jdk8安装配置

tar -zxvf /opt/software/jdk-8u191-linux-x64.tar.gz -C /opt/module/java/

scp -r /opt/module/java/jdk1.8.0_191 root@node02:/opt/module/java/
scp -r /opt/module/java/jdk1.8.0_191 root@node03:/opt/module/java/

vim /etc/profile.d/bigdata.sh
# JAVA_HOME 指定jdk的路径，也就是解压的路径
export JAVA_HOME=/opt/module/java/jdk1.8.0_191
# 指定 classpath
export CLASSPATH=.:$JAVA_HOME/lib/tools.jar:$JAVA_HOME/lib/dt.jar:$JAVA_HOME/lib
export PATH=$PATH:$JAVA_HOME/bin

scp -r /etc/profile.d/bigdata.sh root@node02:/etc/profile.d/
scp -r /etc/profile.d/bigdata.sh root@node03:/etc/profile.d/

source /etc/profile.d/bigdata.sh

java -version