# MajorLinux Tech Wiki — Index

> A growing reference of Linux, self-hosting, open source, streaming, and troubleshooting guides. Written by MajorLinux. Used by MajorTwin.
>
> **Last updated:** 2026-03-13
> **Article count:** 31

## Domains

| Domain | Folder | Articles |
|---|---|---|
| 🐧 Linux & Sysadmin | `01-linux/` | 9 |
| 🏠 Self-Hosting & Homelab | `02-selfhosting/` | 8 |
| 🔓 Open Source Tools | `03-opensource/` | 4 |
| 🎙️ Streaming & Podcasting | `04-streaming/` | 1 |
| 🔧 General Troubleshooting | `05-troubleshooting/` | 9 |

---

## 🐧 Linux & Sysadmin

### Files & Permissions
- [Linux File Permissions](01-linux/files-permissions/linux-file-permissions.md) — chmod, chown, special bits, finding permission problems

### Process Management
- [Managing Linux Services with systemd](01-linux/process-management/managing-linux-services-systemd-ansible.md) — systemctl, journalctl, writing service files, Ansible service management

### Networking
- [SSH Config & Key Management](01-linux/networking/ssh-config-key-management.md) — key generation, ssh-copy-id, ~/.ssh/config, managing multiple keys

### Package Management
- [Package Management Reference](01-linux/packages/package-management-reference.md) — apt, dnf, pacman side-by-side reference, Flatpak/Snap

### Shell & Scripting
- [Ansible Getting Started](01-linux/shell-scripting/ansible-getting-started.md) — inventory, ad-hoc commands, playbooks, handlers, roles
- [Bash Scripting Patterns](01-linux/shell-scripting/bash-scripting-patterns.md) — set -euo pipefail, logging, error handling, argument parsing, common patterns

### Storage
- [SnapRAID & MergerFS Storage Setup](01-linux/storage/snapraid-mergerfs-setup.md) — Pooling mismatched drives and adding parity on Linux

### Distro-Specific
- [Linux Distro Guide for Beginners](01-linux/distro-specific/linux-distro-guide-beginners.md) — Ubuntu recommendation, distro comparison, desktop environments
- [WSL2 Instance Migration to Fedora 43](01-linux/distro-specific/wsl2-instance-migration-fedora43.md) — moving WSL2 VHDX from C: to another drive

---

## 🏠 Self-Hosting & Homelab

### Docker & Containers
- [Self-Hosting Starter Guide](02-selfhosting/docker/self-hosting-starter-guide.md) — hardware options, Docker install, first services, networking basics
- [Docker vs VMs for the Homelab](02-selfhosting/docker/docker-vs-vms-homelab.md) — when to use containers vs VMs, KVM setup, how to run both
- [Debugging Broken Docker Containers](02-selfhosting/docker/debugging-broken-docker-containers.md) — logs, inspect, exec, port conflicts, permission errors

### Reverse Proxies
- [Setting Up Caddy as a Reverse Proxy](02-selfhosting/reverse-proxy/setting-up-caddy-reverse-proxy.md) — Caddyfile basics, automatic HTTPS, local TLS, DNS challenge

### DNS & Networking
- [Tailscale for Homelab Remote Access](02-selfhosting/dns-networking/tailscale-homelab-remote-access.md) — installation, MagicDNS, making services accessible, subnet router, ACLs

### Storage & Backup
- [rsync Backup Patterns](02-selfhosting/storage-backup/rsync-backup-patterns.md) — flags reference, remote backup, incremental with hard links, cron/systemd

### Monitoring
- [Tuning Netdata Web Log Alerts](02-selfhosting/monitoring/tuning-netdata-web-log-alerts.md) — tuning web_log_1m_redirects threshold for HTTPS-forcing servers

### Security
- [Linux Server Hardening Checklist](02-selfhosting/security/linux-server-hardening-checklist.md) — non-root user, SSH key auth, sshd_config, firewall, fail2ban

---

## 🔓 Open Source Tools

### Productivity
- [rmlint: Duplicate File Scanning](03-opensource/productivity/rmlint-duplicate-scanning.md) — extremely fast duplicate file finding and storage reclamation

