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In a clustered environment, Namenode and Jobtracker are not on a single node

Source: Internet
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Assuming Namenode on HADOOP1, Jobtracker on HADOOP2

The node where the 1.1 Namenode is located is represented by the value of the fs.default.name of the configuration file Core-site.xml.
The value or the hdfs://hadoop1:9000

The Jobtracker node is represented by the Mapred.job.tracker value of the configuration file MAPRED-SITE.MLX.
Value modified to http://hadoop2:9001

1.2 Execute command on HADOOP1 hadoop-daemon.sh start Namenode
Execute command on HADOOP2 hadoop-daemon.sh start Jobtracker
Execute command on HADOOP2 hadoop-daemon.sh start Secondarynamenode
Execute command on HADOOP1 hadoop-daemons.sh start Datanode
Execute command on HADOOP1 hadoop-daemons.sh start Tasktracker

In a clustered environment, Namenode and Jobtracker are not on a single node

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