nexus Installation Guide Installation Guide

nexus is a free and open-source repository manager. Sonatype Nexus manages binaries and build artifacts across your software supply chain

Hardware Requirements:

CPU: 2+ cores

RAM: 4GB minimum (8GB+ recommended)

Storage: 100GB for artifacts

Network: HTTP/HTTPS access

Operating System:

Linux: Any modern distribution (RHEL, Debian, Ubuntu, CentOS, Fedora, Arch, Alpine, openSUSE)

macOS: 10.14+ (Mojave or newer)

Windows: Windows Server 2016+ or Windows 10

FreeBSD: 11.0+

Network Requirements:

Port 8081 (default nexus port)

Docker registry on 5000

Dependencies:

See official documentation for specific requirements

System Access: root or sudo privileges required

This guide supports installation on:

RHEL 8/9 and derivatives (CentOS Stream, Rocky Linux, AlmaLinux)

Debian 11/12

Ubuntu 20.04/22.04/24.04 LTS

Arch Linux (rolling release)

Alpine Linux 3.18+

openSUSE Leap 15.5+ / Tumbleweed

SUSE Linux Enterprise Server (SLES) 15+

macOS 12+ (Monterey and later)

FreeBSD 13+

Windows 10/11/Server 2019+ (where applicable)

bash

# Install EPEL repository if needed
sudo dnf install -y epel-release

# Install nexus
sudo dnf install -y nexus

# Enable and start service
sudo systemctl enable --now nexus

# Configure firewall
sudo firewall-cmd --permanent --add-port=8081/tcp
sudo firewall-cmd --reload

# Verify installation
nexus --version

bash

# Update package index
sudo apt update

# Install nexus
sudo apt install -y nexus

# Enable and start service
sudo systemctl enable --now nexus

# Configure firewall
sudo ufw allow 8081

# Verify installation
nexus --version

bash

# Install nexus
sudo pacman -S nexus

# Enable and start service
sudo systemctl enable --now nexus

# Verify installation
nexus --version

bash

# Install nexus
apk add --no-cache nexus

# Enable and start service
rc-update add nexus default
rc-service nexus start

# Verify installation
nexus --version

bash

# Install nexus
sudo zypper install -y nexus

# Enable and start service
sudo systemctl enable --now nexus

# Configure firewall
sudo firewall-cmd --permanent --add-port=8081/tcp
sudo firewall-cmd --reload

# Verify installation
nexus --version

bash

# Using Homebrew
brew install nexus

# Start service
brew services start nexus

# Verify installation
nexus --version

bash

# Using pkg
pkg install nexus

# Enable in rc.conf
echo 'nexus_enable="YES"' >> /etc/rc.conf

# Start service
service nexus start

# Verify installation
nexus --version

bash

# Using Chocolatey
choco install nexus

# Or using Scoop
scoop install nexus

# Verify installation
nexus --version

bash

# Create configuration directory
sudo mkdir -p /etc/nexus

# Set up basic configuration
# See official documentation for detailed configuration options

# Test configuration
nexus --version

bash

# Enable service
sudo systemctl enable nexus

# Start service
sudo systemctl start nexus

# Stop service
sudo systemctl stop nexus

# Restart service
sudo systemctl restart nexus

# Check status
sudo systemctl status nexus

# View logs
sudo journalctl -u nexus -f

bash

# Enable service
rc-update add nexus default

# Start service
rc-service nexus start

# Stop service
rc-service nexus stop

# Restart service
rc-service nexus restart

# Check status
rc-service nexus status

bash

# Enable in /etc/rc.conf
echo 'nexus_enable="YES"' >> /etc/rc.conf

# Start service
service nexus start

# Stop service
service nexus stop

# Restart service
service nexus restart

# Check status
service nexus status

bash

# Using Homebrew services
brew services start nexus
brew services stop nexus
brew services restart nexus

# Check status
brew services list | grep nexus

powershell

# Start service
net start nexus

# Stop service
net stop nexus

# Using PowerShell
Start-Service nexus
Stop-Service nexus
Restart-Service nexus

# Check status
Get-Service nexus

See the official documentation for advanced configuration options.

nginx

upstream nexus_backend {
    server 127.0.0.1:8081;
}

server {
    listen 80;
    server_name nexus.example.com;
    return 301 https://$server_name$request_uri;
}

server {
    listen 443 ssl http2;
    server_name nexus.example.com;

    ssl_certificate /etc/ssl/certs/nexus.example.com.crt;
    ssl_certificate_key /etc/ssl/private/nexus.example.com.key;

    location / {
        proxy_pass http://nexus_backend;
        proxy_set_header Host $host;
        proxy_set_header X-Real-IP $remote_addr;
        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
        proxy_set_header X-Forwarded-Proto $scheme;
    }
}

apache

<VirtualHost *:80>
    ServerName nexus.example.com
    Redirect permanent / https://nexus.example.com/
</VirtualHost>

<VirtualHost *:443>
    ServerName nexus.example.com
    
    SSLEngine on
    SSLCertificateFile /etc/ssl/certs/nexus.example.com.crt
    SSLCertificateKeyFile /etc/ssl/private/nexus.example.com.key
    
