Then, after the close of ssh-free installation, we jdk to install. jdk oracle can be downloaded directly from the official online face. Since I am here it is to generate vmware four nodes, so I'll download jdk version uploaded to the server each centOS above by xftp. And then extracting installer.
jdk Download
Remember to choose authorization before downloading
https://www.oracle.com/technetwork/java/javase/downloads/jdk8-downloads-2133151.html
Transfer files to install on vmware server
I xftp pass more convenient, using sftp way. Upload directories are free to choose, where you can use / opt / software this is my own set up.
Unzip the folder and copy jdk
First extract
tar -zxvf jdk-12.0.1_linux-x64_bin.tar.gz
In the copy to the installation directory, here I am usr following the establishment of a directory of java, we jdk folder copy past
mkdir /usr/java
mv jdk-12.0.1 /usr/java/
Modify the configuration file
We should let the operating system know java installation directory.
vi / etc / profile
#java
export JAVA_HOME=/usr/java/jdk-12.0.1
export PATH=$JAVA_HOME/bin:$PATH
export CLASSPATH=.:$JAVA_HOME/jre/lib/ext:/$JAVA_HOME/lib/tools.jar
Test to see if the installation was successful
java -version
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