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Posted to jetspeed-user@portals.apache.org by Andre Bonhote <an...@colt.net> on 2005/01/27 14:38:07 UTC
Jetspeed-2 Clustering
Hi!
It's my first post, and I am completely new to Jetspeed, so bear with me
please.
The idea is to deploy a portal on n machines, where n is 4 at the
moment. We would like to have some pretty load balancers in front of
them, the boxes are located in two countries. As this is usual for good
portals, the user/customer should not care about where he is.
The jetspeed-2 installation will access an oracle 10 database. Now
there's my question: Since it doesn't make sense (IMHO) to put the
oracle beast on all the 4 machines, is it possible to have all 4
jetspeed installations access the same database? Or even, the same
tablespace? Or do I have to create users for each server?
Is there a clustering guide somewhere? I am quite stuck at the moment,
to be honest.
Thanks for your kind help in advance
Cheers
André
--
___ ___ ___ ___
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V V V V Platform Infrastructure f: +41 (0)1 5 630 501
we make business Senior Engineer
straight.forward COLT Telecom e: andre@colt.net
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Re: Jetspeed-2 Clustering
Posted by David Sean Taylor <da...@bluesunrise.com>.
Andre Bonhote wrote:
> Hi!
>
> It's my first post, and I am completely new to Jetspeed, so bear with me
> please.
>
> The idea is to deploy a portal on n machines, where n is 4 at the
> moment. We would like to have some pretty load balancers in front of
> them, the boxes are located in two countries. As this is usual for good
> portals, the user/customer should not care about where he is.
>
> The jetspeed-2 installation will access an oracle 10 database. Now
> there's my question: Since it doesn't make sense (IMHO) to put the
> oracle beast on all the 4 machines, is it possible to have all 4
> jetspeed installations access the same database? Or even, the same
> tablespace? Or do I have to create users for each server?
>
I have clustered Jetspeed 1.6-dev and 1.5 in several installations.
Jetspeed-2 is not quite cluster ready, but I think it was designed much
better than Jetspeed-1 for clustering. Many of the components already
persist their state in a database, so therer is not a lot of need for
tweaking the implementations like we had to do in 1.6.
The plan is to work on clustering for the final release.
Current problems I see with Jetspeed-2 and clustering:
* PSML stored on the file system
* lots of use of the session
* cache synchronization on a number of components
> Is there a clustering guide somewhere? I am quite stuck at the moment,
> to be honest.
>
> Thanks for your kind help in advance
>
> Cheers
>
> André
>
>
--
David Sean Taylor
Bluesunrise Software
david@bluesunrise.com
[office] +01 707 773-4646
[mobile] +01 707 529 9194
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Re: Jetspeed-2 Clustering
Posted by Andre Bonhote <an...@colt.net>.
Guys,
Keep answering, you're making my day. It's a hell lot of information,
and I am happy to learn about all that!
Thanks a lot!
André (pleased to get so much feedback)
--
___ ___ ___ ___
\C/ \O/ \L/ \T/ Andre Bonhote t: +41 (0)1 5 600 600
V V V V Platform Infrastructure f: +41 (0)1 5 630 501
we make business Senior Engineer
straight.forward COLT Telecom e: andre@colt.net
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Re: Jetspeed-2 Clustering
Posted by Randy Watler <wa...@wispertel.net>.
As far as PSML and related content, J2 will support a CMS solution using
Graffito in the near future.
In addition, we are still considering a DB based solution as well.
Randy
Dan Moore wrote:
>That's a great point. With any setup, you're going to want to be sure
>that the PSML and Registry data is shared, especially if it's going to
>be changed. If JS2 doesn't have JMS support, you might be able to
>store this data in your Oracle database.
>
>Dan
>
>--- Jeff Sheets <je...@gmail.com> wrote:
>
>
>
>>I know in Jetspeed 1 there is JMS messaging support that is supposed
>>to help clustering. I haven't used it though.
>>
>>Here's a link: http://portals.apache.org/jetspeed-1/messaging.html
>>
>>
>...snip...
>
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>
>
>
>
Re: Jetspeed-2 Clustering
Posted by Dan Moore <mo...@yahoo.com>.
That's a great point. With any setup, you're going to want to be sure
that the PSML and Registry data is shared, especially if it's going to
be changed. If JS2 doesn't have JMS support, you might be able to
store this data in your Oracle database.
Dan
--- Jeff Sheets <je...@gmail.com> wrote:
> I know in Jetspeed 1 there is JMS messaging support that is supposed
> to help clustering. I haven't used it though.
>
> Here's a link: http://portals.apache.org/jetspeed-1/messaging.html
...snip...
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Re: Jetspeed-2 Clustering
Posted by Jeff Sheets <je...@gmail.com>.
I know in Jetspeed 1 there is JMS messaging support that is supposed
to help clustering. I haven't used it though.
