core-site.xml
<?xml version="1.0"?>
<?xml-stylesheet type="text/xsl" href="configuration.xsl"?>
<!-- Put site-specific property overrides in this file. -->
<configuration>
	  <property>-------指定NameNode主机名与端口号
		    <name>fs.default.name</name>
		    <value>hdfs://localhost:9000</value>
	  </property>
	  <property>
		    <name>hadoop.tmp.dir</name>
		    <value>/opt/data/tmp</value>
	  </property>
</configuration>
hdfs-site.xml
<?xml version="1.0"?>
<?xml-stylesheet type="text/xsl" href="configuration.xsl"?>
<!-- Put site-specific property overrides in this file. -->
<configuration>
	  <property>-------设置HDFS的副本数
		    <name>dfs.replication</name>
		    <value>1</value>
	  </property>
	  <property>
		    <name>dfs.permissions</name>
		    <value>false</value>
	  </property>
</configuration>
mapred-site.xml
<?xml version="1.0"?>
<?xml-stylesheet type="text/xsl" href="configuration.xsl"?>
<!-- Put site-specific property overrides in this file. -->
<configuration>
	  <property>-------指定JobTracker的主机与端口号
		    <name>mapred.job.tracker</name>
		    <value>localhost:9000</value>
	  </property>
</configuration>
masters---------指定SecondaryNameNode的位置
localhost
slavers----------指定DataNode和TaskTracker的位置
localhost
格式化
[hadoop@localhost bin]$ hadoop namenode -format
原文:http://www.cnblogs.com/longjshz/p/4396522.html