Java

This page describes java installation for clon machines.

RHEL7

We are using java-11-openjdk, install it with command (as well as groovy):

yum install java-11-openjdk-devel groovy
alternatives --config java

DO NOT DO IT Installation from tar:

cp /usr/downloads/jdk-8u211-linux-x64.tar.gz /usr/lib/jvm
cd /usr/lib/jvm/
tar xvf jdk-8u211-linux-x64.tar.gz
rm jdk-8u211-linux-x64.tar.gz

Set link to be compatible with older installation:

cd /usr/lib/jvm
ln -s jdk1.8.0_211 java-1.8.0-oracle

May not need following:

cd /usr/lib/jvm/jdk1.8.0_211/
alternatives --install /usr/bin/java java /usr/lib/jvm/jdk1.8.0_211/bin/java 2
alternatives --config java # type the number of desired version

##alternatives --install /usr/bin/jar jar /usr/lib/jvm/jdk1.8.0_211/bin/jar 2
##alternatives --install /usr/bin/javac javac /usr/lib/jvm/jdk1.8.0_211/bin/javac 2
##alternatives --set jar /usr/lib/jvm/jdk1.8.0_211/bin/jar
##alternatives --set javac /usr/lib/jvm/jdk1.8.0_211/bin/javac

Command

java -version

should return

java version "1.8.0_211"
Java(TM) SE Runtime Environment (build 1.8.0_211-b12)
Java HotSpot(TM) 64-Bit Server VM (build 25.211-b12, mixed mode)

RHEL7, RHEL6

NOT SUPPORTED BY RHEL ANY MORE

Install following packages:

yum install java-1.8.0-oracle
yum install java-1.8.0-oracle-devel java-1.8.0-oracle-javafx java-1.8.0-oracle-jdbc java-1.8.0-oracle-plugin java-1.8.0-oracle-src

DO NOT DO THAT ! Fix symbolic links in /etc/alternatives area:

cd /etc/alternatives
rm -f java
ln -s /usr/lib/jvm/java-1.8.0-oracle-1.8.0.51-1jpp.2.el7_1.x86_64/jre/bin/java java
rm -f javac
ln -s /usr/lib/jvm/java-1.8.0-oracle-1.8.0.51-1jpp.2.el7_1.x86_64/bin/javac javac

Install groovy (RHEL7):

yum install groovy groovy-javadoc

Install groovy (RHEL6):