Disk usage dashboard widget for Craft

This plugin adds a new widget type that can be added to the Craft CMS dashboard.
The widget simply displays the disk usage on your server.

Requirements

This plugin requires Craft CMS 3.7.0 or later (it may work with previous 3.x versions, but I haven't tested, and you'll need to tweak the composer.json file).

Installation

The plugin can be installed from the integrated plugin store by searching for "Disk usage dashboard widget" or using Composer:

1. Open your terminal and navigate to your Craft project:

   cd /path/to/project
   

2. Then tell Composer to load the plugin:

   composer require nstcactus/craft-disk-usage-widget
   

3. Finally, install and enable the plugin:

   ./craft plugin/install disk-usage-widget
   ./craft plugin/enable disk-usage-widget
   

Usage

After the plugin has been installed, widgets can be added to the dashboard.
Several instances of the widget may be added, each one monitoring the disk usage of a partition.

Classic mode

The classic way of determining disk usage leverages the disk_free_space() & disk_total_space() PHP functions. You need to provide the path to a directory in the disk partition you want to monitor. The default value is the path to the Craft CMS webroot, which is a reasonable value.

In that mode, you may set Soft limit. If the disk usage exceeds that limit, the widget indicator will turn red.

Quotas mode

Some hosting providers use disk quotas, especially on shared hosting.

In such cases, the disk usage reported by the widget may be wrong. You can try enabling The server uses disk quotas setting to circumvent this. When enabled, the widget will try to use the quota -s shell command to get the disk usage.

For this to work, your hosting provider has to let you use either the proc_*() or the exec() PHP functions. PHP must also run as the UNIX user the disk quota is set on.

You need to select the partition to monitor in the Partition field. If no partitions are available the Partition dropdown, you're out of luck…

Some hosting providers set the quota & limit to the same value. You can override the soft limit if you need to know when you're almost out of space.