1.配置hadoop的core-site.xml文件,配置内容如下

<configuration>
        <property>
                <name>fs.defaultFS</name>
                <value>hdfs://node1:9000</value>
        </property>
        <property>
                <name>hadoop.tmp.dir</name>
                <value>/opt/hadoop-2.5</value>
        </property>
</configuration>