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Friday, 6 September 2019

Prometheus & Grafana - Monitoring in Kubernetes

Prometheus & Grafana - Monitoring in Kubernetes

Monitoring how much resources your server(s) and how much resources your apps are using is easier then ever with Prometheus and Grafana. In this tutorial i will show you how to do this on a Kubernetes cluster.

To make this as easy as possible I created a Helm chart that deploys Prometheus and Grafana together, it uses local storage instead of a volume from a cloud vendor. The only preperations you need to do is create the directories on the Kubernetes node you plan to deploy this on.

I created this because i use K3S for some of my Kubernetes setups and I run them on non cloud vendors, so this is perfect for that, “On-prem” servers or vendors that dont have cloud volumes.


  • Kubernetes cluster
  • Helm (Tiller installed on Kubernetes cluster)

Step 1 - Preperations.

  1. SSH into the server you plan to deploy Prometheus & Grafana too.

  2. Create the directories needed, paths for this can be changed to whatever you supply in values.yaml.

     $ mkdir -p /myvolumes/prometheus/alertmanager
     $ mkdir -p /myvolumes/prometheus/pushgateway
     $ mkdir -p /myvolumes/prometheus/server

Step 2 - Deploy the helm chart.

  1. Clone this repo to your computer (not the server): https://github.com/pixelpiloten/prometheus

  2. Deploy the helm chart.

     $ helm install --name pixelpiloten_prometheus . -f values.yaml
  3. Check that all the pods for Prometheus and Grafana are deployed and up and running.

     $ kubectl -n monitoring get pods
  4. Create a port-forward to the Grafana Service, port 8080 can be whatever port you want.

     $ kubectl -n monitoring port-forward svc/grafana 8080:80
  5. Now you can access the Grafana web GUI in your browser.


You now have installed Prometheus and Grafana and can get started creating Dashboards or import existing ones from https://grafana.com/grafana/dashboards to monitor everything from your Kubernetes nodes and applications running in it.

My Grafana dashboard monitoring Kubernetes node resources