1.设置ip service network restart
2.关闭防火墙 service iptables stop
3.设置主机名 hostname hadoop
4.ip与hostname绑定 vi /etc/hosts vi /etc/sysconfig/network
将HOSTNAME改为hadoop
5.设置ssh免密码登陆 ssh-keygen -t rsa
cp ~/.ssh/id_rsa.pub ~/.ssh/authorized_keys
(如果存在authorized_keys的话，将生成的id_rsa.pub中的内容，复制到authorized_keys中)
6.安装jdk cd /usr/local
tar -zxvf jdk-7u79-linux-x64.tar.gz
vi /etc/profile中增加内容
export JAVA_HOME=/usr/local/jdk
export PATH=.:$JAVA_HOME/bin:$PATH
source /etc/profile
java -version
7.安装hadoop
tar -zxvf hadoop-1.1.2.tar.gz
mv hadoop-1.1.2 hadoop
vi /etc/profile 增加内容如下:
export JAVA_HOME=/usr/local/jdk
export HADOOP_HOME=/usr/local/hadoop
export PATH=.:$HADOOP_HOME/bin:$JAVA_HOME/bin:$PATH
source /etc/profile
修改conf目录下的配置文件hadoop-env.sh、core-site.xml、hdfs-site.xml、mapred-site.xml
1.hadoop-env.sh
export JAVA_HOME=/usr/local/jdk/
2.core-site.xml
<configuration>
<property>
<name>fs.default.name</name>
<value>hdfs://hadoop:9000</value>
</property>
<property>
<name>hadoop.tmp.dir</name>
<value>/usr/local/hadoop/tmp</value>
</property>
</configuration>
3.hdfs-site.xml
<configuration>
<property>
<name>dfs.replication</name>
<value>1</value>
</property>
<property>
<name>dfs.permissions</name>
<value>false</value>
</property>
</configuration>
4.mapred-site.xml
<configuration>
<property>
<name>mapred.job.tracker</name>
<value>hadoop:9001</value>
</property>
</configuration>
8.格式化hadoop&启动hadoop
hadoop namenode -format
start-all.sh
9.验证
执行命令jps 如果看到5个新的java进程，分别是NameNode、SecondaryNameNode、DataNode、JobTracker、TaskTracker 浏览器查看，http://hadoop:50070 http://hadoop:50030
