Eureka Server集羣搭建並發現服務

原創

尤尤尤奴斯

2019-02-03 17:45

最近在學習微服務,自己也實踐了一下Eureka服務端集羣搭建方法,其中也踩了很多的坑,記錄下來.才發現學習過程中以爲很簡單的問題在實踐的時候遇到了很多的問題,在一步步解決的過程中也學到了很多.

我以搭建三個server集羣爲例,一步步來實現一下,

1.pom.xml

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>
    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.1.2.RELEASE</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>
    <groupId>com.example</groupId>
    <artifactId>server01</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <name>server01</name>
    <description>Demo project for Spring Boot</description>

    <properties>
        <java.version>1.8</java.version>
        <spring-cloud.version>Greenwich.RELEASE</spring-cloud.version>
    </properties>

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

        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>
    </dependencies>

    <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>

    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
            </plugin>
        </plugins>
    </build>

    <repositories>
        <repository>
            <id>spring-milestones</id>
            <name>Spring Milestones</name>
            <url>https://repo.spring.io/milestone</url>
        </repository>
    </repositories>

</project>

2.配置文件:

服務端1: 10001端口,將其註冊到10002,10003端口的eureka下

server:
  port: 10001

spring:
  application:
    name: eureka-server

eureka:
  instance:
    hostname: eureka01
    instance-id: eureka-server-01
#    prefer-ip-address: true
  client:
    service-url:
      defaultZone: http://eureka02:10002/eureka/,http://eureka03:10003/eureka/

服務端2:10002端口,註冊到10001和10003端口的eureka下

spring:
  application:
    name: eureka-server

server:
  port: 10002

eureka:
  instance:
    hostname: eureka02
    instance-id: eureka-server-02
#    prefer-ip-address: true
  client:
    service-url:
      defaultZone: http://eureka03:10003/eureka/,http://eureka01:10001/eureka/

服務端3:10003端口, 註冊到10001及10002下

spring:
  application:
    name: eureka-server

server:
  port: 10003

eureka:
  instance:
#    prefer-ip-address: true
    instance-id: eureka-server-03
    hostname: eureka03
  client:
    service-url:
      defaultZone: http://eureka01:10001/eureka/,http://eureka02:10002/eureka/