Automatic Agent Updater not updating, no error

[aquila]

CMK version: Checkmk Managed Services Edition 2.2.0p21
OS version: Ubuntu 22.04.3 LTS

Error message: no error

Hello, we have deployed agents with the automatic agent updater plugin. Some of the agents are checking in and updating as expected, while others check in and download new agent versions but do not install them:

Since there is no error message i am not sure what the problem is?

[aeckstein (Andre Eckstein)]

Hi,

i think the interesting part is the last contact (42h).
If your update interval is not higher than that (what i don´t think ) , then the agent updater plugins are not talking to the checkmk server any more. These contact the checkmk server via http or https (whatever you configured) in the configured interval to check, if new packages are available.
This might be because of the following reasons:

• the checkmk server is not reachable via http/s by the monitored host (Firewall, Routing)
• the checkmk server is not DNS resolvable by the clients (if using the dns name of the checkmk server in the plugin configuration)
• The agent updater plugin is not working correctly
• The updater plugin was unintentionally uninstalled with a wrong package configuration
• The operating system of the hosts is old (e.g) 2008 R2 and the needed python dependencies are not present in the build MSI package

You can test DNS and https connections to the checkmk server on one of the clients and you can manually start the agent updater plugin to see what problem is:

"C:\Program Files (x86)\checkmk\service\check_mk_agent.exe" updater -v