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Spring Boot admin 2.0 详解

日期:2019-05-20点击:365

一、什么是Spring Boot Admin ?

Spring Boot Admin是一个开源社区项目,用于管理和监控SpringBoot应用程序。 应用程序作为Spring Boot Admin Client向为Spring Boot Admin Server注册(通过HTTP)或使用SpringCloud注册中心(例如Eureka,Consul)发现。 UI是的Vue.js应用程序,展示Spring Boot Admin Client的Actuator端点上的一些监控。服务端采用Spring WebFlux + Netty的方式。Spring Boot Admin为注册的应用程序提供以下功能:

  • 显示健康状况
  • 显示详细信息,例如

    • JVM和内存指标
    • micrometer.io指标
    • 数据源指标
    • 缓存指标
  • 显示构建信息编号
  • 关注并下载日志文件
  • 查看jvm system-和environment-properties
  • 查看Spring Boot配置属性
  • 支持Spring Cloud的postable / env-和/ refresh-endpoint
  • 轻松的日志级管理
  • 与JMX-beans交互
  • 查看线程转储
  • 查看http-traces
  • 查看auditevents
  • 查看http-endpoints
  • 查看计划任务
  • 查看和删除活动会话(使用spring-session)
  • 查看Flyway / Liquibase数据库迁移
  • 下载heapdump
  • 状态变更通知(通过电子邮件,Slack,Hipchat,......)
  • 状态更改的事件日志(非持久性)

二、入门

1. 创建 Spring Boot Admin 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 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>2.1.0.RELEASE</version> <relativePath/> <!-- lookup parent from repository --> </parent> <groupId>com.gf</groupId> <artifactId>admin-server</artifactId> <version>0.0.1-SNAPSHOT</version> <name>admin-server</name> <description>Demo project for Spring Boot</description> <properties> <java.version>1.8</java.version> <spring-boot-admin.version>2.1.0</spring-boot-admin.version> </properties> <dependencies> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-web</artifactId> </dependency> <dependency> <groupId>de.codecentric</groupId> <artifactId>spring-boot-admin-starter-server</artifactId> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-test</artifactId> <scope>test</scope> </dependency> </dependencies> <dependencyManagement> <dependencies> <dependency> <groupId>de.codecentric</groupId> <artifactId>spring-boot-admin-dependencies</artifactId> <version>${spring-boot-admin.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>

application.yml

spring: application: name: admin-server server: port: 8769

启动类 AdminServerApplication

启动类加上@EnableAdminServer注解,开启AdminServer的功能:

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

2. 创建 Spring Boot Admin 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 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>2.1.0.RELEASE</version> <relativePath/> <!-- lookup parent from repository --> </parent> <groupId>com.gf</groupId> <artifactId>admin-client</artifactId> <version>0.0.1-SNAPSHOT</version> <name>admin-client</name> <description>Demo project for Spring Boot</description> <properties> <java.version>1.8</java.version> <spring-boot-admin.version>2.1.0</spring-boot-admin.version> </properties> <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> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-test</artifactId> <scope>test</scope> </dependency> </dependencies> <dependencyManagement> <dependencies> <dependency> <groupId>de.codecentric</groupId> <artifactId>spring-boot-admin-dependencies</artifactId> <version>${spring-boot-admin.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> 

application.yml

  • spring.boot.admin.client.url:要注册的Spring Boot Admin Server的URL。
  • management.endpoints.web.exposure.include:与Spring Boot 2一样,默认情况下,大多数actuator的端口都不会通过http公开,* 代表公开所有这些端点。对于生产环境,应该仔细选择要公开的端点。
spring: application: name: admin-client boot: admin: client: url: http://localhost:8769 server: port: 8768 management: endpoints: web: exposure: include: '*' endpoint: health: show-details: ALWAYS

启动类 AdminClientApplication

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

启动两个工程,在浏览器上输入localhost:8769 ,浏览器显示的界面如下:

查看wallboard:

点击wallboard,可以查看admin-client具体的信息,比如内存状态信息:

查看spring bean的情况:

查看应用程序运行状况,信息和详细:

还有很多监控信息,多点一点就知道。

三、集成 Eureka

1. 创建 sc-eureka-server

这是一个 eureka-server 注册中心。

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 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>2.1.0.RELEASE</version> <relativePath/> <!-- lookup parent from repository --> </parent> <groupId>com.gf</groupId> <artifactId>sc-admin-server</artifactId> <version>0.0.1-SNAPSHOT</version> <name>sc-admin-server</name> <description>Demo project for Spring Boot</description> <properties> <java.version>1.8</java.version> <spring-boot-admin.version>2.1.0</spring-boot-admin.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>de.codecentric</groupId> <artifactId>spring-boot-admin-starter-server</artifactId> <version>2.1.0</version> </dependency> <dependency> <groupId>org.springframework.cloud</groupId> <artifactId>spring-cloud-starter-netflix-eureka-client</artifactId> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-test</artifactId> <scope>test</scope> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-security</artifactId> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-mail</artifactId> </dependency> <dependency> <groupId>org.jolokia</groupId> <artifactId>jolokia-core</artifactId> </dependency> </dependencies> <dependencyManagement> <dependencies> <dependency> <groupId>org.springframework.cloud</groupId> <artifactId>spring-cloud-dependencies</artifactId> <version>${spring-cloud.version}</version> <type>pom</type> <scope>import</scope> </dependency> <dependency> <groupId>de.codecentric</groupId> <artifactId>spring-boot-admin-dependencies</artifactId> <version>${spring-boot-admin.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> 

