root@zrui-ThinkPad-E455:/opt/hadoop-1.2.1/conf#   主机名就是zrui-ThinkPad-E455    core-site.xml中

<configuration>

<property>

    <name>hadoop.tmp.dir</name>

    <value>/hadoop</value>

  </property>

  <property>

    <name>fs.default.name</name>

    <value>hdfs://zrui-ThinkPad-E455:9000</value>

  </property>

  <property>

   <name>dfs.name.dir</name>

   <value>/hadoop/name</value>

 </property>

</configuration>

mapred-site.xml 中

<configuration>

<property>

    <name>mapred.job.tracker</name>

    <value>zrui-ThinkPad-E455:9001</value>

</property>

</configuration>