wiki: full index refresh — 106 articles, 17 new since Apr 18
Updated article count (89 → 106), domain counts, per-section listings, and Recently Updated table. Added all articles published since 2026-04-18 including Pi-hole, Mastodon, fail2ban digest, LoRA GGUF, Tailscale iOS, and more. Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
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---
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created: 2026-04-06T09:52
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updated: 2026-04-30T05:21
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updated: 2026-05-02T16:45
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---
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# MajorLinux Tech Wiki — Index
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> A growing reference of Linux, self-hosting, open source, streaming, and troubleshooting guides. Written by MajorLinux. Used by MajorTwin.
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>
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> **Last updated:** 2026-04-18
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> **Article count:** 89
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> **Last updated:** 2026-05-02
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> **Article count:** 106
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## Domains
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| Domain | Folder | Articles |
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|---|---|---|
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| 🐧 Linux & Sysadmin | `01-linux/` | 12 |
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| 🏠 Self-Hosting & Homelab | `02-selfhosting/` | 32 |
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| 🏠 Self-Hosting & Homelab | `02-selfhosting/` | 39 |
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| 🔓 Open Source Tools | `03-opensource/` | 10 |
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| 🎙️ Streaming & Podcasting | `04-streaming/` | 2 |
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| 🔧 General Troubleshooting | `05-troubleshooting/` | 34 |
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| 🔧 General Troubleshooting | `05-troubleshooting/` | 43 |
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---
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## 🐧 Linux & Sysadmin
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### Files & Permissions
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- [Linux File Permissions](01-linux/files-permissions/linux-file-permissions.md) — chmod, chown, special bits, finding permission problems
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### Distro-Specific
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- [Linux Distro Guide for Beginners](01-linux/distro-specific/linux-distro-guide-beginners.md)
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- [WSL2 Backup via PowerShell Scheduled Task](01-linux/distro-specific/wsl2-backup-powershell.md)
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- [WSL2 Instance Migration (Fedora 43)](01-linux/distro-specific/wsl2-instance-migration-fedora43.md)
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- [Wsl2 Rebuild Fedora43 Training Env](01-linux/distro-specific/wsl2-rebuild-fedora43-training-env.md)
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### Process Management
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- [Managing Linux Services with systemd](01-linux/process-management/managing-linux-services-systemd-ansible.md) — systemctl, journalctl, writing service files, Ansible service management
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### Files & Permissions
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- [Linux File Permissions and Ownership](01-linux/files-permissions/linux-file-permissions.md)
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### Networking
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- [SSH Config & Key Management](01-linux/networking/ssh-config-key-management.md) — key generation, ssh-copy-id, ~/.ssh/config, managing multiple keys, Windows OpenSSH admin key auth
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- [SSH Config and Key Management](01-linux/networking/ssh-config-key-management.md)
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### Package Management
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- [Package Management Reference](01-linux/packages/package-management-reference.md) — apt, dnf, pacman side-by-side reference, Flatpak/Snap
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- [Linux Package Management Reference: apt, dnf, pacman](01-linux/packages/package-management-reference.md)
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### Process Management
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- [Managing Linux Services: systemd and Ansible](01-linux/process-management/managing-linux-services-systemd-ansible.md)
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### Shell & Scripting
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- [Ansible Getting Started](01-linux/shell-scripting/ansible-getting-started.md) — inventory, ad-hoc commands, playbooks, handlers, roles
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- [Bash Scripting Patterns](01-linux/shell-scripting/bash-scripting-patterns.md) — set -euo pipefail, logging, error handling, argument parsing, common patterns
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- [Ansible Getting Started: Inventory, Playbooks, and Ad-Hoc Commands](01-linux/shell-scripting/ansible-getting-started.md)
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- [Bash Scripting Patterns for Sysadmins](01-linux/shell-scripting/bash-scripting-patterns.md)
