Apache clustering

Hello everyone,

I'm new to clustering application.
One of our customers, need an apache clustering environment.
How I can realize that ?
The environment needs also tomcat.
Shortly, I've 4 unix hosts, which have the LAMP (linux,
apache....)configuration, and now I need clustering between the 4 apache
(with tomcat support). Ideas?

Thanks.

PS: Tomcat + Gomba

Davide visto che ci siamo parliamo italiano :fear:

Mi serve che se muore uno, uno tra gli altri 3 deve rispondere.
Fine.

"Davide Bianchi" <davideyeahsure@onlyforfun.net> ha scritto nel messaggio
news:slrnenqfkl.3ck.davideyeahsure@fogg.onlyforfun .net...
> On 2006-12-11, Nicola Liquori <crystaldamage@libero.it> wrote:
>> One of our customers, need an apache clustering environment.
>
> And that would mean what exactly? Does he wants 4 servers running more
> or less the same thing with a load balancer in front or does he want
> 2 groups of 2 servers each group running his own things in a
> hi-availability
> configuration?
>
>> How I can realize that ?
>
> First of all, clear up your mind and your customer's. Then research
> documentation on what you want to do.
>
> Davide
>
> --
> It's a lot less painful and more fun to learn from someone else's
> experience than on you own skin. - Bob Arnold

Well, sorry for italian words.

Ok, so load balancer can do that. There is also a software solution?
For example: a software that I install onto a non-grouped machine (like
another server) that is able to decide which server is dead or not ? (like
load balancer...)

Thanks.

"Davide Bianchi" <davideyeahsure@onlyforfun.net> ha scritto nel messaggio
news:slrnenqkvq.3ck.davideyeahsure@fogg.onlyforfun .net...
> On 2006-12-11, Nicola Liquori <crystaldamage@libero.it> wrote:
>> Davide visto che ci siamo parliamo italiano :fear:
>
> Well, as long as we are on a public -international- newsgroup, I think
> that using english is better. So if I say some crackpot things, someone
> else can correct me.
>
>> Mi serve che se muore uno, uno tra gli altri 3 deve rispondere.
>
> Well, both HA clustering and load balancing can do that, in the HA
> system the two machines 'talks' with each other and if one of the two
> doesn't respond anymore the other one assume that his buddy is dead and
> will start all the services that were run by the deceased, in the
> load balancing view the load balancer does the job _and_ he can also
> distribute multiple requests to different machines depending on the
> load of the single machine. So it mostly depends how much you want
> to spend and how many connections you want to support.
>
> Load balancer can be cheap, they can be simply rented by and someone
> else can do the configuration.
>
> Davide
>
> --
> The Edsel. New Coke. Windows 2000. All mandatory case studies for
> bizschool
> students in 2020.
> -- Bear Giles (in a LinuxToday post)