 100's of millions of hits a day on off the shelf servers

There are lots of possibilities. We're using EMIC and PolyServe software applications on RedHat ES 3. This is makes more sense on a large setup, but it provides a very scalable clustering solution.

load balancing applications/hardware is the key. then of course the data synchronisation.... or you can also read more about LVS (freeware)

load balancing with distrubuted DNS or round robin dns if you have to.
cheaper and for just highload traffic way better than a cluster...