nexus-setup.sh

#!/bin/bash

sudo rpm --import https://yum.corretto.aws/corretto.key
sudo curl -L -o /etc/yum.repos.d/corretto.repo https://yum.corretto.aws/corretto.repo

sudo yum install -y java-17-amazon-corretto-devel 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
sleep 10
EXTOUT=`tar xzvf nexus.tar.gz`
NEXUSDIR=`echo $EXTOUT | cut -d '/' -f1`
sleep 5
rm -rf /tmp/nexus/nexus.tar.gz
cp -r /tmp/nexus/* /opt/nexus/
sleep 5
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