springboot2.x系列十四（分布式微服务监控中心SpringBootAdmin）

前面我们讲了actuator，但是Spring Boot Actuator只是提供了一个个的接口，需要我们自行集成到监控程序中。Admin-UI基于actuator实现，能够返回界面展示监控信息

SpringBootAdmin用来管理和监控SpringBoot应用程序，它利用spring-boot-starter-actuator提供的功能，将各个微服务的状态整合到一起，并提供良好的界面查看支持，并且能够动态的修改实例日志级别。SpringBootAdmin分为server端和client端，server端可查看各个微服务的状态，client端将微服务注册到server端。github源码地址：https://github.com/codecentric/spring-boot-admin

Admin-UI-Server

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 https://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>

    <groupId>com.example</groupId>
    <artifactId>admin-ui-server</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <name>admin-ui-server</name>
    <description>Demo project for Spring Boot</description>

    <properties>
        <java.version>1.8</java.version>
    </properties>

    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.2.1.RELEASE</version>
    </parent>
    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
            <exclusions>
                <exclusion>
                    <groupId>org.springframework.boot</groupId>
                    <artifactId>spring-boot-starter-tomcat</artifactId>
                </exclusion>
            </exclusions>
        </dependency>
        <dependency>
            <groupId>de.codecentric</groupId>
            <artifactId>spring-boot-admin-server</artifactId>
            <version>2.2.1</version>
        </dependency>
        <dependency>
            <groupId>de.codecentric</groupId>
            <artifactId>spring-boot-admin-server-ui</artifactId>
            <version>2.2.1</version>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-security</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-jetty</artifactId>
        </dependency>
    </dependencies>



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

</project>

application.properties

server.port=8081
spring.application.name=admin-server

#监控中心账号密码
spring.security.user.name=admin
spring.security.user.password=admin

配置security验证

package com.example.adminuiserver;

import org.springframework.context.annotation.Configuration;
import org.springframework.security.config.annotation.web.builders.HttpSecurity;
import org.springframework.security.config.annotation.web.configuration.WebSecurityConfigurerAdapter;
import org.springframework.security.web.csrf.CookieCsrfTokenRepository;

import de.codecentric.boot.admin.server.config.AdminServerProperties;




@Configuration
public class SecuritySecureConfig extends WebSecurityConfigurerAdapter {

    private final String contextPath;

    public SecuritySecureConfig(AdminServerProperties adminServerProperties) {
        this.contextPath = adminServerProperties.getContextPath();
    }

    @Override
    protected void configure(HttpSecurity http) throws Exception {
        // 跨域设置，SpringBootAdmin客户端通过instances注册，见InstancesController
        http.csrf().csrfTokenRepository(CookieCsrfTokenRepository.withHttpOnlyFalse())
                .ignoringAntMatchers(contextPath + "/instances");

        http.authorizeRequests().antMatchers(contextPath + "/assets/**").permitAll(); // 静态资源
        http.authorizeRequests().anyRequest().authenticated(); // 所有请求必须通过认证

        // 整合spring-boot-admin-server-ui
        http.formLogin().loginPage("/login").permitAll();
        http.logout().logoutUrl("/logout").logoutSuccessUrl("/login");

        // 启用basic认证，SpringBootAdmin客户端使用的是basic认证
        http.httpBasic();
    }
}

启动类 

package com.example.adminuiserver;

import de.codecentric.boot.admin.server.config.EnableAdminServer;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.EnableAutoConfiguration;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.context.annotation.Configuration;

@EnableAdminServer
@SpringBootApplication
public class AdminUiServerApplication {

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

Admin-UI-Client

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 https://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>

    <groupId>com.example</groupId>
    <artifactId>admin-ui-client</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <name>admin-ui-client</name>
    <description>Demo project for Spring Boot</description>

    <properties>
        <java.version>1.8</java.version>
    </properties>
    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.0.0.RELEASE</version>
    </parent>
    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
        <dependency>
            <groupId>de.codecentric</groupId>
            <artifactId>spring-boot-admin-starter-client</artifactId>
            <version>2.0.0</version>
        </dependency>

    </dependencies>


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

</project>

 application.properties

server.port=8080
spring.application.name=admin-client


management.endpoints.web.exposure.include=*
management.endpoint.health.show-details=always
spring.boot.admin.client.url=http://127.0.0.1:8081
#spring.boot.admin.client.instance.metadata.user.name=admin
#spring.boot.admin.client.instance.metadata.user.password=admin

spring.boot.admin.client.username=admin
spring.boot.admin.client.password=admin

启动类

package com.example.adminuiclient;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;

@SpringBootApplication
public class AdminUiClientApplication {

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

}

运行

两个项目都进行启动后  

访问server服务 http://localhost:8081/login进行登录

上面我们配置的账号和密码都是 admin

登录后 

 展示了服务的运行信息

点击应用墙进去后 可以看到各类运行参数信息

通知提醒

SpringBootAdmin提供了多种通知功能，也可以自定义通知提醒。这里我们验证一下邮件通知功能

  1）服务端poxm.xml增加配置

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

  2）增加配置

spring.mail.host=smtp.qq.com
[email protected]
spring.mail.password=xxxx

[email protected]
[email protected]

  3）效果

当客户端实例停掉后，我们会收到邮件提醒。