Eureka 快速搭建集群高可用
1、eclipse构建一个spring-boot项目,并引入spring-cloud-starter-eureka-server模块
这是我的pom.xml 文件:
<?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>
<groupId>com.itmuch.cloud</groupId>
<artifactId>microservice-discovery-eureka-ha</artifactId>
<version>0.0.1-SNAPSHOT</version>
<packaging>jar</packaging>
<name>microservice-discovery-eureka-ha</name>
<description>Demo project for Spring Boot</description>
<!-- 引入spring boot的依赖 -->
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>1.4.3.RELEASE</version>
</parent>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
<java.version>1.8</java.version>
</properties>
<dependencies>
<!-- eureka server端 -->
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-eureka-server</artifactId>
</dependency>
</dependencies>
<!-- 引入spring cloud 依赖 -->
<dependencyManagement>
<dependencies>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-dependencies</artifactId>
<version>Camden.SR4</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>
</project>
2、本机windows模拟eureka集群,在hosts中配置两个hostname
127.0.0.1 peer1
127.0.0.1 peer2
3、这里用一个eureka项目模拟集群,所以需要两个application.properties文件,即application-peer1.properties和application-peer2.properties,下面是我的项目整体结构
4、配置集群
application-peer1.properties的配置如下:
spring.application.name=microservice-discovery-eureka-ha
spring.profiles=peer1
server.port=8761
eureka.instance.hostname=peer1
eureka.client.serviceUrl.defaultZone=http://peer1:8762/eureka/
application-peer2.properties的配置如下:
spring.application.name=microservice-discovery-eureka-ha
spring.profiles=peer2
server.port=8762
eureka.instance.hostname=peer2
eureka.client.serviceUrl.defaultZone=http://peer1:8761/eureka/
其中microservice-discovery-eureka-ha是我的artifactId
在项目启动类上加上@EnableEurekaServer 注解,标记该服务是eureka server。
5、maven 构建该项目,clean install
6、在target下面能看到生成的jar 包
6、使用如下两条命令先后启动eureka两个节点
java -jar microservice-discovery-eureka-ha-0.0.1-SNAPSHOT.jar --spring.profiles.active=peer1
java -jar microservice-discovery-eureka-ha-0.0.1-SNAPSHOT.jar --spring.profiles.active=peer2
7、启动peer1时,会报replicator 有问题,等到peer2启动后就会replicator 成功
8、分别访问peer1 、peer2节点,查看注册中心的集群情况:
http://peer1:8761/
这样简单的eureka集群搭建完成。