hadoop - Ganglia 监控 Hadoop 多节点集群

Question

我想使用 ganglia 监控 Hadoop(Hadoop 版本 0.20.2)多节点集群。我的 Hadoop 工作正常。我在阅读以下博客后安装了 Ganglia---

http://hakunamapdata.com/ganglia-configuration-for-a-small-hadoop-cluster-and-some-troubleshooting/

http://hokamblogs.blogspot.in/2013/06/ganglia-overview-and-installation-on.html

我还学习了 Monitoring with Ganglia.pdf(附录 BGanglia 和 Hadoop/HBase)。

I have modified only the  following lines in **Hadoop-metrics.properties**(same on all Hadoop Nodes)==>



// Configuration of the "dfs" context for ganglia
 dfs.class=org.apache.hadoop.metrics.ganglia.GangliaContext
 dfs.period=10
 dfs.servers=192.168.1.182:8649

// Configuration of the "mapred" context for ganglia
mapred.class=org.apache.hadoop.metrics.ganglia.GangliaContext
mapred.period=10
mapred.servers=192.168.1.182:8649:8649


// Configuration of the "jvm" context for ganglia
 jvm.class=org.apache.hadoop.metrics.ganglia.GangliaContext
 jvm.period=10
 jvm.servers=192.168.1.182:8649


 **gmetad.conf** (Only on Hadoop master Node )


data_source "Hadoop-slaves" 5 192.168.1.182:8649
RRAs "RRA:AVERAGE:0.5:1:302400" //Because i want  to analyse one week data.



 **gmond.conf** (on all the Hadoop Slave nodes and Hadoop Master)

globals {
  daemonize = yes
  setuid = yes
  user = ganglia
  debug_level = 0
  max_udp_msg_len = 1472
  mute = no
  deaf = no
  allow_extra_data = yes
  host_dmax = 0 /*secs */
  cleanup_threshold = 300 /*secs */
  gexec = no
  send_metadata_interval = 0
}

cluster {
  name = "Hadoop-slaves"
  owner = "Sandeep Priyank"
  latlong = "unspecified"
  url = "unspecified"
}

/* The host section describes attributes of the host, like the location */
host {
  location = "CASL"
}

/* Feel free to specify as many udp_send_channels as you like.  Gmond
   used to only support having a single channel */
udp_send_channel {
  host = 192.168.1.182
  port = 8649
  ttl = 1
}
/* You can specify as many udp_recv_channels as you like as well. */
udp_recv_channel {
  port = 8649

}

/* You can specify as many tcp_accept_channels as you like to share
   an xml description of the state of the cluster */
tcp_accept_channel {
  port = 8649
 }

现在 Ganglia 只为所有节点提供系统指标(内存、磁盘等)。但它没有显示 Hadoop 指标(如 jvm、mapred 指标等)在网络界面上。我该如何解决这个问题？

Answer 1

我确实将 Hadoop 与 Ganglia 结合使用，是的，我在 Ganglia 上看到了很多 Hadoop 指标(容器、映射任务、vmem)。事实上，Hadoop 特定向 Ganglio 报告了数百个指标。

hokamblogs Post 就足够了。

我在master节点上编辑hadoop-metrics2.properties，内容为:

namenode.sink.ganglia.class=org.apache.hadoop.metrics2.sink.ganglia.GangliaSink31
namenode.sink.ganglia.period=10
namenode.sink.ganglia.servers=gmetad_hostname_or_ip:8649

resourcemanager.sink.ganglia.class=org.apache.hadoop.metrics2.sink.ganglia.GangliaSink31
resourcemanager.sink.ganglia.period=10
resourcemanager.sink.ganglia.servers=gmetad_hostname_or_ip:8649

我还在从服务器上编辑相同的文件:

datanode.sink.ganglia.class=org.apache.hadoop.metrics2.sink.ganglia.GangliaSink31
datanode.sink.ganglia.period=10
datanode.sink.ganglia.servers=gmetad_hostname_or_ip:8649

nodemanager.sink.ganglia.class=org.apache.hadoop.metrics2.sink.ganglia.GangliaSink31
nodemanager.sink.ganglia.period=10
nodemanager.sink.ganglia.servers=gmetad_hostname_or_ip:8649

您记得在更改文件后重新启动 Hadoop 和 Ganglia。

希望对你有帮助