springcloud实现高可用注册中心

Bertha 。 2022-02-04 03:55 278阅读 0赞

第一步简单看一下就行，主要是第二步

**1：首先需要配置一个注册中心**

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>1.5.20.RELEASE</version>
            <relativePath/> 
        </parent>
        <groupId>com.sinosoft</groupId>
        <artifactId>eureka-server</artifactId>
        <version>0.0.1-SNAPSHOT</version>
        <name>eureka-server</name>
        <description>Demo project for Spring Boot</description>
    
        <properties>
            <java.version>1.8</java.version>
            <spring-cloud.version>Greenwich.SR1</spring-cloud.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-test</artifactId>
                <scope>test</scope>
            </dependency>
        </dependencies>
    
        <dependencyManagement>
            <dependencies>
                <dependency>
                    <groupId>org.springframework.cloud</groupId>
                    <artifactId>spring-cloud-dependencies</artifactId>
                    <version>Dalston.SR1</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>

在application.properties配置

server.port=1111
    spring.application.name=eureka-server
    eureka.instance.hostname=localhost
    eureka.client.fetch-registry=false
    eureka.client.register-with-eureka=false
    eureka.client.service-url.defaultZone=http://${eureka.instance.hostname}:${server.port}/eureka/

server.prot是端口号

spring.application.name定义名称

eureka.instance.hostname主机名

eureka.client.register-with-eureka注册中心是否注册自己，因为本身为注册中心，所以不注册设为false

eureka.client.fetch-registry注册中心是维护服务实例，不需要检索服务，所以设为false

在Action里面需要配置的是

两个注解不能少

@EnableEurekaServer  
@SpringBootApplication

@EnableEurekaServer
    @SpringBootApplication
    public class EurekaServerApplication {
    
        public static void main(String[] args) {
            
            SpringApplication.run(EurekaServerApplication.class, args);
        }
    
    }

启动之后访问  [http://localhost:1111][http_localhost_1111]

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3lhbmdndWFuZ25pdWJp_size_16_color_FFFFFF_t_70][]

以上这些在网上有许多，我只是简单阐述下，具体的可以自行查找，现在主要说的是高可用注册中心

**2：配置高可用配置中心**

①在resources下新建两个配置文件application-server1.properties，application-server2.properties

②需要新加两个配置文件application-server1.properties，application-server2.properties

application-peer1.properties配置

spring.application.name=eureka-server
    server.port=1111
    eureka.instance.hostname=serve1
    eureka.client.service-url.defaultZone=http://serve2:1112/eureka/

application-peer2.properties配置

spring.application.name=eureka-server
    server.port=1112
    eureka.instance.hostname=serve2
    eureka.client.service-url.defaultZone=http://serve1:1111/eureka/

注意的是端口号不同

eureka.instance.hostname和eureka.client.service-url.defaultZone的区别

③在/etc/hosts文件配置peer1和peer2的转换，路径是C:\\Windows\\System32\\drivers\\etc

127.0.0.1       serve1  
127.0.0.1       serve2

④把项目打成jar包形式

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3lhbmdndWFuZ25pdWJp_size_16_color_FFFFFF_t_70 1][]

⑤在cmd中启动项目，需要切换到jar包路径 两个cmd运行启动命令

java  -jar eureka-server-0.0.1-SNAPSHOT.jar --spring.profiles.active=serve1

java  -jar eureka-server-0.0.1-SNAPSHOT.jar --spring.profiles.active=serve2

⑥在IDEA中启动

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3lhbmdndWFuZ25pdWJp_size_16_color_FFFFFF_t_70 2][]

点击+号启动第二个

访问[http://localhost:1111/][http_localhost_1111]和[http://localhost:111][http_localhost_1111]2/可以看到DS Replicas下面的serve1和serve2

[http_localhost_1111]: http://localhost:1111/
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