CheckMK Agent Updater Registration

Troubleshooting
1

CMK version: 2.3.0p17.cee
**OS version: Windows Server 2022 Standard **

Error message: Response without json Content-Type
Cannot authenticate, invalid user/passwort/secret.

Hello,

i need here some advice with the register from the Agent Updater…

“C:\Program Files (x86)\checkmk\service\cmk-agent-ctl.exe” register --hostname HOSTNAME --server CHECKMKURL --site MYSITE --user agent_registration --password SECRET

cmk-agent-ctl.exe register:
Registration complete.

“C:\Program Files (x86)\checkmk\service\check_mk_agent.exe” updater register -s CHECKMKSERVERURL -i MYSITE -H HOSTNAME -U agent_registration -S SECRET -v

check_mk_agent.exe updater register:
`Successfully read C:\ProgramData\checkmk\agent\config\cmk-update-agent.state.
Successfully read C:\ProgramData\checkmk\agent\config\cmk-update-agent.cfg.
Updating the certificate store “C:\ProgramData\checkmk\agent\config\cas\all_certs.pem”…
Updated the certificate store “C:\ProgramData\checkmk\agent\config\cas\all_certs.pem” with 1 certificate(s)
Going to register agent at deployment server
Fetching content (using requests): https://URL/MYSITE/check_mk/register_agent.py
Response without json Content-Type
Cannot authenticate, invalid user/passwort/secret.

Everytime i try to use a secret the it shows the error above… i tested it with a adminuser and it worked properly…

Where is my mistake, can someone help me?

Thank you!

Kind regards

2

I think i fixed the issue, am i right that the user need administrator & automation user rights with configured secret?

3

No administrator rights.
It is enough to give the following three extra rights to the register role.

Register host & download monitoring agents of your hosts
Register all hosts & download monitoring agents
Use the GUI at all
1 Like
4

Hello Andreas,

i set both rules but it still dont work properly.

1

Agent registration is possible but the Agent Updater not.

2

:upside_down_face:

5

“Use the GUI at all” also set?

6

my mistake, i misunderstood the last rule… :grin:

Im already on my way home, ill test it later and give you feedback.

Thank you.

7

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