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Follow the error log of a Plesk domain live

harmless rootLogsdebian, ubuntu
Adjust the values, the command updates live
root@server
tail -f /var/www/vhosts/system/example.com/logs/error_log

Continuously prints every new line in the domain’s error_log; stop it with Ctrl+C. Best start the command and then open the failing page in the browser, so the matching message appears immediately. Depending on the PHP configuration, PHP errors and warnings end up there as well.

Note: On Plesk, nginx errors (for example 502 or upload limits) are logged separately in proxy_error_log in the same directory.

Also searched as

  • show plesk error log
  • where is the error log of my domain
  • watch errors live
  • find cause of 500 error plesk

Related one-liners

All in Logs

Follow a log file live and filter by keywords

#tail -f /var/log/syslog | grep --line-buffered -iE "error|warn|fail"
harmlessLogs

Follow the Plesk panel log in real time

#tail -f /var/log/plesk/panel.log
harmlessPlesk

Analyze server errors (5xx) in the access log

#awk '$9 ~ /^5[0-9][0-9]$/ {print $9, $7}' /var/www/vhosts/system/example.com/logs/access_ssl_log | sort | uniq -c | sort -rn | head -20
harmlessLogs

Find the domains with the most requests on Plesk

#wc -l /var/www/vhosts/system/*/logs/access_ssl_log 2>/dev/null | sort -rn | head -20
harmlessLogs

Find the top IP addresses in the access log

#awk '{print $1}' /var/www/vhosts/system/example.com/logs/access_ssl_log | sort | uniq -c | sort -rn | head -20
harmlessLogs

Show only error messages in the system journal

#journalctl -p err -b --no-pager
harmlessLogs

Read first, then run.

The commands on myline.de act directly on servers, files and databases. A wrong path or placeholder can delete data irreversibly or make a server unreachable.

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  • Understand what a command does before running it, and check every placeholder.
  • Make a backup first and, if possible, try it on a test system.
  • You run commands at your own risk. Liability for damages is excluded to the extent permitted by law.