title: Running a Logstash Cluster behind AWS NLB
body: <p>Need to have a logstash cluster in autoscaling group behind a AWS NLB ; We have multiple pipelines in logstash serving multiple sources ; What is the best way to configure healthcheck for the logstash targets from AWS NLB .</p>
  <p>We want individual pipelines to be taken down as and when needed without impacting other pipelines.</p>
  <p>Can we use Logstash API Port 9600 asa healthcheck port from AWSNLB ? How to configure since logstash API Port always binds to loopback ; Any security concerns ?
  Any other optimal way to achieve the same</p>