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### Storage
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- [SnapRAID & MergerFS Storage Setup](01-linux/storage/snapraid-mergerfs-setup.md) — Pooling mismatched drives and adding parity on Linux
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- [mdadm — Rebuilding a RAID Array After Reinstall](01-linux/storage/mdadm-raid-rebuild.md) — reassembling and recovering mdadm arrays after OS reinstall
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- [SnapRAID & MergerFS Storage Setup](01-linux/storage/snapraid-mergerfs-setup.md)
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- [mdadm — Rebuilding a RAID Array After Reinstall](01-linux/storage/mdadm-raid-rebuild.md)
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### Distro-Specific
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- [Linux Distro Guide for Beginners](01-linux/distro-specific/linux-distro-guide-beginners.md) — Ubuntu recommendation, distro comparison, desktop environments
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- [WSL2 Instance Migration to Fedora 43](01-linux/distro-specific/wsl2-instance-migration-fedora43.md) — moving WSL2 VHDX from C: to another drive
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- [WSL2 Training Environment Rebuild (Fedora 43)](01-linux/distro-specific/wsl2-rebuild-fedora43-training-env.md) — rebuilding the MajorTwin training env in WSL2 from scratch
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- [WSL2 Backup via PowerShell Scheduled Task](01-linux/distro-specific/wsl2-backup-powershell.md) — automating WSL2 exports on a schedule using PowerShell
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---
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## 🏠 Self-Hosting & Homelab
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### Docker & Containers
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- [Self-Hosting Starter Guide](02-selfhosting/docker/self-hosting-starter-guide.md) — hardware options, Docker install, first services, networking basics
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- [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
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- [Debugging Broken Docker Containers](02-selfhosting/docker/debugging-broken-docker-containers.md) — logs, inspect, exec, port conflicts, permission errors
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- [Docker Healthchecks](02-selfhosting/docker/docker-healthchecks.md) — writing and debugging HEALTHCHECK instructions in Docker containers
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- [Watchtower SMTP via Localhost Postfix Relay](02-selfhosting/docker/watchtower-smtp-localhost-relay.md) — credential-free container update notifications by routing through a local Postfix relay
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### Reverse Proxies
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- [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
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### Cloud
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- [AWS S3 Cost Management](02-selfhosting/cloud/aws-s3-cost-management.md)
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### DNS & Networking
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- [Tailscale for Homelab Remote Access](02-selfhosting/dns-networking/tailscale-homelab-remote-access.md) — installation, MagicDNS, making services accessible, subnet router, ACLs
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- [Network Overview](02-selfhosting/dns-networking/network-overview.md) — MajorsHouse network topology, Tailscale IPs, and connectivity map
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- [Wake-on-LAN via Router SSH](02-selfhosting/dns-networking/wake-on-lan-router-ssh.md) — send WOL magic packets through an Asus router over SSH, with Ansible vault integration
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- [Network Overview](02-selfhosting/dns-networking/network-overview.md)
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- [Pi-hole DoH / DoT Bypass Defense](02-selfhosting/dns-networking/pihole-doh-dot-bypass-defense.md)
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- [Pi-hole v6 Adlist Management via SQL](02-selfhosting/dns-networking/pihole-v6-adlist-management.md)
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- [Pi-hole v6 Group Management: Per-Client DNS Rules](02-selfhosting/dns-networking/pihole-v6-group-management.md)
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- [Tailscale for Homelab Remote Access](02-selfhosting/dns-networking/tailscale-homelab-remote-access.md)
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- [Wake-on-LAN via Router SSH](02-selfhosting/dns-networking/wake-on-lan-router-ssh.md)
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### Cloud
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- [AWS S3 Cost Management](02-selfhosting/cloud/aws-s3-cost-management.md) — identify and control S3 costs: lifecycle rules, storage class selection, bucket inventory, unexpected-growth investigation
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### Storage & Backup
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- [rsync Backup Patterns](02-selfhosting/storage-backup/rsync-backup-patterns.md) — flags reference, remote backup, incremental with hard links, cron/systemd
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### Docker & Containers
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- [Debugging Broken Docker Containers](02-selfhosting/docker/debugging-broken-docker-containers.md)
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- [Docker Healthchecks](02-selfhosting/docker/docker-healthchecks.md)
