added sh:mvn:install

maven-install.md

@@ -0,0 +1,39 @@
+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`
+3. 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`
+4. 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 for Java 8.
+
+5. 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 for Java 8.
+
+6. Verify your maven version
+    `mvn -v`
+
+### Project Preparation
+7. Create the `.m2` directory in the home directory of your current user
+    `mkdir ~/.m2`
+
+8. Create the Settings file inside of the `~/.m2` directory
+    `cd ~/.m2/`
+    `mv demo/settings.xml ~/.m2/`

nexus-install.sh

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+#!/bin/bash
+yum install java-1.8.0-openjdk.x86_64 wget -y   
+mkdir -p /opt/nexus/   
+mkdir -p /tmp/nexus/                           
+cd /tmp/nexus/
+NEXUSURL="https://download.sonatype.com/nexus/3/latest-unix.tar.gz"
+wget $NEXUSURL -O nexus.tar.gz
+EXTOUT=`tar xzvf nexus.tar.gz`
+NEXUSDIR=`echo $EXTOUT | cut -d '/' -f1`
+rm -rf /tmp/nexus/nexus.tar.gz
+rsync -avzh /tmp/nexus/ /opt/nexus/
+useradd nexus
+chown -R nexus.nexus /opt/nexus 
+cat <<EOT>> /etc/systemd/system/nexus.service
+[Unit]                                                                          
+Description=nexus service                                                       
+After=network.target                                                            
+                                                                  
+[Service]                                                                       
+Type=forking                                                                    
+LimitNOFILE=65536                                                               
+ExecStart=/opt/nexus/$NEXUSDIR/bin/nexus start                                  
+ExecStop=/opt/nexus/$NEXUSDIR/bin/nexus stop                                    
+User=nexus                                                                      
+Restart=on-abort                                                                
+                                                                  
+[Install]                                                                       
+WantedBy=multi-user.target                                                      
+
+EOT
+
+echo 'run_as_user="nexus"' > /opt/nexus/$NEXUSDIR/bin/nexus.rc
+systemctl daemon-reload
+systemctl start nexus
+systemctl enable nexus