In the manual for Docker installation the port for agent authentication (8000) is missing.
The instruction for the Docker command reads like:
docker container run -dit -p 8080:5000 --tmpfs /opt/omd/sites/cmk/tmp:uid=1000,gid=1000 -v monitoring:/omd/sites --name monitoring -v /etc/localtime:/etc/localtime:ro --restart always checkmk/check-mk-raw:2.0.0-latest
Should be:
docker container run -dit -p 8080:5000 -p 8000:8000 --tmpfs /opt/omd/sites/cmk/tmp:uid=1000,gid=1000 -v monitoring:/omd/sites --name monitoring -v /etc/localtime:/etc/localtime:ro --restart always checkmk/check-mk-raw:2.0.0-latest
Without the defintion of Port 8000 agents aren’t able to connect with cmk.
Running into SSL Handshake error or connection timeout.
See: SSL Handshake Fehler bei Registrierung des Agenten (GERMAN)
Chris