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- [Docker vs VMs in the Homelab: Why Not Both?](02-selfhosting/docker/docker-vs-vms-homelab.md)
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- [Self-Hosting Starter Guide](02-selfhosting/docker/self-hosting-starter-guide.md)
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- [Watchtower SMTP via Localhost Postfix Relay](02-selfhosting/docker/watchtower-smtp-localhost-relay.md)
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### Monitoring
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- [Tuning Netdata Web Log Alerts](02-selfhosting/monitoring/tuning-netdata-web-log-alerts.md) — tuning web_log_1m_redirects threshold for HTTPS-forcing servers
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- [Tuning Netdata Docker Health Alarms](02-selfhosting/monitoring/netdata-docker-health-alarm-tuning.md) — preventing false alerts during nightly Nextcloud AIO container update cycles
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- [Deploying Netdata to a New Server](02-selfhosting/monitoring/netdata-new-server-setup.md) — install, email notifications, and Netdata Cloud claim for Ubuntu/Debian servers
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- [Netdata + n8n Enriched Alert Emails](02-selfhosting/monitoring/netdata-n8n-enriched-alerts.md) — rich HTML alert emails with remediation steps and wiki links via n8n
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- [Netdata SELinux AVC Denial Monitoring](02-selfhosting/monitoring/netdata-selinux-avc-chart.md) — custom Netdata chart for tracking SELinux AVC denials
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- [Deploying Netdata to a New Server](02-selfhosting/monitoring/netdata-new-server-setup.md)
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- [Netdata SELinux AVC Denial Monitoring](02-selfhosting/monitoring/netdata-selinux-avc-chart.md)
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- [Netdata n8n Enriched Alert Emails](02-selfhosting/monitoring/netdata-n8n-enriched-alerts.md)
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- [Tuning Netdata Docker Health Alarms to Prevent Update Flapping](02-selfhosting/monitoring/netdata-docker-health-alarm-tuning.md)
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- [Tuning Netdata Web Log Alerts](02-selfhosting/monitoring/tuning-netdata-web-log-alerts.md)
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### Reverse Proxies
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- [Setting Up a Reverse Proxy with Caddy](02-selfhosting/reverse-proxy/setting-up-caddy-reverse-proxy.md)
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### Security
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- [Linux Server Hardening Checklist](02-selfhosting/security/linux-server-hardening-checklist.md) — non-root user, SSH key auth, sshd_config, firewall, fail2ban, SpamAssassin
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- [Standardizing unattended-upgrades with Ansible](02-selfhosting/security/ansible-unattended-upgrades-fleet.md) — fleet-wide automatic security updates across Ubuntu servers
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- [Fail2ban Custom Jail: Apache 404 Scanner Detection](02-selfhosting/security/fail2ban-apache-404-scanner-jail.md) — custom filter and jail for blocking 404 scanners
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- [Fail2ban Custom Jail: Apache PHP Webshell Probe Detection](02-selfhosting/security/fail2ban-apache-php-probe-jail.md) — catching PHP webshell/backdoor probes that return 301 on HTTPS-redirecting servers
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- [Fail2ban Custom Jail: WordPress Login Brute Force](02-selfhosting/security/fail2ban-wordpress-login-jail.md) — access-log-based wp-login.php brute force detection without plugins
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- [SELinux: Fixing Fail2ban grep execmem Denial](02-selfhosting/security/selinux-fail2ban-execmem-fix.md) — resolving execmem AVC denials from Fail2ban's grep on Fedora
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- [UFW Firewall Management](02-selfhosting/security/ufw-firewall-management.md) — managing UFW rules, common patterns, troubleshooting
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- [Firewall Hardening with firewalld on Fedora Fleet](02-selfhosting/security/firewalld-fleet-hardening.md) — audit-and-harden pattern for Fedora fleet hosts using Ansible; flush stale rules, rebuild minimal whitelists
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- [Fail2ban Custom Jail: Nginx Bad Request Detection](02-selfhosting/security/fail2ban-nginx-bad-request-jail.md) — wiring the stock nginx-bad-request filter to a jail to catch malformed-request scanners
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- [Fail2ban Custom Jail: Apache Bad Request Detection](02-selfhosting/security/fail2ban-apache-bad-request-jail.md) — custom filter for Apache 400 Bad Request responses (no stock equivalent exists)
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- [SSH Hardening Fleet-Wide with Ansible](02-selfhosting/security/ssh-hardening-ansible-fleet.md) — drop-in sshd config hardening across mixed Ubuntu/Fedora fleets
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- [ClamAV Fleet Deployment with Ansible](02-selfhosting/security/clamav-fleet-deployment.md) — deploy ClamAV with nice/ionice throttling, freshclam, and quarantine to internet-facing hosts
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- [ClamAV Fleet Deployment with Ansible](02-selfhosting/security/clamav-fleet-deployment.md)
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- [Fail2Ban Digest Mode — Fleet-Wide Quiet Alerts](02-selfhosting/security/fail2ban-digest-mode-fleet.md)
