hadoop安装

下载hadoop  :    http://hadoop.apache.org/releases.html

put    hadoop-*.tar.gz   /usr/local

mv    hadoop-*   hadoop

vi  /etc/profile

追加

export HADOOP_HOME=/usr/local/hadoop  
export PATH=$PATH:$HADOOP_HOME/bin

vi /usr/localhadoop/etc/hadoop/hadoop-env.sh

修改 export JAVA_HOME=/usr/java/jdk1.7.0_80/

source /etc/profile

source /usr/localhadoop/etc/hadoop/hadoop-env.sh

hadoop version

测试hadoop版本

firewall-cmd --add-port=9000/tcp --permanent

查询端口号：firewall-cmd --query-port=9000/tcp

firewall-cmd --reload