SpringCloud Netflix Eureka Sunucu u@EnableEurekaServer Anotasyonu - Eureka Sunucusunu Başlatır

Giriş
Şu satırı dahil ederiz

import org.springframework.cloud.netflix.eureka.server.EnableEurekaServer;

Euraka'ya alternatif olarak Spring Cloud Consul kullanılabilir. Şeklen şöyle

Açıklaması şöyle.

If your infrastructure is not based on any popular Cloud environment but you still want to take advantage of the dynamic discovery rather than static IP configuration, you can set up your service registry. One of the more popular choices, especially in the JVM-based microservice world, is Eureka (initially developed by Netflix and now part of Spring Cloud). Eureka follows the client-server model, and you usually set up a server (or a cluster of servers for high availability) and use clients to register and locate services.

Açıklaması şöyle

- REST service which registers itself at the registry (Eureka Client) and

- Web application, which is consuming the REST service as a registry-aware client (Spring Cloud Netflix Feign Client).

Maven

Eureka Server tarafında şu satırı dahil ederiz

<dependency>
  <groupId>org.springframework.boot</groupId>
  <artifactId>spring-boot-starter-actuator</artifactId>
</dependency>
<dependency>
  <groupId>org.springframework.cloud</groupId>
  <artifactId>spring-cloud-starter-netflix-eureka-server</artifactId>
</dependency>

Örnek

Şöyle yaparız

@SpringBootApplication
@EnableEurekaServer
public class SuperdevEurekaServerApplication {
  public static void main(String[] args) {
    SpringApplication.run(SuperdevEurekaServerApplication.class, args);
  }
}

application.properties

Ayarlar eureka.client ve eureka.server başlıkları altında belirtilir

1. eureka server Ayarlar

registerWithEureka  Alanı

Eureka Sunucusunun Eurak Server'da listelenmesini isteyip istemediğimizi belirtiriz. 

Örnek 

Eureka Server'a kayıt olmak istemiyorsak şöyle yaparız

eureka.client.registerWithEureka = false
eureka.client.fetchRegistry = false
server.port = 8761

spring.application.name=superdev-eureka-server

Örnek

Şöyle yaparız

spring.application.name=eureka-server
server.port=8761
eureka.client.register-with-eureka=false
eureka.client.fetch-registry=false

2. eureka client Ayarlar

Örnek

Şöyle yaparız

spring.application.name=my-client
eureka.client.service-url.defaultZone=http://localhost:8761/eureka/

Örnek

Şöyle yaparız

server:
  port: 8761 # default port where discovery client is registered
 
eureka:
  client:
    registerWithEureka: false   
    fetchRegistry: false
  server:
    waitTimeInMsWhenSyncEmpty: 0    

fetch-registry Alanı

Örnek 

Şöyle yaparız

server.port=8761

eureka.client.register-with-eureka=false
eureka.client.fetch-registry=false

logging.level.com.netflix.eureka=OFF
logging.level.com.netflix.discovery=OFF

Dashboard

Eureka Server Dashboard'u görmek için şöyle yaparız

http://localhost:8761/

Şeklen şöyle