I am investigating to have a huge cluster of Nifi instances distributed across the world. I have been told that Metrics Monitor and Metrics Collector are using a very chatty protocol, so Ambari Metrics Collector may face some serious performance issues regarding receiving telemetry information from lots of Metrics Monitor Agents. I have two concerns as follows.
1- How does it scale for thousands of agents?
2- Can I use it over WAN probably by securing that in a two-way SSL way?