title: AWS Cloud Watch Alarms -- Multiple Instances Per Alarm
body: <p>Perhaps I'm misunderstanding how to use AWS Cloudwatch alarms but I don't seem to be able to add an alarm to multiple EC2 instances.  I created an alarm that would send a notification if CPUUtilization > 70 and added it to a single EC2 instance... which is great.  However, I needed to add a second EC2 node to the ELB and tried to add the created alarm to that instance as well and I can't figure out how to do it.  I'd rather not have to create another alarm measuring the exact same metric for every instance I create.   What am I missing?  Is there an easier way to do what I'm trying to do?</p>
  
  <p>What I'm trying to do is create a 'EC2 CPU Utilization' alarm, and reuse this for all my EC2 instances I have deployed.</p>