多Eureka Server实战

梦里梦外; 2021-07-24 20:19 245阅读 0赞

**一 Config-server**

1 F:\\springcloud\\spring-cloud-code\\ch3-1\\ch3-1-config-server\\src\\main\\resources\\bootstrap.yml

spring:
      application:
        name: config-server
      profiles:
        active: native
    server:
      port: 8888

2 F:\\springcloud\\spring-cloud-code\\ch3-1\\ch3-1-config-server\\src\\main\\resources\\config\\eureka-server-peer1.yml

server:
      port: 8761
    
    
    spring:
      application:
        name: eureka-server
    eureka:
      instance:
        hostname: localhost
        preferIpAddress: true
      client:
        registerWithEureka: true
        fetchRegistry: true
        serviceUrl:
    #      defaultZone: http://localhost:8761/eureka/ # one eureka server
    #      defaultZone: http://localhost:8762/eureka/ # two eureka server
          defaultZone: http://localhost:8762/eureka/,http://localhost:8763/eureka/ # three eureka server
      server:
          waitTimeInMsWhenSyncEmpty: 0
          enableSelfPreservation: false

3 F:\\springcloud\\spring-cloud-code\\ch3-1\\ch3-1-config-server\\src\\main\\resources\\config\\eureka-server-peer2.yml

server:
      port: 8762
    
    
    eureka:
      instance:
        hostname: localhost
        preferIpAddress: true
      client:
        registerWithEureka: true
        fetchRegistry: true
        serviceUrl:
    #      defaultZone: http://localhost:8761/eureka/ # two eureka server
          defaultZone: http://localhost:8761/eureka/,http://localhost:8763/eureka/ # three eureka server
      server:
          waitTimeInMsWhenSyncEmpty: 0
          enableSelfPreservation: false

4 F:\\springcloud\\spring-cloud-code\\ch3-1\\ch3-1-config-server\\src\\main\\resources\\config\\eureka-server-peer3.yml

server:
      port: 8763
    
    
    eureka:
      instance:
        hostname: localhost
        preferIpAddress: true
      client:
        registerWithEureka: true
        fetchRegistry: true
        serviceUrl:
          defaultZone: http://localhost:8761/eureka/,http://localhost:8762/eureka/ # three eureka server
      server:
          waitTimeInMsWhenSyncEmpty: 0
          enableSelfPreservation: false

**二 Eureka Server**

1 F:\\springcloud\\spring-cloud-code\\ch3-1\\ch3-1-eureka-server\\src\\main\\resources\\bootstrap.yml

spring:
      application:
        name: eureka-server
      cloud:
        config:
          uri: http://localhost:8888
    management:
      endpoints:
        web:
          exposure:
            include: '*'

2 F:\\springcloud\\spring-cloud-code\\ch3-1\\ch3-1-eureka-server\\src\\main\\resources\\application.yml

eureka:
      server:
        peer-eureka-nodes-update-interval-ms: 10000 #默认是10分钟即600000，这里为了验证改为10秒

**三 Eureka Client**

1 F:\\springcloud\\spring-cloud-code\\ch3-1\\ch3-1-eureka-client\\src\\main\\resources\\bootstrap.yml

spring:
      application:
        name: eureka-client
      cloud:
        config:
          uri: http://localhost:8888
    management:
      endpoints:
        web:
          exposure:
            include: '*'

2 F:\\springcloud\\spring-cloud-code\\ch3-1\\ch3-1-eureka-client\\src\\main\\resources\\application.yml

eureka:
      client:
        eureka-service-url-poll-interval-seconds: 10 #默认为300秒，这里为了验证改为10秒

3 控制器

package cn.springcloud.book.controller;
    
    
    import org.springframework.beans.factory.annotation.Autowired;
    import org.springframework.cloud.netflix.eureka.EurekaClientConfigBean;
    import org.springframework.web.bind.annotation.GetMapping;
    import org.springframework.web.bind.annotation.RequestMapping;
    import org.springframework.web.bind.annotation.RestController;
    
    
    /**
    * Created by caibosi on 2018-06-20.
    */
    @RestController
    @RequestMapping("/query")
    public class QueryController {
    
    
        @Autowired
        EurekaClientConfigBean eurekaClientConfigBean;
    
    
        @GetMapping("/eureka-server")
        public Object getEurekaServerUrl(){
            return eurekaClientConfigBean.getServiceUrl();
        }
    }

**四 组网**

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2NoZW5ncWl1bWluZw_size_16_color_FFFFFF_t_70][]

**五 启动**

1 启动Server-config

2 启动3个Eureka Server，启动命令如下

mvn spring-boot:run -Dspring.profiles.active=peer1
    mvn spring-boot:run -Dspring.profiles.active=peer2
    mvn spring-boot:run -Dspring.profiles.active=peer3

3 启动Eureka Server

**六 测试**

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2NoZW5ncWl1bWluZw_size_16_color_FFFFFF_t_70 1][]

[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2NoZW5ncWl1bWluZw_size_16_color_FFFFFF_t_70]: /images/20210724/60117edf85e14ad79823d168d67a5623.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2NoZW5ncWl1bWluZw_size_16_color_FFFFFF_t_70 1]: /images/20210724/a2c238337e764bf3b8fdb595760e769c.png