This tutorial is a continuation of our previous tutorial, Here we will learn about register spring boot micro-services to eureka discovery

If you want to learn about eureka please refer my previous post https://beginnersbug.com/create-netflix-eureka-discovery-server-using-spring-boot/

Prerequisite

JDK
Eclipse
Spring boot micro service knowledge
Netflix Eureka knowledge

Annotation used to register

@EnableDiscoveryClient

Dependency

<parent>                                                                
  <groupId>org.springframework.boot</groupId>                           
  <artifactId>spring-boot-starter-parent</artifactId>                   
  <version>2.2.6.RELEASE</version>                                      
  <relativePath /> <!-- lookup parent from repository -->               
</parent> 

<dependency>                                                            
  <groupId>org.springframework.cloud</groupId>                          
  <artifactId>spring-cloud-starter-netflix-eureka-client</artifactId>   
</dependency> 

<dependency>                                                            
  <groupId>org.springframework.boot</groupId>                           
  <artifactId>spring-boot-starter-web</artifactId>                      
</dependency>

<dependencyManagement>                                                  
  <dependencies>                                                        
    <dependency>                                                        
      <groupId>org.springframework.cloud</groupId>                      
      <artifactId>spring-cloud-dependencies</artifactId>                
      <version>${spring-cloud.version}</version>                        
      <type>pom</type>                                                  
      <scope>import</scope>                                             
    </dependency>                                                       
  </dependencies>                                                       
</dependencyManagement>

application.properties

server.port=8080
spring.application.name=student
eureka.client.registerWithEureka=true
eureka.client.fetchRegistry=true
eureka.client.serviceUrl.defaultZone=http://localhost:8761/eureka

Main Class

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.cloud.client.discovery.EnableDiscoveryClient;

@SpringBootApplication
@EnableDiscoveryClient
public class StudentApplication {

	public static void main(String[] args) {
		SpringApplication.run(StudentApplication.class, args);
	}
}

Register spring boot

Time needed: 30 minutes

Steps

Create a spring boot application
Use https://start.spring.io/ to create spring boot application
Add Dependency
Add eureka discovery client and spring web dependency in the text box
Click on the generate
Once you clicked Generate you project will download
Import into your IDE
Import the downloaded project into your IDE. Here I used eclipse IDE for my development
Add @EnableDiscoveryClient annotation
Once you imported you project in IDE, Go to the Main class and add @EnableDiscoveryClient annotation.
This annotation will register spring boot micro-services to eureka discovery
change application.properties
eureka.client.registerWithEureka=true
eureka.client.fetchRegistry=true
eureka.client.serviceUrl.defaultZone=http://localhost:8761/eureka
Build and Run
Now you can run your application
Testing
Open browser and navigate to http://localhost:8761/
You can see your student micro service under Instances

Exception

In case if you didn’t configure the properties properly, you might get below exception.

TransportException: Cannot execute request on any known server

Solution

Confirm below property in your application.properties

eureka<span class="token punctuation">.</span>client<span class="token punctuation">.</span>serviceUrl<span class="token punctuation">.</span>defaultZone<span class="token operator">=</span>http<span class="token operator">:</span><span class="token operator">/</span><span class="token operator">/</span>localhost<span class="token operator">:</span><span class="token number">8761</span><span class="token operator">/</span>eureka

Make sure your discovery server is running on http://localhost:8761

Github

https://github.com/rkumar9090/student

create netflix eureka discovery server using spring boot