RHEL: 1. Install Java

Graphlytic requires Java to be installed. For required version see Requirements. If you have installed required version you can skip installation of Java.

You can test whether you have the correct Java platform by running from command line:

$ java -version
java version "1.8.0_65"
Java(TM) SE Runtime Environment (build 1.8.0_65-b17)
Java HotSpot(TM) Client VM (build 25.65-b01, mixed mode, sharing) 

Install Java

For full installation instruction of AdoptOpenJDK see their official documentation.

1. Add the appropriate RPM repository to your /etc/yum.repos.d/adoptopenjdk.repo file, by running the following command:

cat <<EOF > /etc/yum.repos.d/adoptopenjdk.repo
[AdoptOpenJDK]
name=AdoptOpenJDK
baseurl=http://adoptopenjdk.jfrog.io/adoptopenjdk/rpm/centos/7/$(uname -m)
enabled=1
gpgcheck=1
gpgkey=https://adoptopenjdk.jfrog.io/adoptopenjdk/api/gpg/key/public
EOF

2. Install java package

$ yum install adoptopenjdk-8-hotspot

To use Java 11 install adoptopenjdk-11-hotspot package.

Confirm that Java Works

Once the steps above have been done, it should be possible to check of java version and see output similar to this:

$ java -version
java version "1.8.0_65"
Java(TM) SE Runtime Environment (build 1.8.0_65-b17)
Java HotSpot(TM) Client VM (build 25.65-b01, mixed mode, sharing)