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wiki: add firewalld mail ports reset article + session updates

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- New article: firewalld mail ports wiped after reload (IMAP + webmail outage)
- New article: Plex 4K codec compatibility (Apple TV)
- New article: mdadm RAID recovery after USB hub disconnect
- Updated yt-dlp article
- Updated all index files: SUMMARY.md, index.md, README.md, category indexes
- Article count: 41 → 42

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
This commit is contained in:
majorlinux
2026-03-15 16:15:02 -04:00
parent 0bcc2c822a
commit 279c094afc
10 changed files with 372 additions and 22 deletions
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17
index.md
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@@ -2,8 +2,8 @@
> A growing reference of Linux, self-hosting, open source, streaming, and troubleshooting guides. Written by MajorLinux. Used by MajorTwin.
>
> **Last updated:** 2026-03-14
> **Article count:** 39
> **Last updated:** 2026-03-15
> **Article count:** 42
## Domains
@@ -12,8 +12,8 @@
| 🐧 Linux & Sysadmin | `01-linux/` | 9 |
| 🏠 Self-Hosting & Homelab | `02-selfhosting/` | 8 |
| 🔓 Open Source Tools | `03-opensource/` | 9 |
| 🎙️ Streaming & Podcasting | `04-streaming/` | 1 |
| 🔧 General Troubleshooting | `05-troubleshooting/` | 12 |
| 🎙️ Streaming & Podcasting | `04-streaming/` | 2 |
| 🔧 General Troubleshooting | `05-troubleshooting/` | 14 |
---
@@ -96,12 +96,16 @@
### 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
### Plex
- [Plex 4K Codec Compatibility (Apple TV)](04-streaming/plex/plex-4k-codec-compatibility.md) — AV1/VP9 vs HEVC, batch conversion script, yt-dlp auto-convert hook
---
## 🔧 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
- [Mail Client Stops Receiving: Fail2ban IMAP Self-Ban](05-troubleshooting/networking/fail2ban-imap-self-ban-mail-client.md) — diagnosing why one device stops receiving email when the mail server is healthy
- [firewalld: Mail Ports Wiped After Reload](05-troubleshooting/networking/firewalld-mail-ports-reset.md) — recovering IMAP and webmail after firewalld reload drops all mail service rules
- [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
@@ -111,6 +115,7 @@
- [MajorWiki Setup & Pipeline](05-troubleshooting/majwiki-setup-and-pipeline.md) — setting up MajorWiki and the Obsidian → Gitea → MkDocs publishing pipeline
- [Gitea Actions Runner: Boot Race Condition Fix](05-troubleshooting/gitea-runner-boot-race-network-target.md) — fixing act_runner crash loop on boot caused by DNS not ready at startup
- [SELinux: Fixing Dovecot Mail Spool Context (/var/vmail)](05-troubleshooting/selinux-dovecot-vmail-context.md) — fixing thousands of AVC denials when /var/vmail has wrong SELinux context
- [mdadm RAID Recovery After USB Hub Disconnect](05-troubleshooting/storage/mdadm-usb-hub-disconnect-recovery.md) — diagnosing and recovering a failed mdadm array caused by a USB hub dropout
---
@@ -118,6 +123,10 @@
| Date | Article | Domain |
|---|---|---|
| 2026-03-15 | [firewalld: Mail Ports Wiped After Reload](05-troubleshooting/networking/firewalld-mail-ports-reset.md) | Troubleshooting |
| 2026-03-15 | [Plex 4K Codec Compatibility (Apple TV)](04-streaming/plex/plex-4k-codec-compatibility.md) | Streaming |
| 2026-03-15 | [mdadm RAID Recovery After USB Hub Disconnect](05-troubleshooting/storage/mdadm-usb-hub-disconnect-recovery.md) | Troubleshooting |
| 2026-03-15 | [yt-dlp: Video Downloading](03-opensource/media-creative/yt-dlp.md) | Open Source |
| 2026-03-14 | [SELinux: Fixing Dovecot Mail Spool Context (/var/vmail)](05-troubleshooting/selinux-dovecot-vmail-context.md) | Troubleshooting |
| 2026-03-14 | [Gitea Actions Runner: Boot Race Condition Fix](05-troubleshooting/gitea-runner-boot-race-network-target.md) | Troubleshooting |
| 2026-03-14 | [Mail Client Stops Receiving: Fail2ban IMAP Self-Ban](05-troubleshooting/networking/fail2ban-imap-self-ban-mail-client.md) | Troubleshooting |