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1) Update and Upgrade OS |
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The current version of java-8 may vary. Please adapt the following settings to the current version |
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Although it has not been tested with this solution, but you can probably use OpenJDK-8. If that is your choice, you can install Java with this command: "sudo apt install openjdk-8-jdk". You can check this page for more instructions: https://linuxize.com/post/install-java-on-ubuntu-18-04/ |
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sudo apt update sudo apt upgrade sudo reboot -p -f |
download Oracle JDK (Example filename jdk-8u241-linux-x64.tar.gz) and upload the file /opt/Download
2) Creating workspace
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sudo mkdir /usr/lib/jvm |
3) Extracting JDK
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cd /usr/lib/jvm
sudo tar xzf /opt/Download/jdk-8u241-linux-x64.tar.gz
sudo ln -s jdk1.8.0_241 current
sudo chown -R root:root jdk1.8.0_241 |
3) Setting up environment variables
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sudo vi /etc/environment |
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PATH="/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/lib/jvm/jdk1.8.0_241current/bin:/usr/lib/jvm/jdk1.8.0_241current/db/bin:/usr/lib/jvm/jdk1.8.0_241current/jre/bin" J2SDKDIR="/usr/lib/jvm/jdk1.8.0_241current" J2REDIR="/usr/lib/jvm/jdk1.8.0_241current/jre" JAVA_HOME="/usr/lib/jvm/jdk1.8.0_241current" |
5) Configuring the Java location
Enter the following commands to inform the system of the Java location.
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sudo update-alternatives --install "/usr/bin/java" "java" "/usr/lib/jvm/jdk1.8.0_241current/bin/java" 0 sudo update-alternatives --install "/usr/bin/javac" "javac" "/usr/lib/jvm/jdk1.8.0_241current/bin/javac" 0 sudo update-alternatives --set java /usr/lib/jvm/jdk1.8.0_241current/bin/java sudo update-alternatives --set javac /usr/lib/jvm/jdk1.8.0_241current/bin/javac |
6) To check the setup,
enter the following commands and make sure they indicate the location of java and javac as shown in the previous step.
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update-alternatives --list java update-alternatives --list javac |
7) Validate
Restart
Test the installation
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java -version # Sample answer java version "1.8.0_241" Java(TM) SE -versionRuntime Environment (build 1.8.0_241-b07) Java HotSpot(TM) 64-Bit Server VM (build 25.241-b07, mixed mode) sudo reboot -f |
2- Installing Maven
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1) Updating the OS |
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2) Download Maven |
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3) Unzip Maven |
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4) Configuring the Maven environmentTo make sure that Maven works properly, you need to set a few environment variables, including JAVA_HOME, M3_HOME, MAVEN_HOME, and PATH. |
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5) Configuring environment variables |
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5) Check the installation
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1) Download Solr and unzipping |
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2) Create solr user |
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3) Installing the program |
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4) Installing solr as a service |
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5) Validate the solr service |
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