Metrics

You can optionally setup prometheus and grafana for metrics.

We follow this tutorial here:

kubectl proxy # proxy to your kubernetes dashboard

helm repo list
# If using helm v3, the stable repository is not set, so you need to manually add it.
helm repo add stable https://kubernetes-charts.storage.googleapis.com
# Create a monitoring namespace for your cluster
kubectl create namespace monitoring
helm --namespace monitoring install prometheus stable/prometheus
kubectl -n monitoring get pods # look for 'server'
kubectl port-forward -n monitoring <PROMETHEUS_SERVER_ID> 9090
# You can now see your prometheus server on: http://localhost:9090

# Make sure you are in folder `deployment/`
kubectl apply -f monitoring/grafana/config.yml
helm --namespace monitoring install grafana stable/grafana -f monitoring/grafana/values.yml
# Get the admin password for grafana from your kubernetes dashboard.
kubectl --namespace monitoring port-forward <POD_NAME> 3000
# You can now see your grafana dashboard on: http://localhost:3000
# Login with user 'admin' and the password you just looked up.
# In your dashboard import this dashboard:
# https://grafana.com/grafana/dashboards/1860
# Enter ID 180 and choose "Prometheus" as datasource.
# You got metrics!

Now you should see something like this:

Grafana dashboard

You can set up a grafana dashboard, by visiting https://grafana.com/dashboards, finding one that is suitable and copying it's id. You then go to the left hand menu in localhost, choose Dashboard > Manage > Import Paste in the id, click Load, select Prometheus for the data source, and click Import

When you just installed prometheus and grafana, the data will not be available immediately, so wait for a couple of minutes and reload.