Build a micro-service registration center based on Spring Cloud _spring

In a few simple steps, build a micro service registry based on spring cloud, including several features:
-Provide registration center to be registered by service provider
-Service consumer finds the service location in the registry
-High Availability (cluster) configuration

1, the introduction of dependence:
Two dependencies need to be introduced:

	<dependencies>
		<dependency>
			<groupId>org.springframework.cloud</groupId>
			<artifactId>spring-cloud-starter-eureka-server</artifactId>
		</dependency>
	..... </dependencies>

	<dependencyManagement>
		<dependencies>
			<dependency>
				<groupId>org.springframework.cloud</groupId>
				<artifactid>spring-cloud-dependencies</ artifactid>
				<version>Camden.SR2</version>
				<type>pom</type>
				<scope >import</scope>
			</dependency>
		</dependencies>
	</dependencymanagement >

2. Configuration:
In order to configure a highly available registry cluster, 3 registries are configured to spare each other. Assume that the host is:
-192.168.0.9
-192.168.0.10
-192.168.0.18

Port is 58000.

Spring:
  Profiles:
    active:dev
  application:
    name:eureka-service
    
server:
  port:58000
Management:
  port:59000

Eureka:
  client:
    #register-with-eureka:false
    fetch-registry:false
  #instance:
  #  Prefer-ip-address:true
        
---
# development environment Configuration
Spring:
  profiles:dev

---
# Development Service 0 Configuration
Spring:
  profiles:dev0

Eureka:
  instance:
    hostname:192.168.0.9
  Client:
    service-url:
      defaultzone:http://192.168.0.10:58000/eureka/,http://192.168.0.18:58000/eureka/

---
# Development Service 1 Configuration
spring:
  profiles:dev1

Eureka:
  instance:
    hostname:192.168.0.10
  client:
    service-url:
      defaultzone:http://192.168.0.9:58000/eureka/,http://192.168.0.18:58000/ eureka/

---
# Development Service 2 configuration
Spring:
  profiles:dev2

Eureka:
  instance:
    hostname: 192.168.0.18
  Client:
    service-url:
      defaultzone:http://192.168.0.10:58000/eureka/,http:// 192.168.0.9:58000/eureka/

3, Code:
Just one main class is all you need:

@EnableEurekaServer
@SpringBootApplication Public
class Registryapplication {public

	static void main ( String[] args) {
		springapplication.run (registryapplication.class, args);
	}
}

4. Deployment and Inspection results:
Deploy three service centers to three servers, and then open the Administration page:
Http://192.168.0.9:58000/

You can see if the individual standby (replicas) registry is available if it has started normally.