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maven-install.md

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The following are instructions for installing Apache Maven and Java 8 on an Amazon EC2 instance. These are required for the Amazon Neptune Signature Version 4 authentication samples.

Steps To Install Apache Maven and Java 8 on your EC2 instance

  1. Connect to your Amazon EC2 instance with an SSH client.

  2. Install Apache Maven on your EC2 instance. First, enter the following to add a repository with a Maven package.

    sudo wget https://repos.fedorapeople.org/repos/dchen/apache-maven/epel-apache-maven.repo -O /etc/yum.repos.d/epel-apache-maven.repo

  • Enter the following to set the version number for the packages.

    sudo sed -i s/\$releasever/6/g /etc/yum.repos.d/epel-apache-maven.repo

  • Then you can use yum to install Maven.

    sudo yum install -y apache-maven

  1. The Gremlin libraries require Java 8. Enter the following to install Java 8 on your EC2 instance.

    sudo yum install java-1.8.0-devel -y

  2. Install Java11 for SonarQube

    sudo amazon-linux-extras install java-openjdk11

  3. Enter the following to set Java 8 as the default runtime on your EC2 instance.

    sudo /usr/sbin/alternatives --config java
  • When prompted, enter the number 4 for Java 11.

  1. Enter the following to set Java 8 as the default compiler on your EC2 instance.

    sudo /usr/sbin/alternatives --config javac
  • When prompted, enter the number 2 for Javac maven compiler.
  • Make sure to review this config if mvn compile breaks
  1. Verify your maven version 
    mvn -v

Install Git

sudo yum install git -y

Project Preparation

  1. Create the .m2 directory in the home directory of your current user

    mkdir ~/.m2

  2. Create the Settings file inside of the ~/.m2 directory

    cd ~/.m2/
mv demo/settings.xml ~/.m2/