[rt-users] RT/Apache suddenly hangs

Torsten Brumm torsten.brumm at googlemail.com
Fri Feb 2 10:31:15 EST 2007


Hi Tomas,

yes, we have exactly the same under RHAS4 with Apache, FastCGI and mysql....
but we have to restart 4 times the day :-(

Torsten

2007/2/2, Tomas Olaj <tomas.olaj at usit.uio.no>:
>
>
> System:
> =======
> Red Hat Enterprise Linux WS release 3 (Taroon Update 8)
> RT 3.6.1
> Apache v2.0.59
> Perl 5.8.7
> mod_fcgi-2.4.2
> Postgres 8.1.4
>
> Approximately 80.000 tickets.
>
> Problem:
> ========
> RT/Apache suddenly becomes unavailable/hangs (normaly once a day), and
> requires Apache restart so RT can work again.
>
> We are not sure what causes the problem, and if others have similar
> problems, we would be gladly to hear about it!
>
> List of processes running and load on server:
> =============================================
> # ps aux | grep apache
> root     22066  0.0  0.0  7964 3360 ?        S    Feb01   0:08
> /local/opt/apache2/bin/httpd -k start -DSSL
> nobody   13898  0.0  0.0  7964 3320 ?        S    03:59   0:00
> /local/opt/apache2/bin/fcgi- -k start -DSSL
> nobody   21699  0.0  0.0  8216 3832 ?        S    14:02   0:00
> /local/opt/apache2/bin/httpd -k start -DSSL
> nobody   22628  0.0  0.0  8216 3840 ?        S    14:14   0:00
> /local/opt/apache2/bin/httpd -k start -DSSL
> nobody   22648  0.0  0.0  8216 3840 ?        S    14:15   0:00
> /local/opt/apache2/bin/httpd -k start -DSSL
> nobody   22650  0.0  0.0  8216 3820 ?        S    14:15   0:00
> /local/opt/apache2/bin/httpd -k start -DSSL
> nobody   22939  0.0  0.0  8252 3756 ?        S    14:18   0:00
> /local/opt/apache2/bin/httpd -k start -DSSL
> nobody   22941  0.0  0.0  8216 3848 ?        S    14:18   0:00
> /local/opt/apache2/bin/httpd -k start -DSSL
> nobody   22945  0.0  0.0  8216 3804 ?        S    14:18   0:00
> /local/opt/apache2/bin/httpd -k start -DSSL
> nobody   22953  0.0  0.0  8216 3756 ?        S    14:18   0:00
> /local/opt/apache2/bin/httpd -k start -DSSL
> nobody   22955  0.0  0.0  8216 3796 ?        S    14:18   0:00
> /local/opt/apache2/bin/httpd -k start -DSSL
> nobody   22959  0.0  0.0  8216 3812 ?        S    14:19   0:00
> /local/opt/apache2/bin/httpd -k start -DSSL
> nobody   22961  0.0  0.0  8216 3800 ?        S    14:19   0:00
> /local/opt/apache2/bin/httpd -k start -DSSL
> nobody   22962  0.0  0.0  8216 3788 ?        S    14:19   0:00
> /local/opt/apache2/bin/httpd -k start -DSSL
> nobody   22965  0.0  0.0  8236 3804 ?        S    14:19   0:00
> /local/opt/apache2/bin/httpd -k start -DSSL
> nobody   22966  0.0  0.0  8216 3788 ?        S    14:19   0:00
> /local/opt/apache2/bin/httpd -k start -DSSL
> nobody   22967  0.0  0.0  8216 3812 ?        S    14:19   0:00
> /local/opt/apache2/bin/httpd -k start -DSSL
> nobody   23217  0.0  0.0  8228 3792 ?        S    14:21   0:00
> /local/opt/apache2/bin/httpd -k start -DSSL
> nobody   23218  0.0  0.0  8228 3744 ?        S    14:21   0:00
> /local/opt/apache2/bin/httpd -k start -DSSL
> nobody   23219  0.0  0.0  8244 3740 ?        S    14:21   0:00
> /local/opt/apache2/bin/httpd -k start -DSSL
> nobody   23224  0.0  0.0  8232 3768 ?        S    14:21   0:00
> /local/opt/apache2/bin/httpd -k start -DSSL
> nobody   23225  0.0  0.0  8216 3752 ?        S    14:21   0:00
> /local/opt/apache2/bin/httpd -k start -DSSL
> nobody   23230  0.0  0.0  8228 3776 ?        S    14:22   0:00
> /local/opt/apache2/bin/httpd -k start -DSSL
> nobody   23240  0.0  0.0  8220 3780 ?        S    14:22   0:00
> /local/opt/apache2/bin/httpd -k start -DSSL
> nobody   23241  0.0  0.0  8220 3740 ?        S    14:22   0:00
> /local/opt/apache2/bin/httpd -k start -DSSL
> nobody   23242  0.0  0.0  8248 3728 ?        S    14:22   0:00
> /local/opt/apache2/bin/httpd -k start -DSSL
> nobody   23250  0.0  0.0  8216 3732 ?        S    14:22   0:00
> /local/opt/apache2/bin/httpd -k start -DSSL
> nobody   23254  0.0  0.0  8216 3744 ?        S    14:22   0:00
> /local/opt/apache2/bin/httpd -k start -DSSL
> nobody   23255  0.0  0.0  8216 3732 ?        S    14:22   0:00
> /local/opt/apache2/bin/httpd -k start -DSSL
> nobody   23286  0.0  0.0  8216 3772 ?        S    14:22   0:00
> /local/opt/apache2/bin/httpd -k start -DSSL
