Checkmk Kubernetes Cluster and Node Collectors

Checkmk cluster and node collectors to monitor Kubernetes clusters.

• Free software: GNU General Public License v2

Features

• Officially supports vanilla Kubernetes installations. Unofficially also works on other flavors (e.g. AWS EKS, AKS, GKE).
• Supports Kubernetes version 1.21 to 1.23
• Works with Docker and containerd
• Uses cAdvisor to collect container metrics

• Runs the following objects on your cluster:

  • node collector:

    • runs as a DaemonSet on every node that has kubelet configured
    • uses cAdvisor to collect container metrics and fowards them to the cluster collector
    • uses a Checkmk agent to collect machine sections and forwards them to the cluster collector

  • cluster collector:

    • runs as a Deployment
    • receives metrics from every node collector instance on the cluster and stores them in memory
    • runs an API that provides these metrics
    • can be configured to run the API in http or https mode

• Supports PodSecurityPolicy and NetworkPolicy

Installation

Please use the Helm charts provided in deploy/charts/checkmk or the manifests in deploy/kubernetes. You will find detailed installation instructions there.