#：安装jdk环境

root@ubuntu:/usr/local/src# ls

jdk-8u191-linux-x64.tar.gz

root@ubuntu:/usr/local/src# tar xf jdk-8u191-linux-x64.tar.gz

#：链接到目录

root@ubuntu:/usr/local/src# ln -sv /usr/local/src/jdk1.8.0_191 /usr/local/jdk

#：配置环境变量

root@ubuntu:/usr/local/src# vim /etc/profile

export JAVA_HOME=/usr/local/jdk

export TOMCAT_HOME=/apps/tomcat

export PATH=$JAVA_HOME/bin:$JAVA_HOME/jre/bin:$TOMCAT_HOME/bin:$PATH

export CLASSPATH=.$CLASSPATH:$JAVA_HOME/lib:$JAVA_HOME/jre/lib:$JAVA_HOME/lib/tools.jar

root@ubuntu:/usr/local/src# source /etc/profile

#：测试

root@ubuntu:/usr/local/src# java -version

java version "1.8.0_191"

Java(TM) SE Runtime Environment (build 1.8.0_191-b12)

Java HotSpot(TM) 64-Bit Server VM (build 25.191-b12, mixed mode)

#：在slave节点创建跟master节点相同的数据目录
root@ubuntu:/usr/local/src# mkdir /var/lib/jenkins -p