Posts
Page 59 of 76
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DNS Troubleshooting from the Command Line
DNS broke again. The command sequence that finds it: verify the resolver, reach a server, dig the record, trace the query path, check reverse lookups.
· Updated:6 min read -
Tailscale Deep Dive: Mesh VPN That Just Works (and Why That's Suspicious)
Go beyond tailscale up with ACL policies, exit nodes, subnet routers, MagicDNS, and Taildrop. Plus: self-host your own control plane with Headscale.
· Updated:11 min read -
Podman Quadlets: Running Containers Without the Docker Daemon (or Your Sanity)
Podman skips the root daemon Docker needs. Quadlets let systemd manage containers natively, with auto-updates and health checks, for self-hosting without Compose.
· Updated:14 min read -
Why Self-Hosted Apps Lose Data After Updates
You updated a container and the database is gone. The bind mount and permission mistakes that lose data, named volumes as the fix, and how to check.
· Updated:5 min read -
nmap for Your Own Network: What You Should Be Scanning
nmap isn't just for pen testers. Learn what's actually worth scanning on your home network and what those open ports really mean.
5 min read -
Vaultwarden Organization Sharing: Password Management for Your Whole Household (or Team)
Stop texting passwords. Set up Vaultwarden organizations to share credentials with family or your team: collections, member roles, the bw CLI, and backups.
· Updated:7 min read -
LLM Fine-Tuning for Mortals: LoRA, QLoRA, and Your Gaming GPU
Fine-tune an LLM on your gaming GPU with LoRA and QLoRA: dataset prep, Hugging Face, Unsloth, VRAM math, a full walkthrough, and mistakes that waste your afternoon.
· Updated:12 min read -
Ollama Beyond the Basics: Model Management, Custom Models, and Optimization
Master Ollama with Modelfiles, GPU tuning, API usage, and performance tricks. Stop running 70B models on 8GB VRAM and wondering why everything is slow.
· Updated:11 min read -
Reverse Proxy SSL: The Cert Chain Mistake Everyone Makes
Your proxy serves the leaf certificate and skips the intermediate, so half your clients fail. How to spot it, build the chain right, and keep renewals working.
· Updated:6 min read -
Nextcloud Advanced: Federation, Backups, and Making It Actually Performant
Nextcloud advanced configuration: Redis caching, federation setup, automated backups, occ command deep dive, LDAP, external storage, and PHP-FPM tuning.
· Updated:9 min read -
Linux Capabilities: Drop Root Without Breaking Everything
Learn Linux capabilities to drop root privileges without breaking your apps. Master cap_drop, cap_add in Docker, and setcap for fine-grained privilege control.
· Updated:8 min read -
Docker Security Hardening: 15 Things You're Doing Wrong Right Now
Stop running Docker containers like it's the Wild West. Learn 15 critical Docker security mistakes and practical fixes to harden your containers today.
· Updated:13 min read
