CentOS6.3安装Hadoop2.4.1

修改主机名和IP的映射关系

vim /etc/hosts

192.168.1.168        cacgg168

安装java

export JAVA_HOME=/usr/java/jdk1.6.0_45

export JRE_HOME=/usr/java/jdk1.6.0_45/jre

export CLASSPATH=.:$JAVA_HOME/lib:$JRE_HOME/lib:$CLASSPATH

export PATH=$JAVA_HOME/bin:$JRE_HOME/bin:$JAVA_HOME:$PATH

安装hadoop

mkdir /cloud

#解压到/cloud/目录下

tar -zxvf hadoop-2.4.1.tar.gz -C /cloud/

修改配置文件

hadoop-env.sh

vim hadoop-env.sh

#第27行

export JAVA_HOME=/usr/java/jdk1.6.0_45

core-site.xml

<property>

<name>fs.defaultFS</name>

<value>hdfs://cacgg168:9000</value>

</property>

<property>

<name>hadoop.tmp.dir</name>

<value>/cloud/hadoop-2.4.1/tmp</value>

</property>

hdfs-site.xml

<property>

<name>dfs.replication</name>

<value>1</value>

</property>

mapred-site.xml (mv mapred-site.xml.template mapred-site.xml)

mv mapred-site.xml.template mapred-site.xml

<property>

<name>mapreduce.framework.name</name>

<value>yarn</value>

</property>

yarn-site.xml

<property>

<name>yarn.resourcemanager.hostname</name>

<value>cacgg168</value>

</property>

<property>

<name>yarn.nodemanager.aux-services</name>

<value>mapreduce_shuffle</value>

</property>

export HADOOP_HOME=/cloud/hadoop-2.4.1

$HADOOP_HOME/bin:$HADOOP_HOME/sbin