skopeo Installation Guide Installation Guide

skopeo is a free and open-source container image inspection and transport. Skopeo works with container images and registries without requiring a daemon, perfect for CI/CD pipelines and image management

Hardware Requirements:

CPU: 1 core minimum

RAM: 256MB minimum

Storage: 100MB for installation

Network: Registry 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 N/A (default skopeo 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 skopeo
sudo dnf install -y skopeo

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

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

# Verify installation
skopeo --version

bash

# Update package index
sudo apt update

# Install skopeo
sudo apt install -y skopeo

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

# Configure firewall
sudo ufw allow N/A

# Verify installation
skopeo --version

bash

# Install skopeo
sudo pacman -S skopeo

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

# Verify installation
skopeo --version

bash

# Install skopeo
apk add --no-cache skopeo

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

# Verify installation
skopeo --version

bash

# Install skopeo
sudo zypper install -y skopeo

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

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

# Verify installation
skopeo --version

bash

# Using Homebrew
brew install skopeo

# Start service
brew services start skopeo

# Verify installation
skopeo --version

bash

# Using pkg
pkg install skopeo

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

# Start service
service skopeo start

# Verify installation
skopeo --version

bash

# Using Chocolatey
choco install skopeo

# Or using Scoop
scoop install skopeo

# Verify installation
skopeo --version

bash

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

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

# Test configuration
skopeo --version

bash

# Enable service
sudo systemctl enable skopeo

# Start service
sudo systemctl start skopeo

# Stop service
sudo systemctl stop skopeo

# Restart service
sudo systemctl restart skopeo

# Check status
sudo systemctl status skopeo

# View logs
sudo journalctl -u skopeo -f

bash

# Enable service
rc-update add skopeo default

# Start service
rc-service skopeo start

# Stop service
rc-service skopeo stop

# Restart service
rc-service skopeo restart

# Check status
rc-service skopeo status

bash

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

# Start service
service skopeo start

# Stop service
service skopeo stop

# Restart service
service skopeo restart

# Check status
service skopeo status

bash

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

# Check status
brew services list | grep skopeo

powershell

# Start service
net start skopeo

# Stop service
net stop skopeo

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

# Check status
Get-Service skopeo

See the official documentation for advanced configuration options.

nginx

upstream skopeo_backend {
    server 127.0.0.1:N/A;
}

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

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

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

    location / {
        proxy_pass http://skopeo_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 skopeo.example.com
    Redirect permanent / https://skopeo.example.com/
</VirtualHost>

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

haproxy

frontend skopeo_frontend
    bind *:80
    bind *:443 ssl crt /etc/ssl/certs/skopeo.pem
    redirect scheme https if !{ ssl_fc }
    default_backend skopeo_backend

backend skopeo_backend
    balance roundrobin
    server skopeo1 127.0.0.1:N/A check

bash

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

# Configure firewall
sudo firewall-cmd --permanent --add-port=N/A/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 skopeo

# View logs
sudo journalctl -u skopeo -f

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

bash

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

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

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

bash

# Stop service
sudo systemctl stop skopeo

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

# Start service
sudo systemctl start skopeo

1. Service won't start:

bash

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

# Check configuration
skopeo --version

# Check permissions
ls -la /etc/skopeo

2. Connection issues:

bash

# Check if service is listening
sudo ss -tlnp | grep N/A

# Test connectivity
telnet localhost N/A

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

3. Performance issues:

bash

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

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

# Check connections
ss -an | grep N/A

yaml

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

Maintenance

bash

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

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

# Arch Linux
sudo pacman -Syu skopeo

# Alpine Linux
apk update && apk upgrade skopeo

# openSUSE
sudo zypper update skopeo

# FreeBSD
pkg update && pkg upgrade skopeo

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

# Restart after updates
sudo systemctl restart skopeo

Regular Maintenance

bash

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

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

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

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

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

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

Best Practices Guide: https://docs.skopeo.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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