(CoreOS eng here) We no longer have a Chaos Monkey. Since the beta release, the "Chaos Monkey" can be disabled via configuration. See the "reboot-strategy:" in this post. This is the recommended way to do that:<p><a href="http://coreos.com/blog/coreos-beta-release/" rel="nofollow">http://coreos.com/blog/coreos-beta-release/</a>