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- [Fail2ban Custom Jail: Apache 404 Scanner Detection](02-selfhosting/security/fail2ban-apache-404-scanner-jail.md)
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- [Fail2ban Custom Jail: Apache Bad Request Detection](02-selfhosting/security/fail2ban-apache-bad-request-jail.md)
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- [Fail2ban Custom Jail: Apache PHP Webshell Probe Detection](02-selfhosting/security/fail2ban-apache-php-probe-jail.md)
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- [Fail2ban Custom Jail: WordPress Login Brute Force](02-selfhosting/security/fail2ban-wordpress-login-jail.md)
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- [Fail2ban: Enable the nginx-bad-request Jail](02-selfhosting/security/fail2ban-nginx-bad-request-jail.md)
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- [Firewall Hardening with firewalld on Fedora Fleet](02-selfhosting/security/firewalld-fleet-hardening.md)
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- [Linux Server Hardening Checklist](02-selfhosting/security/linux-server-hardening-checklist.md)
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- [SELinux: Fixing Fail2ban grep execmem Denial on Fedora](02-selfhosting/security/selinux-fail2ban-execmem-fix.md)
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- [SSH Hardening Fleet-Wide with Ansible](02-selfhosting/security/ssh-hardening-ansible-fleet.md)
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- [Standardizing unattended-upgrades Across Ubuntu Fleet with Ansible](02-selfhosting/security/ansible-unattended-upgrades-fleet.md)
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- [UFW Firewall Management](02-selfhosting/security/ufw-firewall-management.md)
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- [wp-fail2ban Plugin Logpath on Debian/Ubuntu (auth.log, not syslog)](02-selfhosting/security/wp-fail2ban-logpath-debian-ubuntu.md)
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### Services
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- [Updating n8n Running in Docker](02-selfhosting/services/updating-n8n-docker.md) — pinned version updates, password reset, Arcane timing gaps
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- [Mastodon Instance Tuning](02-selfhosting/services/mastodon-instance-tuning.md) — character limit increase, media cache management for self-hosted Mastodon
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- [Ghost Email Configuration with Mailgun](02-selfhosting/services/ghost-smtp-mailgun-setup.md) — configuring Ghost's two independent mail systems (newsletter API + transactional SMTP) with Mailgun
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- [Claude Code Remote Control — Mobile Access to a Persistent Host Session](02-selfhosting/services/claude-code-remote-control.md) — running `claude remote-control` on a host so `claude.ai` and the Claude mobile app can drive the CLI, with vault + MCPs intact
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- [Claude Code Remote Control — Mobile Access to a Persistent Host Session](02-selfhosting/services/claude-code-remote-control.md)
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- [Ghost Email Configuration with Mailgun](02-selfhosting/services/ghost-smtp-mailgun-setup.md)
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- [Mastodon DB Maintenance — Statuses, Accounts, and VACUUM](02-selfhosting/services/mastodon-db-maintenance.md)
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- [Mastodon Federation — Domain Blocks, Silencing, and FediSeer](02-selfhosting/services/mastodon-federation.md)
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- [Mastodon Instance Tuning](02-selfhosting/services/mastodon-instance-tuning.md)
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- [Updating n8n Running in Docker](02-selfhosting/services/updating-n8n-docker.md)
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### Storage & Backup
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- [rsync Backup Patterns](02-selfhosting/storage-backup/rsync-backup-patterns.md)
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---
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## 🔓 Open Source Tools
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### Alternatives
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- [SearXNG: Private Self-Hosted Search](03-opensource/alternatives/searxng.md) — metasearch engine that queries multiple engines without exposing your identity
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- [FreshRSS: Self-Hosted RSS Reader](03-opensource/alternatives/freshrss.md) — algorithm-free feed aggregator with mobile app sync
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- [Gitea: Self-Hosted Git](03-opensource/alternatives/gitea.md) — lightweight GitHub alternative, webhooks, single Docker container
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### Productivity
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- [rmlint: Duplicate File Scanning](03-opensource/productivity/rmlint-duplicate-scanning.md) — extremely fast duplicate file finding and storage reclamation
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- [FreshRSS — Self-Hosted RSS Reader](03-opensource/alternatives/freshrss.md)
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- [Gitea — Self-Hosted Git](03-opensource/alternatives/gitea.md)
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- [SearXNG — Private Self-Hosted Search](03-opensource/alternatives/searxng.md)
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### Development Tools
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- [tmux: Persistent Terminal Sessions](03-opensource/dev-tools/tmux.md) — detachable sessions for long-running jobs over SSH
