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I have a server with a partition that contains all the uploaded files from my users... It gets empty after the files received are send to the CDN.

Everything works. But I am worried that one day the partition might get full.

My first question is:

What happens when a Linux (Ubuntu 12) hard drive partition is full?

Is there a way that if my hard drive as certain amount of space on it, a script is executed? Maybe a Hook? So that I can stop my users from uploading for a certain amount of time.

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Which, if any, system monitoring tools do you use? – jscott Jan 27 '13 at 20:01
up vote 1 down vote accepted

A simple thresholding tool like Monit would provide quick drop-in alerting for system resources.

It's well-supported, stable and is covered heavily here on Server Fault.

The examples in the documentation would work for what you're trying to do.

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What about zabbix? – jnbdz Jan 27 '13 at 20:21
Zabbix is fine. I recommended Monit because it's lightweight and can install in a few minutes. Zabbix, ZenOSS, OpenNMS, etc. are all more involved. – ewwhite Jan 27 '13 at 20:22

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