SpringBoot之actuator

在springBoot中集成actuator可以很方便的管理和监控应用的状态。

暴露的Restful接口有：

HTTP方法	路径	描述	鉴权
GET	/autoconfig	查看自动配置的使用情况	true
GET	/configprops	查看配置属性，包括默认配置	true
GET	/beans	查看bean及其关系列表	true
GET	/dump	打印线程栈	true
GET	/env	查看所有环境变量	true
GET	/env/{name}	查看具体变量值	true
GET	/health	查看应用健康指标	false
GET	/info	查看应用信息	false
GET	/mappings	查看所有url映射	true
GET	/metrics	查看应用基本指标	true
GET	/metrics/{name}	查看具体指标	true
POST	/shutdown	关闭应用	true
GET	/trace	查看基本追踪信息	true

其中有不少请求需要鉴权才能访问，由于我们的应用基本都是在通过Nginx暴露给外网的，我们可以在配置文件禁用鉴权拦截。

# 禁用actuator管理端鉴权
management.security.enabled=false
# 启用shutdown   host:port/shutdown
endpoints.shutdown.enabled=true
# 禁用密码验证
endpoints.shutdown.sensitive=false

通过访问http://IP:port/metrics可以得到类似如下信息：

 {
     "mem": 372386,
     "mem.free": 129077,
     "processors": 4,
     "instance.uptime": 12149,
     "uptime": 20629,
     "systemload.average": -1.0,
     "heap.committed": 302080,
     "heap.init": 129024,
     "heap.used": 173002,
     "heap": 1807872,
     "nonheap.committed": 72448,
     "nonheap.init": 2496,
     "nonheap.used": 70307,
     "nonheap": 0,
     "threads.peak": 57,
     "threads.daemon": 53,
     "threads.totalStarted": 64,
     "threads": 55,
     "classes": 9724,
     "classes.loaded": 9724,
     "classes.unloaded": 0,
     "gc.ps_scavenge.count": 11,
     "gc.ps_scavenge.time": 151,
     "gc.ps_marksweep.count": 2,
     "gc.ps_marksweep.time": 242,
     "counter.servo.eurekaserver.replication.batchsize.count": 0,
     "counter.servo.eurekaserver.replication.batchsize.totaltime": 0,
     "gauge.servo.eurekaserver.replication.batchsize.stddev": 0.0,
     "gauge.servo.eurekaserver.replication.batchsize.percentile_50": 0.0,
     "gauge.servo.eurekaserver.replication.batchsize.percentile_95": 0.0,
     "gauge.servo.eurekaserver.replication.batchsize.percentile_99": 0.0,
     "gauge.servo.eurekaserver.replication.batchsize.percentile_99_50": 0.0,
     "counter.servo.eurekaserver.replication.acceptedtasks": 0,
     "counter.servo.eurekaserver.replication.replayedtasks": 0,
     "counter.servo.eurekaserver.replication.expiredtasks": 0,
     "counter.servo.eurekaserver.replication.overriddentasks": 0,
     "counter.servo.eurekaserver.replication.queueoverflows": 0,
     "gauge.servo.eurekaserver.replication.acceptorqueuesize": 0,
     "gauge.servo.eurekaserver.replication.pendingjobrequests": 1,
     "gauge.servo.eurekaserver.replication.availablejobs": 0,
     "gauge.servo.eurekaserver.replication.reprocessqueuesize": 0,
     "gauge.servo.eurekaserver.replication.queuesize": 0,
     "counter.servo.count": 0,
     "counter.servo.count-minus-replication": 0,
     "counter.servo.eurekaserver.replication.executiontime.count": 0,
     "counter.servo.eurekaserver.replication.executiontime.totaltime": 0,
     "gauge.servo.eurekaserver.replication.executiontime.stddev": 0.0,
     "gauge.servo.eurekaserver.replication.executiontime.percentile_50": 0.0,
     "gauge.servo.eurekaserver.replication.executiontime.percentile_95": 0.0,
     "gauge.servo.eurekaserver.replication.executiontime.percentile_99": 0.0,
     "gauge.servo.eurekaserver.replication.executiontime.percentile_99_50": 0.0,
     "counter.servo.eurekaserver.replication.numberofsuccessfulexecutions": 0,
     "counter.servo.eurekaserver.replication.numberoftransienterrors": 0,
     "counter.servo.eurekaserver.replication.numberofpermanenterrors": 0,
