【consul】使用学习

【consul】使用学习

转载：https://www.cnblogs.com/yangchongxing/p/10653791.html 

1、下载 consul

https://www.consul.io

2、Window系统使用

开发模式启动，启动后以前配置会丢失

consul agent -dev

导出配置

consul kv export > kv.json

导入配置

consul kv import @kv.json

 3、将 Spring Boot 为服务注册到服务代理

bootstrap.yml 文件

server:
  port: 0
spring:
  application:
    name: consul-client
  cloud:
    consul:
      host: dev.consul.ycx
      port: 8500
      config:
        format: yaml
      discovery:
        prefer-ip-address: true
        health-check-interval: 3s
        health-check-path: /actuator/health
        instance-id: ${spring.application.name}:${vcap.application.instance_id:${spring.application.instance_id:${random.value}}}

consul Key / Value < config < application

 如果在 config 目录下有应用名目录 consul-client 也就是 spring.application.name=consul-client 指定的目录下data中有相同的配置，就会覆盖 application 下的配置

pom 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>2.1.4.RELEASE</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>
    <groupId>com.example</groupId>
    <artifactId>consulclient</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <name>consulclient</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.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-consul-config</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>

    <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>

    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
            </plugin>
        </plugins>
    </build>

</project>

@EnableDiscoveryClient 在Edgware版本是可选的。

package com.example.consulclient;

import org.springframework.beans.factory.annotation.Value;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

@SpringBootApplication
@RestController
// @EnableDiscoveryClient  在Edgware版本是可选的
public class ConsulclientApplication {

    public static void main(String[] args) {
        SpringApplication.run(ConsulclientApplication.class, args);
    }

    @Value("${ycx.info}")
    private String info;

    @RequestMapping("/consul")
    public Object index() {
        return info;
    }
}

bootstrap.yml  参考配置

spring:
  application:
    name: ${project.name}
  profiles:
    active: dev
  cloud:
    consul:
      host: dev.consul.ycx
      port: 8500
      config:
        # enabled为true表示启用配置管理功能
        enabled: true
        # watch选项为配置监视功能，主要监视配置的改变
        watch:
          enabled: true
          delay: 10000
          wait-time: 30
        # 表示如果没有发现配置，是否抛出异常，true为是，false为否，当为false时，consul会打印warn级别的日志信息
        fail-fast: false
        # 表示使用的配置格式
        format: yaml
      # 服务发现配置
      discovery:
        # 启用服务发现
        enabled: true
        # 启用服务注册
        register: true
        # 服务停止时取消注册
        deregister: true
        # 表示注册时使用IP而不是hostname
        prefer-ip-address: true
        # 执行监控检查的频率
        health-check-interval: 15s
        # 设置健康检查失败多长时间后，取消注册
        health-check-critical-timeout: 15s
        # 健康检查的路径
        health-check-path: /actuator/health
        # 服务注册标识，格式为：应用名称+服务器IP+端口
        instance-id: ${spring.application.name}:${vcap.application.instance_id:${spring.application.instance_id:${random.value}}}

Key / Values < config < application 参考配置

server:
  port: 0
logging:
  level:
    root: INFO
spring:
  jackson:
    date-format: yyyy-MM-dd HH:mm:ss
    time-zone: GMT+8
    default-property-inclusion: non_null
mybatis-plus:
  mapper-locations: classpath*:mapper/*.xml
  configuration:
    auto-mapping-behavior: partial
    auto-mapping-unknown-column-behavior: warning
  global-config:
    db-config:
      logic-delete-value: -1 # 逻辑已删除值(默认为 1)
      logic-not-delete-value: 1 # 逻辑未删除值(默认为 0)
feign:
  client:
    config:
      default:
        connect-timeout: 20000
        read-timeout: 20000