Question
What should be performed if I receive a notification from Advanced Monitoring about critical disk usage:
CONFIG_TEXT: Advanced Monitoring
[Alerting] Partition “/” utilization
CONFIG_TEXT: Advanced Monitoring
[Alerting] Disk “C:” utilization
Answer
Such notification appears when system resource (Disk usage) reached value configured in Advanced Monitoring > Settings > Thresholds:
By default defined threshold value is 80%:
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There are two possible situations for this to appear:
- The partition (disk) utilization is expected but the threshold is set too low.
In this case increase threshold value for disk utilization in Advanced Monitoring > Settings > Thresholds and click Apply - The partition (disk) utilization is unexpected and requires additional actions:
Plesk for Linux:
The recommended way is to increase the disk space of the server and resize partitioning.
Warning: Disk partitioning is not covered by Plesk Technical Support. If you are not familiar with Linux system administering and would like Plesk professionals to handle this task, please contact Plesk Professional Services team.
If Plesk server is running in a Virtuozzo container (the file /proc/user_beancounters exists on the server) the inode limit can be increased as described in the Virtuozzo article. If you are a container owner, contact your service provider for assistance.
If Plesk server is running in a Vultr virtual machine, it is possible to resize the hard disk of the machine using this Vultr article.
Alternatively, try this:
- Allow Plesk remove unnecessary files. Enter https://203.0.113.2:8443/repair/ in browser searchbar, where 203.0.113.2 is Plesk server’s public IP, enter Plesk admin credentials and click on Free Up Disk Space
- Free up disk space by removing unnecessary files from the server:
In some cases, temporary files can take a significant amount of disk space on the server. Try to remove temporary files according to this KB article:
How to clean temporary Plesk files on a Linux server? - Find files and directories, that consuming a lot of space using the solution from this KB article:
How to find directories/files that take up the most disk space on a Plesk server -
Remove old backup files via a command-line interface:Â
How to remove Plesk backup files and their logs
Plesk for Windows:
- Allow Plesk remove unnecessary files. Enter https://203.0.113.2:8443/repair/ in browser searchbar, where 203.0.113.2 is Plesk server’s public IP, enter Plesk admin credentials and click on Free Up Disk Space
- Free up disk space by locating and removing unnecessary files. Use native Windows tools for that:
Enter the following in searchbar to locate files more that 2 Gigabytes:size:>2G
Use Windows Disk Cleanup tool: Using Disk Cleanup on Windows Server - Remove old backup files, use this KB articles for details:  How to remove Plesk backup files and their logs
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