Springcloud Learning-Highly Available Distributed Configuration Center (Spring Cloud Config)

1. Introduction

　　The highly available distributed configuration Center, which is a microservices-ready configuration Center, is clustered to achieve high availability. Config-server and Config-client register with Eureka-server and Config-server multi-instance clustering deployment

2. Retrofit Config-server

1, we use the previously created Eureka-server project as a registry, port 8761

2, we will Config-server project, as Eureka-client, need to introduce spring-cloud-starter-netflix-eureka-client dependency in Pom.xml, the code is as follows

<?XML version= "1.0" encoding= "UTF-8"?><Projectxmlns= "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.lishun</groupId>    <Artifactid>Config-server</Artifactid>    <version>0.0.1-snapshot</version>    <Packaging>Jar</Packaging>    <name>Config-server</name>    <Description>Demo Project for Spring Boot</Description>    <Parent>        <groupId>Com.lishun</groupId>        <Artifactid>Cloud</Artifactid>        <version>1.0-snapshot</version>        <RelativePath/> <!--Lookup parent from repository -    </Parent>    <Dependencies>        <Dependency>            <groupId>Org.springframework.cloud</groupId>            <Artifactid>Spring-cloud-starter-netflix-eureka-client</Artifactid>        </Dependency>         <Dependency>        <groupId>Org.springframework.boot</groupId>        <Artifactid>Spring-boot-starter-web</Artifactid>    </Dependency>        <Dependency>            <groupId>Org.springframework.cloud</groupId>            <Artifactid>Spring-cloud-config-server</Artifactid>        </Dependency>    </Dependencies></Project>

3, in the project start class Configserverapplication annotated @enableeurekaclient, open eurekaclient function, the code is as follows

@EnableEurekaClient @enableconfigserver@springbootapplication  Public class configserverapplication {    publicstaticvoid  main (string[] args) {        Springapplication.run (configserverapplication. class , args);}    }

4, in the Application.properties configuration file, specify the service registration address, the code is as follows

spring.application.name=config-serverserver.port=8889#spring.cloud.config.server.native.search-locations= classpath:/shared#spring.profiles.active=nativespring.cloud.config.server.git.uri=https://github.com/lis-ylfy/ Config-test/spring.cloud.config.server.git.searchpaths=lisspring.cloud.config.label= masterspring.cloud.config.server.git.username=spring.cloud.config.server.git.password= eureka.client.serviceurl.defaultzone=http://localhost:8761/eureka/

3. Retrofit Config-client

　　1, the config-client also as a eureka-client, in the Pom.xml file to add spring-cloud-starter-netflix-eureka-client dependency, in the project start class add annotations @ Enableeurekaclient, turn on the Eurekaclient function

2, in the project configuration file bootstrap.properties Specify the registered address of the service is Http://localhost:8761/eureka, specify to Serviceid to Config-server Configuration service read the configuration file, The code is as follows

Spring.application.name=config-clientspring.cloud.config.uri= http://localhost:8888/ spring.cloud.config.fail-fast=truespring.profiles.active=devserver.port= 8881eureka.client.serviceurl.defaultzone=http://localhost:8761/eureka/spring.cloud.config.discovery.enabled= Truespring.cloud.config.discovery.serviceid=config-server

3. Start the Eureka-server, Config-server and config-client projects in turn, note that it is necessary to config-server start the successful well and register with the Eureka-server to start the process. Config-client, otherwise config-client can't find Config-server.

4, visit Http://localhost:8881/hi, browser display:

Config-test

5. Achieve high availability of config-server

Using idea to open multiple config-server instances, ports 8888 and 8889, and then open multiple config-client instances, from the control can see it in turn from 8888 and 88,892 Config-server read the configuration file, And the load balance is realized.

Springcloud Learning-Highly Available Distributed Configuration Center (Spring Cloud Config)