通过http://localhost:8100/health 访问监控信息发现只有有限的信息，如下：

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{
  "description": "Spring Cloud Eureka Discovery Client",
  "status": "UP"
}

只展示了注册中心Eureka的信息。

经过阅读文档发现，新版本当中，actuator增加了安全机制，需要在配置文件中添加参数：

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management:
  security:
    enabled: false

默认为true，需要校验权限才能访问/env、/mappings、 /beans，这里关闭后重新启动就可以看到很多health 的信息了。更多配置需要参考：https://docs.spring.io/spring-boot/docs/1.5.7.RELEASE/reference/htmlsingle/#production-ready

访问http://localhost:8100/health 获得如下数据：

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{
    "description": "Spring Cloud Eureka Discovery Client",
    "status": "UP",
    "discoveryComposite": {
        "description": "Spring Cloud Eureka Discovery Client",
        "status": "UP",
        "discoveryClient": {
            "description": "Spring Cloud Eureka Discovery Client",
            "status": "UP",
            "services": [
                "itmuch-customer-movie",
                "itmuch-provider-user"
            ]
        },
        "eureka": {
            "description": "Remote status from Eureka server",
            "status": "UP",
            "applications": {
                "ITMUCH-CUSTOMER-MOVIE": 1,
                "ITMUCH-PROVIDER-USER": 1
            }
        }
    },
    "diskSpace": {
        "status": "UP",
        "total": 164282499072,
        "free": 151694168064,
        "threshold": 10485760
    },
    "refreshScope": {
        "status": "UP"
    },
    "hystrix": {
        "status": "UP"
    }
}

更多参数设置参考：https://segmentfault.com/a/1190000004318360?_ea=568366

简单记录，有待深入挖坑！欢迎留言交流！