> nobody   23290  0.0  0.0  8216 3760 ?        S    14:23   0:00
> /local/opt/apache2/bin/httpd -k start -DSSL
> nobody   23292  0.0  0.0  8248 3724 ?        S    14:23   0:00
> /local/opt/apache2/bin/httpd -k start -DSSL
> nobody   23294  0.0  0.0  8216 3764 ?        S    14:23   0:00
> /local/opt/apache2/bin/httpd -k start -DSSL
> nobody   23299  0.0  0.0  8108 3696 ?        S    14:23   0:00
> /local/opt/apache2/bin/httpd -k start -DSSL
> nobody   23326  0.0  0.0  8108 3672 ?        S    14:25   0:00
> /local/opt/apache2/bin/httpd -k start -DSSL
> nobody   23327  0.0  0.0  8108 3708 ?        S    14:25   0:00
> /local/opt/apache2/bin/httpd -k start -DSSL
> nobody   23328  0.0  0.0  8216 3696 ?        S    14:25   0:00
> /local/opt/apache2/bin/httpd -k start -DSSL
> nobody   23336  0.1  0.0  8248 3744 ?        S    14:25   0:00
> /local/opt/apache2/bin/httpd -k start -DSSL
> nobody   23337  0.0  0.0  8108 3692 ?        S    14:25   0:00
> /local/opt/apache2/bin/httpd -k start -DSSL
> nobody   23338  0.0  0.0  8108 3680 ?        S    14:25   0:00
> /local/opt/apache2/bin/httpd -k start -DSSL
> nobody   23339  0.0  0.0  8108 3692 ?        S    14:25   0:00
> /local/opt/apache2/bin/httpd -k start -DSSL
> nobody   23352  0.0  0.0  8236 3712 ?        S    14:25   0:00
> /local/opt/apache2/bin/httpd -k start -DSSL
> nobody   23353  0.0  0.0  8236 3720 ?        S    14:25   0:00
> /local/opt/apache2/bin/httpd -k start -DSSL
> nobody   23354  0.0  0.0  8236 3712 ?        S    14:25   0:00
> /local/opt/apache2/bin/httpd -k start -DSSL
> nobody   23355  0.0  0.0  8236 3712 ?        S    14:25   0:00
> /local/opt/apache2/bin/httpd -k start -DSSL
> nobody   23356  0.0  0.0  8236 3716 ?        S    14:25   0:00
> /local/opt/apache2/bin/httpd -k start -DSSL
> nobody   23358  0.0  0.0  8236 3716 ?        S    14:25   0:00
> /local/opt/apache2/bin/httpd -k start -DSSL
> nobody   23557  0.1  0.0  8108 3708 ?        S    14:25   0:00
> /local/opt/apache2/bin/httpd -k start -DSSL
> nobody   23558  0.0  0.0  8108 3656 ?        S    14:25   0:00
> /local/opt/apache2/bin/httpd -k start -DSSL
> nobody   23559  0.0  0.0  8108 3656 ?        S    14:25   0:00
> /local/opt/apache2/bin/httpd -k start -DSSL
> nobody   23560  0.0  0.0  8108 3692 ?        S    14:25   0:00
> /local/opt/apache2/bin/httpd -k start -DSSL
> nobody   23561  0.0  0.0  8108 3672 ?        S    14:25   0:00
> /local/opt/apache2/bin/httpd -k start -DSSL
> nobody   23562  0.0  0.0  8108 3660 ?        S    14:25   0:00
> /local/opt/apache2/bin/httpd -k start -DSSL
> nobody   23563  0.0  0.0  8108 3660 ?        S    14:25   0:00
> /local/opt/apache2/bin/httpd -k start -DSSL
> root     23569  0.0  0.0  1616  468 pts/0    S    14:26   0:00 grep apache
>
>
>
> # uptime
>   14:26:08  up 45 days, 22:31,  2 users,  load average: 8.14, 8.23, 8.01
>
> It normaly spaws 5 Apache processes when starting. Here, it's unusual many
> processes.
>
> Apache logs messages as before and even rt.log logs as nothing has
> happened.
>
> Apache is normaly restarted once a night, due to memory leek which
> Mason/Perl/FastCGI is responsible for in some strange way. But this should
> not be the problem here.
>
> I noticed that there was a mail-loop from a spam, that looped in the same
> time-frame as the server suddenly stopped. But I cannot draw any
> connections between those problems. I cannot find anything directly in the
> logs that says some problems/alerts with Apache. It just hang, and needs a
> restart.
>
> How can I debug and find out what's wrong? Is there some kind of diffuse
> searches in RT that causes hang (search bug) ... that may be fixed in
> 3.6.3 or... the release of 3.6.3 was quite fast after 3.6.2.
>
> Sincerely,
> Tomas
>
> --
> ________________________________________________________________________
> Tomas A. P. Olaj, email: tomas.olaj at usit.uio.no, web: folk.uio.no/tomaso
>   University of Oslo / USIT (Center for Information Technology Services)
>     System- and Application Management / Applications Management Group
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>



-- 
MFG

Torsten Brumm

http://www.torsten-brumm.de
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