Very High CPU Usage o.O!

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Posted by David-, 04-08-2010, 05:31 PM
Hello, I'm not sure but you might wanna get some toilet roll as you might **** yourself when you see this. Ok, so my website was starting to run slowish and then MySQL failed. Backup in seconds. I logged into cPanel to check the server status and my chin dropped when i saw this; http://img301.imageshack.us/img301/6033/81839994.jpg What is the possible reasons it's like this? Edit, found problem - Client was CPU Hogging. Opened up his public_html and it contained a shell. His account was suspended . Pretty high though. Last edited by David-; 04-08-2010 at 05:38 PM.
Posted by Wamoc, 04-08-2010, 10:32 PM
Thanks for the warning at the start! You might want to remove the run permissions from all compilers (except for when updating software). I think there is also ways to remove permissions to open sockets (if it was listening on a port instead of just run from another shell), you might want to look into this as well.
Posted by gilbert, 04-08-2010, 10:36 PM
Jailed shells are also good. Also can easily monitor other activities on the server by typing the top command. I usually do it with a 100 second delay so it's not pushed to update like crazy like... top -d 100 Then just leave putty open all day and just monitor it on and off through the day.
Posted by Hostify Networks, 04-08-2010, 11:08 PM
That's nothing, lol. I regularly saw greater than 200 load at my last host.
Posted by Sileep Kumar M S, 04-10-2010, 07:09 AM
Keep checking the daily process log "WHM >> Daily process log". To check it via shell, use the command:
Posted by UNIXy, 04-10-2010, 08:37 AM
It's possible to prevent malicious scripts from being "uploaded" to user accounts. A few good security measures should do. Regards Joe / UNIXY