jmxtrans 和 kafka 不工作

Question

我正在尝试将 Kafka 指标（版本 0.8.2）发送到我的 grafana 服务器。不幸的是，我只能获得 java.lang 指标，但没有 kafka 指标。现在连接 jmxtrans 和 jconsoel 是个问题，我可以看到 Kafka 的 MBean。

jmxtrans的配置：

{
  "servers" : [ {
    "port" : "9393",
    "host" : "localhost",
    "queries" : [  {
      "obj" : "kafka.network:type=RequestMetrics,name=LocalTimeMs,request=ConsumerMetadata",
      "attr" : [ "Count" ],
      "outputWriters" : [ {
        "@class" : "com.googlecode.jmxtrans.model.output.GraphiteWriter",
        "settings" : {
          "port" : 2003,
          "host" : "localhost"
        }
      } ]
    }, {
      "obj" : "kafka.network:type=RequestMetrics,name=RequestQueueTimeMs,request=FetchConsumer",
      "attr" : [ "Count" ],
      "outputWriters" : [ {
        "@class" : "com.googlecode.jmxtrans.model.output.GraphiteWriter",
        "settings" : {
          "port" : 2003,
          "host" : "localhost"
        }
      } ]
    }, {
      "obj" : "kafka.network:type=RequestMetrics,name=TotalTimeMs,request=OffsetFetch",
      "attr" : [ "Count" ],
      "outputWriters" : [ {
        "@class" : "com.googlecode.jmxtrans.model.output.GraphiteWriter",
        "settings" : {
          "port" : 2003,
          "host" : "localhost"
        }
      } ]
    }, {
      "obj" : "kafka.network:type=RequestMetrics,name=TotalTimeMs,request=Offsets",
      "attr" : [ "Count" ],
      "outputWriters" : [ {
        "@class" : "com.googlecode.jmxtrans.model.output.GraphiteWriter",
        "settings" : {
          "port" : 2003,
          "host" : "localhost"
        }
      } ]
    }
   ],
"numQueryThreads" : 2
  } ]
}

jmxtrans 的日志：

15:52:11.564 [ServerScheduler_Worker-10] DEBUG org.quartz.core.JobRunShell - Calling execute on job ServerJob.localhost:9393-1443714611563-0428747962
15:52:11.564 [ServerScheduler_Worker-10] DEBUG c.googlecode.jmxtrans.jobs.ServerJob - +++++ Started server job: Server [host=localhost, port=9393, url=null, cronExpression=null, numQueryThreads=2]
15:52:11.569 [ServerScheduler_Worker-10] DEBUG com.googlecode.jmxtrans.jmx.JmxUtils - ----- Creating 4 query threads
15:52:11.638 [pool-60-thread-2] DEBUG c.g.jmxtrans.jmx.JmxQueryProcessor - Executing queryName [kafka.network:name=RequestQueueTimeMs,request=FetchConsumer,type=RequestMetrics] from query [Query [obj=kafka.network:type=RequestMetrics,name=RequestQueueTimeMs,request=FetchConsumer, useObjDomainAsKey:false, resultAlias=null, attr=[Count]]]
15:52:11.638 [pool-60-thread-2] DEBUG c.g.jmxtrans.jmx.JmxQueryProcessor - Finished running outputWriters for query: Query [obj=kafka.network:type=RequestMetrics,name=RequestQueueTimeMs,request=FetchConsumer, useObjDomainAsKey:false, resultAlias=null, attr=[Count]]
15:52:11.640 [pool-60-thread-2] DEBUG c.g.jmxtrans.jmx.JmxQueryProcessor - Executing queryName [kafka.network:name=TotalTimeMs,request=OffsetFetch,type=RequestMetrics] from query [Query [obj=kafka.network:type=RequestMetrics,name=TotalTimeMs,request=OffsetFetch, useObjDomainAsKey:false, resultAlias=null, attr=[Count]]]
15:52:11.640 [pool-60-thread-2] DEBUG c.g.jmxtrans.jmx.JmxQueryProcessor - Finished running outputWriters for query: Query [obj=kafka.network:type=RequestMetrics,name=TotalTimeMs,request=OffsetFetch, useObjDomainAsKey:false, resultAlias=null, attr=[Count]]
15:52:11.641 [pool-60-thread-2] DEBUG c.g.jmxtrans.jmx.JmxQueryProcessor - Executing queryName [kafka.network:name=TotalTimeMs,request=Offsets,type=RequestMetrics] from query [Query [obj=kafka.network:type=RequestMetrics,name=TotalTimeMs,request=Offsets, useObjDomainAsKey:false, resultAlias=null, attr=[Count]]]
15:52:11.641 [pool-60-thread-2] DEBUG c.g.jmxtrans.jmx.JmxQueryProcessor - Finished running outputWriters for query: Query [obj=kafka.network:type=RequestMetrics,name=TotalTimeMs,request=Offsets, useObjDomainAsKey:false, resultAlias=null, attr=[Count]]
15:52:11.642 [pool-60-thread-1] DEBUG c.g.jmxtrans.jmx.JmxQueryProcessor - Executing queryName [kafka.network:name=LocalTimeMs,request=ConsumerMetadata,type=RequestMetrics] from query [Query [obj=kafka.network:type=RequestMetrics,name=LocalTimeMs,request=ConsumerMetadata, useObjDomainAsKey:false, resultAlias=null, attr=[Count]]]
15:52:11.642 [pool-60-thread-1] DEBUG c.g.jmxtrans.jmx.JmxQueryProcessor - Finished running outputWriters for query: Query [obj=kafka.network:type=RequestMetrics,name=LocalTimeMs,request=ConsumerMetadata, useObjDomainAsKey:false, resultAlias=null, attr=[Count]]
15:52:11.643 [ServerScheduler_Worker-10] DEBUG c.googlecode.jmxtrans.jobs.ServerJob - +++++ Finished server job: Server [host=localhost, port=9393, url=null, cronExpression=null, numQueryThreads=2]

对我来说，看起来 jmxtrans 可以毫无问题地连接并尝试获取数据，但根本没有从 kafka 指标中获取任何数据。

Kafka 的 JMX 选项：

-Djava.net.preferIPv4Stack=true -Dcom.sun.management.jmxremote -Dcom.sun.management.jmxremote.authenticate=false -Dcom.sun.management.jmxremote.ssl=false -Dcom.sun.management.jmxremote.port=9393 -Djava.rmi.server.hostname=example.com -Dcom.sun.management.jmxremote.rmi.port=9011

知道为什么 Kafka 指标不可用吗？

谢谢。

Answer 1

某些版本的 Kafka 引用了 JMX 元素（您可以在 jconsole 中看到带有引号的属性）。对于 Kafka 的未来版本，这已经/正在发生变化。查看这篇文章 (How to monitor Kafka broker using jmxtrans?) 了解详细信息，但如果您使用带引号的字符串，它应该可以工作（参见下面的示例：）

"obj": "\"kafka.server\":type=\"BrokerTopicMetrics\",name \"AllTopicsLogBytesAppendedPerSec\"", "attr": [ "Count" ]

请注意，“obj”值需要额外的引号。当我尝试这个时，JMXTRANS 在将正确的（引用的）值放入 obj 字符串后提供了有效的输出......