Configuring Hadoop on NameNode

cd /opt/Hadoop/conf
    
vi core-site.xml

Find and change the following properties with these values:

Filename	Property name	Property value
`core-site.xml`	`fs.default.name`	`hdfs://namenode:9000/`
	`dfs.permissions`	`False`
`hdfs-site.xml`	`dfs.data.dir`	`/opt/hadoop/hadoop/dfs/namenode/data`
	`dfs.name.dir`	`/opt/hadoop/hadoop/dfs/namenode`
	`dfs.replication`	`1`
`mapred-site.xml`	`mapred.job.tracker`	`namenode:9001`

    vi masters
    namenode
    
    vi slaves
    datanode1
    datanode2
    datanode3