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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.
Project ID:
2991886
Project category:
Linux System Administration
Project budget:
$20
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