目标：
搭建高可用eureka注册中心，服务端注册server服务,对于客户端调用，本章不讨论，下一章会讨论
eureka简介
Eureka是Spring Cloud Netflix微服务套件中的一部分，可以与Springboot构建的微服务很容易的整合起来。
Eureka包含了服务器端和客户端组件。服务器端，也被称作是服务注册中心，用于提供服务的注册与发现。Eureka支持高可用的配置，当集群中有分片出现故障时，Eureka就会转入自动保护模式，它允许分片故障期间继续提供服务的发现和注册，当故障分片恢复正常时，集群中其他分片会把他们的状态再次同步回来。
eureka架构图
操作
- 新建eureka-server服务
新建eureka-server moudle
- 添加eureka依赖
<?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>1.5.9.RELEASE</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<groupId>open.template.work</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>Edgware.SR2</spring-cloud.version>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter</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-server</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-security</artifactId>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
<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>
</project>
- 添加application.yml
spring:
application:
name: temmplate-eureka-server
#开启安全机制，需要账号密码访问
security:
basic:
enabled: true
user:
name: root
password: 123
#---做为连接符，分开不同配置
---
spring:
profiles: peer1
server:
port: 8761
eureka:
instance:
hostname: peer1
#eureka服务彼此注册，添加账号密码模式
client:
service-url:
defaultZone: http://root:123@peer2:8762/eureka/,http://root:123@peer3:8763/eureka/
---
spring:
profiles: peer2
server:
port: 8762
eureka:
instance:
hostname: peer2
client:
service-url:
defaultZone: http://root:123@peer1:8761/eureka/,http://root:123@peer3:8763/eureka/
---
spring:
profiles: peer3
server:
port: 8763
eureka:
instance:
hostname: peer3
client:
service-url:
defaultZone: http://root:123@peer1:8761/eureka/,http://root:123@peer2:8762/eureka/
- 应用入口添加Eureka注解
@SpringBootApplication
@EnableEurekaServer
public class EurekaServerApplication {
public static void main(String[] args) {
SpringApplication.run(EurekaServerApplication.class, args);
}
}
- 修改hosts，配置三个域名测试
127.0.0.1 peer1
127.0.0.1 peer2
127.0.0.1 peer3
- idea配置多个run
配置多个run
这样配置三个run客户端，通过profiles参数区分配置，分别启动三个项目，可以看到三个服务运行状态
eureka
- 在udm-server上配置eureka客户端，注册服务
@SpringBootApplication
@Configuration
@EnableEurekaClient
public class UdmServerApplication {
public static void main(String[] args) {
SpringApplication.run(UdmServerApplication.class, args);
}
@Bean
public static Endpoint<Map<String, Object>> servertime() {
return new MyEndPoint();
}
}
application.yml添加注册信息
server:
port: 8000
info:
app:
name: @project.artifactId@
#management:
# security:
# enabled: true
endpoints:
shutdown:
enabled: true
id: shut
beans:
enabled: false
security:
basic:
enabled: true
user:
name: root
password: 12
spring:
Jackson:
serialization:
indent-output: true
application:
name: udm-server
cloud:
inetutils:
#多网卡匹配模式，单网卡可不用
preferred-networks:
- 192.168
eureka:
client:
service-url:
defaultZone: http://root:123@peer1:8761/eureka/,http://root:123@peer2:8762/eureka/,http://root:123@peer3:8763/eureka/
instance:
prefer-ip-address: true
pom添加Eureka依赖，然后重启udm-server服务，再看eureka服务
udm-server服务
以上就是通过Eureka客户端直接注册服务，对于一些非java端web应用，基于微服务的宗旨一样支持，可以通过xml配置方式完成需求，具体这里没有讨论，可以参考https://blog.csdn.net/wo18237095579/article/details/83271829
参考资料：https://blog.csdn.net/jek123456/article/details/74171055/
完工！
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