https://github.com/saravanan81java/springboot_kubernetes

spring boot 2 kubernetes
https://github.com/saravanan81java/springboot_kubernetes

docker java kubernetes spring-boot

Last synced: 3 months ago
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spring boot 2 kubernetes

• Host: GitHub
• URL: https://github.com/saravanan81java/springboot_kubernetes
• Owner: saravanan81java
• Created: 2024-11-28T05:50:50.000Z (6 months ago)
• Default Branch: main
• Last Pushed: 2025-02-21T23:43:02.000Z (3 months ago)
• Last Synced: 2025-02-22T00:26:30.513Z (3 months ago)
• Topics: docker, java, kubernetes, spring-boot
• Language: Java
• Homepage:
• Size: 19.5 KB
• Stars: 1
• Watchers: 1
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md

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README

        

# Context

This is a POC to demonstrate how we can package and deploy a spring boot 2 based application to k8s. 

# Project structure

The project consiste of the following :

* Simple Spring boot 2 application, that expose a greeting endpoint.

* Dockerfile manifest to build the image

* deployment.yml manifest file for k8s resources definition (POD, SERVICE, PodDisruptionBudget)

### Reference Documentation

For further reference, please consider the following sections:

* [Kubernetes](https://kubernetes.io/)

* [Official Apache Maven documentation](https://maven.apache.org/guides/index.html)

* [Spring Boot](https://docs.spring.io/spring-boot/docs/{bootVersion}/reference/htmlsingle/#production-ready)

# Deploy the spring application to kubernetes - Steps :

* Build the demo spring boot application - docker image

    > mvn clean install \

    > docker build -t demo:0.1.0 .

* Push the built docker image to your own docker repository

    > docker images \

    > docker login \

    > docker push (your_repo_name)/demo-k8s:0.3.0

* Install minikube in your computer using these instructions - https://kubernetes.io/docs/tasks/tools/install-minikube/

* Start the minikube in your local machine

    > minikube start

* Create the deployment in kubernetes - it helps to pull the spring boot demo app docker images and deploy in K8S.

    > kubectl create -f deployment.yml # your application will be deployed in kubernetes

* View the container status

    > kubectl get pods

* To get the external Ip for accessing your application, please run

    > kubectl get svc

    > minikube tunnel

* Access your deployed spring boot application in kubernetes

    > curl (external-ip)/hello

* To view the kubernetes setup

    > minikube dashboard