[Geoserver-users] Geoserver-users Digest, Vol 31, Issue 6

George_Tsolakis · December 3, 2008, 4:45pm

Hello to all

Does anybody knows if i can add data from geomedia webmap to openlayers and combine them with my geoservers data?

G. Tsolakis

On Wed, Dec 3, 2008 at 6:41 PM, <geoserver-users-request@lists.sourceforge.net> wrote:

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Today’s Topics:

Re: Geoserver and NAT (Indika Tantrigoda)

Re: Geoserver and NAT (Arne Kepp)

Re: Geoserver and NAT (Andrea Aime)

Re: Geoserver and NAT (Indika Tantrigoda)

Message: 1
Date: Wed, 3 Dec 2008 10:09:37 +0530
From: “Indika Tantrigoda” <indika85@…84…>
Subject: Re: [Geoserver-users] Geoserver and NAT
To: “Arne Kepp” <ak@…1671…>
Cc: “geoserver-users@lists.sourceforge.net”
<geoserver-users@lists.sourceforge.net>
Message-ID:
<4390fbee0812022039j2ca254f2y8d3ccf2720c46608@…85…>
Content-Type: text/plain; charset=“iso-8859-1”

Hi Arne,

Thanks for the info. I think I messed my configurations in setting up the
proxy.

Can u explain a little more on

*Just make sure the path you are proxying is the same as the servlet
context, i.e. don’t proxy
http://yourhostname/some_other_name to http://localhost:8080/geoserver*

Thanks,

Regards,
Indika

2008/12/3 Arne Kepp <ak@…1671…>

Indika Tantrigoda wrote:

Hi,

The NAT setup is not setup to work on the local network. Only requests
coming
from the Internet pass through the NAT. Also I dont have access to the DNS
machine.
So I am kinda stuck.

Keeping the web files in /geoserver/data_dir/www seems to be a temporary
solution,
however in the long run I would prefer to have them in /var/www.

I’ll keep trying to find a work around for this. Maybe going through the
server logs would shed some
light. However I dont plan to keep the geoserver box behind a NAT server
in the long run.

Also can anyone point me to any services that offer geoserver and postgres
hosting facilities.

Thanks for all the help.

Regards,
Indika

Not sure I follow on all this, but what we do at OpenGeo is exactly what I
would do in your case. David linked to it before [1].

The method doesn’t care about NAT, just make sure you use URLs like
“/geoserver/wfs” or “geoserver/wfs” when doing WFS queries. Do not tell the
WFS client to use http://something:8080 , because if you accessed the
JavaScript through :80 then it will treat :8080 as a different host.

So this means you can put your HTML and JavaScript in /var/www , and Apache
will pretend like GeoServer lives in
/var/www/geoserver, so http://somehostname/geoserver will work, and the
external http://someotherhostname:8081/geoserver will also work
automatically.

Just make sure the path you are proxying is the same as the servlet
context, i.e. don’t proxy
http://yourhostname/some_other_name to http://localhost:8080/geoserver

Hope that helps, make sure you have the proxy working internally before you
start worrying about the NAT.

Regarding hosting: I don’t know of any GeoServer / Postgresql specific
hosting facilities. Personally I use hetzner.de a lot (49 Euros per month
for the cheapest dedicated box, if you’re comfy with Linux). You can also
try Amazon EC2 or other VPSs for a small installation, but unfortunately I
have no specific advice to offer.

-Arne

1:
http://geoserver.org/display/GEOSDOC/How+to+proxy+Jetty+through+Apache+on+port+80

–
Arne Kepp
OpenGeo - http://opengeo.org
Expert service straight from the developers

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Message: 2
Date: Wed, 03 Dec 2008 11:23:32 +0100
From: Arne Kepp <ak@…1671…>
Subject: Re: [Geoserver-users] Geoserver and NAT
To: Indika Tantrigoda <indika85@…84…>, geoserver-users
<geoserver-users@lists.sourceforge.net>
Message-ID: <49365E24.50804@…1671…>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed

Sure, it’s only a matter of concern for the user interface, for the
following reason:

If proxying is all setup, and you proxy,
http://yourhostname/some_other_name to http://localhost:8080/geoserver,

then your client makes a request for a page, say
http://yourhostname/some_other_name/Demo.do

But what GeoServer receives is a request for
http://localhost:8080/geoserver/Demo.do , since Apache has rewritten it.

GeoServer’s current UI makes URL with absolute pathnames. So when it
sees that the request URL was http://localhost:8080/geoserver/Demo.do ,
It’ll return a page that has links to things like /geoserver/style.css

When the client takes this path from the returned webpage, and asks
Apache for http://yourhostname/geoserver/style.css , it’ll get a 404
because Apache doesn’t know what to do with it. This will happen with
images etc, so the UI becomes pretty useless.

However, I believe accessing WFS and WMS directly will still work, so if
you don’t care about configuration UI it’s fine.

-Arne

Indika Tantrigoda wrote:

Hi Arne,

Thanks for the info. I think I messed my configurations in setting up
the proxy.

Can u explain a little more on

/Just make sure the path you are proxying is the same as the servlet
context, i.e. don’t proxy
http://yourhostname/some_other_name to http://localhost:8080/geoserver/

Thanks,

Regards,
Indika

2008/12/3 Arne Kepp <ak@…1671… mailto:[ak@...1671...](mailto:ak@...1671...)>

Indika Tantrigoda wrote:

Hi,

The NAT setup is not setup to work on the local network. Only
requests coming
from the Internet pass through the NAT. Also I dont have
access to the DNS machine.
So I am kinda stuck.

