Demo project

• Java with Spring Boot
• Apache Maven project
• Working with Docker
  • Dockerfile
  • Docker compose
• Working with Kubernetes
  • Pod
  • Service
  • Deployment

1. Working with Apache Maven

$mvnw clean package
$java -jar target/hello-0.0.1-SNAPSHOT.jar

Call APIs

• http://localhost:8080/
• http://localhost:8080/actuator/health

2. Working with Docker

• OpenJDK

Build image

$docker image build --progress=plain -t somkiat/hello-spring:1.0 .
$docker image ls

Create container

$docker container run -d -p 8080:8080 somkiat/hello-spring:1.0

Call APIs

• http://localhost:8080/
• http://localhost:8080/actuator/health

3. Working with Docker compose

Building image

$docker-compose -f docker-compose-build.yml build --progress=plain
$docker image ls

Create container

$docker-compose -f docker-compose-deploy.yml up -d
$docker-compose -f docker-compose-deploy.yml ps

NAME                                 COMMAND                  SERVICE             STATUS              PORTS
hello-java-docker-kunernetes-api-1   "java -cp app:app/li…"   api                 running             0.0.0.0:8080->8080/tcp

Call APIs

• http://localhost:8080/
• http://localhost:8080/actuator/health

Push docker image to Docker Hub

$docker login
$docker image push somkiat/hello-spring:1.0

4. Working with Kubernetes

• Kubectl

$kubectl apply -f k8s
$kubectl get all