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With Checkmk 2.1, we released the new agent controller with a TLS connection. Detailed docs can be found here:

Status
colourGreen
titleLAST TESTED ON CHECKMK 2.3.0P1


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Code Block
languagebash
themeRDark
root@mylinuxhost~# ss -tulpn | grep 6556  

root@mylinuxhost~# ps waux | grep cmk-agent-ctl   disable the login to this account

root@mylinuxhost~# cmk-agent-ctl status  

root@mylinuxhost~# systemctl status check-mk-agent.socket

root@mylinuxhost~# systemctl status cmk-agent-ctl-daemon.service

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This error occurs when the automation user, which is used internally by the agent controller to gather more information, doesn't have the admin role.

Cannot authenticate, invalid user/passwort/secret

If you see the error message Cannot authenticate, invalid user/passwort/secret when trying to register the agent controller, you can check a couple of things.

  1. It is obvious, but it needs to be said: Check whether the username and the password or the secret are correct.
  2. This error message can also be displayed when the option disable the login to this account is activated for this user. So please go to Setup > Users > Users in Checkmk and check if you see the following icon in the row for the user you are trying to authenticate with: Image Added
    In this case you have to edit the user and deactivate the checkbox in front of disable the login to this account.

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cqllabel in ( "agent" , "agent_controller" , "troubleshooting" ) and type = "page" and space = "KB"
labelsagent agent_controller

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