[Live-demo] Tomcat6 setup for deegree
Ricardo Pinho
rpinho_eng at yahoo.com.br
Thu Sep 3 16:02:53 PDT 2009
Hi,
Sorry for this late reply regarding this subject.
Stefan,
>> Having everything in
>> the already installed tomcat basically means that you have to run all
>> apps deployed on Tomcat, even if you want to run only one.
Are you sure of this? There is no way to stop applications (and leave them deployed) on Tomcat? (after boot I mean!)
It could also be a solution if we could get an easy way for the user start the desired application (when he needs it!)
Or can we solve it with multiple tomcat instances?
I really don't like the idea have having several Tomcat's and Jetty installations on GISVM (duplicate files, less space on disk!!!)
Thanks,
Ricardo Pinho
http://gisvm.com
----- Mensagem original ----
De: Judit Mays <mays at lat-lon.de>
Para: Cameron Shorter <cameron.shorter at lisasoft.com>
Cc: "live-demo at lists.osgeo.org" <live-demo at lists.osgeo.org>
Enviadas: Quinta-feira, 3 de Setembro de 2009 7:39:58
Assunto: Re: [Live-demo] Tomcat6 setup for deegree
Okay, then I will add a new Tomcat dedicated to deegree with the
deegree_install script and have one icon on the desktop. (One for each
webapp doesn't make sense, if they are all running in the same Tomcat.)
Tomcat6 (/var/lib/tomcat6/conf/server.xml) is running on ports:
8080,
8005 (shutdown),
8443 (redirect)
If no objections come up I would like deegree-tomcat to use ports
8081
8006 (shutdown)
8444 (redirect)
As time is ticking away and since disk space is limited, I will not
enable the Philosopher example in deegree WFS, as it needs extra
configured DB connection (PostGis).
My plan now is to unzip a new Tomcat, put four deegree webapps (WMS,
WFS, WCS, iGeoPortal) in the Tomcat webapp folder and have the install
script download this whole chunk to the /usr/lib/ folder of the LiveDVD.
deegree documentation may go into /usr/local/share/deegree.
Is this good?
Kind regards,
Judit
Cameron Shorter schrieb:
> Thanks Stefan,
> Stefan has more experience with this than me, so I'm happy to go along
> with Judit and Stefan's suggestion of using a different servlet container.
>
> Stefan Hansen wrote:
>> Hey!
>>
>> I probably have to disagree slightly with Cameron. Given the
>> constraints of the DVD/VM, I think, Judit's suggestion to start Degree
>> in its on own servlet container is a good idea. Having everything in
>> the already installed tomcat basically means that you have to run all
>> apps deployed on Tomcat, even if you want to run only one. Especially
>> Deegree seems to require a fair amount of resources. So keeping it
>> separated makes sense to me. We probably should do the same with
>> Geoserver. It usually comes with jetty anyway, which is rather
>> lightweight and therefore a good choice for our purposes.
>>
>> As far as Postgres/gis is concerned, I think, it might be a good idea
>> to have a single instance running that is started during the boot
>> process. Many of the apps on the VM/DVD will be able to access it.
>> It could provide a rather limited sample data set, which the other
>> apps can use in their examples. Of course we can also start postgres
>> whenever an app is started, that wants to use it. However, when I
>> worked on the earlier version of Arramagong I played a bit around with
>> that option and got the impression, that we don't gain too much by
>> doing that.
>>
>> cheers,
>> stefan
>>
>> Cameron Shorter wrote:
>>
>>> Judit,
>>> You raise some good points here.
>>> As per: http://wiki.osgeo.org/wiki/GISVM_Build#Build_Drivers
>>>
>>> The GISVM and LiveDVD is targeted at a demo version. The aim is to
>>> highlight the product features, but it not expected to be tuned for
>>> high capacity of complicated scenarios.
>>>
>>> Our biggest constraining factor is lack of RAM. So to work around
>>> this, the policy is:
>>>
>>> 1. Do not start applications upon power up. (Ie, don't start deamons,
>>> allow users to start them instead).
>>> 2. Set up examples which, by default, don't depend on other
>>> applications. Less applications open, means less memory. Ie, Have
>>> GeoServer access a shapefile instead of PostGIS.
>>> 3. Try to avoid scenarios which write data to disk, as disk space in
>>> the Live DVD is stored in RAM, and is not cleared afterward.
>>>
>>> In your case, I suggest that you install all your applications into
>>> the one tomcat webapp rather than starting another. I'm assuming that
>>> having two web applications in the same webapp will not mean the RAM
>>> is consumed until the application is activated. Is this correct?
>>>
>>> If possible, I suggest that you allow the user to turn on Deegree web
>>> apps individually. Ie, create a different desktop icon for Deegree
>>> WMS, Deegree WFS, ...
>>>
>>>
>>> Judit Mays wrote:
>>>
>>>> Hello all,
>>>> I've got a general question about the prefered set-up using the tomcat:
>>>>
>>>> Do you prefer to have all the deegree war-archives inside
>>>> /var/lib/tomcat6/webapps?
>>>> Or would you prefer to have deegree bring along its own tomcat, instead
>>>> of sharing it with GeoServer or other web applications?
>>>>
>>>> I've got a bit of a problem. I see that tomcat6 is running with a Java
>>>> heap space of 128MB. This is not enough. I would suggest 512MB for the
>>>> tomcat at least.
>>>>
>>>> And I don't know if it is such a good idea to add all deegree webapps
>>>> (wms, wfs, wcs, csw, wps, wpvs, iGeoPortal) either. Especially if these
>>>> webapps get started on start up of the system. This will reduce
>>>> performance not only for deegree, but also for any other webapp in
>>>> tomcat6 and maybe even for other desktop applications (depending on the
>>>> memory of the system).
>>>>
>>>> After all, we are talking about server applications that have specific
>>>> hardware needs. You can't expect every laptop and desktop pc to live up
>>>> to these needs. Are there any hardware specifics that you plan to
>>>> provide with the DVD?
>>>>
>>>> What I could do is reduce the list of deegree demo services to WFS,
>>>> WMS,
>>>> WCS (like GeoServer) and the deegree web client iGeoPortal.
>>>> Since WPS and WPVS are working better in deegree3 already, this
>>>> wouldn't
>>>> be such a bad idea. A demo for those services on LiveDVD would then
>>>> have
>>>> to wait until deegree3 is stable.
>>>>
>>>> Any thoughts, ideas or suggestions?
>>>>
>>>> Kind regards,
>>>> Judit
>>>>
>>>> ------------------------------------------------------------------------
>>>>
>>>>
>>>> _______________________________________________
>>>> Live-demo mailing list
>>>> Live-demo at lists.osgeo.org
>>>> http://lists.osgeo.org/mailman/listinfo/live-demo
>>>>
>>>
>>
>>
>>
>
>
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