title: AWS : How to troubleshoot unhealthy registered target in target group
body: <p>I setup my network load balancer and target group. 
  I associated master node private IP from my running instance to this new target group and registered there.</p>
  
  <p>It started with the 'initial' status and then after 5 mins, it turns to 'unhealthy' status.
  I am not able to find out why 'Health checks failed'. What stop the health check to be successful? </p>
  
  <p>I am using AWS GUI, not too much familiar with CLI. pls assist.</p>
  
  <p>More Info---</p>
  
  <p>Health check settings are:
   Protocol = HTTP
   Path = /
  rest all defaults</p>
  
  <p>Target group as follows: 
  Target type = ip
  Protocol : Port = TCP : 8998</p>
  
  <p>master node private IP is within the vpc and subnet</p>