Problem description

In scenarios where Cloud Cache/PBS root directory is 100 percent utilized resulting in service halt.
We can free up some space to ensure PBS/CloudCache is up and running.
These steps could be helpful when it would take some time to increase disk space causing delay in operation.
This is a temporary solution, while adding space would be necessary in a longer run.

Resolution

Systemd has its own logging system called the journal, and the log files are stored in /var/log/journal. As long as we don’t need the logs for any debugging, it’s safe to delete the older ones.

• Navigate to the following path:
  /var/log/journal
• Check how much space is being utilized by these journal logs by typing the following command:
  du -sh
• Clear the journal logs by choosing one of following commands:
  • Delete journal logs older than X days:
    sudo journalctl --vacuum-time=2days
  • Delete log files until the disk space taken falls below the specified size:
    sudo journalctl --vacuum-size=100M
  • Delete old logs and limit file number to X:
    sudo journalctl --vacuum-files=5
• You can also edit the configuration file to limit the journal log disk usage (100 MB for example).
  • Navigate to the path  /etc/systemd/journald.conf
    sudo vi /etc/systemd/journald.conf
  • Add SystemMaxUse=50M to the end of the configuration file:
    SystemMaxUse=50M
  • Write out and close the file:
    :wq
• Restart the journald service:
  systemctl restart systemd-journald