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prometheus-grafana-demo

Goal: To create a demo grafana dashboard that pulls up prometheus metrics

Steps:

  1. Create a config map to store configuration values for grafana-datasource-config.yaml.

  2. Apply changes to the above file using below command:

kubectl create -f grafana-datasource-config.yaml

  1. Create a yaml file deployment.yaml for deploying grafana and another file named service.yaml to configure grafana service.

  2. After step 3, apply both to kubernetes cluster with the same command as of step 2.

  3. Refer to this image for the commands:

After these are done locally, use the kubectl port forwarding command to forward Grafana service to port 3000:

kubectl port-forward svc/grafana 3000

Now open a browser and navigate to http://localhost:3000/ and the grafana login screen appears.

Set up Grafana and start Prometheus locally to start collecting metrics.

This part of the dashboard shows us:

  • Target Scrapes: This pannel shows panel shows the frequency of scraping the target, i.e., Prometheus, measured over the last five minutes, per time series in the range vector.
  • Scrape Duration: This panel shows the duration of scrapes, measured over the same five-minute period.

This part of the dashboard shows:

  • Uptime: How much time has passed since the Prometheus server was started
  • Local Storage Memory Series: The number of series Prometheus currently holds in memory
  • Internal Storage Queue Length: The lower this number is the better. The ‘Empty’ message means the queue number is zero.

Finally, this is what we get at http://localhost:9090/metrics when we start prometheus!