On 13 mai 06, at 23:30, Miguel Arroz wrote:
Hi!
On 2006/05/13, at 18:11, Philippe Lafoucrière wrote:
First of all, I'm new to webobjects, please avoid RTMF answers :)
You actually should RTFM, because the FM is really good! :) Apple
provides very good documentation on WO (as with everything else
related do developers). Particularly, you should read the WO Deploy
guide
I should have started by that, the deploy manual seems to be complete
(I've read all other manuals about WO I think).
Could someone tell me where can I find some info concerning the
creation of a WO cluster ?
Nop. WO is made to do that! :) You just have to build your apps
with the concern that there will be a lot of instances running, not
just one. So, if you have, for example, timers (maintenance tasks
that run every X minutes), you cannot include them in the app (or
else, every app will run them every X minutes!). You should build a
separate app for that.
I have some, I think I'll to fight with thoses timers and concurrency :)
You should run several instances of your main app in each server
(how many? the right number should be N * MEM = TOTAL_MEM -
FREE_SPACE, where MEM is the memory your app uses, TOTAL_MEM is the
total system memory, and FREE_SPACE is some free space you should
leave for the OS! ;) The ideia is to fill up the server memory with
instances, but do not overload the server memory, or you'll start
swapping.
I know it's possible using JavaMonitor, but I want some extras
info, especially if webobjects can be runned on Xserve Cluster Nodes.
Why not? Even on Mac Minis! ;) You don't need Mac OS X Server any
more for deploying. A simple Tiger client will do.
My question was motivated by the text : "*Les logiciels WebObjects
Deployment, NetBoot pour clients Mac OS 9 et Macintosh Manager ne
sont pas fournis avec la configuration en cluster de Xserve." which
can be translated into "*The softwares WebObjects Deployment, NetBoot
for Mac OS 9 clients & Macintosh Manager are not bundled with the
cluster configuration of Xserve."
(source : http://www.apple.com/ca/fr/xserve/cluster/specs.html)
Btw, this text is not available on the apple.com (US) and apple.com/
fr (FR) sites. This page is maybe outdated, it still mentions Mac OS
10.3 ...
Moreover, I'd like to know if I can build an EJB-like architecture
with WO : some xserves serving framework objects (I have to build
a really big website).
I don't know EJB, so I'll skip that one.
Anyway, read the WO Deploy Guide from Apple. It answers (almost)
all your questions about deploying.
Thank you all for your answsers
Philippe
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