A practical guide to diagnosing and fixing Docker container networking problems — DNS timeouts, port conflicts, bridge network isolation, cross-host communication, and the netshoot toolkit for homelab deployments.
A practical guide to Linux disk I/O performance tuning for homelab servers — IO scheduler selection for NVMe, SSD, and HDD, mount option optimization, real-time monitoring with iostat and ioping, and container IO throttling with cgroup v2.
Set up centralized NFS shared storage for your Proxmox homelab with Docker volume mounts, LXC bind mounts, and performance tuning — practical configs for backup storage, media libraries, and container data.
Set up Caddy as a Docker reverse proxy for your homelab — automatic Let’s Encrypt HTTPS with zero config, reusable Caddyfile snippets, zero-downtime reloads, Cloudflare DNS-01 wildcards, HTTP/3 support, and production security hardening.
Master Docker Compose environment variables — understand .env file scoping, variable substitution syntax with defaults and errors, env_file vs environment blocks, and when to use Docker secrets over env vars for sensitive data in homelab deployments.
Deploy a production-grade K3s Kubernetes cluster in your homelab on Proxmox VMs — multi-node setup, Longhorn persistent storage, MetalLB load balancing, Traefik ingress, and migrating existing Docker Compose workloads.
Set up GPU acceleration in Docker containers with the NVIDIA Container Toolkit — from installation to real workloads like Ollama AI inference, Jellyfin hardware transcoding, and Frigate object detection.
Run your own internal Certificate Authority with step-ca in Docker, issue TLS certificates via ACME, integrate with Traefik for automatic renewal, and distribute the root CA to all your devices — no more self-signed certificate warnings.
Docker marks unhealthy containers but does not restart them. Build a self-healing homelab with docker-autoheal, systemd watchdog services, custom health scripts, and Uptime Kuma webhooks — no Kubernetes needed.
The nginx-poolslip zero-day RCE affects NGINX 1.31.0 with ASLR bypass. This guide covers version detection, risk assessment, practical mitigations for homelab setups, and a patch readiness plan.