title: How to Monitor AWS Network Load Balancer its always run but when its Not working get Alert?
body: <p>In AWS account Ubuntu EC2 with private Ip and one Network load balancer(need public Ip for that Machine)  and open 4 TCP Port in target group (3 show healthy and 1 unhealthy)
  I know its possible using AWS cloudwatch but which metrics should i used any one port is healthy in target group its show healthy and if all port unhealthy then get alert</p>