1.a1 192.168.9.1 (master)
a2 192.168.9.2 (slave1)
a3 192.168.9.3 (slave2)
修改/etc/hosts
2.3台机器 创建hadoop 用户
hadoop 密码:123
3.安装JDK (3台都安装)
[root@a1 ~]# chmod 777 jdk-6u38-ea-bin-b04-linux-i586-31_oct_2012-rpm.bin
[root@a1 ~]# ./jdk-6u38-ea-bin-b04-linux-i586-31_oct_2012-rpm.bin
[root@a1 ~]# cd /usr/java/jdk1.6.0_38/
[root@a1 jdk]# vi /etc/profile
export JAVA_HOME=/usr/java/jdk1.6.0_38
export JAVA_BIN=/usr/java/jdk1.6.0_38/bin
export PATH=$PATH:$JAVA_HOME/bin
export CLASSPATH=.:$JAVA_HOME/lib/dt.jar:$JAVA_HOME/lib/tools.jar
export JAVA_HOME JAVA_BIN PATH CLASSPATH
重启你的系统 或 source /etc/profile
[root@a1 ~]# /usr/java/jdk1.6.0_38/bin/java -version
java version "1.6.0_38-ea"
Java(TM) SE Runtime Environment (build 1.6.0_38-ea-b04)
Java HotSpot(TM) Client VM (build 20.13-b02, mixed mode, sharing)
4.安装hadoop (3台都安)
[root@a1 ~]# tar zxvf hadoop-0.20.2-cdh3u5.tar.gz -C /usr/local
编辑hadoop 配置文件
[root@a1 ~]# cd /usr/local/hadoop-0.20.2-cdh3u5/conf/
[root@a1 conf]# vi hadoop-env.sh
添加
export JAVA_HOME=/usr/java/jdk1.6.0_38
设置namenode启动端口
[root@a1 conf]# vi core-site.xml
添加
<configuration>
<property>
<name>fs.default.name</name>
<value>hdfs://a1:9000</value>
</property>
<property>
<name>hadoop.tmp.dir</name>
<value>/home/hadoop/hadoop-0.20.2-cdh3u5/tmp</value>
</property>
</configuration>
mkdir tmp 创建tmp目录
设置datanode节点数为2
[root@a1 conf]# vi hdfs-site.xml
添加
<configuration>
<property>