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- [screen: Simple Persistent Sessions](03-opensource/dev-tools/screen.md) — lightweight terminal multiplexer, universally available
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- [rsync: Fast, Resumable File Transfers](03-opensource/dev-tools/rsync.md) — incremental file sync locally and over SSH, survives interruptions
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- [Ventoy: Multi-Boot USB Tool](03-opensource/dev-tools/ventoy.md) — drop ISOs on a USB drive and boot any of them, no reflashing
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### Privacy & Security
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- [Vaultwarden: Self-Hosted Password Manager](03-opensource/privacy-security/vaultwarden.md) — Bitwarden-compatible server in a single Docker container, passwords stay on your hardware
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- [Ventoy — Multi-Boot USB Tool](03-opensource/dev-tools/ventoy.md)
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- [rsync — Fast, Resumable File Transfers](03-opensource/dev-tools/rsync.md)
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- [screen — Simple Persistent Terminal Sessions](03-opensource/dev-tools/screen.md)
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- [tmux — Persistent Terminal Sessions](03-opensource/dev-tools/tmux.md)
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### Media & Creative
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- [yt-dlp: Video Downloading](03-opensource/media-creative/yt-dlp.md) — download from YouTube and hundreds of other sites, Plex-optimized format selection
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- [yt-dlp — Video Downloading](03-opensource/media-creative/yt-dlp.md)
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### Privacy & Security
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- [Vaultwarden — Self-Hosted Password Manager](03-opensource/privacy-security/vaultwarden.md)
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### Productivity
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- [rmlint — Extreme Duplicate File Scanning](03-opensource/productivity/rmlint-duplicate-scanning.md)
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---
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## 🎙️ Streaming & Podcasting
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### OBS Studio
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- [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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- [OBS Studio Setup and Encoding Settings](04-streaming/obs/obs-studio-setup-encoding.md)
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### Plex
|
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- [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
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- [Plex 4K Codec Compatibility (Apple TV)](04-streaming/plex/plex-4k-codec-compatibility.md)
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---
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## 🔧 General Troubleshooting
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- [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
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- [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
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- [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
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- [Fail2ban & UFW Rule Bloat: 30k Rules Slowing Down a VPS](05-troubleshooting/networking/fail2ban-ufw-rule-bloat-cleanup.md) — diagnosing and cleaning up massive nftables/UFW rule accumulation
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- [Tailscale SSH: Unexpected Re-Authentication Prompt](05-troubleshooting/networking/tailscale-ssh-reauth-prompt.md) — resolving unexpected re-auth prompts on Tailscale SSH connections
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- [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
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- [n8n Behind Reverse Proxy: X-Forwarded-For Trust Fix](05-troubleshooting/docker/n8n-proxy-trust-x-forwarded-for.md) — fixing webhook failures caused by missing proxy trust configuration
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- [Nextcloud AIO Container Unhealthy for 20 Hours](05-troubleshooting/docker/nextcloud-aio-unhealthy-20h-stuck.md) — diagnosing stuck Nextcloud AIO containers after nightly update cycles
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- [ISP SNI Filtering with Caddy](05-troubleshooting/isp-sni-filtering-caddy.md) — troubleshooting why wiki.majorshouse.com was blocked by Google Fiber
|
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- [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
|
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- [macOS Repeating Alert Tone from Mirrored Notification](05-troubleshooting/macos-mirrored-notification-alert-loop.md) — stopping alert tone loops from mirrored iPhone notifications on Mac
|
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- [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
|
||||
- [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
|
||||
- [Cron Heartbeat False Alarm: /var/run Cleared by Reboot](05-troubleshooting/cron-heartbeat-tmpfs-reboot-false-alarm.md) — why `/run` is tmpfs and how a reboot wipes cron heartbeat files, and where to put them instead
|
||||
- [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
|
||||
- [Windows OpenSSH Server (sshd) Stops After Reboot](05-troubleshooting/networking/windows-sshd-stops-after-reboot.md) — fixing sshd not running after reboot due to Manual startup type
|
||||
- [Windows OpenSSH: WSL Default Shell Breaks Remote Commands](05-troubleshooting/networking/windows-openssh-wsl-default-shell-breaks-remote-commands.md) — fixing remote SSH command failures when wsl.exe is the default shell
