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Force log rotation immediately

caution rootLogsdebian, ubuntu

Caution: This command changes the system. Understand what it does before you run it.

Adjust the values, the command updates live
root@server
logrotate -vf /etc/logrotate.d/nginx

-f forces the rotation regardless of the conditions in the configuration, and -v shows each step. Useful for testing a new configuration for real or for shrinking an oversized log right away. This also runs the postrotate scripts, which usually reload a service.

Note: Depending on the rotate value, the oldest rotated file is dropped. Check beforehand with logrotate -d what would happen.

Also searched as

  • rotate log now
  • run logrotate manually
  • rotate log file immediately
  • logrotate force

Related one-liners

All in Logs

Find the largest log files on the server

#du -ah /var/log 2>/dev/null | sort -rh | head -20
harmlessLogs

Search rotated and compressed logs too

#zgrep -h "Out of memory" /var/log/syslog*
harmlessLogs

Test a logrotate configuration without rotating

#logrotate -d /etc/logrotate.d/nginx
harmlessLogs

Analyze disk usage interactively with ncdu

$ncdu -x /var
harmlessFilesystem

Calculate the total size of all files of one type

$find /var/www/vhosts/example.com/httpdocs/wp-content/uploads -type f -iname '*.mp4' -printf '%s\n' | awk '{s+=$1; n++} END {printf "%d Dateien, %.1f MB\n", n, s/1048576}'
harmlessFilesystem

Check inode usage of filesystems

$df -ih -x tmpfs -x devtmpfs -x squashfs
harmlessFilesystem

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.

  • All commands are provided without warranty and are not tested on every system.
  • 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.