CentOS6.3 detailed steps for installing Hadoop2.4.1

This article mainly explains "the detailed steps of installing Hadoop2.4.1 in CentOS6.3". Interested friends may wish to have a look. The method introduced in this paper is simple, fast and practical. Let's let the editor take you to learn the detailed steps of installing Hadoop2.4.1 in CentOS6.3.

Modify the mapping relationship between hostname and IP

Vim / etc/hosts

192.168.1.168 cacgg168

Install 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

Install hadoop

Mkdir / cloud

# decompress to / cloud/ directory

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

Modify the configuration file

Hadoop-env.sh

Vim hadoop-env.sh

# Line 27

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

Core-site.xml

Fs.defaultFS

Hdfs://cacgg168:9000

Hadoop.tmp.dir

/ cloud/hadoop-2.4.1/tmp

Hdfs-site.xml

Dfs.replication

one

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

Mv mapred-site.xml.template mapred-site.xml

Mapreduce.framework.name

Yarn

Yarn-site.xml

Yarn.resourcemanager.hostname

Cacgg168

Yarn.nodemanager.aux-services

Mapreduce_shuffle

Export HADOOP_HOME=/cloud/hadoop-2.4.1

$HADOOP_HOME/bin:$HADOOP_HOME/sbin

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