Thanks Stefano,
For various reasons, I am using all 3 systems, but the only way I knew how to
set up a layer for GeoWebCache was piping it through GeoServer first. I guess
that's not the case.
Either way I worked out the problem was to do with GeoServer needing to
'rediscover' the MapServer layers.
Originally the same map file had been set up for some EPSG:4326 layers when it
was set up.
At that point the bounds were -180,-90,180,90. Of course, without refreshing
the settings, GeoServer was only making requests to satisfy the apparent bounds
in metres rather than degrees.
That meant it was going to be a pretty small bounds!
All good now.
Date: Thu, 15 Nov 2012 21:28:26 +0100
Subject: Re: [Geoserver-users] Mapserver via GeoServer
From: [email protected]
To: [email protected]
CC: [email protected]
Are you using GeoServer configuring wms cascade for MapServer?
If this is the case, and you are only using it for the integrated GWC, it seems
to me it is overkill. I would deploy a stand alone installation of GWC to cache
mapserver layers.
Please forgive me in case I totally misunderstood your problem
Cheers
Stefano
Il giorno 15/nov/2012 19:54, "Neil Jakeman" <[email protected]> ha
scritto:
Hi all, - apologies for accidental duplication
I am just setting up a server (with the help of a sys admin) to use
GeoServer/GWC and also MapServer. I was planning on using TileCache with
MapServer but was running into problem so decided to cache it via GeoWebCache
instead.
The Mapserver layer in question is a simple world map in EPSG:3857. It serves
directly from MapServer to Leaflet or OpenLayers without any apparent problems
(at this stage)
However, when I set up the layer in GeoServer, something happens that affects
the bounds. At low zooms it looks normal, but as I zoom in, the portion of the
map that can be viewed gets smaller and smaller (toward 0,0 I guess).
I figure it is some type of tiling problem, and of course the same problem is
apparent when previewing the layer in GWC.
There are no tile loading errors, so it appears that requests are valid. The
layer settings in Mapserver are:
LAYER NAME
"postgres_worldmap_3857" METADATA
"wms_title" "worldmap"
"wms_srs" "EPSG:3857"
END PROJECTION
"init=epsg:3857"
END TYPE POLYGON
CONNECTIONTYPE POSTGIS
EXTENT -20037507 -30240971
20037507 18365151 CONNECTION
"host=xxx.xxx.xxx.xxx port=5432 dbname=postgres user=postgres password=XXXXXXX"
DATA "the_geom from
tbl_simple_world_border_3857" CLASS
STYLE
OUTLINECOLOR 255 0 0
COLOR 0 0 255
ANTIALIAS TRUE
END
END END And the geoserver layer
is set up as;
Native srs and Declared Srs as EPSG:3857 (Keep Native)BB -20,037,507
-30,240,971 20,037,507 18,365,151
LatLng BB -180 -90 180 90 In fact, I realise now, watching the Apache logs that
the following Geoserver request isn’t even being passed to mapserver :
/geoserver/mapserver_layers/wms?LAYERS=mapserver_layers%3Apostgres_worldmap_3857&STYLES=&FORMAT=image%2Fpng&SERVICE=WMS&VERSION=1.1.1&REQUEST=GetMap&SRS=EPSG%3A3857&BBOX=-3143565.5136731,1300794.6923825,1864194.1259754,7376559.9423825&WIDTH=422&HEIGHT=512
But this one is:
/geoserver/mapserver_layers/wms?LAYERS=mapserver_layers%3Apostgres_worldmap_3857&STYLES=&FORMAT=image%2Fpng&SERVICE=WMS&VERSION=1.1.1&REQUEST=GetMap&SRS=EPSG%3A3857&BBOX=-4021703.4599621,-1404819.5205081,986056.17968631,4670945.7294919&WIDTH=422&HEIGHT=512
as:
/sample_map_script.cgi?SERVICE=WMS&LAYERS=postgres_worldmap_3857&CRS=EPSG:3857&FORMAT=image%2Fpng&TRANSPARENT=FALSE&HEIGHT=512&BGCOLOR=0xFFFFFF&REQUEST=GetMap&BBOX=-4021703.4599621,-1404819.5205081,986056.17968631,4670945.7294919&WIDTH=422&STYLES=&VERSION=1.3.0
If anyone knows what I am doing wrong here, or if the problem sounds familiar,
please help my tired eyes to spot it!
Thanks and goodnight! Neil
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