2 ms·
Step 1: Setting up the spring boot application - Goto https://start.spring.io/ https://start.spring.io/ and fill in the following details for spring boot applic
by rahulwagh17 6y ago
Step 1: Setting up the spring boot application - Goto https://start.spring.io/ https://start.spring.io/
and fill in the following details for spring boot application –
Group – com.jhooq
Artifacts – Jhooq-k8s
Project – Gradle Project
Packaging – Jar
Java – 11
Step 2: Import the spring boot project into your intellij or any other IDE(eclipse or netbeans...)
Step 3: Build your microservice
package com.jhooq.Jhooqk8s.ws;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RestController;
@RestController
public class JhooqController {
@GetMapping("/hello")
public String hello() {
return "Hello - Jhooq-k8s";
}
}
Gradle build
$ ./gradlew build
BUILD SUCCESSFUL in 6s
5 actionable tasks: 5 executed
Step 4: Test the rest webserive - $ curl http://localhost:8080/hello http://localhost:8080/hello
Hello - Jhooq-k8s
Step 5: Create Dockerfile for spring boot application
FROM openjdk:8-jdk-alpine
ARG JAR_FILE=build/libs/*.jar
COPY ${JAR_FILE} app.jar
ENTRYPOINT ["java","-jar","/app.jar"]
Step 6: Create Docker registry at “https://hub.docker.com/“ https://hub.docker.com/“
Step 7: “docker build” && “docker push image”
$ docker build -t jhooq-k8s-springboot .
$ docker tag jhooq-k8s-springboot rahulwagh17/kubernetes:jhooq-k8s-springboot
$ docker push rahulwagh17/kubernetes:jhooq-k8s-springboot
Step 8: Start kubernetes cluster - https://jhooq.com/kubespray-12-steps-for-installing-a-production-ready-kubernetes-cluster/ https://jhooq.com/kubespray-12-steps-for-installing-a-produc...
Step 9: Deploy Spring Boot microservices on kubernetes
$ kubectl create deployment demo --image=rahulwagh17/kubernetes:jhooq-k8s-springboot
$ kubectl expose deployment demo --type=LoadBalancer --name=demo-service --external-ip=1.1.1.1 --port=8080
$ kubectl get service
$ curl http://100.0.0.2:31901/hello http://100.0.0.2:31901/hello