The Nxeon Blog

Guides for people who run their own servers.

Straight-talking tutorials and comparisons on VPS hosting, game servers, Linux and security. No fluff, just what actually works. 346 guides from the team that runs the servers.

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59 guides for “docker” · Clear search
Tutorials · 6 min read ·

How to Check and Free Up Disk Space on Linux

A full disk breaks databases, deploys and logins. Learn to find what's eating your space with df and du, and safely reclaim it — logs, caches and old kernels.

Tutorials · 5 min read ·

How to Tune Linux Performance for a Busy Server

When traffic climbs, defaults hold you back. Tune file limits, network buffers, sysctl parameters and services to squeeze more out of your VPS.

Security · 5 min read ·

How to Manage Secrets and Environment Variables on a VPS

Hardcoded API keys and passwords in code are a breach waiting to happen. Learn to store secrets in env files, systemd, and vaults — the right way.

Security · 5 min read ·

How to Secure Docker Containers

Containers aren't secure by default. Run as non-root, drop capabilities, limit resources, scan images and lock down the daemon on your VPS.

Security · 5 min read ·

How to Set Up a UFW Firewall on Ubuntu

UFW makes Linux firewalling approachable. Learn to allow only the ports you need, set default-deny, rate-limit SSH, and verify your rules.

Networking · 5 min read ·

How to Point a Subdomain to a Different App or Port

Run several apps on one VPS, each on its own subdomain — api.yourdomain.com, app.yourdomain.com — using a reverse proxy. DNS plus the Nginx and Caddy configs.

Domains · 5 min read ·

How to Set Up a Wildcard Subdomain on a VPS

A wildcard subdomain catches every subdomain at once — ideal for multi-tenant apps and dynamic subdomains. Here's the DNS record, the wildcard SSL cert, and the Nginx config.

Security · 5 min read ·

How to Self-Host Vaultwarden Behind an Nginx Reverse Proxy

Already run Nginx? Here's how to put Vaultwarden behind it properly — real config, Let's Encrypt TLS, WebSocket support and the security headers that matter.

Guides · 5 min read ·

12 Best Self-Hosted Apps to Run on a VPS

A curated tour of the best self-hosted apps for a VPS — what each one replaces, what it needs, and where to start. Your roadmap to a private, self-run stack.

Tutorials · 5 min read ·

How to Self-Host a URL Shortener on a VPS

Branded short links on your own domain, with real analytics and no third-party shutting them down. Install Shlink on a VPS with Docker.

Tutorials · 5 min read ·

How to Self-Host a Status Page for Your Services

Give users a public status page that shows what's up, what's down and why. Build one for free with Uptime Kuma on a VPS.

Security · 5 min read ·

How to Self-Host a Password Manager on a VPS

Which self-hosted password manager should you run, and how? Compare Vaultwarden, KeePass sync and Passbolt, then deploy your pick on a VPS with HTTPS.

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