[postgis-users] Mapserver and Postgis

Tue Mar 28 13:47:13 PST 2006

Is that machine your workstation or the webserver?  If its not the
webserver, then are you able to do the same test when logged in on the
webserver?

What does  your pg_hba.conf on your postgresql server look like?  This
by default is in the data directory of your postgresql server.  As
Gregory mentioned this controls what computers are allowed to connect to
the postgresql daemon.

-----Original Message-----
From: postgis-users-bounces at postgis.refractions.net
[mailto:postgis-users-bounces at postgis.refractions.net] 
Sent: Tuesday, March 28, 2006 11:50 AM
To: PostGIS Users Discussion
Subject: Re: [postgis-users] Mapserver and Postgis

Obe,

Fortunately I have psql here in my machine and I tryed to connect using
it.

The connection was ok with your parameters psql -U postgres 
machine.domainmachine db

Have you any suggestion ?

Ezequias

Obe, Regina DND\MIS escreveu:
> Ezequias,
>
> Then I guess one thing to try would be connect into your webserver via

> ssh or some other means and then do a ping on your postgresql server. 
> That may not work depending on whether pinging is blocked or not.
>
> If you had a psql client on the webserver or can easily put one on, 
> then you can do more indepth analysis. With something like below
>
> psql -h myserver.mydomain.com mydb
>
> Also you said you logged in using ssh from your local computer to the 
> postgresql server.  Did you try connecting to the postgresql server 
> via the psql client from your local pc.  Just because you can ssh into

> the postgresql server doesn't necessarily mean postgres daemon is 
> listening on a TCP/IP port.
>
>
>
>
>
>
>
> -----Original Message-----
> From: postgis-users-bounces at postgis.refractions.net
> [mailto:postgis-users-bounces at postgis.refractions.net]
> Sent: Tuesday, March 28, 2006 8:37 AM
> To: PostGIS Users Discussion
> Subject: Re: [postgis-users] Mapserver and Postgis
>
>
> Yes, I have a root account on webserver.
>
> Best regards...
> Ezequias
>
> Obe, Regina DND\MIS escreveu:
>   
>> It could be that your webserver doesn't allow outbound connections on
>> 5432 because it has a firewall in front blocking.  As Greg mentioned 
>> it sounds like you aren't connecting at all.
>>
>> Do you have root access to your webserver?
>>
>> -----Original Message-----
>> From: postgis-users-bounces at postgis.refractions.net
>> [mailto:postgis-users-bounces at postgis.refractions.net]
>> Sent: Tuesday, March 28, 2006 8:02 AM
>> To: PostGIS Users Discussion
>> Subject: Re: [postgis-users] Mapserver and Postgis
>>
>>
>> Gregory,
>> Many thanks but there is notthing on the  postgresql-Tue.log :-( .
>>
>> I can start and stop the postgresql without problem. I use postmaster
>> -D
>>
>> way.
>>
>> Another thing. How can I ping using mapserver ?
>> Another thing2:I can log to postgis using ssh connection (as root and

>> after as postgres user). Another thing3:There is no password to 
>> postgis ( linux )user. The postgis (database) user has yes a password

>> (and I used on the map
>>     
> file)
>   
>> I hope  you could understand my enviroment.
>>
>> Ezequias
>>
>> Gregory S. Williamson escreveu:
>>   
>>     
>>> Ezequias --
>>>
>>> What does the postgres log say ? That's a good place to start 
>>> debugging this.
>>>
>>> The text that you quoted has several very good suggestions; assuming

>>> that the connection string seems rational to you, i.e. user,
>>>       
> password,
>   
>>>     
>>>       
>>   
>>     
>>> server and database are all sane, I would suggest making sure that
>>> you
>>>     
>>>       
>>   
>>     
>>> can can ping the postgres server from the mapserver ... if so
>>>
>>> Check the postgres log and see if it is refusing the connection. if
>>> it
>>>     
>>>       
>>   
>>     
>>> is you need to add the postgres user (not a great idea to exposte 
>>> the DBA account as a working account, but that's another issue) and 
>>> the
>>>       
> IP
>   
>>>     
>>>       
>>   
>>     
>>> address to the .hba file on the postres server. That file controls
>>> who
>>>     
>>>       
>>   
>>     
>>> can connect and can't; it is in the root of the directory the
>>> postgres
>>>     
>>>       
>>   
>>     
>>> database was created in.
>>>
>>> If there is nothing in the log I'd suspect the TCP issue, or some 
>>> routing issue since postgres will write a useful message if an 
>>> un-authorized user tries to connect. Presumably the postgres user 
>>> has
>>>       
>
>   
>>> permissions to connect to the database and access the tables.
>>>
>>> It is possible the postgres instance was not started with the proper

>>> to allow TCP/IP connections; that is controlled by the script that 
>>> starts the postgres database. I'm not sure if the error log would
>>>       
> show
>   
>>>     
>>>       
>>   
>>     
>>> anything in this case.
>>>
>>> HTH, post back your results and maybe others can help more.
>>>
>>> Greg Williamson
>>> DBA
>>> GlobeXplorer LLC
>>> -----Original Message-----
>>> From:	postgis-users-bounces at postgis.refractions.net on behalf
>>>       
> of
>   
>>>     
>>>       
>> Ezequias Rodrigues da Rocha
>>   
>>     
>>> Sent:	Tue 3/28/2006 4:35 AM
>>> To:	PostGIS Users Discussion
>>> Cc:	
>>> Subject:	[postgis-users] Mapserver and Postgis
>>>
>>> Hi list,
>>>
>>> I don't know if this is a off-topic, but as nobody from mapserver 
>>> could solve my problem I will report to you now.
>>>
>>> I am trying to connect my mapserver project to PostGIS but my 
>>> browser
>>>       
>
>   
>>> always report the folowing error:
>>> msDrawMap(): Image handling error. Failed to draw layer named
>>>     
>>>       
>> 'bairros'.
>>   
>>     
>>> msPOSTGISLayerOpen(): Query error. couldnt make connection to DB 
>>> with connect string 'user=postgres password=***** dbname=db 
>>> host=xxx.xxx port=5432'. Error reported was 'could not create 
>>> socket: Permission denied '. This error occured when trying to make 
>>> a connection to the specified postgresql server.
>>> Most commonly this is caused by
>>> (1) incorrect connection string
>>> (2) you didnt specify a 'user=...' in your connection string
>>> (3) the postmaster (postgresql server) isnt running
>>> (4) you are not allowing TCP/IP connection to the postmaster
>>> (5) your postmaster is not running on the correct port - if its not
>>>       
> on
>   
>>>     
>>>       
>>   
>>     
>>> 5432 you must specify a 'port=...'
>>> (6) the security on your system does not allow the webserver 
>>> (usually user 'nobody') to make socket connections to the postmaster
>>> (7) you forgot to specify a 'host=...' if the postmaster is on a
>>> different machine
>>> (8) you made a typo
>>>
>>> Could someone help me. As simple as possible would be very glad.
>>>
>>> Sincerely...
>>>
>>>   
>>>     
>>>       
>>   
>>     
>
>   

-- 
Ezequias Rodrigues da Rocha
http://ezequiasrocha.blogspot.com
msn:ezequias at hotmail.com
"the worst of democracies is still better than the best of dictatorship"

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