This is The CHAOS MONKEY. It will kill your processes.
"What kills you, makes you stronger" -- The Chaos Monkey
The purpose of The Chaos Monkey is to find out if your system is
stable or not. What will your system do when things start to go wrong
and your processes die randomly? The Chaos Monkey will show you.
With a stick.
Start by including the chaos_monkey amongst your applications. The
Chaos Monkey sits in its cage and eats bananas. Let it out by running
chaos_monkey:on() or have him kill a single process using
chaos_monkey:kill(). More installation instructions can be found in