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topic_hub / sysadmin

The SysAdmin Hub

Servers, networking, monitoring, and keeping infrastructure alive — the operational side of running real systems.

19

Guides

03 Aug

Last updated

3

Editor's picks

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What's Live

The 6 most recent sysadmin posts. Featured ones are flagged.

What You Can Self-Host on Oracle Cloud Free Tier (2026)

What You Can Self-Host on Oracle Cloud Free Tier (2026)

What actually fits on Oracle Cloud free tier after the June 2026 cut: Ghost, Vaultwarden, Syncthing, monitoring, and a small AI model, sized in real RAM.

The Complete Self-Hosted AI Stack for 2026

Artificial intelligence Featured

The Complete Self-Hosted AI Stack for 2026

Building a local AI server is more than installing Ollama. This guide builds a full production AI stack with Open WebUI, LiteLLM, Qdrant, Traefik, and Langfuse — what each component does, why it's needed, and three complete Docker Compose configurations for beginners, power users, and small teams.

Self-Host OpenClaw: VPS Setup to Production (2026)

Self Hosting Featured

Self-Host OpenClaw: VPS Setup to Production (2026)

Self-host OpenClaw from zero to production. Server provisioning, SSH lockdown, Docker, reverse proxy, Fail2ban, performance tuning, and full backup strategy in one guide.

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Everything Else

What You Can Self-Host on Oracle Cloud Free Tier (2026) 03 Aug 2026 · 11 min read FeaturedThe Complete Self-Hosted AI Stack for 2026 31 Jul 2026 · 20 min read FeaturedSelf-Host OpenClaw: VPS Setup to Production (2026) 26 Jul 2026 · 22 min read Self-Hosting Prometheus and Grafana: Infrastructure Monitoring That Actually Works 20 Jul 2026 · 17 min read Zero Trust Everything: The Complete Guide to Self-Hosting Teleport for Secure Infrastructure Access 20 Jul 2026 · 30 min read How to Self-Host Your Own Email Server With Mailcow in 2026 — Complete Setup Guide 29 Apr 2026 · 17 min read The Complete Self-Hosted Productivity Stack: Nextcloud, Vaultwarden, Immich, Jellyfin, and Paperless in 2026 27 Apr 2026 · 17 min read The Complete 2026 Guide to Running Your Own Minecraft Server (And Not Having It Lag) 20 Apr 2026 · 14 min read Bukkit vs Spigot vs Paper: Minecraft Server Guide (2026) 20 Apr 2026 · 17 min read How to Debug Minecraft Server Lag with Spark Profiler (2026 Guide) 02 Mar 2026 · 15 min read Should You Upgrade Your Minecraft Server from Java 21 to Java 26? Here's my Answer 27 Feb 2026 · 20 min read FeaturedThe RAMpocalypse! How AI Companies Are Destroying the Hosting Industry and Your Wallet 21 Feb 2026 · 14 min read What is a Web Server? Apache, Nginx, and How the Internet Delivers Web Pages 29 Sep 2025 · 9 min read What is Cybersecurity? The Field That Keeps the Internet From Collapsing 24 Sep 2025 · 8 min read Why I Switched from WordPress to Ghost for CoderOasis 29 Aug 2025 · 17 min read Simple Guide to Setting Up an NGINX Reserve Proxy 21 Oct 2021 · 4 min read Important NGINX Directories and Files for Referencing 14 Oct 2021 · 3 min read Installing LetsEncrypt's CertBot on Ubuntu 20.04+ 07 Oct 2021 · 3 min read Installing the NGINX Web Server on Debian & Ubuntu 01 Oct 2021 · 4 min read