If you want to monitor the TLS specific or DNS Privacy specific features of a recursive server then there are a couple of options:
- A new tool getdns_server_mon is being developed which will provide output in both human readable and Nagios API compatible form. This tool was included in the 1.4.0 release of getdns.
- Stephane Bortzmeyer developed a standalone plugin based on getdns which inspired the above tool. His plugin is available here.