|
||||
- [Ollama Drops Off Tailscale When Mac Sleeps](05-troubleshooting/ollama-macos-sleep-tailscale-disconnect.md) — keeping Ollama reachable over Tailscale by disabling macOS sleep on AC power
|
||||
- [Ansible: Vault Password File Not Found](05-troubleshooting/ansible-vault-password-file-missing.md) — fixing the missing vault_pass file error when running ansible-playbook
|
||||
- [Ansible: ansible.cfg Ignored on WSL2 Windows Mounts](05-troubleshooting/ansible-wsl2-world-writable-mount-ignores-cfg.md) — fixing silent config ignore due to world-writable /mnt/d/ permissions
|
||||
- [Ansible SSH Timeout During dnf upgrade](05-troubleshooting/ansible-ssh-timeout-dnf-upgrade.md) — preventing SSH timeouts during long-running dnf upgrades on Fedora
|
||||
- [Fedora Networking & Kernel Troubleshooting](05-troubleshooting/fedora-networking-kernel-recovery.md) — nmcli quick fix, GRUB kernel rollback, and recovery for Fedora fleet
|
||||
- [Custom Fail2ban Jail: Apache Directory Scanning](05-troubleshooting/security/apache-dirscan-fail2ban-jail.md) — blocking directory scanners and junk HTTP methods
|
||||
- [ClamAV Safe Scheduling on Live Servers](05-troubleshooting/security/clamscan-cpu-spike-nice-ionice.md) — preventing clamscan CPU spikes with nice and ionice
|
||||
- [Systemd Session Scope Fails at Login](05-troubleshooting/systemd/session-scope-failure-at-login.md) — fixing session-cN.scope failures during login
|
||||
- [wget/curl: URLs with Special Characters Fail in Bash](05-troubleshooting/wget-url-special-characters.md) — fixing broken downloads caused by unquoted URLs with &, ?, # characters
|
||||
- [Ansible: Check Mode False Positives in Verify/Assert Tasks](05-troubleshooting/ansible-check-mode-false-positives.md) — guarding verify/assert tasks with `when: not ansible_check_mode` to prevent false failures in dry runs
|
||||
- [Ansible Fails with Permission Denied While `ssh <alias>` Works (Host Alias Bypass)](05-troubleshooting/ansible-ssh-host-alias-bypass.md) — SSH Host blocks match on literal pattern; `ansible_host: <IP>` bypasses the alias and the IdentityFile never gets applied
|
||||
- [Ghost EmailAnalytics Lag Warning — What It Means and When to Worry](05-troubleshooting/ghost-emailanalytics-lag-warning.md) — explaining the lag counter, `submitted` status, and `fetchMissing end == begin` skip
|
||||
- [claude-mem: --setting-sources Empty Arg Bug (Claude Code 2.1.x)](05-troubleshooting/claude-mem-setting-sources-empty-arg.md) — fixing silent pipeline failure when claude-mem 12.1.x spawns Claude Code 2.1.112+
|
||||
- [Ansible Check Mode False Positives in Verify/Assert Tasks](05-troubleshooting/ansible-check-mode-false-positives.md)
|
||||
- [Ansible Fails with Permission Denied While `ssh <alias>` Works (Host Alias Bypass)](05-troubleshooting/ansible-ssh-host-alias-bypass.md)
|
||||
- [Ansible SSH Timeout During dnf upgrade on Fedora Hosts](05-troubleshooting/ansible-ssh-timeout-dnf-upgrade.md)
|
||||
- [Ansible: Vault Password File Not Found](05-troubleshooting/ansible-vault-password-file-missing.md)
|
||||
- [Ansible Ignores ansible.cfg on WSL2 Windows Mounts](05-troubleshooting/ansible-wsl2-world-writable-mount-ignores-cfg.md)
|
||||
- [claude-mem Silently Fails with Claude Code 2.1+ (Empty --setting-sources)](05-troubleshooting/claude-mem-setting-sources-empty-arg.md)
|
||||
- [Cron Heartbeat False Alarm: /var/run Cleared by Reboot](05-troubleshooting/cron-heartbeat-tmpfs-reboot-false-alarm.md)
|
||||
- [Docker & Caddy Recovery After Reboot (Fedora + SELinux)](05-troubleshooting/docker-caddy-selinux-post-reboot-recovery.md)
|
||||
- [Fantastical Google Sync Error Flood — Phantom Calendars Fixed via syncselect](05-troubleshooting/fantastical-google-phantom-calendar-syncselect.md)
|
||||
- [Fantastical MCP Server: Permission Denied on Launch (macOS Quarantine)](05-troubleshooting/fantastical-mcp-permission-denied.md)
|
||||
- [Fedora Networking & Kernel Troubleshooting](05-troubleshooting/fedora-networking-kernel-recovery.md)
|
||||
- [Gemini CLI: Manual Update Guide](05-troubleshooting/gemini-cli-manual-update.md)
|
||||
- [Ghost EmailAnalytics Lag Warning — What It Means and When to Worry](05-troubleshooting/ghost-emailanalytics-lag-warning.md)
|
||||
- [Gitea Actions Runner: Boot Race Condition Fix](05-troubleshooting/gitea-runner-boot-race-network-target.md)
|
||||
- [ISP SNI Filtering & Caddy Troubleshooting](05-troubleshooting/isp-sni-filtering-caddy.md)
|
||||
- [macOS Repeating Alert Tone from Mirrored iPhone Notification](05-troubleshooting/macos-mirrored-notification-alert-loop.md)
|
||||
- [MajorWiki Setup & Publishing Pipeline](05-troubleshooting/majwiki-setup-and-pipeline.md)
|
||||
- [Obsidian Vault Recovery — Loading Cache Hang](05-troubleshooting/obsidian-cache-hang-recovery.md)
|
||||
- [Ollama: `ollama run` with Piped Stdin Bypasses Chat Template + SYSTEM Prompt](05-troubleshooting/ollama-chat-template-pipe-stdin-bypass.md)
|
||||
- [Ollama Drops Off Tailscale When Mac Sleeps](05-troubleshooting/ollama-macos-sleep-tailscale-disconnect.md)
|
||||
- [Python smtplib: Missing Date/Message-ID Headers Break Mail Clients](05-troubleshooting/python-smtplib-missing-rfc-headers.md)
|
||||
- [SELinux: Fixing Dovecot Mail Spool Context (/var/vmail)](05-troubleshooting/selinux-dovecot-vmail-context.md)
|
||||
- [Ubuntu dist-upgrade Quarantines Third-Party Repos](05-troubleshooting/ubuntu-dist-upgrade-repo-quarantine.md)
|
||||
- [wget/curl: URLs with Special Characters Fail in Bash](05-troubleshooting/wget-url-special-characters.md)
|
||||
- [yt-dlp YouTube JS Challenge Fix (Fedora)](05-troubleshooting/yt-dlp-fedora-js-challenge.md)
|
||||
### Docker & Containers
|
||||
- [Nextcloud AIO Container Unhealthy for 20 Hours After Nightly Update](05-troubleshooting/docker/nextcloud-aio-unhealthy-20h-stuck.md)
