1關閉防火牆 

(防止發生ui介面無法登陸)

#關閉防火牆
service iptables stop
#檢視防火牆開機啟動狀態
chkconfig iptables --list
#關閉防火牆開機啟動
chkconfig iptables off

2.安裝hadoop和jdk  

(可以直接執行下面程式碼)

#create a director hadoop
mkdir /hadoop

#tar pakage
tar -xzvf hadoop-2.7.0.tar.gz  -C /hadoop/
tar -xzvf jdk-8u65-linux-x64.tar.gz  -C /hadoop/
tar -xvf  hadoop-native-64-2.7.0.tar -C /hadoop/hadoop-2.7.0/lib/native/  

#add enviromnet variable
echo  'export JAVA_HOME=/hadoop/jdk1.8.0_65' >> /etc/profile
echo  'export HADOOP_HOME=/hadoop/hadoop-2.7.0' >> /etc/profile
echo  'export PATH=$PATH:$JAVA_HOME/bin:$HADOOP_HOME/bin' >> /etc/profile
source /etc/profile
 

3.修改hadoop的配置檔案

檔案都在 /hadoop/hadoop-2.7.0/etc/hadoop

3.1修改hadoop-env.sh 檔案

export JAVA_HOME=/hadoop/jdk1.8.0_65

3.2修改core-site.xml

<configuration>
	<property>
        <name>fs.defaultFS</name>
        <value>hdfs://localhost:9000</value>
	</property>
	<property>
        <name>hadoop.tmp.dir</name>
        <value>/hadoop/hadoop-2.7.0/tmp</value>
	</property>
</configuration>
 

3.3修改檔案hdfs-site.xml

<configuration>
    <property>
        <name>dfs.replication</name>
        <value>2</value>
     </property>
        <property>
        <name>dfs.namenode.name.dir</name>
         <value>/hadoop/hadoop-2.7.0/dfs/name</value>
    </property>
        <property>
                <name>dfs.datanode.data.dir</name>
                <value>/hadoop/hadoop-2.7.0/dfs/data</value>
        </property>
</configuration>
 

3.4修改檔案mapred-site.xml

<configuration>
	<!-- 指定mr執行在yarn上 -->
	<property>
        <name>mapreduce.framework.name</name>
        <value>yarn</value>
	</property>
</configuration>

3.5編輯檔案yarn-site.xml 

<configuration>
	<property>
			<name>yarn.resourcemanager.hostname</name>
			<value>localhost</value>
	</property>
	<property>
			<name>yarn.nodemanager.aux-services</name>
			<value>mapreduce_shuffle</value>
	</property>
</configuration>

4.格式化namenode

hdfs namenode -format

5.啟動namenode和yarn

#啟動namenode和yarn
cd /hadoop/hadoop-2.7.0/
sbin/start-dfs.sh 
sbin/start-yarn.sh  

6.驗證hadoop

[[email protected] hadoop-2.7.0]# jps
3056 DataNode
2961 NameNode
3237 SecondaryNameNode
3343 Jps

附件下載地址連結：http://pan.baidu.com/s/1o7FkPho 密碼：oblr

（內附了在centos6下一鍵安裝hadoop2.7.0的壓縮包hadoop_one_install.zip）