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Project title: Linux admin needed to debug load problem
Posted by: External project from Upwork
Started: 22-May-2020 20:18 GMT
Description: I have a linux cPanel server on CentOS 7 which works fine.   It often becomes flooded with hits to Apache which slow it down heavily.  At least I think this is the reason.   I want to know exactly what I have to do to figure out where these load spikes come from and if from Apache which source IP address.  for example I might have a load value of "172.95 121.56 59.42" which is very very high, yet when I check the top processes I see nothing that is doing this:


5.4% is the highest CPU process?


USER       PID %CPU %MEM    VSZ   RSS TTY      STAT START   TIME COMMAND

mysql     1182  5.4  5.9 5314584 718948 ?      Sl   May20 132:51 /usr/sbin/mysqld --basedir=/usr --datadir=/var/lib/mysql --plugin-dir=/usr/lib64/mysql/plugin --log-error=core.extremehosting.ca.err --open-files-limit=20000 --pid-file=core.extremehosting.ca.pid

root     23876  3.6  0.1  69832 22576 ?        DN   13:10   0:00 cpanellogd - updating bandwidth

root     23832  1.0  0.1 708596 23440 ?        Sl   13:10   0:00 /opt/cpanel/ea-php56/root/usr/bin/php -Cq /apps/misc/heartbeat

root     23596  0.3  0.0 152776 10900 ?        D    13:09   0:00 /usr/local/cpanel/3rdparty/bin/perl /usr/local/cpanel/scripts/clean_user_php_sessions

root        17  0.2  0.0      0     0 ?        S    May20   6:41 [rcu_sched]

cpanels+  2504  0.2  0.8 6509024 102180 ?      Sl   May20   7:05 /usr/lib/jvm/jre-1.8.0/bin/java -server -Xms512m ...

root     23831  0.2  0.0 186216  8028 ?        S    13:10   0:00 /usr/local/cpanel/bin/dcpumon

root     24013  0.2  0.0  70420  3876 ?        S    13:10   0:00 dovecot/auth -w

root     24015  0.2  0.0 115748 11132 ?        D    13:10   0:00 cpsrvd (SSL) - waiting for connections                   

nscd       786  0.1  0.0 2818976 1280 ?        Ssl  May20   2:40 /usr/sbin/nscd

root     22962  0.1  0.0 178960  8028 ?        Ss   00:00   0:56 lfd - sleeping


I need to know how to find out exactly what is doing this and preferably how to block HTTP floods, I'm sure its port 80 thats doing it.

Budget: $20

Posted On: May 22, 2020 20:18 UTC
Category: System Administration
Skills:Linux System Administration

Skills: Linux System Administration
Country: Canada

click to apply
Project ID: 2991886
Project category: Linux System Administration
Project budget: $20
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