Springboot学习笔记之应用监控actuator

前言

官方文档：https://docs.spring.io/spring-boot/docs/2.2.0.BUILD-SNAPSHOT/reference/html/production-ready-features.html#production-ready

Actuator监控管理

pom 依赖

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

端点介绍

/actuator 所有 Endpoint 的列表

访问 http://IP:PORT/actuator/** 即可查询下面端点

ID	Description	Enabled by default
auditevents	Exposes audit events information for the current application.	Yes
beans	Displays a complete list of all the Spring beans in your application.	Yes
caches	Exposes available caches.	Yes
conditions	Shows the conditions that were evaluated on configuration and auto-configuration classes and the reasons why they did or did not match.	Yes
configprops	Displays a collated list of all @ConfigurationProperties.	Yes
env	Exposes properties from Spring’s ConfigurableEnvironment.	Yes
flyway	Shows any Flyway database migrations that have been applied.	Yes
health	Shows application health information.	Yes
httptrace	Displays HTTP trace information (by default, the last 100 HTTP request-response exchanges).	Yes
info	Displays arbitrary application info.	Yes
integrationgraph	Shows the Spring Integration graph.	Yes
loggers	Shows and modifies the configuration of loggers in the application.	Yes
liquibase	Shows any Liquibase database migrations that have been applied.	Yes
metrics	Shows ‘metrics’ information for the current application.	Yes
mappings	Displays a collated list of all @RequestMapping paths.	Yes
scheduledtasks	Displays the scheduled tasks in your application.	Yes
sessions	Allows retrieval and deletion of user sessions from a Spring Session-backed session store. Not available when using Spring Session’s support for reactive web applications.	Yes
shutdown	Lets the application be gracefully shutdown.	No
threaddump	Performs a thread dump.	Yes

shutdown 端点默认关闭可以通过下面设置开启

management:
  endpoint:
    shutdown:
      # 开启端点关闭
      enabled: true

shutdown 端口只支持 post 请求

定制端点

定制端点路径

management:
  endpoints:
    web:
      base-path: /myEndpoints

访问 shutdown 端点：http://localhost:8001/myEndpoints/shutdown

定制端口

management:
  server:
    port: 8008

访问 shutdown 端点：http://localhost:8008/actuator/shutdown

关闭部分端点

management:
  endpoints:
    web:
      exposure:
        # 暴露所有监控端点
        include: "*"
        # 关闭配置的端点
        exclude: info, health

开启部分端点

# 监控端点默认关闭，只需要在 include 配置即可
management:
  endpoints:
    web:
      exposure:
        # 暴露以下监控端点
        include: health，info

Jconsole 监控管理

在控制台中调用java内置的 jconsole 来实现 JMX 监控

打开 jconsole 页面，选择本地进程或者远程进程都可