|
||||
- [n8n Behind Reverse Proxy: X-Forwarded-For Trust Fix](05-troubleshooting/docker/n8n-proxy-trust-x-forwarded-for.md)
|
||||
|
||||
### GPU & Display
|
||||
- [LoRA adapter — GGUF conversion fails with 'config.json not found](05-troubleshooting/gpu-display/lora-adapter-gguf-conversion-fails.md)
|
||||
- [Qwen2.5-14B OOM on RTX 3080 Ti (12GB)](05-troubleshooting/gpu-display/qwen-14b-oom-3080ti.md)
|
||||
|
||||
### Networking
|
||||
- [Apache Outage: Fail2ban Self-Ban + Missing iptables Rules](05-troubleshooting/networking/fail2ban-self-ban-apache-outage.md)
|
||||
- [Fail2ban & UFW Rule Bloat: 30k Rules Slowing Down a VPS](05-troubleshooting/networking/fail2ban-ufw-rule-bloat-cleanup.md)
|
||||
- [Mail Client Stops Receiving: Fail2ban IMAP Self-Ban](05-troubleshooting/networking/fail2ban-imap-self-ban-mail-client.md)
|
||||
- [Pi-hole AI Blocklist Blocks Claude Desktop (ERR_CONNECTION_REFUSED)](05-troubleshooting/networking/pihole-blocks-claude-desktop.md)
|
||||
- [Tailscale SSH: Unexpected Re-Authentication Prompt](05-troubleshooting/networking/tailscale-ssh-reauth-prompt.md)
|
||||
- [Windows OpenSSH Server (sshd) Stops After Reboot](05-troubleshooting/networking/windows-sshd-stops-after-reboot.md)
|
||||
- [Windows OpenSSH: WSL as Default Shell Breaks Remote Commands](05-troubleshooting/networking/windows-openssh-wsl-default-shell-breaks-remote-commands.md)
|
||||
- [firewalld: Mail Ports Wiped After Reload (IMAP + Webmail Outage)](05-troubleshooting/networking/firewalld-mail-ports-reset.md)
|
||||
- [iOS Tailscale Clients Report HostName="localhost" — Breaks /etc/hosts Generators](05-troubleshooting/networking/tailscale-status-json-hostname-localhost-ios.md)
|
||||
- [rsync over Tailscale: Hung in TCP Teardown After Transfer Completes](05-troubleshooting/networking/rsync-tailscale-teardown-stall.md)
|
||||
|
||||
### Security
|
||||
- [ClamAV Safe Scheduling on Live Servers](05-troubleshooting/security/clamscan-cpu-spike-nice-ionice.md)
|
||||
- [Custom Fail2ban Jail: Apache Directory Scanning & Junk Methods](05-troubleshooting/security/apache-dirscan-fail2ban-jail.md)
|
||||
|
||||
### Storage
|
||||
- [mdadm RAID Recovery After USB Hub Disconnect](05-troubleshooting/storage/mdadm-usb-hub-disconnect-recovery.md)
|
||||
|
||||
### Systemd
|
||||
- [Systemd Session Scope Fails at Login (session-cN.scope)](05-troubleshooting/systemd/session-scope-failure-at-login.md)
|
||||
|
||||
|
||||
---
|
||||
|
|
@ -182,57 +213,36 @@ updated: 2026-04-30T05:21
|
|||
|
||||
| Date | Article | Domain |
|
||||
|---|---|---|
|
||||
| 2026-04-19 | [Wake-on-LAN via Router SSH](02-selfhosting/dns-networking/wake-on-lan-router-ssh.md) | Self-Hosting |
|
||||
| 2026-04-18 | [Ghost Email Configuration with Mailgun](02-selfhosting/services/ghost-smtp-mailgun-setup.md) | Self-Hosting |
|
||||
| 2026-04-18 | [Firewall Hardening with firewalld on Fedora Fleet](02-selfhosting/security/firewalld-fleet-hardening.md) | Self-Hosting |
|
||||
| 2026-04-18 | [ClamAV Fleet Deployment with Ansible](02-selfhosting/security/clamav-fleet-deployment.md) | Self-Hosting |
|
||||
| 2026-04-18 | [Ansible: Check Mode False Positives in Verify/Assert Tasks](05-troubleshooting/ansible-check-mode-false-positives.md) | Troubleshooting |
|
||||
| 2026-04-18 | [Ghost EmailAnalytics Lag Warning](05-troubleshooting/ghost-emailanalytics-lag-warning.md) | Troubleshooting |
|
||||
| 2026-04-17 | [Watchtower SMTP via Localhost Postfix Relay](02-selfhosting/docker/watchtower-smtp-localhost-relay.md) | Self-Hosting |
|
||||
| 2026-04-17 | [Fail2ban Custom Jail: Nginx Bad Request Detection](02-selfhosting/security/fail2ban-nginx-bad-request-jail.md) | Self-Hosting |
|
||||
| 2026-04-17 | [Fail2ban Custom Jail: Apache Bad Request Detection](02-selfhosting/security/fail2ban-apache-bad-request-jail.md) | Self-Hosting |
|
||||
| 2026-04-17 | [SSH Hardening Fleet-Wide with Ansible](02-selfhosting/security/ssh-hardening-ansible-fleet.md) | Self-Hosting |
|
||||
| 2026-04-17 | [claude-mem: --setting-sources Empty Arg Bug](05-troubleshooting/claude-mem-setting-sources-empty-arg.md) | Troubleshooting |
|
||||
| 2026-04-13 | [Cron Heartbeat False Alarm: /var/run Cleared by Reboot](05-troubleshooting/cron-heartbeat-tmpfs-reboot-false-alarm.md) | Troubleshooting |
|
||||
| 2026-04-09 | [Fail2ban Custom Jail: Apache PHP Webshell Probe Detection](02-selfhosting/security/fail2ban-apache-php-probe-jail.md) | Self-Hosting |
|
||||
| 2026-04-08 | [wget/curl: URLs with Special Characters Fail in Bash](05-troubleshooting/wget-url-special-characters.md) | Troubleshooting |
|
||||
| 2026-04-07 | [SSH Config & Key Management](01-linux/networking/ssh-config-key-management.md) | Linux |
|
||||
| 2026-04-07 | [Windows OpenSSH: WSL Default Shell Breaks Remote Commands](05-troubleshooting/networking/windows-openssh-wsl-default-shell-breaks-remote-commands.md) | Troubleshooting |
|
||||
| 2026-04-07 | [Windows OpenSSH Server (sshd) Stops After Reboot](05-troubleshooting/networking/windows-sshd-stops-after-reboot.md) | Troubleshooting |
|
||||
| 2026-04-03 | [Ansible: ansible.cfg Ignored on WSL2 Windows Mounts](05-troubleshooting/ansible-wsl2-world-writable-mount-ignores-cfg.md) | Troubleshooting |
|
||||
| 2026-04-02 | [Fail2ban Custom Jail: WordPress Login Brute Force](02-selfhosting/security/fail2ban-wordpress-login-jail.md) | Self-Hosting |
|
||||
| 2026-04-02 | [Mastodon Instance Tuning](02-selfhosting/services/mastodon-instance-tuning.md) | Self-Hosting |
|
||||
| 2026-04-02 | [mdadm — Rebuilding a RAID Array After Reinstall](01-linux/storage/mdadm-raid-rebuild.md) | Linux |
|
||||
| 2026-04-02 | [Fedora Networking & Kernel Troubleshooting](05-troubleshooting/fedora-networking-kernel-recovery.md) | Troubleshooting |
|
||||
