Apache/CenTOS white screen error

[flash10010]

Hi All

Can anyone help me, i'm losing my hair over this, I now look like this smilie . I use a CenTOS server running Apache and install OTRS onto it but OTRS works perfectly for an hour or so then starts to display the page as a white blank page, i have to stop and start Apache for it to work again.

Any help appreciated, Thanks

[keithf4]

Have you checked the apache server logs? If you haven't, might also help to configure the otrs site to write to its own log. I have mine set like this:

ErrorLog /var/log/apache2/otrs_error.log
LogLevel warn
CustomLog /var/log/apache2/otrs_access.log combined

Can change the log level to get more details if needed.

Also check the syslog if you've set the cron jobs to run.

[flash10010]

Thanks keithf4 for your fast reply.

I have checked Apaches access_log and error_log and can not find any errors that relate to this problem all seems fine with Apache, I have OTRS logging to a file and when i get the white page problem OTRS seems to stop writing to the log file as if it as stopped working.

[flash10010]

Update

Just noticed in the error_log when the problem occurs this line shows up:

[Tue Feb 1 16:38:46 2011] -e: print() on closed filehandle LOG at /opt/otrs//Kernel/Output/HTML/Layout.pm line 1540.

Any ideas?.

[ferrosti]

Have a look at this bugreport:
http://bugs.otrs.org/show_bug.cgi?id=5338

[flash10010]

Thanks ferrosti,

I am also running OCS on my server, looks like they don't like each other. Will have to wait and see if this gets fixed and install OTRS on a windows server and try that.

[TitovLab]

The problem is in OCS Inventory.
Just comment two strings in /usr/share/perl5/vendor_perl/Apache/Ocsinventory/Server/System.pm (or another dir there OCS-Server is installed):
# select(LOG);
# $|=1;
And restart web-server.
P.S.: OCS logs will continue work.