📊 Checkmk

Description

Checkmk is a comprehensive infrastructure monitoring system focused on servers, network devices, and hardware.
It provides agent-based monitoring, SNMP support, alerting, and detailed system insights.

Website

https://checkmk.com

Kubernetes Notes

Runs as a stateful monolithic application
Requires persistent volume (/omd/sites)
Not horizontally scalable → use 1 replica only
Prefer running outside Kubernetes (VM or dedicated host)
If deployed in K8s:
- Disable aggressive restarts (slow startup)
- Use NodePort/Ingress for web UI
Best suited for external infrastructure monitoring, not cluster internals