Service httpd auto stop

AppleH · 04-23-2011, 01:17 PM

Hi all,
I have VPS and run a website. But every random 10-20 minutes service httpd stop.

My VPS: 768 MB RAM

Quote:

[root@vps ~]# service httpd status
httpd dead but pid file exists
[root@vps ~]#

Error log:

Quote:

[Sat Apr 23 20:44:57 2011] [notice] Digest: done
[Sat Apr 23 20:44:57 2011] [notice] Apache/2.2.3 (CentOS) configured -- resuming normal operations
[Sat Apr 23 20:45:02 2011] [error] server reached MaxClients setting, consider raising the MaxClients setting
[Sat Apr 23 21:09:42 2011] [notice] caught SIGTERM, shutting down
[Sat Apr 23 21:09:44 2011] [notice] suEXEC mechanism enabled (wrapper: /usr/sbin/suexec)
[Sat Apr 23 21:09:44 2011] [notice] Digest: generating secret for digest authentication ...
[Sat Apr 23 21:09:44 2011] [notice] Digest: done
[Sat Apr 23 21:09:44 2011] [notice] Apache/2.2.3 (CentOS) configured -- resuming normal operations
[Sat Apr 23 21:21:07 2011] [notice] caught SIGTERM, shutting down
[Sat Apr 23 21:21:09 2011] [notice] suEXEC mechanism enabled (wrapper: /usr/sbin/suexec)
[Sat Apr 23 21:21:09 2011] [notice] Digest: generating secret for digest authentication ...
[Sat Apr 23 21:21:09 2011] [notice] Digest: done
[Sat Apr 23 21:21:09 2011] [notice] Apache/2.2.3 (CentOS) configured -- resuming normal operations
[Sat Apr 23 21:27:28 2011] [error] server reached MaxClients setting, consider raising the MaxClients setting
[Sat Apr 23 21:31:23 2011] [notice] caught SIGTERM, shutting down
[Sat Apr 23 21:31:24 2011] [notice] suEXEC mechanism enabled (wrapper: /usr/sbin/suexec)
[Sat Apr 23 21:31:24 2011] [notice] Digest: generating secret for digest authentication ...
[Sat Apr 23 21:31:24 2011] [notice] Digest: done
[Sat Apr 23 21:31:24 2011] [notice] Apache/2.2.3 (CentOS) configured -- resuming normal operations
[Sat Apr 23 21:32:03 2011] [notice] caught SIGTERM, shutting down
[Sat Apr 23 21:32:04 2011] [notice] suEXEC mechanism enabled (wrapper: /usr/sbin/suexec)
[Sat Apr 23 21:32:04 2011] [notice] Digest: generating secret for digest authentication ...
[Sat Apr 23 21:32:04 2011] [notice] Digest: done
[Sat Apr 23 21:32:04 2011] [notice] Apache/2.2.3 (CentOS) configured -- resuming normal operations
[Sat Apr 23 21:36:32 2011] [error] server reached MaxClients setting, consider raising the MaxClients setting
[Sun Apr 24 00:48:32 2011] [notice] suEXEC mechanism enabled (wrapper: /usr/sbin/suexec)
[Sun Apr 24 00:48:32 2011] [notice] Digest: generating secret for digest authentication ...
[Sun Apr 24 00:48:32 2011] [notice] Digest: done
[Sun Apr 24 00:48:32 2011] [warn] pid file /etc/httpd/run/httpd.pid overwritten -- Unclean shutdown of previous Apache run?
[Sun Apr 24 00:48:32 2011] [notice] Apache/2.2.3 (CentOS) configured -- resuming normal operations
[Sun Apr 24 00:48:55 2011] [error] server reached MaxClients setting, consider raising the MaxClients setting

Help me plz

. Thanks

acid_kewpie · 04-23-2011, 02:40 PM

Not sure if it's directly related, but you're hitting a maxclients limit very clearly... why? Under powered / poorly configured system, or being DDOS'd or similar? Fix that and other more obscure things may well go away. Fix it properly though... don't just make the error message go away.

AppleH · 04-23-2011, 09:43 PM

Thank you acid_kewpie.
This is file httpd.conf

...
<IfModule prefork.c>
StartServers 8
MinSpareServers 5
MaxSpareServers 20
ServerLimit 500
MaxClients 500
MaxRequestsPerChild 4000
</IfModule>

<IfModule worker.c>
StartServers 2
MaxClients 150
MinSpareThreads 25
MaxSpareThreads 75
ThreadsPerChild 25
MaxRequestsPerChild 0
</IfModule>

...
Can you help me resolve this problem?
Thank you.

acid_kewpie · 04-24-2011, 03:01 AM

Not from that. Are you using prefork of worker? you need to understand WHY you are exceeding the number of connections. are you getting flooded? I could never tell that from some config settings. the /server-status page might help you if it's enabled.