springboot-admin的使用

矫情吗；* 2022-04-15 03:22 212阅读 0赞

## 什么是psringboot Admin ##

Spring Boot Admin 是一个管理和监控Spring Boot 应用程序的开源软件。每个应用都认为是一个客户端，通过HTTP或者使用 Eureka注册到admin server中进行展示，Spring Boot Admin UI部分使用AngularJs将数据展示在前端。

Spring Boot Admin 是一个针对spring-boot的actuator接口进行UI美化封装的监控工具。他可以：在列表中浏览所有被监控spring-boot项目的基本信息，详细的Health信息、内存信息、JVM信息、垃圾回收信息、各种配置信息（比如数据源、缓存列表和命中率）等…

这篇文章给大家介绍如何使用Spring Boot Admin对Spring Boot应用进行监控。

# 先启动一个服务注册中心 #

### admin的server端 ###

项目pom文件：

<?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>
    
        <groupId>com.fu</groupId>
        <artifactId>admintest</artifactId>
        <version>0.0.1-SNAPSHOT</version>
        <packaging>jar</packaging>
    
        <name>admintest</name>
        <description>Demo project for Spring Boot</description>
    
        <parent>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-parent</artifactId>
            <version>1.5.9.RELEASE</version>
            <relativePath/> 
        </parent>
    
        <properties>
            <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
            <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
            <java.version>1.8</java.version>
        </properties>
    
        <dependencies>
            <dependency>
                <groupId>org.springframework.cloud</groupId>
                <artifactId>spring-cloud-starter-eureka</artifactId>
                <version>1.4.2.RELEASE</version>
            </dependency>
            <dependency>
                <groupId>de.codecentric</groupId>
                <artifactId>spring-boot-admin-server</artifactId>
                <version>1.5.6</version>
            </dependency>
            <dependency>
                <groupId>de.codecentric</groupId>
                <artifactId>spring-boot-admin-server-ui</artifactId>
                <version>1.5.6</version>
            </dependency>
    
            <dependency>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-starter-test</artifactId>
            </dependency>
        </dependencies>
    
        <build>
            <plugins>
                <plugin>
                    <groupId>org.springframework.boot</groupId>
                    <artifactId>spring-boot-maven-plugin</artifactId>
                </plugin>
            </plugins>
        </build>
    
    
    </project>

配置文件 ：

server:
      port: 8006
    spring:
      application:
        name: admin-test
    eureka:
      instance:
        leaseRenewalIntervalInSeconds: 10
      client:
        registryFetchIntervalSeconds: 5
        serviceUrl:
          defaultZone: ${EUREKA_SERVICE_URL:http://localhost:8761}/eureka/
    
    management:
      security:
        enabled: false

启动类：

package com.fu.admintest;
    
    
    import de.codecentric.boot.admin.config.EnableAdminServer;
    import org.springframework.boot.SpringApplication;
    import org.springframework.boot.autoconfigure.EnableAutoConfiguration;
    import org.springframework.cloud.client.discovery.EnableDiscoveryClient;
    import org.springframework.context.annotation.Configuration;
    
    @Configuration
    @EnableAutoConfiguration
    @EnableDiscoveryClient
    @EnableAdminServer
    public class AdminTestApplication { 
    
        public static void main(String[] args) { 
            SpringApplication.run(AdminTestApplication.class, args);
            System.out.println("启动成功");
    
        }
    }
    
    }

完成上面三步之后，启动服务端，浏览器访问http://localhost:8000即可登录到springboot admin的首页

## admin client 端 ##

项目pom文件：

<?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>
    
        <groupId>com.kye</groupId>
        <artifactId>admin-client-demo</artifactId>
        <version>0.0.1-SNAPSHOT</version>
        <packaging>jar</packaging>
    
        <name>admin-client-demo</name>
        <description>Demo project for Spring Boot</description>
    
        <parent>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-parent</artifactId>
            <version>1.5.9.RELEASE</version>
            <relativePath/> 
        </parent>
    
        <properties>
            <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
            <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
            <java.version>1.8</java.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</artifactId>
                <version>1.4.2.RELEASE</version>
            </dependency>
            <dependency>
                <groupId>de.codecentric</groupId>
                <artifactId>spring-boot-admin-starter-client</artifactId>
                <version>1.5.6</version>
            </dependency>
        </dependencies>
    
        <build>
            <plugins>
                <plugin>
                    <groupId>org.springframework.boot</groupId>
                    <artifactId>spring-boot-maven-plugin</artifactId>
                </plugin>
            </plugins>
        </build>
    
    
    </project>

配置文件：

server:
      port: 9006
    spring:
      application:
        name: producer-3
    eureka:
      client:
        serviceUrl:
          defaultZone: http://localhost:8761/eureka/
    management:
      security:
        enabled: false

启动类：

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

完成上面的配置之后：启动客户端：浏览器访问 [http://localhost:8000][http_localhost_8000] 即可以看出Admin Server监控了三个实例，包括Server自己，注册中心、一个client。说明Admin Server自动从服务中心抓取了所有的实例信息并进行了监控。点击Detail可以具体查看某一个示例的监控信息。

### 服务端邮件告警 ###

Spring Boot Admin将微服务中所有应用信息在后台进行了展示，非常方便我们对微服务整体的监控和治理。如果服务有异常的时候，Spring Boot Admin 能给出邮件报警。  
我们对上面的示例项目spring-boot-admin的服务端进行改造。  
添加发送邮件的依赖：

<dependency>
      <groupId>org.springframework.boot</groupId>
      <artifactId>spring-boot-starter-mail</artifactId>
    </dependency>

配置文件:

spring:
      mail:
        host: smtp.qq.com
    #开通pop3/smtp的邮箱以及密码  
        username: xxxxx@qq.com
        password: xxxx
        properties:
          mail:
            smtp:
              auth: true
              starttls:
                enable: true
                required: true
      boot:
        admin:
          notify:
            mail:
            #邮件发送者
              from: xxxx@qq.com
              #邮件接收者
              to: xxxx@qq.com

置完成后，重新启动项目spring-boot-admin-server，这样Admin Server就具备了邮件告警的功能，默认情况下Admin Server对Eureka中的服务上下线都进行了监控，当服务上下线的时候我们就会收到邮件。

[http_localhost_8000]: http://localhost:8000