Ganglia监控Hadoop多节点集群

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。在阅读以下博客后，我安装了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Ganglia.pdf的监控（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只给出所有节点的系统度量（内存、磁盘等）。但它没有显示Hadoop指标（如jvm、mapred指标等等）。我该如何解决这个问题？

我确实用Ganglia来处理Hadoop，是的，我在Ganglia上看到了很多Hadoop的指标（容器、映射任务、vmem）。事实上，Hadoop向Ganglio报告的具体指标有上百个。

《霍坎布洛斯邮报》就足够了。

我在主节点上编辑hadoop-metrics2.properties，内容是：

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

我也在从属设备上编辑相同的文件：

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

请记住，在更改文件后重新启动Hadoop和Ganglia。

我希望这对你有帮助。

感谢大家，如果您使用的是旧版本的Hadoop，请放入以下文件（来自新版Hadoop）===>

GangliaContext31.java
GangliaContext.java

在路径===>hadoop/src/core.org/apache/hadoop/metrics/granglia中来自Hadoop的新版本。

使用ant编译Hadoop（并在编译时设置适当的代理）。如果它给出的错误类似于函数定义丢失，那么将该函数定义（来自新版本）放在适当的java文件中，然后再次编译Hadoop。它会起作用的。

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