application.yml

spring: application: name: sc-eureka-server server: port: 8761 eureka: client: service-url: defaultZone: http://localhost:8761/eureka register-with-eureka: false fetch-registry: false management: endpoints: web: exposure: include: "*" endpoint: health: show-details: ALWAYS

启动类 ScEurekaServerApplication

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

2. 创建 sc-admin-server

这是一个 Spring Boot Admin Server端。

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 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>2.1.0.RELEASE</version> <relativePath/> <!-- lookup parent from repository --> </parent> <groupId>com.gf</groupId> <artifactId>sc-admin-server</artifactId> <version>0.0.1-SNAPSHOT</version> <name>sc-admin-server</name> <description>Demo project for Spring Boot</description> <properties> <java.version>1.8</java.version> <spring-boot-admin.version>2.1.0</spring-boot-admin.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>de.codecentric</groupId> <artifactId>spring-boot-admin-starter-server</artifactId> <version>2.1.0</version> </dependency> <dependency> <groupId>org.springframework.cloud</groupId> <artifactId>spring-cloud-starter-netflix-eureka-client</artifactId> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-test</artifactId> <scope>test</scope> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-security</artifactId> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-mail</artifactId> </dependency> <dependency> <groupId>org.jolokia</groupId> <artifactId>jolokia-core</artifactId> </dependency> </dependencies> <dependencyManagement> <dependencies> <dependency> <groupId>org.springframework.cloud</groupId> <artifactId>spring-cloud-dependencies</artifactId> <version>${spring-cloud.version}</version> <type>pom</type> <scope>import</scope> </dependency> <dependency> <groupId>de.codecentric</groupId> <artifactId>spring-boot-admin-dependencies</artifactId> <version>${spring-boot-admin.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> 

application.yml

spring: application: name: admin-server server: port: 8769 eureka: client: registryFetchIntervalSeconds: 5 service-url: defaultZone: ${EUREKA_SERVICE_URL:http://localhost:8761}/eureka/ instance: leaseRenewalIntervalInSeconds: 10 health-check-url-path: /actuator/health management: endpoints: web: exposure: include: "*" endpoint: health: show-details: ALWAYS

启动类 ScAdminServerApplication

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

3. 创建 sc-admin-client

这是一个 Spring Boot Admin client 端。

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 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>2.1.0.RELEASE</version> <relativePath/> <!-- lookup parent from repository --> </parent> <groupId>com.gf</groupId> <artifactId>sc-admin-client</artifactId> <version>0.0.1-SNAPSHOT</version> <name>sc-admin-client</name> <description>Demo project for Spring Boot</description> <properties> <java.version>1.8</java.version> <spring-boot-admin.version>2.1.0</spring-boot-admin.version> <spring-cloud.version>Finchley.SR2</spring-cloud.version> </properties> <dependencies> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-actuator</artifactId> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-web</artifactId> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-webflux</artifactId> </dependency> <dependency> <groupId>de.codecentric</groupId> <artifactId>spring-boot-admin-starter-client</artifactId> </dependency> <dependency> <groupId>org.springframework.cloud</groupId> <artifactId>spring-cloud-starter-netflix-eureka-client</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>${spring-cloud.version}</version> <type>pom</type> <scope>import</scope> </dependency> <dependency> <groupId>de.codecentric</groupId> <artifactId>spring-boot-admin-dependencies</artifactId> <version>${spring-boot-admin.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> 

application.yml

spring: application: name: sc-admin-client eureka: instance: leaseRenewalIntervalInSeconds: 10 health-check-url-path: /actuator/health client: registryFetchIntervalSeconds: 5 service-url: defaultZone: ${EUREKA_SERVICE_URL:http://localhost:8761}/eureka/ management: endpoints: web: exposure: include: "*" endpoint: health: show-details: ALWAYS server: port: 8762

启动类 ScAdminClientApplication

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

启动三个工程,访问localhost:8769,出现如下界面:

admin 会自己拉取 Eureka 上注册的 app 信息,主动去注册。这也是唯一区别之前入门中手动注册的地方,就是 client 端不需要 admin-client 的依赖,也不需要配置 admin 地址了,一切全部由 admin-server 自己实现。这样的设计对环境变化很友好,不用改了admin-server后去改所有app 的配置了。

四、集成 Spring Security

Web应用程序中的身份验证和授权有多种方法,因此Spring Boot Admin不提供默认方法。默认情况下,spring-boot-admin-server-ui提供登录页面和注销按钮。我们结合 Spring Security 实现需要用户名和密码登录的安全认证。

sc-admin-server工程的pom文件需要增加以下的依赖:

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

在 sc-admin-server工的配置文件 application.yml 中配置 spring security 的用户名和密码,这时需要在服务注册时带上 metadata-map 的信息,如下:

spring: security: user: name: "admin" password: "admin" eureka: instance: metadata-map: user.name: ${spring.security.user.name} user.password: ${spring.security.user.password}

@EnableWebSecurity注解以及WebSecurityConfigurerAdapter一起配合提供基于web的security。继承了WebSecurityConfigurerAdapter之后,再加上几行代码,我们就能实现要求用户在进入应用的任何URL之前都进行验证的功能,写一个配置类SecuritySecureConfig继承WebSecurityConfigurerAdapter,配置如下:

@Configuration public class SecuritySecureConfig extends WebSecurityConfigurerAdapter { private final String adminContextPath; public SecuritySecureConfig(AdminServerProperties adminServerProperties) { this.adminContextPath = adminServerProperties.getContextPath(); } @Override protected void configure(HttpSecurity http) throws Exception { // @formatter:off SavedRequestAwareAuthenticationSuccessHandler successHandler = new SavedRequestAwareAuthenticationSuccessHandler(); successHandler.setTargetUrlParameter("redirectTo"); successHandler.setDefaultTargetUrl(adminContextPath + "/"); http.authorizeRequests() //授予对所有静态资产和登录页面的公共访问权限。 .antMatchers(adminContextPath + "/assets/**").permitAll() .antMatchers(adminContextPath + "/login").permitAll() //必须对每个其他请求进行身份验证 .anyRequest().authenticated() .and() //配置登录和注销 .formLogin().loginPage(adminContextPath + "/login").successHandler(successHandler).and() .logout().logoutUrl(adminContextPath + "/logout").and() //启用HTTP-Basic支持。这是Spring Boot Admin Client注册所必需的 .httpBasic().and(); // @formatter:on } }

重新访问 http://localhost:8769/ 会出现登录界面,密码是 配置文件中配置好的,账号 admin 密码 admin,界面如下:

五、通知

1. 邮件通知

在 Spring Boot Admin 中 当注册的应用程序状态更改为DOWN、UNKNOWN、OFFLINE 都可以指定触发通知,下面讲解配置邮件通知。

在sc-admin-server工程pom文件,加上mail的依赖,如下:

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

在配置文件application.yml文件中,配置收发邮件的配置:

spring: mail: host: smtp.163.com username: xxxx@163.com password: xxxx properties: mail: smtp: auth: true starttls: enable: true required: true boot: admin: notify: mail: from: xxxx@163.com to: xxxx@qq.com

配置后,重启sc-admin-server工程,之后若出现注册的客户端的状态从 UP 变为 OFFLINE 或其他状态,服务端就会自动将电子邮件发送到上面配置的收件地址。

注意 : 配置了邮件通知后,会出现 反复通知 service offline / up。这个问题的原因在于 查询应用程序的状态和信息超时,下面给出两种解决方案:

#方法一:增加超时时间(单位:ms) spring.boot.admin.monitor.read-timeout=20000 #方法二:关闭闭未使用或不重要的检查点 management.health.db.enabled=false management.health.mail.enabled=false management.health.redis.enabled=false management.health.mongo.enabled=false

2. 自定义通知

可以通过添加实现Notifier接口的Spring Beans来添加您自己的通知程序,最好通过扩展 AbstractEventNotifier或AbstractStatusChangeNotifier。在sc-admin-server工程中编写一个自定义的通知器:

@Component public class CustomNotifier extends AbstractStatusChangeNotifier { private static final Logger LOGGER = LoggerFactory.getLogger( LoggingNotifier.class); public CustomNotifier(InstanceRepository repository) { super(repository); } @Override protected Mono<Void> doNotify(InstanceEvent event, Instance instance) { return Mono.fromRunnable(() -> { if (event instanceof InstanceStatusChangedEvent) { LOGGER.info("Instance {} ({}) is {}", instance.getRegistration().getName(), event.getInstance(), ((InstanceStatusChangedEvent) event).getStatusInfo().getStatus()); String status = ((InstanceStatusChangedEvent) event).getStatusInfo().getStatus(); switch (status) { // 健康检查没通过 case "DOWN": System.out.println("发送 健康检查没通过 的通知!"); break; // 服务离线 case "OFFLINE": System.out.println("发送 服务离线 的通知!"); break; //服务上线 case "UP": System.out.println("发送 服务上线 的通知!"); break; // 服务未知异常 case "UNKNOWN": System.out.println("发送 服务未知异常 的通知!"); break; default: break; } } else { LOGGER.info("Instance {} ({}) {}", instance.getRegistration().getName(), event.getInstance(), event.getType()); } }); } }

源码

https://github.com/gf-huanchupk/SpringBootLearning/tree/master/springboot-admin

原文链接:https://yq.aliyun.com/articles/703120
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