Here's a link: http://portals.apache.org/jetspeed-1/messaging.html
On Thu, 27 Jan 2005 07:58:42 -0800 (PST), Dan Moore <mo...@yahoo.com> wrote:
> Hi Andre,
>
> I want to preface this with the fact that I haven't clustered JS2, nor
> JS1. In fact, I don't even use JS2.
>
> That said, I wanted to comment on how I'd design this system, or at
> least start.
>
> --- Andre Bonhote <an...@colt.net> wrote:
>
> > Hi!
> >
> > It's my first post, and I am completely new to Jetspeed, so bear with
> > me
> > please.
> >
> > The idea is to deploy a portal on n machines, where n is 4 at the
> > moment. We would like to have some pretty load balancers in front of
> > them, the boxes are located in two countries. As this is usual for
> > good
> > portals, the user/customer should not care about where he is.
> >
> > The jetspeed-2 installation will access an oracle 10 database. Now
> > there's my question: Since it doesn't make sense (IMHO) to put the
> > oracle beast on all the 4 machines, is it possible to have all 4
> > jetspeed installations access the same database? Or even, the same
> > tablespace? Or do I have to create users for each server?
>
> You shouldn't have to create database users for each server. You
> should be able to set up oracle to live on a fifth box, and have each
> JS server connect over tcp/ip. Set up your tnsnames.ora on each box
> and it should be easy.
>
> > Is there a clustering guide somewhere? I am quite stuck at the
> > moment,
> > to be honest.
>
> If I were to want to cluster JS2, I'd first make sure tomcat was
> sharing session information across the cluster:
> http://jakarta.apache.org/tomcat/tomcat-5.0-doc/cluster-howto.html
> (this message will provide some comfort, but I'm not sure if it applies
> to JS2
> http://nagoya.apache.org/eyebrowse/ReadMsg?listName=jetspeed-user@jakarta.apache.org&msgId=500554)
>
> Then I'd disable the data cache of JS2, if there is any. You can test
> that easily enough if you get two boxes running with a simple portlet
> that changes a row in the db--see if the other change is reflected.
>
> Now, this will of course hurt performance, since you'll be accessing
> data across the network every time, but it's a cheap way to cluster.
> I'm really not sure what the JS2 data layer looks like. Checkt that'
> it looks like it might be Torque from the docs on the site. In that
> case, you'll probably be interested in this document:
> http://db.apache.org/torque/managers-cache.html
> which might help you use torques cache in a clustered environment.
> (Not sure what version of torque is being used, though.)
>
> Also, I'd recommend you develop, or at the very least test, with at
> least two machines, as having a dev environment similar to production
> can save you a lot of grief.
>
> Good luck and let us know how it goes.
>
> Dan
>
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>
>
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Re: Jetspeed-2 Clustering
Posted by Dan Moore <mo...@yahoo.com>.
Hi Andre,
I want to preface this with the fact that I haven't clustered JS2, nor
JS1. In fact, I don't even use JS2.
That said, I wanted to comment on how I'd design this system, or at
least start.
--- Andre Bonhote <an...@colt.net> wrote:
> Hi!
>
> It's my first post, and I am completely new to Jetspeed, so bear with
> me
> please.
>
> The idea is to deploy a portal on n machines, where n is 4 at the
> moment. We would like to have some pretty load balancers in front of
> them, the boxes are located in two countries. As this is usual for
> good
> portals, the user/customer should not care about where he is.
>
> The jetspeed-2 installation will access an oracle 10 database. Now
> there's my question: Since it doesn't make sense (IMHO) to put the
> oracle beast on all the 4 machines, is it possible to have all 4
> jetspeed installations access the same database? Or even, the same
> tablespace? Or do I have to create users for each server?
You shouldn't have to create database users for each server. You
should be able to set up oracle to live on a fifth box, and have each
JS server connect over tcp/ip. Set up your tnsnames.ora on each box
and it should be easy.
> Is there a clustering guide somewhere? I am quite stuck at the
> moment,
> to be honest.
If I were to want to cluster JS2, I'd first make sure tomcat was
sharing session information across the cluster:
http://jakarta.apache.org/tomcat/tomcat-5.0-doc/cluster-howto.html
(this message will provide some comfort, but I'm not sure if it applies
to JS2
http://nagoya.apache.org/eyebrowse/ReadMsg?listName=jetspeed-user@jakarta.apache.org&msgId=500554)
Then I'd disable the data cache of JS2, if there is any. You can test
that easily enough if you get two boxes running with a simple portlet
that changes a row in the db--see if the other change is reflected.
Now, this will of course hurt performance, since you'll be accessing
data across the network every time, but it's a cheap way to cluster.
I'm really not sure what the JS2 data layer looks like. Checkt that'
it looks like it might be Torque from the docs on the site. In that
case, you'll probably be interested in this document:
http://db.apache.org/torque/managers-cache.html
which might help you use torques cache in a clustered environment.
(Not sure what version of torque is being used, though.)
Also, I'd recommend you develop, or at the very least test, with at
least two machines, as having a dev environment similar to production
can save you a lot of grief.
Good luck and let us know how it goes.
Dan
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