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Learn how to deploy Cosmos Cloud on Ubuntu VPS! This article provides a guide to deploy Cosmos Cloud on Ubuntu VPS. What is Cosmos Cloud? Cosmos Cloud is a self-hosted platform-as-a-service (PaaS) that lets you deploy, manage, and monitor applications (especially Docker-based apps) through a clean web UI. Think of it as a lightweight alternative to tools like Portainer or Coolify, but with built-in reverse proxy, SSL, and app marketplace features. ✅ Requirements Ubuntu 22.04 or Ubuntu 24.04 VPS Root or sudo access Minimum: 1 vCPU 1 GB RAM (2 GB recommended) 10 GB disk Domain or subdomain (recommended) How to Deploy Cosmos Cloud on Ubuntu VPS To deploy Cosmos Cloud on Ubuntu VPS, follow the steps provided below: Update System apt update && apt upgrade -y Install essentials: apt install -y curl wget git ufw Install Docker Cosmos Cloud runs entirely on Docker. curl -fsSL https://get.docker.com | bash Enable and start Docker: systemctl enable docker systemctl start docker Verify: docker --version (Optional) Configure Firewall ufw allow OpenSSH ufw allow 80 ufw allow 443 ufw allow 4242 ufw enable Deploy Cosmos Cloud Run the official install command: curl -fsSL https://cosmos-cloud.io/get.sh | sudo -E bash -s This script will: Pull Cosmos Cloud Docker image Configure reverse proxy Start the Cosmos container Expose UI on port 4242 Access Cosmos Dashboard Cosmos Cloud welcome screen Open your browser: http://YOUR_SERVER_IP:4242 You’ll be prompted to: Create admin account Set password Configure initial settings Cosmos Cloud dashboard Set Up Domain + SSL (Recommended) Inside Cosmos UI: Go to Settings → Domains Add your domain (e.g., cosmos.yourdomain.com) Enable: Reverse proxy Automatic SSL (Let’s Encrypt) Point your DNS: A record → YOUR_SERVER_IP Deploy Your First App Cosmos supports Docker Compose apps. Example: Deploy Nginx Go to Apps → Create App Choose Docker Compose Paste: version: "3" services: web: image: nginx:latest ports: - "8080:80" Click Deploy Access: http://YOUR_SERVER_IP:8080 Use Built-in Reverse Proxy Instead of exposing ports manually: Edit your app Enable HTTP routing Assign domain: app.yourdomain.com Enable SSL Now your app is available at: https://app.yourdomain.com Monitoring & Management Cosmos provides: Container logs Resource usage Restart policies One-click updates App marketplace Secure Your Deployment Change default port (optional) Edit Docker config: docker ps docker inspect cosmos Or redeploy with custom port mapping. Enable Fail2Ban (recommended) apt install fail2ban -y Regular updates docker pull ghcr.io/cosmos-cloud/cosmos:latest docker restart cosmos Backup Strategy Backup volumes: docker volume ls Example: docker run --rm -v cosmos_data:/data -v $(pwd):/backup busybox tar czf /backup/cosmos-backup.tar.gz /data ⚡ Advanced Tips Use Cosmos as a full PaaS You can deploy: WordPress Node.js apps Laravel Static sites APIs Multi-app hosting Cosmos handles: Routing SSL Subdomains App isolation Replace traditional stack You can avoid: Manual Nginx configs Certbot setup Separate Docker tools 🧩 Troubleshooting Port already in use lsof -i :4242 Docker not running systemctl restart docker Cannot access UI Check: docker logs cosmos 🎯 Summary Cosmos Cloud turns your Ubuntu VPS into a self-hosted PaaS with: One-command install Built-in reverse proxy + SSL App deployment via Docker Compose Clean UI for management Conclusion You now know how to deploy Cosmos Cloud on Ubuntu VPS.

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