功能

上报节点的各种信息（依赖、JVM、等等）

pom依赖

eureka的server端，自带健康监控

        <!---  eureka-server 自带健康监控 -->
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-netflix-eureka-server</artifactId>
        </dependency>

        <!--  健康监控   -->
    <!--    <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-actuator</artifactId>
        </dependency>-->

eureka的provider、consumer端，不带健康监控

        <!---  eureka-client   不带 健康监控 -->
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-netflix-eureka-client</artifactId>
        </dependency>

        <!--  健康监控  上报节点信息 -->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-actuator</artifactId>
        </dependency>

访问

• http://localhost:6002/actuator

{
  "_links": {
    "self": {
      "href": "http://localhost:6002/actuator",
      "templated": false
    },
    "health": {
      "href": "http://localhost:6002/actuator/health",
      "templated": false
    },
    "health-path": {
      "href": "http://localhost:6002/actuator/health/{*path}",
      "templated": true
    },
    "info": {
      "href": "http://localhost:6002/actuator/info",
      "templated": false
    }
  }
}

开启更多的actuator功能

management:
  endpoints:
    web:
      exposure:
        include: '*' # 抓取所有信息

  endpoint:
    shutdown:
      enabled: true  #可以远程关闭节点服务（通过actuator，只支持post请求 shutDown方法）

{
  "_links": {
    "self": {
      "href": "http://localhost:6002/actuator",
      "templated": false
    },
    "archaius": {
      "href": "http://localhost:6002/actuator/archaius",
      "templated": false
    },
    "beans": {
      "href": "http://localhost:6002/actuator/beans",
      "templated": false
    },
    "caches-cache": {
      "href": "http://localhost:6002/actuator/caches/{cache}",
      "templated": true
    },
    "caches": {
      "href": "http://localhost:6002/actuator/caches",
      "templated": false
    },
    "health": {
      "href": "http://localhost:6002/actuator/health",
      "templated": false
    },
    "health-path": {
      "href": "http://localhost:6002/actuator/health/{*path}",
      "templated": true
    },
    "info": {
      "href": "http://localhost:6002/actuator/info",
      "templated": false
    },
    "conditions": {
      "href": "http://localhost:6002/actuator/conditions",
      "templated": false
    },
    "shutdown": {
      "href": "http://localhost:6002/actuator/shutdown",
      "templated": false
    },
    "configprops": {
      "href": "http://localhost:6002/actuator/configprops",
      "templated": false
    },
    "env": {
      "href": "http://localhost:6002/actuator/env",
      "templated": false
    },
    "env-toMatch": {
      "href": "http://localhost:6002/actuator/env/{toMatch}",
      "templated": true
    },
    "loggers": {
      "href": "http://localhost:6002/actuator/loggers",
      "templated": false
    },
    "loggers-name": {
      "href": "http://localhost:6002/actuator/loggers/{name}",
      "templated": true
    },
    "heapdump": {
      "href": "http://localhost:6002/actuator/heapdump",
      "templated": false
    },
    "threaddump": {
      "href": "http://localhost:6002/actuator/threaddump",
      "templated": false
    },
    "metrics": {
      "href": "http://localhost:6002/actuator/metrics",
      "templated": false
    },
    "metrics-requiredMetricName": {
      "href": "http://localhost:6002/actuator/metrics/{requiredMetricName}",
      "templated": true
    },
    "scheduledtasks": {
      "href": "http://localhost:6002/actuator/scheduledtasks",
      "templated": false
    },
    "mappings": {
      "href": "http://localhost:6002/actuator/mappings",
      "templated": false
    },
    "refresh": {
      "href": "http://localhost:6002/actuator/refresh",
      "templated": false
    },
    "features": {
      "href": "http://localhost:6002/actuator/features",
      "templated": false
    },
    "service-registry": {
      "href": "http://localhost:6002/actuator/service-registry",
      "templated": false
    }
  }
}

主动关闭服务

http://localhost:6002/actuator/shutdown

备注：不是节点down,而是真正的关闭服务（关闭tomcat），不能远程start

运维可以使用（不能让其他人随便调用，要做权限）

查看节点信息

查看可带参数

http://localhost:6002/actuator/metrics

{
  "names": [
    "jvm.memory.max",
    "jvm.threads.states",
    "jvm.gc.memory.promoted",
    "jvm.memory.used",
    "jvm.gc.max.data.size",
    "jvm.gc.pause",
    "jvm.memory.committed",
    "system.cpu.count",
    "logback.events",
    "jvm.buffer.memory.used",
    "tomcat.sessions.created",
    "jvm.threads.daemon",
    "system.cpu.usage",
    "jvm.gc.memory.allocated",
    "tomcat.sessions.expired",
    "jvm.threads.live",
    "jvm.threads.peak",
    "process.uptime",
    "tomcat.sessions.rejected",
    "process.cpu.usage",
    "jvm.classes.loaded",
    "jvm.classes.unloaded",
    "tomcat.sessions.active.current",
    "tomcat.sessions.alive.max",
    "jvm.gc.live.data.size",
    "jvm.buffer.count",
    "jvm.buffer.total.capacity",
    "tomcat.sessions.active.max",
    "process.start.time"
  ]
}

• 查看jvm信息
  http://localhost:6002/actuator/metrics/jvm.memory.max