registry Installation Guide Installation Guide

registry is a free and open-source Docker image registry. Docker Registry stores and distributes Docker images, providing a self-hosted alternative to Docker Hub or cloud registries

Hardware Requirements:

CPU: 1 core minimum

RAM: 512MB minimum (2GB+ recommended)

Storage: 10GB+ for images

Network: HTTPS recommended

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 5000 (default registry port)

None

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 registry
sudo dnf install -y docker-registry

# Enable and start service
sudo systemctl enable --now docker-registry

# Configure firewall
sudo firewall-cmd --permanent --add-port=5000/tcp
sudo firewall-cmd --reload

# Verify installation
registry --version

bash

# Update package index
sudo apt update

# Install registry
sudo apt install -y docker-registry

# Enable and start service
sudo systemctl enable --now docker-registry

# Configure firewall
sudo ufw allow 5000

# Verify installation
registry --version

bash

# Install registry
sudo pacman -S docker-registry

# Enable and start service
sudo systemctl enable --now docker-registry

# Verify installation
registry --version

bash

# Install registry
apk add --no-cache docker-registry

# Enable and start service
rc-update add docker-registry default
rc-service docker-registry start

# Verify installation
registry --version

bash

# Install registry
sudo zypper install -y docker-registry

# Enable and start service
sudo systemctl enable --now docker-registry

# Configure firewall
sudo firewall-cmd --permanent --add-port=5000/tcp
sudo firewall-cmd --reload

# Verify installation
registry --version

bash

# Using Homebrew
brew install docker-registry

# Start service
brew services start docker-registry

# Verify installation
registry --version

bash

# Using pkg
pkg install docker-registry

# Enable in rc.conf
echo 'docker-registry_enable="YES"' >> /etc/rc.conf

# Start service
service docker-registry start

# Verify installation
registry --version

bash

# Using Chocolatey
choco install docker-registry

# Or using Scoop
scoop install docker-registry

# Verify installation
registry --version

bash

# Create configuration directory
sudo mkdir -p /etc/docker-registry

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

# Test configuration
registry --version

bash

# Enable service
sudo systemctl enable docker-registry

# Start service
sudo systemctl start docker-registry

# Stop service
sudo systemctl stop docker-registry

# Restart service
sudo systemctl restart docker-registry

# Check status
sudo systemctl status docker-registry

# View logs
sudo journalctl -u docker-registry -f

bash

# Enable service
rc-update add docker-registry default

# Start service
rc-service docker-registry start

# Stop service
rc-service docker-registry stop

# Restart service
rc-service docker-registry restart

# Check status
rc-service docker-registry status

bash

# Enable in /etc/rc.conf
echo 'docker-registry_enable="YES"' >> /etc/rc.conf

# Start service
service docker-registry start

# Stop service
service docker-registry stop

# Restart service
service docker-registry restart

# Check status
service docker-registry status

bash

# Using Homebrew services
brew services start docker-registry
brew services stop docker-registry
brew services restart docker-registry

# Check status
brew services list | grep docker-registry

powershell

# Start service
net start docker-registry

# Stop service
net stop docker-registry

# Using PowerShell
Start-Service docker-registry
Stop-Service docker-registry
Restart-Service docker-registry

# Check status
Get-Service docker-registry

See the official documentation for advanced configuration options.

nginx

upstream docker-registry_backend {
    server 127.0.0.1:5000;
}

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

server {
    listen 443 ssl http2;
    server_name docker-registry.example.com;

    ssl_certificate /etc/ssl/certs/docker-registry.example.com.crt;
    ssl_certificate_key /etc/ssl/private/docker-registry.example.com.key;

    location / {
        proxy_pass http://docker-registry_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 docker-registry.example.com
    Redirect permanent / https://docker-registry.example.com/
</VirtualHost>

<VirtualHost *:443>
    ServerName docker-registry.example.com
    
    SSLEngine on
    SSLCertificateFile /etc/ssl/certs/docker-registry.example.com.crt
    SSLCertificateKeyFile /etc/ssl/private/docker-registry.example.com.key
    
    ProxyRequests Off
    ProxyPreserveHost On
    
    ProxyPass / http://127.0.0.1:5000/
    ProxyPassReverse / http://127.0.0.1:5000/
</VirtualHost>

haproxy

frontend docker-registry_frontend
    bind *:80
    bind *:443 ssl crt /etc/ssl/certs/docker-registry.pem
    redirect scheme https if !{ ssl_fc }
    default_backend docker-registry_backend

backend docker-registry_backend
    balance roundrobin
    server docker-registry1 127.0.0.1:5000 check

bash

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

# Configure firewall
sudo firewall-cmd --permanent --add-port=5000/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 docker-registry

# View logs
sudo journalctl -u docker-registry -f

# Monitor resource usage
top -p $(pgrep docker-registry)

bash

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

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

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

bash

# Stop service
sudo systemctl stop docker-registry

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

# Start service
sudo systemctl start docker-registry

1. Service won't start:

bash

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

# Check configuration
registry --version

# Check permissions
ls -la /etc/docker-registry

2. Connection issues:

bash

# Check if service is listening
sudo ss -tlnp | grep 5000

# Test connectivity
telnet localhost 5000

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

3. Performance issues:

bash

# Check resource usage
top -p $(pgrep docker-registry)

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

# Check connections
ss -an | grep 5000

yaml

version: '3.8'
services:
  docker-registry:
    image: docker-registry:latest
    ports:
      - "5000:5000"
    volumes:
      - ./config:/etc/docker-registry
      - ./data:/var/lib/docker-registry
    restart: unless-stopped

Maintenance

bash

# RHEL/CentOS/Rocky/AlmaLinux
sudo dnf update docker-registry

# Debian/Ubuntu
sudo apt update && sudo apt upgrade docker-registry

# Arch Linux
sudo pacman -Syu docker-registry

# Alpine Linux
apk update && apk upgrade docker-registry

# openSUSE
sudo zypper update docker-registry

# FreeBSD
pkg update && pkg upgrade docker-registry

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

# Restart after updates
sudo systemctl restart docker-registry

Regular Maintenance

bash

# Log rotation
sudo logrotate -f /etc/logrotate.d/docker-registry

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

# Check disk usage
du -sh /var/lib/docker-registry

Official Documentation: https://docs.docker-registry.org/

GitHub Repository: https://github.com/docker-registry/docker-registry

Community Forum: https://forum.docker-registry.org/

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

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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

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