     "normalized.servo.serialize-all.totaltime": 0.0,
     "normalized.servo.serialize-all.count": 0.0,
     "gauge.servo.serialize-all.min": 0.0,
     "gauge.servo.serialize-all.max": 0.0,
     "normalized.servo.serialize-all-delta.totaltime": 0.0,
     "normalized.servo.serialize-all-delta.count": 0.0,
     "gauge.servo.serialize-all-delta.min": 0.0,
     "gauge.servo.serialize-all-delta.max": 0.0,
     "normalized.servo.serialize-all_remote_region.totaltime": 0.0,
     "normalized.servo.serialize-all_remote_region.count": 0.0,
     "gauge.servo.serialize-all_remote_region.min": 0.0,
     "gauge.servo.serialize-all_remote_region.max": 0.0,
     "normalized.servo.serialize-all-delta_remote_region.totaltime": 0.0,
     "normalized.servo.serialize-all-delta_remote_region.count": 0.0,
     "gauge.servo.serialize-all-delta_remote_region.min": 0.0,
     "gauge.servo.serialize-all-delta_remote_region.max": 0.0,
     "normalized.servo.serialize-one.totaltime": 0.0,
     "normalized.servo.serialize-one.count": 0.0,
     "gauge.servo.serialize-one.min": 0.0,
     "gauge.servo.serialize-one.max": 0.0,
     "normalized.servo.serialize-one-vip.totaltime": 0.0,
     "normalized.servo.serialize-one-vip.count": 0.0,
     "gauge.servo.serialize-one-vip.min": 0.0,
     "gauge.servo.serialize-one-vip.max": 0.0,
     "normalized.servo.compress-payload.totaltime": 0.0,
     "normalized.servo.compress-payload.count": 0.0,
     "gauge.servo.compress-payload.min": 0.0,
     "gauge.servo.compress-payload.max": 0.0,
     "gauge.servo.responsecachesize": 0,
     "counter.servo.discovery-peernodeclient-localhost_reuse": 0,
     "counter.servo.discovery-peernodeclient-localhost_createnew": 0,
     "counter.servo.discovery-peernodeclient-localhost_request": 0,
     "counter.servo.discovery-peernodeclient-localhost_release": 0,
     "counter.servo.discovery-peernodeclient-localhost_delete": 0,
     "normalized.servo.discovery-peernodeclient-localhost_requestconnectiontimer.totaltime": 0.0,
     "normalized.servo.discovery-peernodeclient-localhost_requestconnectiontimer.count": 0.0,
     "gauge.servo.discovery-peernodeclient-localhost_requestconnectiontimer.min": 0.0,
     "gauge.servo.discovery-peernodeclient-localhost_requestconnectiontimer.max": 0.0,
     "normalized.servo.discovery-peernodeclient-localhost_createconnectiontimer.totaltime": 0.0,
     "normalized.servo.discovery-peernodeclient-localhost_createconnectiontimer.count": 0.0,
     "gauge.servo.discovery-peernodeclient-localhost_createconnectiontimer.min": 0.0,
     "gauge.servo.discovery-peernodeclient-localhost_createconnectiontimer.max": 0.0,
     "gauge.servo.connectioncount": 0,
     "gauge.servo.localregistrysize": 0,
     "gauge.servo.numofreplicationsinlastmin": 0,
     "gauge.servo.isbelowrenewthreshold": 0,
     "gauge.servo.numofrenewsinlastmin": 0,
     "gauge.servo.numofrenewsperminthreshold": 1,
     "gauge.servo.numofelementsininstancecache": 0,
     "normalized.servo.eureka-connection-cleaner-time.totaltime": 0.0,
     "normalized.servo.eureka-connection-cleaner-time.count": 0.0,
     "gauge.servo.eureka-connection-cleaner-time.min": 0.0,
     "gauge.servo.eureka-connection-cleaner-time.max": 0.0,
     "counter.servo.eureka-connection-cleaner-failure": 0,
     "httpsessions.max": -1,
     "httpsessions.active": 0
 }

如果只关心某部分参数可以使用：http://IP:port/metrics/mem来查看特定参数的值

{"mem":373311}