Re: [mapserver-users] MapServer as fast-cgi

Sun, 30 May 2010 11:47:47 -0700 

Hi,
I'm not sure your apache config is correct. Setting a specific alias for the default cgi-bin dir and using the alias as a specific Location can maybe give troubles. Maybe the default cgi-bin is applying first and your Location is not used at all. 

My sunday 2 cents

Guillaume

Le 30/05/2010 17:44, [email protected] a écrit :

Hi Lars, also working on a sunday :-)

Thank you very much for your reply.

The fcgid-module is enabled/installed.


I changed the pathes in the pathes you use,
in the access.log of apache is written:



131.173.59.53 - - [30/May/2010:17:31:55 +0200] "GET
/blabla/blabla/Testkarte12752335142537.jpg HTTP/1.1" 200 26397
"http://www.mydomain.de/fcgi-bin/mapserv?map=/my_path/mapdatei.map"; 
"Mozilla/5.0 (Windows; U; Windows NT 5.1; de; rv:1.9.2.3)
Gecko/20100401 Firefox/3.6.3 GTB7.0 ( .NET CLR 3.5.30729)"

...what looks quite good I think.

If I restart apache I get:


[Sun May 30 17:35:25 2010] [notice] mod_fcgid: process 
/blabla/cgi-bin/mapserv(2537) exit(shutting down), terminated by calling 
exit(), return code: 0
[Sun May 30 17:35:26 2010] [notice] Apache/2.2.9 (Debian) PHP/5.2.6-1+lenny8 
with Suhosin-Patch configured -- resuming normal operations

....but I don`t get something like:

[Sun May 30 16:38:27 2010] [info] mod_fcgid: server
/var/www/clients/client1/web1/fcgi-bin/mapserv(21099) started


----

With fcgi your MapServer processes will stay in memory. You should see
them within "top" even when the map is already delivered. And with
CLOSE_CONNECTION=DEFER you can then reuse database connections which in
turn will make your application faster.


I`m not sure if I understand. What do you mean with:
"You should see them within "top" even when the map is already delivered."

And  can`t I check it with the "Debug 5" in the log-file?

Thank you very much, Kai
-------- Original-Nachricht --------

Datum: Sun, 30 May 2010 16:47:24 +0200
Von: Lars Lingner<[email protected]>
An: [email protected]
Betreff: Re: [mapserver-users] MapServer as fast-cgi



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On 30.05.2010 16:10, Kai Behncke wrote:

Dear users,


I try to set up Mapserver with fast-cgi, but so far it doesn`t work as

it should do

(well I think it doesn`t, I`m also not so sure how to test ist).

* I have succesfully compiled MapServer 5.6.3 with fast-cgi (on Debian

5.0)


* Apache runs with mod_fcgid

* In the mapfile I have implemented in the layers  "PROCESSING

"CLOSE_CONNECTION=DEFER"


But some steps I don`t understand:

In the apache-conf I set:



ScriptAlias /fcgi-bin/ "/etc/apache2/cgi-bin/mapserv"
<Location "/fcgi-bin">
Options +ExecCGI -MultiViews +SymLinksIfOwnerMatch
SetHandler fcgid-script
Order allow,deny
Allow from all
#FastCgiConfig -initial-env PROJ_LIB=/usr/share/proj -initial-env

#LD_LIBRARY_PATH=/usr/lib:/usr/local/lib:/usr/local/pgsql/lib #-appConnTimeout 
60
-idle-timeout 60 -init-start-delay 1  -minProcesses 2 #-maxClassProcesses
30 -startDelay 5


</Location>


a) If I comment in FastCGIConfig ...... I always get from the Apache:
"Invalid command 'FastCgiConfig', perhaps misspelled or defined by a

module not included...." ??


What might be the reason for that?


Does Apache load the fcgid module?
You can check in /etc/apache2/mods-enabled if its enabled

and in /etc/apache2/mods-available if its installed

Or check the error.log of apache:
[Sun May 30 16:38:27 2010] [info] mod_fcgid: server
/var/www/clients/client1/web1/fcgi-bin/mapserv(21099) started


I have the following config:

ScriptAlias /fcgi-bin/ "/path/to/fcgi-bin/"

<Location "/fcgi-bin">
     SetHandler fcgid-script
     Options None
     Order allow,deny
     Allow from all
</Location>

my /etc/apache2/mods-enabled/fcgid.conf looks like this:

<IfModule mod_fcgid.c>
   AddHandler    fcgid-script .fcgi
   IPCConnectTimeout 20
</IfModule>





b) I start the Apache without the "FastCGIConfig" in the

apache-conf-file

  and I run the MapServer as:

http://www.xyz.de/fcgi-bin/?map=/path_to_my/mapfile.map

...this should be the way to run MapServer as fast-cgi, shouldn`t it?


Hmm. I defined the scriptalias as path to the fcgi directory and not to
the binary. So the request URL is something like this:

http://example.org/fcgi-bin/mapserv?map...&;...

But I don't know if your way might also be ok.




c) I thought, if I run MS with "Debug 5" the layers should be produced

much faster, right?

But the log-file doesn`t show any difference betwenn MS as cgi or fcgi,

this might be because of

the missing FastCgiConfig in Apache, right?



With fcgi your MapServer processes will stay in memory. You should see
them within "top" even when the map is already delivered. And with
CLOSE_CONNECTION=DEFER you can then reuse database connections which in
turn will make your application faster.


Lars
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