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Simple Kubernetes Setup via the CLI

Start your minikube cluster

$ minikube start
Starting local Kubernetes cluster...

Create a simple project

mkdir hello-node && cd hello-node && touch Dockerfile server.js

Update server.js

$ vi server.js
var http = require('http');
var handleRequest = function(request, response) {
  response.writeHead(200);
  response.end('Hello World!');
};
var helloServer = http.createServer(handleRequest);
helloServer.listen(8080);

Update Dockerfile

$ vi Dockerfile
FROM node:4.4
EXPOSE 8080
COPY server.js .
CMD node server.js

Build this

docker build -t hello-node:v1 .

Check that an image of it exists:

$ docker images
REPOSITORY                                            TAG                 IMAGE ID            CREATED             SIZE
hello-node                                            v1                  5cedec3d2f52        About an hour ago   647.4 MB

Deploy the hello-node pod to our local Kubernetes cluster via kubectl

$ kubectl run hello-node --image=hello-node:v1 --port=8080 --image-pull-policy=IfNotPresent
deployment "hello-node" created

Note: --image-pull-policy=IfNotPresent updates your image pull policy to source images locally, thus giving access to your locally created hello-node:v1. By default this flag is set to Never.

Expose this:

$ kubectl expose deployment hello-node --type=NodePort
service "hello-node" exposed

To see this working:

$ kubectl get services
NAME         CLUSTER-IP   EXTERNAL-IP   PORT(S)          AGE
hello-node   10.0.0.221   <nodes>       8080:30331/TCP   1h

Or open the dashboard to see it live there. Url can be obtained via:

$ minikube dashboard --url
http://192.168.99.100:30000