Learning OpenStack Networking - Third Edition

Observing health monitors

A packet capture on web1 reveals that the load balancer is performing TCP health checks every 5 seconds:

In the preceding output, the load balancer is initiating a connection every 5 seconds and performing the health check prescribed by the health monitor: "a GET request: against/".

To observe the monitor removing a pool member from eligibility, stop the web service on web1 and observe the packet captures on web1 and logs on the controller node:

In the preceding output, the web service is stopped and connections to ...