SpringBoot1.x Actuator监控端点使用

SpringBoot自带监控功能Actuator，可以帮助实现对程序内部运行情况监控，比如监控状况、Bean加载情况、环境变量、日志信息、线程信息等。

1、Maven导包

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

2、关闭授权

很多端点的访问需要授权才允许访问，可以在配置中关闭授权。

management:
  security.enabled: false # 部分端点访问需要授权，关闭授权

3、端点介绍

• /health

{
    "status": "UP",
    "diskSpace": {
        "status": "UP",
        "total": 250685575168,
        "free": 155073470464,
        "threshold": 10485760
    }
}

• /env

{
    "profiles": [],
    "server.ports": {
        "local.server.port": 10500
    },
    "servletContextInitParams": {},
    "systemProperties": {
        "java.vendor": "Oracle Corporation",
        "jboss.modules.system.pkgs": "com.intellij.rt",
        "sun.java.launcher": "SUN_STANDARD",
        "sun.nio.ch.bugLevel": "",
        "sun.management.compiler": "HotSpot 64-Bit Tiered Compilers",
        "spring.output.ansi.enabled": "always",
        "os.name": "Mac OS X",
        ......
    }
}

• /mappings

{
    "{[/health || /health.json],methods=[GET],produces=[application/vnd.spring-boot.actuator.v1+json || application/json]}": {
        "bean": "endpointHandlerMapping",
        "method": "public java.lang.Object org.springframework.boot.actuate.endpoint.mvc.HealthMvcEndpoint.invoke(javax.servlet.http.HttpServletRequest,java.security.Principal)"
    },
    "{[/metrics || /metrics.json],methods=[GET],produces=[application/vnd.spring-boot.actuator.v1+json || application/json]}": {
        "bean": "endpointHandlerMapping",
        "method": "public java.lang.Object org.springframework.boot.actuate.endpoint.mvc.EndpointMvcAdapter.invoke()"
    },
    "{[/env || /env.json],methods=[GET],produces=[application/vnd.spring-boot.actuator.v1+json || application/json]}": {
        "bean": "endpointHandlerMapping",
        "method": "public java.lang.Object org.springframework.boot.actuate.endpoint.mvc.EndpointMvcAdapter.invoke()"
    },
    "{[/trace || /trace.json],methods=[GET],produces=[application/vnd.spring-boot.actuator.v1+json || application/json]}": {
        "bean": "endpointHandlerMapping",
        "method": "public java.lang.Object org.springframework.boot.actuate.endpoint.mvc.EndpointMvcAdapter.invoke()"
    },
    "{[/dump || /dump.json],methods=[GET],produces=[application/vnd.spring-boot.actuator.v1+json || application/json]}": {
        "bean": "endpointHandlerMapping",
        "method": "public java.lang.Object org.springframework.boot.actuate.endpoint.mvc.EndpointMvcAdapter.invoke()"
    },
    "{[/shutdown || /shutdown.json],methods=[POST],produces=[application/vnd.spring-boot.actuator.v1+json || application/json]}": {
        "bean": "endpointHandlerMapping",
        "method": "public java.lang.Object org.springframework.boot.actuate.endpoint.mvc.ShutdownMvcEndpoint.invoke()"
    },
    "{[/mappings || /mappings.json],methods=[GET],produces=[application/vnd.spring-boot.actuator.v1+json || application/json]}": {
        "bean": "endpointHandlerMapping",
        "method": "public java.lang.Object org.springframework.boot.actuate.endpoint.mvc.EndpointMvcAdapter.invoke()"
    }
}

• /shutdown

关停服务，需要在配置中放开此端点，并且需要POST请求方式

endpoints:
  shutdown.enabled: true # 开启远程关闭服务

2019-11-13 23:48:07,929 [INFO] [Thread-16] [org.springframework.boot.context.embedded.AnnotationConfigEmbeddedWebApplicationContext:984] [] Closing org.springframework.boot[email protected]517566b: startup date [Wed Nov 13 23:44:15 CST 2019]; root of context hierarchy
2019-11-13 23:48:07,931 [INFO] [Thread-16] [org.springframework.context.support.DefaultLifecycleProcessor:358] [] Stopping beans in phase 0
2019-11-13 23:48:07,933 [INFO] [Thread-16] [org.springframework.boot.actuate.endpoint.jmx.EndpointMBeanExporter:449] [] Unregistering JMX-exposed beans on shutdown
2019-11-13 23:48:07,933 [INFO] [Thread-16] [org.springframework.boot.actuate.endpoint.jmx.EndpointMBeanExporter:241] [] Unregistering JMX-exposed beans
2019-11-13 23:48:07,934 [INFO] [Thread-16] [org.springframework.jmx.export.annotation.AnnotationMBeanExporter:449] [] Unregistering JMX-exposed beans on shutdown
2019-11-13 23:48:07,935 [INFO] [Thread-16] [io.undertow.servlet:360] [] Destroying Spring FrameworkServlet 'dispatcherServlet'

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