Described options for HTTPS-connection makes it impossible to use the newly enhanced agent about checkmk-docs

[mschlenker]

Just a short answer here. If this does not provide the solution, please continue at https://forum.checkmk.com/

The first call is to detect the port of the agent receiver. Here the CMK server seems to use a certificate the client does not trust. You might just skip this call by appending the port (8000 for the first CMK site on a server) to the hostname of the CMK server. Then the agent receiver is directly addressed without doing the REST API call first.

We'll add this option to the troubleshooting section.

[mschlenker]

I've added a section describing how to specify the port via command line to skip the port discovery via Web API. Commit 1af0d42. Thanks for the hint.