Minikube & Ozone

Requirements

  • Working minikube setup
  • kubectl

kubernetes/examples folder of the ozone distribution contains kubernetes deployment resource files for multiple use cases. By default the kubernetes resource files are configured to use apache/ozone image from the dockerhub.

To deploy it to minikube use the minikube configuration set:

  1. cd kubernetes/examples/minikube
  2. kubectl apply -f .

And you can check the results with

  1. kubectl get pod

Note: the kubernetes/examples/minikube resource set is optimized for minikube usage:

  • You can have multiple datanodes even if you have only one host (in a real production cluster usually you need one datanode per physical host)
  • The services are published with node port

Access the services

Now you can access any of the services. For each web endpoint an additional NodeType service is defined in the minikube k8s resource set. NodeType services are available via a generated port of any of the host nodes:

  1. kubectl get svc
  2. NAME         TYPE        CLUSTER-IP      EXTERNAL-IP   PORT(S)          AGE
  3. datanode     ClusterIP   None            <none>        <none>           27s
  4. kubernetes   ClusterIP   10.96.0.1       <none>        443/TCP          118m
  5. om           ClusterIP   None            <none>        9874/TCP         27s
  6. om-public    NodePort    10.108.48.148   <none>        9874:32649/TCP   27s
  7. s3g          ClusterIP   None            <none>        9878/TCP         27s
  8. s3g-public   NodePort    10.97.133.137   <none>        9878:31880/TCP   27s
  9. scm          ClusterIP   None            <none>        9876/TCP         27s
  10. scm-public   NodePort    10.105.231.28   <none>        9876:32171/TCP   27s

Minikube contains a convenience command to access any of the NodePort services:

  1. minikube service s3g-public
  2. Opening kubernetes service default/s3g-public in default browser...

Next >>