Spring-Boot-Admin(服务监控)

1. 版本说明

   SpringBoot3.0 + SpringBootAdmin3.0.Y-->测试发现监控中心服务端无法监控服务端自身服务，安全配
   置存在类和方法找不到的问题，后来将版本改为SpringBoot2.7 + SpringBootAdmin2.7.Y-->问题解决。

   
2. pom.xml

   
   
   	org.springframework.boot
   	spring-boot-starter-security
   	2.7.6
   
   
   
   	de.codecentric
   	spring-boot-admin-starter-server
   	2.7.7
   
   
   
   	de.codecentric
   	spring-boot-admin-starter-client
   	2.7.7
   
   
   
   	org.projectlombok
   	lombok
   	1.18.24
   	provided
   

3. application.yml

   server:
     port: 8181
     servlet:
       context-path: /admin-server
   spring:
     application:
       name: admin-server
   
   --- # 监控中心服务端配置
   spring:
     security:
       user:
         name: vvvvvv
         password: 123456
     boot:
       admin:
         ui:
           title: MY服务监控中心
         context-path: /kkkkkk
   
   --- # Actuator 监控端点的配置项
   management:
     endpoints:
       web:
         exposure:
           include: '*'
     endpoint:
       health:
         show-details: ALWAYS
       logfile:
         external-file: ./logs/admin-server.log
   
   --- # 监控配置
   spring.boot.admin.client:
     # 增加客户端开关
     enabled: true
     # 设置 Spring Boot Admin Server 地址
     url: http://127.0.0.1:8181/admin-server/kkkkkk
     instance:
       service-url: http://127.0.0.1:8181/admin-server
     username: vvvvvv
     password: 123456
   

4. 补充说明

   1.项目访问地址：http://localhost:8181/admin-server
   server:
     port: 8181
     servlet:
       context-path: /admin-server
   
   2.监控中心该项目的服务名称：admin-server
   spring:
     application:
       name: admin-server
   
   3.监控中心访问地址：http://localhost:8181/admin-server/kkkkkk (用户名:vvvvvv 密码:123456)
   spring:
     security:
       user:
         name: vvvvvv
         password: 123456
     boot:
       admin:
         ui:
           title: MY服务监控中心
         context-path: /kkkkkk
   
   4.将监控中心自身服务添加到监控中心
   --- # Actuator 监控端点的配置项
   management:
     endpoints:
       web:
         exposure:
           include: '*'
     endpoint:
       health:
         show-details: ALWAYS
       logfile:
         external-file: ./logs/admin-server.log
    
   --- # 监控配置
   spring.boot.admin.client:
     # 增加客户端开关
     enabled: true
     # 设置 Spring Boot Admin Server 地址
     url: http://127.0.0.1:8181/admin-server/kkkkkk # 监控中心访问地址
     instance:
       service-url: http://127.0.0.1:8181/admin-server # 项目访问地址
     username: vvvvvv
     password: 123456

5. 监控配置
    

   @Configuration
   @EnableAdminServer
   public class AdminServerConfig {
   
       @Lazy
       @Bean(name = TaskExecutionAutoConfiguration.APPLICATION_TASK_EXECUTOR_BEAN_NAME)
       @ConditionalOnMissingBean(Executor.class)
       public ThreadPoolTaskExecutor applicationTaskExecutor(TaskExecutorBuilder builder) {
           return builder.build();
       }
   
   }

6. 安全配置

   @EnableWebSecurity
   public class SecurityConfig {
   
       private final String adminContextPath;
   
       public SecurityConfig(AdminServerProperties adminServerProperties) {
           this.adminContextPath = adminServerProperties.getContextPath();
       }
   
       @Bean
       public SecurityFilterChain filterChain(HttpSecurity httpSecurity) throws Exception {
           SavedRequestAwareAuthenticationSuccessHandler successHandler = new SavedRequestAwareAuthenticationSuccessHandler();
           successHandler.setTargetUrlParameter("redirectTo");
           successHandler.setDefaultTargetUrl(adminContextPath + "/");
   
           return httpSecurity
                   .headers().frameOptions().disable()
                   .and().authorizeRequests()
                   .antMatchers(adminContextPath + "/assets/**"
                       , adminContextPath + "/login"
                       , "/actuator"
                       , "/actuator/**"
                   ).permitAll()
                   .anyRequest().authenticated()
                   .and()
                   .formLogin().loginPage(adminContextPath + "/login")
                   .successHandler(successHandler).and()
                   .logout().logoutUrl(adminContextPath + "/logout")
                   .and()
                   .httpBasic().and()
                   .csrf()
                   .disable()
                   .build();
       }
   
   }

7. 监控通知

   被监控的服务上线或者下线将触发监控通知，可在此处发邮件或者短信通知相关运维人员。

   @Slf4j
   @Component
   public class CustomNotifier extends AbstractEventNotifier {
   
       protected CustomNotifier(InstanceRepository repository) {
           super(repository);
       }
   
       @Override
       @SuppressWarnings("all")
       protected Mono doNotify(InstanceEvent event, Instance instance) {
           return Mono.fromRunnable(() -> {
               // 实例状态改变事件
               if (event instanceof InstanceStatusChangedEvent) {
                   String registName = instance.getRegistration().getName();
                   String instanceId = event.getInstance().getValue();
                   String status = ((InstanceStatusChangedEvent) event).getStatusInfo().getStatus();
                   log.info("Instance Status Change: [{}],[{}],[{}]", registName, instanceId, status);
               }
   
           });
       }
   
   }

8. 监控中心

   主要的功能点有：显示应用程序的监控状态、应用程序上下线监控、查看 JVM、线程
   信息、可视化的查看日志以及下载日志文件、动态切换日志级别、Http 请求信息跟踪

   
   
   
9. 添加服务

   1.pom.xml
   
   
   	de.codecentric
   	spring-boot-admin-starter-client
   	2.7.7
   
   
   2.application.yml
   server:
     port: 8282
     servlet:
       context-path: /admin-client
   spring:
     application:
       name: admin-client
   
   --- # Actuator 监控端点的配置项
   management:
     endpoints:
       web:
         exposure:
           include: '*'
     endpoint:
       health:
         show-details: ALWAYS
       logfile:
         external-file: ./logs/admin-client.log
   
   --- # 监控配置
   spring.boot.admin.client:
     # 增加客户端开关
     enabled: true
     # 设置 Spring Boot Admin Server 地址
     url: http://127.0.0.1:8181/admin-server/kkkkkk
     instance:
       service-url: http://127.0.0.1:8282/admin-client
       name: client
     username: vvvvvv
     password: 123456

   
   

10. 项目简介

    用于对 Spring Boot 应用的管理和监控。可以用来监控服务是否健康、是否在线、以及一些jvm数据等等。
    
    Spring Boot Admin 分为服务端(spring-boot-admin-server)和客户端(spring-boot-admin-client)，
    服务端和客户端之间采用 http 通讯方式实现数据交互；单体项目中需要整合 spring-boot-admin-client
    才能让应用被监控。
    
    在 SpringCloud 项目中，spring-boot-admin-server 是直接从注册中心抓取应用信息，不需要每个微服
    务应用整合 spring-boot-admin-client 就可以实现应用的管理和监控。