Plugin to report when site becomes unavailable I have a Craft installation on DigitalOcean, with the smallest package:

512MB Memory
1 Core Processor
20GB SSD Disk
1TB Transfer


I installed the default LAMP droplet.

PROBLEM:
MySQL crashes from time to time. There were no significant server load either.

What might be a root cause? 

Bonus question:

Is there a plugin that automatically reports when the site is down?
There's no plugin for that... it wouldn't quite make sense. If the site went down, the plugin would be down too.

Your best bet is to find a 3rd party service to monitor the site's uptime. There are several services which will alert (via text or email) if your site becomes unavailable. Here are a few examples...


Uptime Robot
New Relic
Pingdom