Hi Andrea and Gabriel,
We rely on using parameterFilters for our GWC-layers, so I guess that means
that we cannot disable the metastore-functionality.
Does that mean that our only option is to use a single GWC-instance with
multiple GeoServer-instances? Would not this result in a single point of
failure?
Does anyone use multiple GWC-instances on Weblogic with a shared data
directory? Is it perhaps possible to configure the servers so that each
instance can use a seperate blob store directory?
Best regards,
Sebjørn Birkeland
SEBJØRN SÆTHER BIRKELAND
SENIOR CONSULTANT
+47 982 19 301
[email protected] | www.bekk.no | open.bekk.no
________________________________
Fra: [email protected] [[email protected]] på vegne av Andrea Aime
[[email protected]]
Sendt: 15. februar 2012 12:17
To: Gabriel Roldan
Cc: Sebjørn Birkeland; [email protected]
Emne: Re: [Geoserver-users] Using GeoServer with shared data directory
On Tue, Feb 14, 2012 at 7:23 PM, Gabriel Roldan
<[email protected]<mailto:[email protected]>> wrote:
Hi Andrea,
Thank you for your answer.
We have tried removing all the jar-files related to GWC, and this seems to
work. For the moment, this is ok, but we are not sure how we can find good long
term solution to this. At some point we need to be able to run GS with GWC on
our Weblogic-servers. Is the solution to use stand-alone GWC-s, or will this
give us the same result? Perhaps someone else has GS/GWC running on Weblogic
and can give us some input?
Yes, use standalong gwc as front end to your clustered geoservers. A single gwc
instance can round robin requests to various wms's. Just add multiple elements
to the wmsLayer wmsUrl property:
<wmsUrl>
<string>http://geoserver1/geoserver/wms</string>
<string>http://geoserver2/geoserver/wms</string>
</wmsUrl>
This works, but mind two downsides:
* you cannot cluster it if you need the metastore and the disk quota, if you
cluster it in order to get HA you'll have to disable them and use a fallback
configuration for it (not round robit)
* cache seeding will be slower as GWC has to ask for PNG meta-tiles to
GeoServer, and then decode them, slice them in tiles and save them on disk,
with the integrated version
the png encoding/decoding is dodged
We normally go for the former (two GWC in fallback) and if we have big pre-seed
jobs we use a separate GeoServer+integrated GWC dedicated to build the tiles
quickly (this also
avoids loading the machines that are supposed to serve the end user requests).
Cheers
Andrea
--
-------------------------------------------------------
Ing. Andrea Aime
GeoSolutions S.A.S.
Tech lead
Via Poggio alle Viti 1187
55054 Massarosa (LU)
Italy
phone: +39 0584 962313
fax: +39 0584 962313
mob: +39 339 8844549
http://www.geo-solutions.it
http://geo-solutions.blogspot.com/
http://www.youtube.com/user/GeoSolutionsIT
http://www.linkedin.com/in/andreaaime
http://twitter.com/geowolf
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