前提是已经安装好Ganglia和Hadoop集群
1 Master节点配置hadoop-metrics2.properties
# syntax: [prefix].[source|sink|jmx].[instance].[options] # See package.html for org.apache.hadoop.metrics2 for details *.sink.file.class=org.apache.hadoop.metrics2.sink.FileSink #namenode.sink.file.filename=namenode-metrics.out #datanode.sink.file.filename=datanode-metrics.out #jobtracker.sink.file.filename=jobtracker-metrics.out #tasktracker.sink.file.filename=tasktracker-metrics.out #maptask.sink.file.filename=maptask-metrics.out #reducetask.sink.file.filename=reducetask-metrics.out # Below are for sending metrics to Ganglia # # for Ganglia 3.0 support # *.sink.ganglia.class=org.apache.hadoop.metrics2.sink.ganglia.GangliaSink30 # # for Ganglia 3.1 support *.sink.ganglia.class=org.apache.hadoop.metrics2.sink.ganglia.GangliaSink31 *.sink.ganglia.period=10 # default for supportsparse is false *.sink.ganglia.supportsparse=true *.sink.ganglia.slope=jvm.metrics.gcCount=zero,jvm.metrics.memHeapUsedM=both *.sink.ganglia.dmax=jvm.metrics.threadsBlocked=70,jvm.metrics.memHeapUsedM=40 namenode.sink.ganglia.servers=master:8649 tasktracker.sink.ganglia.servers=master:8649 maptask.sink.ganglia.servers=master:8649 reducetask.sink.ganglia.servers=master:8649
2 slave节点配置hadoop-metrics2.properties
# syntax: [prefix].[source|sink|jmx].[instance].[options] # See package.html for org.apache.hadoop.metrics2 for details *.sink.file.class=org.apache.hadoop.metrics2.sink.FileSink #namenode.sink.file.filename=namenode-metrics.out #datanode.sink.file.filename=datanode-metrics.out #jobtracker.sink.file.filename=jobtracker-metrics.out #tasktracker.sink.file.filename=tasktracker-metrics.out #maptask.sink.file.filename=maptask-metrics.out #reducetask.sink.file.filename=reducetask-metrics.out # Below are for sending metrics to Ganglia # # for Ganglia 3.0 support # *.sink.ganglia.class=org.apache.hadoop.metrics2.sink.ganglia.GangliaSink30 # # for Ganglia 3.1 support *.sink.ganglia.class=org.apache.hadoop.metrics2.sink.ganglia.GangliaSink31 *.sink.ganglia.period=10 # default for supportsparse is false *.sink.ganglia.supportsparse=true *.sink.ganglia.slope=jvm.metrics.gcCount=zero,jvm.metrics.memHeapUsedM=both *.sink.ganglia.dmax=jvm.metrics.threadsBlocked=70,jvm.metrics.memHeapUsedM=40 datanode.sink.ganglia.servers=master:8649 jobtracker.sink.ganglia.servers=master:8649 maptask.sink.ganglia.servers=master:8649 reducetask.sink.ganglia.servers=master:8649
3 重启Hadoop和ganglia