Problems registering the host for communication via TLS

Troubleshooting
1

Hi,

if I would like to register my server in CheckMK in order to communicate via TLS, I get an error message. I am not sure how to handle this. Does anyone have any ideas?

Thank you very much!

CMK version: Checkmk Raw Edition 2.3.0p22
OS version: Ubuntu 22.04.5 LTS"

Error message:

INFO [cmk_agent_ctl] starting
INFO [cmk_agent_ctl] Loaded config from '"/var/lib/cmk-agent/cmk-agent-ctl.toml"', connection registry from '"/var/lib/cmk-agent/registered_connections.json"'
INFO [cmk_agent_ctl::site_spec] Failed to discover agent receiver port using https.
INFO [cmk_agent_ctl::site_spec] Failed to discover agent receiver port using http.
ERROR [cmk_agent_ctl] Failed to discover agent receiver port from Checkmk REST API, both with http and https. Run with verbose output to see errors.

But:
/var/lib/cmk-agent/cmk-agent-ctl.toml: No such file or directory

On Monitoring Server:
tcp LISTEN 0 2048 *:8000 *:* users:(("gunicorn: worke",pid=1705,fd=7),("gunicorn: maste",pid=1685,fd=7)) uid:999 ino:13513 sk:6 cgroup:/system.slice/check-mk-raw-2.3.0p22.service v6only:0 <->

2

Could you share the command used for the TLS registration?

3

Sorry, forgot to post the command:

cmk-agent-ctl -v register --hostname prod002**** --server MONITORING_SERVER_IP --site ***** --user automation

User setting:

image
image967×802 51.6 KB

I’am using 2FA, btw.

4

I was now planning to un-register and re-register the agent.
To do this:

But I don’t even see the UUID:

Version: 2.3.0p22
Agent socket: operational
IP allowlist: any
Legacy mode: enabled
No connections```
5

Any idea here? Unfortunately I didn’t get any further.

6

Hello, unfortunately nothing works for me. Can anyone here help me? I have tried to re-register the server cleanly.

7

Do you get again the error message that the agent registration port cannot be found?
If yes you can try to add this port to the registration command.