How do you prevent double monitoring when a Load Balancer load balances a Load Balancer? Using the NGINX Plus API we can leverage a BIG-IP to monitor the state of your applications and avoid monitoring your applications twice!
The Double Monitoring Problem
You decide on an architecture of having a BIG-IP load balance your NGINX Plus load balancer.
In this topology how does the BIG-IP know whether an application that is running behind NGINX Plus is “healthy”?
One solution is to configure both NGINX Plus and BIG-IP to monitor the health of the application. This leads into log entries on your backend server that look like the following: