Howtoforge published a tutorial about installing  Checkmk on Ubuntu 22.04.

How to Install and Monitor Servers with Checkmk on Ubuntu 22.04

Checkmk is a server and application monitoring software written in Python and C++. It supports the monitoring of servers, applications, networks, containers, and clouds. It has a wide range of features, including, automated monitoring, agentless monitoring via HTTP/SNMP, over 1900 plugins to collect data, detailed network traffic analysis, customizable dashboards, and Grafana support.

How to Install and Monitor Servers with Checkmk on Ubuntu 22.04