Build container with deployment on Kubernetes

build-run-push-docker-image.MD

Building the Docker image rest-rcherara"

$ docker build . -t rest-rcherara

List docker images

$ docker image ls
  REPOSITORY                                 TAG                 IMAGE ID            CREATED             SIZE
  rest-rcherara                              latest              845c64a35182        4 minutes ago       206MB

Run docker image

$ docker run -p 7680:7680 -it rest-rcherara

Push docker image to Docker Hub

$ docker login
$ docker tag 845c64a35182 mydockerreddah/rest-rcherara
$ docker push mydockerreddah/rest-rcherara    

Creating service, list all services and show service description on Kubernetes

$ kubectl create -f service.yml
$ kubectl get services --all-namespaces
$ kubectl describe service rest-example

Creating a deployment on Kubernetes

$ kubectl create -f deployment.yml
$ kubectl describe deployment rest-example
$ kubectl get pods

deployment.yaml

apiVersion: extensions/v1beta1
kind: Deployment
metadata:
  name: rest-example
spec:
  replicas: 1
  template:
    metadata:
      labels:
        app: rest-example
        tier: backend
    spec:
      containers:
      - name: rest-rcherara
        image: mydockerreddah/rest-rcherara
        imagePullPolicy: IfNotPresent
        resources:
          requests:
            cpu: 100m
            memory: 100Mi
        env:
        - name: GET_HOSTS_FROM
          value: dns
        ports:
        - containerPort: 7680

Dockerfile

FROM jeanblanchard/java:8
LABEL environement="dev" service="book" owner="rcherara"
LABEL Description="This image is used to start the rest-example executable" Vendor="API Books" Version="1.0"
MAINTAINER rcherara
WORKDIR /opt/rest-example/
COPY target/rest-example-0.1.0.jar rest-example-0.1.0.jar
CMD java -jar rest-example-0.1.0.jar
EXPOSE 7680

service.yaml

apiVersion: v1
kind: Service
metadata:
  name: rest-example
  labels:
    app: rest-example
    tier: backend
spec:
  type: NodePort
  ports:
    # the port that this service should serve on
  - port: 7680
  selector:
    app: rest-example
    tier: backend