一、Eureka Server HA
在Windows或Linux的hosts文件進行如下修改, 如兩臺電腦, 進行物理IP設置
127.0.0.1 peer1
127.0.0.1 peer2 複製上一章節的 eureka-server工程, 改名爲 eureka-server-ha。
1) 對yml文件進行如下配置:
spring:
application:
name: microservice-eureka-server-ha1
# 指定 profile=peer1
profiles: peer1
server:
port: 8761 # 註冊服務的端口號
eureka:
instance:
hostname: peer1 # 指定當profile=peer1時，主機名
client:
service-url:
defaultZone: http://peer2:8762/eureka/ # 將自己註冊到peer2這個Eureka上面去
---
spring:
application:
name: microservice-eureka-server-ha2
# 指定 profile=peer2
profiles: peer2
server:
port: 8762
eureka:
instance:
hostname: peer1
client:
#register-with-eureka: false #表示是否將自己註冊到Eureka Server中，默認爲true, 由於當前應用就是 Eureka Server， 故而設置爲false
#fetch-registry: false #表示是否從 Eureka Server中獲取註冊信息, 默認爲true, 因爲這是一個單點的 Eureka Server, 不需要同步其它的 Eureka Server 節點的數據， 故而設置爲 false
service-url:
defaultZone: http://peer1:8761/eureka/ # 設置與Eureka Server交互的地址， 查詢服務和註冊服務都需要依賴這個地址. 默認http://localhost:8761/eureka; 多個地址可以使用","分隔
2) pom.xml Maven文件配置
<?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-eureka-server-ha</artifactId>
<version>0.0.1-SNAPSHOT</version>
<packaging>jar</packaging>
<name>eureka-server-ha</name>
<description>Simple for Spring Boot</description>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>1.5.6.RELEASE</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
<java.version>1.8</java.version>
<spring-cloud.version>Dalston.SR3</spring-cloud.version>
</properties>
<dependencies>
<!-- Eureka 服務 -->
<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>${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>
</project>
3） 主程序
package com.itmuch.cloud;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.cloud.netflix.eureka.server.EnableEurekaServer;
@SpringBootApplication
@EnableEurekaServer // 開啓這是一個 Eureka Server 程序
public class EurekaServerApplication {
public static void main(String[] args) {
SpringApplication.run(EurekaServerApplication.class, args);
}
}
4） Maven 打包
mvn clean package 5） 在DOS中運行
java -jar springcloud-eureka-ha-0.0.1-SNAPSHOT.jar --spring.profiles.active=peer1
java -jar springcloud-eureka-ha-0.0.1-SNAPSHOT.jar --spring.profiles.active=peer2 二、Eureka Client 的YML文件defaultZone指向配置
只要配置 defaultZone 的指向
server:
port: 8081
session:
timeout: 30
tomcat:
max-threads: 0
uri-encoding: UTF-8
spring:
application:
#表示註冊到Eureka上的應用名稱
name: cloud-service
datasource:
url: jdbc:mysql://localhost:3306/boot
username: root
password: xshdb
driver-class-name: com.mysql.jdbc.Driver
jpa:
# Specify the DBMS
database: MYSQL
# Show or not log for each sql query
show-sql: true
# Hibernate dll auto (create, create-drop, update)
hibernate:
ddl-auto: update
eureka:
client:
service-url:
#將服務註冊到集羣上
defaultZone: http://peer1:8761/eureka/,http://peer2:8762/eureka/
instance:
prefer-ip-address: true # 表示將自己的IP註冊到Eureka Serverk, 如果不配置該屬性或將它改爲false，則表示註冊微服務所在操作系統的hostname到Eureka Server
