[mapserver-dev] Re: potential fcgi hang problem

[bartvde at osgis.nl]

An update on this issue, this was caused by running an old version (2.4.2)
of mod_fastcgi.

The latest version of mod_fastcgi ignores exitcode 0. So Mapserver does
not need any changes for this.

http://www.fastcgi.com/mod_fastcgi/fcgi_pm.c

                        if (s->directive == APP_CLASS_STANDARD) {
                            /* restart static app */
                            s->procs[i].state = FCGI_START_STATE;
                            if (exitStatus != 0) {
                                /* don't bump failure count on exit 0 */
                                s->numFailures++;
                            }
                        }

Best regards,
Bart

> Hi list,
>
> we are running Mapserver as a FCGI, and if someone tries an illegal mode
> or something similar, it will cause all the MS threads to hang. We are
> guessing this is because of the exit(0)'s in Mapserver's error handler.
>
> Is it possible for someone who is more knowledgeable to look into this?
> TIA.
>
> So e.g. trying a &mode=ma&layers=all request for about 10 times will cause
> everything to freeze up.
>
> What we get is:
>
> [Wed Jul 23 09:53:28 2008] [warn] FastCGI: (dynamic) server
> "/var/www/fcgi-bin/mapserv.fcgi" has failed to remain running for 30
> seconds given 3 attempts, its restart interval has been backed off to 600
> seconds
>
> [Wed Jul 23 10:04:11 2008] [warn] FastCGI: (dynamic) server
> "/var/www/fcgi-bin/mapserv.fcgi" (pid 32486) terminated by calling exit
> with status '0'
> [Wed Jul 23 10:04:11 2008] [warn] FastCGI: (dynamic) server
> "/var/www/fcgi-bin/mapserv.fcgi" has remained running for more than 30
> seconds, its restart interval has been restored to 1 seconds
>
> Best regards,
> Bart
>