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Get a disk utilization report in Backdrop's status report and a cron-triggered e-mail warning when locally mounted disk space on your Backdrop server reaches a preset threshold.

The alert e-mail uses the following template:

Alert: {hostname} is {percent}% full

Running out of space {mount} ({percent}% used, {space} avail)
on {hostname} for {site_name}

Requires df, grep, and awk to be in the global server $PATH available for PHP to use.

Built for and tested with Debian, Ubuntu 12.04, Ubuntu 14.04, and Mac OSX. Diskfree does not work reliably on Ubuntu 8.04. Most Linux-style environments should work, but only the aforementioned are officially supported.

Diskfree is a component of the classic CIA information security triad: confidentiality, integrity and availability. A full disk partition can halt a web server and cause data corruption. From Wikipedia:

For any information system to serve its purpose, the information must be
available when it is needed. This means that the computing systems used to
store and process the information, the security controls used to protect it,
and the communication channels used to access it must be functioning
correctly. High availability systems aim to remain available at all times,
preventing service disruptions due to power outages, hardware failures, and
system upgrades.

If you prefer, you could also just copy a bash script in your /usr/local/bin and install a crontab to do the same thing, except that it would only alert by email.

Current Maintainer

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License

This project is GPL v2 software. See the LICENSE.txt file in this directory for complete text.