CMK version: 2.1.0p27
OS version: Ubuntu 20.04
Command used for registration:
cmk-agent-ctl.exe register --hostname SRV001 --server <CHECK_MK_IP> --site mysite --user automation --password <PASSWORD>
Error message:
ERROR [cmk_agent_ctl] src\main.rs:29: Error pairing with <CHECK_MK_IP>:8000/mysite
Caused by:
Request failed with code 500 Internal Server Error: Internal Server Error
On my monitoring server I see the following entry in var/log/agent-receiver/error.log
requests.exceptions.ConnectionError: HTTPConnectionPool(host='localhost', port=5000): Max retries exceeded with url: /mysite/check_mk/api/1.0/root_cert (Caused by NewConnectionError('<urllib3.connection.HTTPConnection object at 0x7fdd4fdc0400>: Failed to establish a new connection: [Errno 111] Connection refused'))
What I’ve tried so far:
- Changed listener port 8000 to tcp4 (somehow, it was only running on tcp6)
- Created reverse proxy with apache that proxies to port 5000 (=aka where check_mk site is running on)
- Make sure port 5000 is only listening on localhost only (and not on 0.0.0.0)
- Tried registering with proxy, but I got the same error on the client when executing the command
- Make sure all necessary ports are open on both client & host + verify if agent is running (I also disabled FW on both but this did not make any difference)
So now I’m a bit stuck. I’m wondering what this error (max retries exceeded) really means. As you can see, I’ve tried a lot of things. Anything I can do to reset the counter or something else?