单机hadoop环境搭建

1、解压hadoop-2.0.0-cdh4.5.0.tar.gz， tar zxvf hadoop-2.0.0-cdh4.5.0.tar.gz，配置环境变量 vi .bash_profile，新增配置

#hadoop settings

export HADOOP_HOME=/utxt/soft/hadoop-2.0.0-cdh4.5.0

export PATH=$HADOOP_HOME/bin:$HADOOP_HOME/sbin:$PATH

export HADOOP_HOME_WARN_SUPPRESS=1

export CLASSPATH=$HADOOP_HOME/lib:$CLASSPATH

export HADOOP_COMMON_LIB_NATIVE_DIR=$HADOOP_HOME/lib/native

export HADOOP_OPTS="-Djava.library.path=$HADOOP_HOME/lib"

注：export HADOOP_HOME为hadoop安装目录

2、进入/hadoop-2.0.0-cdh4.5.0/etc/hadoop目录，修改core-site.xml，hdfs-site.xml，mapred-site.xml和yarn-site.xml，修改如下

3、修改hadoop-env.sh，export JAVA_HOME修改为实际jdk路径

4、hadoop启动，start-all.sh,启动后进程如截图