Keeping the web files in /geoserver/data_dir/www seems to be a
temporary solution,
however in the long run I would prefer to have them in /var/www.

I’ll keep trying to find a work around for this. Maybe going
through the server logs would shed some
light. However I dont plan to keep the geoserver box behind a
NAT server in the long run.

Also can anyone point me to any services that offer geoserver
and postgres hosting facilities.

Thanks for all the help.

Regards,
Indika

Not sure I follow on all this, but what we do at OpenGeo is
exactly what I would do in your case. David linked to it before [1].

The method doesn’t care about NAT, just make sure you use URLs
like “/geoserver/wfs” or “geoserver/wfs” when doing WFS queries.
Do not tell the WFS client to use http://something:8080 , because
if you accessed the JavaScript through :80 then it will treat
:8080 as a different host.

So this means you can put your HTML and JavaScript in /var/www ,
and Apache will pretend like GeoServer lives in
/var/www/geoserver, so http://somehostname/geoserver will work,
and the external http://someotherhostname:8081/geoserver will also
work automatically.

Just make sure the path you are proxying is the same as the
servlet context, i.e. don’t proxy
http://yourhostname/some_other_name to http://localhost:8080/geoserver

Hope that helps, make sure you have the proxy working internally
before you start worrying about the NAT.

Regarding hosting: I don’t know of any GeoServer / Postgresql
specific hosting facilities. Personally I use hetzner.de
<http://hetzner.de> a lot (49 Euros per month for the cheapest
dedicated box, if you’re comfy with Linux). You can also try
Amazon EC2 or other VPSs for a small installation, but
unfortunately I have no specific advice to offer.

-Arne

1:
http://geoserver.org/display/GEOSDOC/How+to+proxy+Jetty+through+Apache+on+port+80

–
Arne Kepp
OpenGeo - http://opengeo.org
Expert service straight from the developers

–
Arne Kepp
OpenGeo - http://opengeo.org
Expert service straight from the developers

Message: 3
Date: Wed, 03 Dec 2008 11:36:14 +0100
From: Andrea Aime <aaime@…1671…>
Subject: Re: [Geoserver-users] Geoserver and NAT
To: Arne Kepp <ak@…1671…>
Cc: geoserver-users <geoserver-users@lists.sourceforge.net>
Message-ID: <4936611E.5050000@…1671…>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed

Arne Kepp ha scritto:

Sure, it’s only a matter of concern for the user interface, for the
following reason:

If proxying is all setup, and you proxy,
http://yourhostname/some_other_name to http://localhost:8080/geoserver,

then your client makes a request for a page, say
http://yourhostname/some_other_name/Demo.do

But what GeoServer receives is a request for
http://localhost:8080/geoserver/Demo.do , since Apache has rewritten it.

GeoServer’s current UI makes URL with absolute pathnames. So when it
sees that the request URL was http://localhost:8080/geoserver/Demo.do ,
It’ll return a page that has links to things like /geoserver/style.css

When the client takes this path from the returned webpage, and asks
Apache for http://yourhostname/geoserver/style.css , it’ll get a 404
because Apache doesn’t know what to do with it. This will happen with
images etc, so the UI becomes pretty useless.

Actually I believe Gabriel solved this issue months ago by creating
a proxy filter that rewrites the urls in the UI on the fly.
Not sure this is documented anywhere thought…

Cheers
Andrea

–
Andrea Aime
OpenGeo - http://opengeo.org
Expert service straight from the developers.

Message: 4
Date: Wed, 3 Dec 2008 22:11:02 +0530
From: “Indika Tantrigoda” <indika85@…84…>
Subject: Re: [Geoserver-users] Geoserver and NAT
To: “Andrea Aime” <aaime@…1671…>
Cc: geoserver-users <geoserver-users@lists.sourceforge.net>
Message-ID:
<4390fbee0812030841q7c86c4b3k7ec830c5e2c378ac@…85…>
Content-Type: text/plain; charset=“iso-8859-1”

Hi,

Thanks for all the info. Really appreciate it. I’ll follow up on this and
try to get
around the issue. I’d better check up on proxying with apache first.

Regards,
Indika

2008/12/3 Andrea Aime <aaime@…1671…>

Arne Kepp ha scritto:

Sure, it’s only a matter of concern for the user interface, for the
following reason:

If proxying is all setup, and you proxy,
http://yourhostname/some_other_name to http://localhost:8080/geoserver,

then your client makes a request for a page, say
http://yourhostname/some_other_name/Demo.do

But what GeoServer receives is a request for
http://localhost:8080/geoserver/Demo.do , since Apache has rewritten it.

GeoServer’s current UI makes URL with absolute pathnames. So when it sees
that the request URL was http://localhost:8080/geoserver/Demo.do , It’ll
return a page that has links to things like /geoserver/style.css

When the client takes this path from the returned webpage, and asks Apache
for http://yourhostname/geoserver/style.css , it’ll get a 404 because
Apache doesn’t know what to do with it. This will happen with images etc, so
the UI becomes pretty useless.

Actually I believe Gabriel solved this issue months ago by creating
a proxy filter that rewrites the urls in the UI on the fly.
Not sure this is documented anywhere thought…

Cheers
Andrea

–
Andrea Aime
OpenGeo - http://opengeo.org
Expert service straight from the developers.

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End of Geoserver-users Digest, Vol 31, Issue 6

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