轉(zhuǎn)載自
http://blog.csdn.net/forezp/article/details/70037513
上一篇內(nèi)容講述，一個(gè)服務(wù)如何從配置中心讀取文件雨席，配置中心如何從遠(yuǎn)程Git讀取配置文件，當(dāng)服務(wù)很多時(shí)，都需要同時(shí)從配置中心讀取文件的時(shí)候，這時(shí)我們可以考慮將配置中心做成一個(gè)微服務(wù)金顿，并且將其集群化，從而達(dá)到高可用鲤桥，架構(gòu)圖如下：
image.png
一揍拆、準(zhǔn)備工作
繼續(xù)使用上一篇文章的工程，創(chuàng)建一個(gè)eureka-server工程茶凳，用作服務(wù)中心嫂拴。
其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>
<groupId>com.forezp</groupId>
<artifactId>eureka-server</artifactId>
<version>0.0.1-SNAPSHOT</version>
<packaging>jar</packaging>
<name>eureka-server</name>
<description>Demo project for Spring Boot</description>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>1.5.2.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>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-eureka-server</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</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>Dalston.RC1</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>
<snapshots>
<enabled>false</enabled>
</snapshots>
</repository>
</repositories>
</project>
配置文件：
server:
port: 8889
eureka:
instance:
hostname: localhost
client:
registerWithEureka: false
fetchRegistry: false
serviceUrl:
defaultZone: http://${eureka.instance.hostname}:${server.port}/eureka/
入口類：
@EnableEurekaServer
@SpringBootApplication
public class EurekaServerApplication {
public static void main(String[] args) {
SpringApplication.run(EurekaServerApplication.class, args);
}
}
二播揪、改造config-server
在其pom.xml文件下:
<dependencies>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-config-server</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-eureka</artifactId>
</dependency>
</dependencies>
配置文件,將其注冊(cè)問(wèn)服務(wù)：
spring.application.name=config-server
server.port=8888
spring.cloud.config.server.git.uri=https://github.com/forezp/SpringcloudConfig/
spring.cloud.config.server.git.searchPaths=respo
spring.cloud.config.label=master
spring.cloud.config.server.git.username= your username
spring.cloud.config.server.git.password= your password
eureka.client.serviceUrl.defaultZone=http://localhost:8889/eureka/
三、改造config-client
將其注冊(cè)微 eureka服務(wù)筒狠，pom文件配置：
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-config</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-eureka</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
配置文件猪狈，bootstrap.properties
spring.application.name=config-client
spring.cloud.config.label=master
spring.cloud.config.profile=dev
#spring.cloud.config.uri= http://localhost:8888/
eureka.client.serviceUrl.defaultZone=http://localhost:8889/eureka/
spring.cloud.config.discovery.enabled=true
spring.cloud.config.discovery.serviceId=config-server
server.port=8881
- spring.cloud.config.discovery.enabled 是非從配置中心讀取文件
- spring.cloud.config.discovery.serviceId 配置中心的servieId，即服務(wù)名
這時(shí)發(fā)現(xiàn)辩恼，在讀取配置文件不再寫ip地址雇庙，而是服務(wù)名，這時(shí)如果配置服務(wù)部署多份灶伊，通過(guò)負(fù)載均衡状共，從而高可用。
一次啟動(dòng)eureka-servr,config-server,config-client 訪問(wèn)網(wǎng)址：http://localhost:8889/
image.png
訪問(wèn)http://localhost:8881/hi谁帕，瀏覽器顯示：
foo version 3
