+- ispCP - Board - Support (http://www.isp-control.net/forum)
+-- Forum: ispCP Omega Support Area (/forum-30.html)
+--- Forum: Usage (/forum-34.html)
+--- Thread: high load (/thread-5631.html)
Pages: 1 2
RE: high load - laddu - 02-06-2009 09:24 PM
Could you think this could be DDoS ? And any way to see if indeed it is ?
RE: high load - laddu - 02-07-2009 12:00 AM
I think this is caused by php-cgi. I currently use fcgid
My conf
Code:
LoadModule fcgid_module modules/mod_fcgid.so
<IfModule mod_fcgid.c>
AddHandler fcgid-script .php .php5
SocketPath /var/run/mod_fcgid/sock
IPCConnectTimeout 90
IdleTimeout 300
IdleScanInterval 120
ProcessLifeTime 900
MaxProcessCount 200
DefaultMinClassProcessCount 1
DefaultMaxClassProcessCount 5
IPCCommTimeout 300
BusyTimeout 300
BusyScanInterval 120
ErrorScanInterval 3
MaxRequestsPerProcess 500
ZombieScanInterval 3
DirectoryIndex index.php
</IfModule>From ps aux|grep php-cgi I have at least 500 php-cgi processes. I have to kill them all, restarting apache does not work.
Please some suggestion ?
RE: high load - ephigenie - 02-07-2009 12:23 AM
Please post your fastcgi.conf / ispcp_fastcgi.conf / ispcp_fcgid.conf
or whatever fastcgi modul you use here.
RE: high load - laddu - 02-07-2009 01:41 AM
I am using fcgid and the conf is above (file : /etc/httpd/conf.d/fcgid_ispcp.conf)
Post it again
Code:
cat /etc/httpd/conf.d/fcgid_ispcp.conf |grep -v ^#
LoadModule fcgid_module modules/mod_fcgid.so
<IfModule mod_fcgid.c>
AddHandler fcgid-script .php .php5
SocketPath /var/run/mod_fcgid/sock
IPCConnectTimeout 90
IdleTimeout 300
IdleScanInterval 120
ProcessLifeTime 900
MaxProcessCount 200
DefaultMinClassProcessCount 1
DefaultMaxClassProcessCount 5
IPCCommTimeout 300
BusyTimeout 300
BusyScanInterval 120
ErrorScanInterval 3
MaxRequestsPerProcess 500
ZombieScanInterval 3
DirectoryIndex index.php
</IfModule>Please give me some help
------
LE: I noticed that a process called diff is loading 89% of memory. After I kill diff everything comes back to normal
LLE: and this is the process:
Code:
ps aux |grep diff
root 14433 0.0 0.0 2404 516 ? S 18:02 0:00 sh -c /usr/bin/diff -a /var/log/ispcp/maillog /var/log/ispcp/maillog.prev | /bin/egrep '^<' | /bin/sed 's/^< //' 1> /var/log/ispcp/maillog.diff
root 14434 4.8 66.7 2340452 1384864 ? D 18:02 0:04 /usr/bin/diff -a /var/log/ispcp/maillog /var/log/ispcp/maillog.prevRE: high load - laddu - 02-07-2009 03:35 AM
Code:
top - 19:33:33 up 1 day, 4:20, 2 users, load average: 13.03, 5.36, 6.31
Tasks: 265 total, 1 running, 264 sleeping, 0 stopped, 0 zombie
Cpu(s): 0.0%us, 1.7%sy, 0.0%ni, 6.6%id, 91.5%wa, 0.1%hi, 0.2%si, 0.0%st
Mem: 2074936k total, 2021580k used, 53356k free, 3640k buffers
Swap: 2031608k total, 1303272k used, 728336k free, 476548k cached
PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
229 root 10 -5 0 0 0 S 4 0.0 54:06.17 kswapd0
8693 root 18 0 2299m 1.3g 348 D 2 67.8 0:04.55 diff
17761 apache 18 0 12724 2580 1528 S 0 0.1 0:00.07 httpd
18730 root 15 0 2320 1128 804 R 0 0.1 0:00.04 topFrom my understanding this diff script backing up maillog. I do not want to do this, how can I stop it ?
RE: high load - laddu - 02-07-2009 07:08 PM
BUMP
How can I stop this backup ? Please give me a suggestion. My server is overloaded and all the sites are retunrning Internal Server error 500
RE: high load - pgentoo - 02-09-2009 01:45 PM
I found similar issues with fastcgi php processes as you've mentioned, however not to the same extent because I only have a few domains on the server currently. However, with a max children setting of 3 in my fcgi starter script, i'd check and see 20 some processes for a single site.
It looks like there is a bug with php when setting this value, in that if the process has an error, it gets orphaned and not cleaned up properly.
I decided to comment out the lines in the fcgi starter script, and run just on the global settings in mod_fcgid settings. This works perfect for me, and i haven't seen any errors caused by the changes yet.
Maybe give that a try...
RE: high load - laddu - 02-10-2009 10:53 PM
Could you please be more specific? Where and waht changes I should make ?
Regards
RE: high load - pgentoo - 02-10-2009 11:39 PM
I documented my findings/changes in another thread. Check it out: http://isp-control.net/forum/showthread.php?tid=5613
Hopefully this helps.
-
pGentoo