Re: Connection / Access / Strange Problems

I don't see good evidence of network connectivity in your knowns.

Can the hosts concerned actually ping each other?

Can you telnet to the IP:tcpport of the postgresql server from the source
host in question? If you can, do you see it in your logs?

You may wish to do other network connectivity tests. Perhaps there is a
firewall in between or your default route or network configuration is
incorrect.

HTH,
Link.

At 10:02 AM 1/7/03 -0600, Lowther, David W wrote:

>Hello List,
>
>I hope this is not posted in an inappropriate forum, but I have searched for
>a solution to this problem in both Mapserver and PostGIS forums / FAQs /
>websites / docs to no avail.
>
>I am running PostgreSQL 7.2.2 on i686-pc-linux-gnu, compiled by GCC gcc
>(GCC) 3.2 20020903 (Red Hat Linux 8.0 3.2-7).
>
>I am running WinNT4.0 IIS 4.0 web servers with Mapserver (have tried several
>versions).
>
>I have 2 web/mapserver servers (Intel WinNT4.0 IIS4.0) that access my
>Postgresql database. One is a test server (located in the same domain / ip
>range as the Postgresql server) and one is a live server (located in a
>separate domain / ip range from the Postgresql server). Using the same
>connection information in a mapfile the test server can access and map
>the Postgresql database with no problem - as could the live server when it
>was in the domain - but the live server fails to connect with an error
>(msPOSTGISLayerOpen(): Query error. Error parsing POSTGIS connection
>information.) now that it is outside the domain. I am stressing the domain /
>ip range issue here because I can't think of any other difference in the two
>servers.
>
>Here are knowns:
>
>- PGAdmin from the live server connects with no problem.
>- ODBC connectivity from the live server works fine.
>- The mapfiles on the test and live servers are identical except for
>necessary directory differences.
>- Checked password, hostname, connection type, socket connections enabled as
>instructed in debug version of Mapserver build, but if they work on the test
>server shouldn't they work on the live?
>- Added live server to pg_hba.conf although test server is not listed in
>pg_hba.conf and
>connects successfully:
> host all 216.226.17.176 255.255.255.0 trust
>- Initialize postmaster with -i option to allow tcp/ip connections.
>- tcpip_socket=true in postgresql.conf.
>- Tried using port=5432 in the CONNECTION param for mapfile - no difference
>in behaviour.
>
>As I watch the activity in a terminal (-d option to postmaster) I never see
>anything from the live webserver's attempts to connect. They aren't refused
>- they aren't getting there.
>
>Sorry for the long post and thanks in advance for any ideas or help,
>
>David Lowther
>Software Engineer
>GEO Information Systems
>University of Oklahoma
>dlowther(at)ou(dot)edu
>(405) 325-3131
>http://www.geo.ou.edu
>
>
>
>
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