SpringBoot微服务注册分布式Consul的详细过程

#启动第1个Server节点，集群要求要有3个Server，将容器8500端口映射到主机8900端口，同时开启管理界面 
Docker run -d --name=consul1 -p 8900:8500 -e CONSUL_BIND_INTERFACE=eth0 consul agent --server=true --bootstrap-expect=3 --client=0.0.0.0 -ui 
 
#启动第2个Server节点，并加入集群 
docker run -d --name=consul2 -e CONSUL_BIND_INTERFACE=eth0 consul agent --server=true --client=0.0.0.0 --join 172.17.0.2 
 
#启动第3个Server节点，并加入集群 
docker run -d --name=consul3 -e CONSUL_BIND_INTERFACE=eth0 consul agent --server=true --client=0.0.0.0 --join 172.17.0.2 
 
#启动第4个Client节点，并加入集群 
docker run -d --name=consul4 -e CONSUL_BIND_INTERFACE=eth0 consul agent --server=false --client=0.0.0.0 --join 172.17.0.2 

                            +---------------------+
                             | Consul Server       |
                             | (集群外的Consul服务器) |
                             +---------------------+
                                        |
                                        | HTTP/DNS API
                                        |
                             +---------------------+
                             | Consul Client       |
                             | (Pod中的容器)       |
                             +---------------------+
                                      /  \
                                     /    \
                                    /      \
                       HTTP/DNS API       |       HTTP API
                         +-------+       |       +--------+
                         | Java  |       |       | File-  |
                         | App   |<------+------>| beat   |
                         |       |               |        |
                         +-------+               +--------+

<?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 https://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>2.5.4</version>
        <relativePath/>
    </parent>
 
    <groupId>com.springboot.demo</groupId>
    <artifactId>WEB-demo</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <name>web-demo</name>
    <description>web-demo</description>
    <properties>
        <java.version>1.8</java.version>
        <spring-cloud.version>Finchley.RELEASE</spring-cloud.version>
    </properties>
    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
 
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-consul-discovery</artifactId>
        </dependency>
 
 
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-actuator</artifactId>
        </dependency>
 
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </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>2020.0.3</version>
                <type>pom</type>
                <scope>import</scope>
            </dependency>
        </dependencies>
    </dependencyManagement>
</project>

server:
  port: 1000
spring:
  application:
    name: heian
  cloud:
    consul:
      enabled: true
      host: 192.168.102.20  # 注册中心地址
      port: 8500  # 注册中心地址的端口
      discovery:
        hostname: 192.168.96.19 # 本地ip
        instance-id: ${spring.application.name}:${spring.cloud.consul.discovery.hostname}:${server.port}
        #health-check-path: ${server.servlet.context-path}/actuator/health # 如果配置了context-path就配置，没有就不配
        health-check-interval: 15s # 每隔15s做一次健康检查
        reGISter: true
        register-health-check: true
        service-name: ${spring.application.name}
 
# 放开端口
management:
  endpoints:
    web:
      exposure:
        include: "*"
  endpoint:
    health:
      show-details: always

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

package com.springboot.demo.webdemo.controller;
 
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
 
import java.util.HashMap;
 
@RestController
@RequestMapping("/employee")
public class EmployeeController {
 
    @GetMapping
    public HashMap<String, String> index(){
        HashMap<String, String> hashmap = new HashMap<String, String>();
        hashmap.put("姓名", "王二");
        hashmap.put("年龄", "27");
        hashmap.put("工龄", "6");
 
        return hashmap;
    }
}