title: Monitor memory usage for auto scaling group
body: <p>I have an auto scaling group of instances in Amazon cloud and I want to monitor some metrics across all instances in auto-scaling group.</p>
  
  <p>For example it would be nice to have a metric which reports the maximum memory usage across all instances that belong to the group. Thus I would have an opportunity to detect memleaks.</p>
  
  <p>I know that I can monitor a group via load balancer's metrics, but I don't have one and don't want to.</p>
  
  <p>Group metrics described on this page <a href="http://docs.aws.amazon.com/cli/latest/reference/autoscaling/enable-metrics-collection.html" rel="nofollow">http://docs.aws.amazon.com/cli/latest/reference/autoscaling/enable-metrics-collection.html</a> are also not suitable.</p>