    ProxyRequests Off
    ProxyPreserveHost On
    
    ProxyPass / http://127.0.0.1:8081/
    ProxyPassReverse / http://127.0.0.1:8081/
</VirtualHost>

haproxy

frontend nexus_frontend
    bind *:80
    bind *:443 ssl crt /etc/ssl/certs/nexus.pem
    redirect scheme https if !{ ssl_fc }
    default_backend nexus_backend

backend nexus_backend
    balance roundrobin
    server nexus1 127.0.0.1:8081 check

bash

# Set appropriate permissions
sudo chown -R nexus:nexus /etc/nexus
sudo chmod 750 /etc/nexus

# Configure firewall
sudo firewall-cmd --permanent --add-port=8081/tcp
sudo firewall-cmd --reload

# Enable SELinux policies (if applicable)
sudo setsebool -P httpd_can_network_connect on

See official documentation for database configuration requirements.

bash

# Basic system tuning
echo 'net.core.somaxconn = 65535' | sudo tee -a /etc/sysctl.conf
echo 'net.ipv4.tcp_max_syn_backlog = 65535' | sudo tee -a /etc/sysctl.conf
sudo sysctl -p

bash

# Check service status
sudo systemctl status nexus

# View logs
sudo journalctl -u nexus -f

# Monitor resource usage
top -p $(pgrep nexus)

bash

#!/bin/bash
# Basic backup script
BACKUP_DIR="/backup/nexus"
DATE=$(date +%Y%m%d_%H%M%S)

mkdir -p "$BACKUP_DIR"
tar -czf "$BACKUP_DIR/nexus-backup-$DATE.tar.gz" /etc/nexus /var/lib/nexus

echo "Backup completed: $BACKUP_DIR/nexus-backup-$DATE.tar.gz"

bash

# Stop service
sudo systemctl stop nexus

# Restore from backup
tar -xzf /backup/nexus/nexus-backup-*.tar.gz -C /

# Start service
sudo systemctl start nexus

1. Service won't start:

bash

# Check logs
sudo journalctl -u nexus -n 100
sudo tail -f /var/log/nexus/nexus.log

# Check configuration
nexus --version

# Check permissions
ls -la /etc/nexus

2. Connection issues:

bash

# Check if service is listening
sudo ss -tlnp | grep 8081

# Test connectivity
telnet localhost 8081

# Check firewall
sudo firewall-cmd --list-all

3. Performance issues:

bash

# Check resource usage
top -p $(pgrep nexus)

# Check disk I/O
iotop -p $(pgrep nexus)

# Check connections
ss -an | grep 8081

yaml

version: '3.8'
services:
  nexus:
    image: nexus:latest
    ports:
      - "8081:8081"
    volumes:
      - ./config:/etc/nexus
      - ./data:/var/lib/nexus
    restart: unless-stopped

Maintenance

bash

# RHEL/CentOS/Rocky/AlmaLinux
sudo dnf update nexus

# Debian/Ubuntu
sudo apt update && sudo apt upgrade nexus

# Arch Linux
sudo pacman -Syu nexus

# Alpine Linux
apk update && apk upgrade nexus

# openSUSE
sudo zypper update nexus

# FreeBSD
pkg update && pkg upgrade nexus

# Always backup before updates
tar -czf /backup/nexus-pre-update-$(date +%Y%m%d).tar.gz /etc/nexus

# Restart after updates
sudo systemctl restart nexus

Regular Maintenance

bash

# Log rotation
sudo logrotate -f /etc/logrotate.d/nexus

# Clean old logs
find /var/log/nexus -name "*.log" -mtime +30 -delete

# Check disk usage
du -sh /var/lib/nexus

Official Documentation: https://docs.nexus.org/

GitHub Repository: https://github.com/nexus/nexus

Community Forum: https://forum.nexus.org/

Best Practices Guide: https://docs.nexus.org/best-practices

---

Note: This guide is part of the HowToMgr collection. Always refer to official documentation for the most up-to-date information.

1. Prerequisites

2. Supported Operating Systems

3. Installation

RHEL/CentOS/Rocky Linux/AlmaLinux

Debian/Ubuntu

Arch Linux

Alpine Linux

openSUSE/SLES

macOS

FreeBSD

Windows

Initial Configuration

Basic Configuration

5. Service Management

systemd (RHEL, Debian, Ubuntu, Arch, openSUSE)

OpenRC (Alpine Linux)

rc.d (FreeBSD)

launchd (macOS)

Windows Service Manager

Advanced Configuration

Reverse Proxy Setup

nginx Configuration

Apache Configuration

HAProxy Configuration

Security Configuration

Basic Security Setup

Database Setup

Performance Optimization

System Tuning

Monitoring

Basic Monitoring

9. Backup and Restore

Backup Script

Restore Procedure

6. Troubleshooting

Common Issues

Integration Examples

Docker Compose Example

Maintenance

Update Procedures

Regular Maintenance

Additional Resources

Related Artifact repositories Guides

artifactory Installation Guide