title: What good alternatives are there to Copperegg for monitoring EC2 instances?
body: <p>I've been using Copperegg for a while now and have generally been happy with it until lately, where I have had a few issues. It's being used to monitor a number of EC2 instances that must be up 24/7. </p>
  
  <p>Last week I was getting phantom alerts that servers had gone down when they hadn't, which I can cope with, but also I didn't get an alert when I should have done. One server had high CPU for over 5 mins when the alert should be triggered after 1 minute. The Copperegg support weren't not all that helpful, merely agreeing that an alert should have been triggered.  </p>
  
  <p>The latter of those problems is unacceptable and if it were to happen again outside of working hours then serious problems will follow. </p>
  
  <p>So, I'm looking for alternative services that will do that same job. I've looked at Datadog and New Relic, but both have a significant problem in that they will only alert me of a problem 5 minutes after it's occurred, rather than the 1 minute I can get with Copperegg. </p>
  
  <p>What else is out there that can do the same job and will also integrate with Pager Duty? </p>