CDH 03.JDK安装配置

1、多种安装形式自己选择rpm、yum，压缩包形式

2、安装：

yum -y install oracle-j2sdk1.8.x86_64

3、配置环境变量

echo "" >> /etc/profile;
echo "#set Java environment" >> /etc/profile;
echo "export JAVA_HOME=/usr/java/jdk1.8.0_181-cloudera" >> /etc/profile;
echo "export JRE_HOME=$JAVA_HOME/jre" >> /etc/profile;
echo "export CLASSPATH=.:$JAVA_HOME/lib:$JRE_HOME/lib:$CLASSPATH" >> /etc/profile;
echo "export PATH=$JAVA_HOME/bin:$JRE_HOME/bin:$PATH" >> /etc/profile;

4、同步到其他服务器
cd ~/scripts/;
sh ./ssh_to_all_node.sh "yum -y install oracle-j2sdk1.8.x86_64"
sh ./sync_to_all_node.sh /etc/profile /etc/;