Java installation - Storm Streaming Server
If you wish to install Storm Streaming Server directly on your machine of VPS, a Java Virtual Machine (JVM) is required. This guide describes in details how to download and configure Java on Linux (Debian-based distributions), Windows and Mac OS. Once this part is done, please check our Server installation guide to see how to properly install and configure our server software.
In order to check whether your server comes with a pre-installed Java library, you can use the following command.
For Linux and Mac-OS X based systems (terminal)
java -version
For Windows based systems (terminal)
java -version
In return, you should get something like this:
java version "13.0.1" 2019-10-15
Java(TM) SE Runtime Environment (build 13.0.1+9)
Java HotSpot(TM) 64-Bit Server VM (build 13.0.1+9, mixed mode, sharing)
If java is not present in your system, you will be informed that such command does not exist
-bash: java: command not found
Installation of Java OpenJDK-JRE
- Linux-based systems
For Debian-based Linux distribution (like Ubuntu, Mint)
sudo apt-get update sudo apt-get install java-1.8.0-openjdkFor Fedora, Oracle, Red-Hat
su -c "yum install java-1.8.0-openjdk"Certain versions of Debian, Fedora, etc. are limited to a specific version of Java. It is also possible to download the latest Java JRE on your own from https://jdk.java.net. Once the files are uploaded to your server, extract the package:
tar xvf openjdk-<VERSION>_bin.tar.gz -C /usr/lib/jvm/java-<VERSION>Depending on your Linux distribution these paths might not be present on your system. Command mkdir and chown will allow you to create them.Where <VERSION> is the actual version of the JVM, e.g., “16+36_linux-x64”. You’ll also have to add a reference to this Java version using:
sudo update-alternatives --install "/usr/bin/javac" "javac" "/usr/lib/jvm/java-<VERSION> /bin/javac" 1As in previous note, depending on your Linux distribution these paths might not be present on your system.followed by:
sudo update-alternatives --config javaAt this point, you’ll be asked to select your default java configuration. Your newly installed JRE should appear as the last one on the list. Select the number next to the path to confirm your choice.
$ sudo update-alternatives --config java There are 2 choices for the alternative java (providing /usr/bin/java). Selection Path Priority Status ------------------------------------------------------------ * 0 /usr/lib/jvm/java-6.31-oracle/bin/java 1062 auto mode 1 /usr/lib/jvm/java-6-openjdk/jre/bin/java 1061 manual mode 2 /usr/lib/jvm/java-6.31-oracle/bin/java 1062 manual mode Press enter to keep the current choice[*], or type selection number: - Windows-based systems
Library files can be found on https://jdk.java.net. Once the package is downloaded, please extract it to C:\Program Files\Java\jdk-<VERSION>, where <VERSION> is the actual version of the library.
Now we’ll have to set the proper PATH for you Java. Select Control Panel and then System. Click Advanced and then Environment Variables and add the location of the bin folder of the JDK installation to the PATH variable in System Variables.
The following is a typical value for the PATH variable:
C:\WINDOWS\system32;C:\WINDOWS;"C:\Program Files\Java\jdk-<VERSION>\bin"Now it’s time for JAVA_HOME
In the same window, under System Variables, click New. Enter the variable name as JAVA_HOME. Then enter the variable value as the installation path of the JDK (without the bin sub-folder).
JAVA_HOME C:\Program Files\Java\jdk-<VERSION> Click OK / Click Apply Changes.
- Mac OS X based systems
We suggest installing OpenJDK-JRE via Homebrew software. Before you start, make sure to install https://brew.sh.
Homebrew works in a very similar way to APT-GET known from Debian. First, open a terminal window.
brew update brew install javaYou can also install a specific version of Java
brew install --cask adoptopenjdk15
Installation of Oracle Java JRE
- Linux-based systems
The installation of Oracle Java on Linux-based systems is very similar. Please download the latest JRE from https://www.oracle.com/pl/java/technologies/javase-downloads.html
Once the package is downloaded, please move it to a write-enabled directory. Now we’ll be able to use some commands.
sudo apt install <PATH_TO_FILE>/jdk-<VERSION>_bin.debThe installer will ask several questions and ask you to accept the license. Once the process is finished, we must configure this JRE as the default one:
sudo update-alternatives -install /usr/bin/java java /usr/lib/jvm/<VERSION> 1In case you already have a different version of java, so you can choose the right one with:
sudo update-alternatives --config javaYour newly installed JRE should appear as the last one on the list. Select the number next to the path to confirm your choice.
$ sudo update-alternatives --config java There are 2 choices for the alternative java (providing /usr/bin/java). Selection Path Priority Status ------------------------------------------------------------ * 0 /usr/lib/jvm/java-6.31-oracle/bin/java 1062 auto mode 1 /usr/lib/jvm/java-6-openjdk/jre/bin/java 1061 manual mode 2 /usr/lib/jvm/java-6.31-oracle/bin/java 1062 manual mode Press enter to keep the current choice[*], or type selection number:In order to check if everything is ok, please use the following command:
sudo java -versionIf the output says that command was not found, there is one more command we need to do:
export PATH=$PATH:/usr/lib/jvm/jdk-<VERSION>/bin - Windows-based system
Thanks to the automated installer, this process is very simple. Just grab the latest version from https://www.oracle.com/pl/java/technologies/javase-downloads.html and start the installer.
- Mac OS X
The installation process looks the same as on Windows. Just go to https://www.oracle.com/pl/java/technologies/javase-downloads.html, grab the installer and start the installation process.