### Development Tools
- [tmux: Persistent Terminal Sessions](03-opensource/dev-tools/tmux.md) — detachable sessions for long-running jobs over SSH
- [screen: Simple Persistent Sessions](03-opensource/dev-tools/screen.md) — lightweight terminal multiplexer, universally available
- [rsync: Fast, Resumable File Transfers](03-opensource/dev-tools/rsync.md) — incremental file sync locally and over SSH, survives interruptions

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## 🎙️ Streaming & Podcasting

### OBS Studio
- [OBS Studio Setup & Encoding](04-streaming/obs/obs-studio-setup-encoding.md) — installation, NVENC/x264 settings, scene setup, audio filters, Linux Wayland notes

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## 🔧 General Troubleshooting

- [Apache Outage: Fail2ban Self-Ban + Missing iptables Rules](05-troubleshooting/networking/fail2ban-self-ban-apache-outage.md) — diagnosing and fixing Apache outages caused by missing firewall rules and Fail2ban self-bans
- [Docker & Caddy Recovery After Reboot (Fedora + SELinux)](05-troubleshooting/docker-caddy-selinux-post-reboot-recovery.md) — fixing docker.socket, SELinux port blocks, and httpd_can_network_connect after reboot
- [ISP SNI Filtering with Caddy](05-troubleshooting/isp-sni-filtering-caddy.md) — troubleshooting why wiki.majorshouse.com was blocked by Google Fiber
- [Obsidian Cache Hang Recovery](05-troubleshooting/obsidian-cache-hang-recovery.md) — resolving "Loading cache" hang in Obsidian by cleaning Electron app data and ML artifacts
- [Qwen2.5-14B OOM on RTX 3080 Ti (12GB)](05-troubleshooting/gpu-display/qwen-14b-oom-3080ti.md) — fixes and alternatives when hitting VRAM limits during fine-tuning
- [yt-dlp YouTube JS Challenge Fix on Fedora](05-troubleshooting/yt-dlp-fedora-js-challenge.md) — fixing YouTube JS challenge solver errors and missing formats on Fedora
- [Gemini CLI Manual Update](05-troubleshooting/gemini-cli-manual-update.md) — how to manually update the Gemini CLI when automatic updates fail
- [MajorWiki Setup & Pipeline](05-troubleshooting/majwiki-setup-and-pipeline.md) — setting up MajorWiki and the Obsidian → Gitea → MkDocs publishing pipeline

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## Recently Updated

| Date | Article | Domain |
|---|---|---|
| 2026-03-13 | [tmux: Persistent Terminal Sessions](03-opensource/dev-tools/tmux.md) | Open Source |
| 2026-03-13 | [screen: Simple Persistent Sessions](03-opensource/dev-tools/screen.md) | Open Source |
| 2026-03-13 | [rsync: Fast, Resumable File Transfers](03-opensource/dev-tools/rsync.md) | Open Source |
| 2026-03-13 | [Gemini CLI Manual Update](05-troubleshooting/gemini-cli-manual-update.md) | Troubleshooting |
| 2026-03-13 | [rmlint: Duplicate File Scanning](03-opensource/productivity/rmlint-duplicate-scanning.md) | Open Source |
| 2026-03-13 | [SnapRAID & MergerFS Storage Setup](01-linux/storage/snapraid-mergerfs-setup.md) | Linux |
| 2026-03-13 | [Qwen2.5-14B OOM on RTX 3080 Ti (12GB)](05-troubleshooting/gpu-display/qwen-14b-oom-3080ti.md) | Troubleshooting |
| 2026-03-13 | [Apache Outage: Fail2ban Self-Ban + Missing iptables Rules](05-troubleshooting/networking/fail2ban-self-ban-apache-outage.md) | Troubleshooting |
| 2026-03-12 | [Docker & Caddy Recovery After Reboot](05-troubleshooting/docker-caddy-selinux-post-reboot-recovery.md) | Troubleshooting |

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## Writing Backlog

| Topic | Domain | Priority | From Gap? |
|---|---|---|---|
| KeePassXC self-hosted password management | Open Source | High | No |
| Docker Compose networking deep dive | Self-Hosting | High | No |
| Troubleshooting NVIDIA on Linux | Troubleshooting | Medium | No |
| Pi-hole setup and local DNS | Self-Hosting | Medium | No |
| Nextcloud setup with Docker | Self-Hosting | Medium | No |