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Debian 11 is approaching its end-of-life (vendor EOL date - August 31, 2026). Plesk Obsidian 18.0.80 will be the last release to support it.
If you are running Plesk Obsidian on Debian 11, we recommend you upgrade those servers to Debian 12 using our dist-upgrade tool.
Issue Apache CPU usage 576.7 %
- Thread starter Kingsley
- Start date
To tackle this, first get a list of Apache processes
# ps aux | grep httpd (or # ps aux | grep apache, depending on OS)
In that list identify the processes with the highest CPU usage. Then look into what the process is doing:
# strace -p <PID>
(<PID> = process ID)
The process will normally show some hints what domain is causing the high load.
Then look into the access_log and error_log file of that domain to identify what is causing the load. Normally it is either a bad bot or a brute force attack.
# ps aux | grep httpd (or # ps aux | grep apache, depending on OS)
In that list identify the processes with the highest CPU usage. Then look into what the process is doing:
# strace -p <PID>
(<PID> = process ID)
The process will normally show some hints what domain is causing the high load.
Then look into the access_log and error_log file of that domain to identify what is causing the load. Normally it is either a bad bot or a brute force attack.
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