| 2026-04-02 | [Ventoy: Multi-Boot USB Tool](03-opensource/dev-tools/ventoy.md) | Open Source |
|
||||
| 2026-04-02 | [rsync Backup Patterns](02-selfhosting/storage-backup/rsync-backup-patterns.md) (updated — Glacier Deep Archive) | Self-Hosting |
|
||||
| 2026-04-02 | [yt-dlp: Video Downloading](03-opensource/media-creative/yt-dlp.md) (updated — subtitles, temp fix) | Open Source |
|
||||
| 2026-04-02 | [OBS Studio Setup & Encoding](04-streaming/obs/obs-studio-setup-encoding.md) (updated — captions plugin, VLC capture) | Streaming |
|
||||
| 2026-04-02 | [Linux Server Hardening Checklist](02-selfhosting/security/linux-server-hardening-checklist.md) (updated — SpamAssassin) | Self-Hosting |
|
||||
| 2026-03-23 | [Ansible: Vault Password File Not Found](05-troubleshooting/ansible-vault-password-file-missing.md) | Troubleshooting |
|
||||
| 2026-03-18 | [Deploying Netdata to a New Server](02-selfhosting/monitoring/netdata-new-server-setup.md) | Self-Hosting |
|
||||
| 2026-03-18 | [Tuning Netdata Docker Health Alarms](02-selfhosting/monitoring/netdata-docker-health-alarm-tuning.md) | Self-Hosting |
|
||||
| 2026-03-17 | [Ollama Drops Off Tailscale When Mac Sleeps](05-troubleshooting/ollama-macos-sleep-tailscale-disconnect.md) | Troubleshooting |
|
||||
| 2026-03-17 | [Windows OpenSSH Server (sshd) Stops After Reboot](05-troubleshooting/networking/windows-sshd-stops-after-reboot.md) | Troubleshooting |
|
||||
| 2026-03-16 | [Standardizing unattended-upgrades with Ansible](02-selfhosting/security/ansible-unattended-upgrades-fleet.md) | Self-Hosting |
|
||||
| 2026-03-16 | [WSL2 Training Environment Rebuild (Fedora 43)](01-linux/distro-specific/wsl2-rebuild-fedora43-training-env.md) | Linux |
|
||||
| 2026-03-16 | [WSL2 Backup via PowerShell Scheduled Task](01-linux/distro-specific/wsl2-backup-powershell.md) | Linux |
|
||||
| 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 |
|
||||
| 2026-03-14 | [SearXNG: Private Self-Hosted Search](03-opensource/alternatives/searxng.md) | Open Source |
|
||||
| 2026-03-14 | [FreshRSS: Self-Hosted RSS Reader](03-opensource/alternatives/freshrss.md) | Open Source |
|
||||
| 2026-03-14 | [Gitea: Self-Hosted Git](03-opensource/alternatives/gitea.md) | Open Source |
|
||||
| 2026-03-14 | [yt-dlp: Video Downloading](03-opensource/media-creative/yt-dlp.md) | Open Source |
|
||||
| 2026-03-13 | [Vaultwarden: Self-Hosted Password Manager](03-opensource/privacy-security/vaultwarden.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 |
|
||||
| 2026-05-02 | [WSL2 Backup via PowerShell Scheduled Task](01-linux/distro-specific/wsl2-backup-powershell.md) | Linux |
|
||||
| 2026-05-02 | [SSH Config and Key Management](01-linux/networking/ssh-config-key-management.md) | Linux |
|
||||
| 2026-05-02 | [Wake-on-LAN via Router SSH](02-selfhosting/dns-networking/wake-on-lan-router-ssh.md) | Self-Hosting |
|
||||
| 2026-05-02 | [Tuning Netdata Docker Health Alarms to Prevent Update Flapping](02-selfhosting/monitoring/netdata-docker-health-alarm-tuning.md) | Self-Hosting |
|
||||
| 2026-05-02 | [ClamAV Fleet Deployment with Ansible](02-selfhosting/security/clamav-fleet-deployment.md) | Self-Hosting |
|
||||
| 2026-05-02 | [Fail2Ban Digest Mode — Fleet-Wide Quiet Alerts](02-selfhosting/security/fail2ban-digest-mode-fleet.md) | Self-Hosting |
|
||||
| 2026-05-02 | [Mastodon Instance Tuning](02-selfhosting/services/mastodon-instance-tuning.md) | Self-Hosting |
|
||||
| 2026-05-02 | [Ansible Check Mode False Positives in Verify/Assert Tasks](05-troubleshooting/ansible-check-mode-false-positives.md) | Troubleshooting |
|
||||
| 2026-05-02 | [ISP SNI Filtering & Caddy Troubleshooting](05-troubleshooting/isp-sni-filtering-caddy.md) | Troubleshooting |
|
||||
| 2026-05-02 | [Windows OpenSSH: WSL as Default Shell Breaks Remote Commands](05-troubleshooting/networking/windows-openssh-wsl-default-shell-breaks-remote-commands.md) | Troubleshooting |
|
||||
| 2026-05-02 | [Windows OpenSSH Server (sshd) Stops After Reboot](05-troubleshooting/networking/windows-sshd-stops-after-reboot.md) | Troubleshooting |
|
||||
| 2026-05-02 | [yt-dlp YouTube JS Challenge Fix (Fedora)](05-troubleshooting/yt-dlp-fedora-js-challenge.md) | Troubleshooting |
|
||||
| 2026-04-30 | [wp-fail2ban Plugin Logpath on Debian/Ubuntu (auth.log, not syslog)](02-selfhosting/security/wp-fail2ban-logpath-debian-ubuntu.md) | Self-Hosting |
|
||||
| 2026-04-30 | [LoRA adapter — GGUF conversion fails with 'config.json not found](05-troubleshooting/gpu-display/lora-adapter-gguf-conversion-fails.md) | Troubleshooting |
|
||||
| 2026-04-29 | [iOS Tailscale Clients Report HostName="localhost" — Breaks /etc/hosts Generators](05-troubleshooting/networking/tailscale-status-json-hostname-localhost-ios.md) | Troubleshooting |
|
||||
| 2026-04-29 | [Python smtplib: Missing Date/Message-ID Headers Break Mail Clients](05-troubleshooting/python-smtplib-missing-rfc-headers.md) | Troubleshooting |
|
||||
| 2026-04-28 | [Ubuntu dist-upgrade Quarantines Third-Party Repos](05-troubleshooting/ubuntu-dist-upgrade-repo-quarantine.md) | Troubleshooting |
|
||||
| 2026-04-26 | [Fantastical MCP Server: Permission Denied on Launch (macOS Quarantine)](05-troubleshooting/fantastical-mcp-permission-denied.md) | Troubleshooting |
|
||||
| 2026-04-25 | [rsync over Tailscale: Hung in TCP Teardown After Transfer Completes](05-troubleshooting/networking/rsync-tailscale-teardown-stall.md) | Troubleshooting |
|
||||
| 2026-04-25 | [Ollama: `ollama run` with Piped Stdin Bypasses Chat Template + SYSTEM Prompt](05-troubleshooting/ollama-chat-template-pipe-stdin-bypass.md) | Troubleshooting |
|
||||
| 2026-04-24 | [Fantastical Google Sync Error Flood — Phantom Calendars Fixed via syncselect](05-troubleshooting/fantastical-google-phantom-calendar-syncselect.md) | Troubleshooting |
|
||||
| 2026-04-23 | [Pi-hole DoH / DoT Bypass Defense](02-selfhosting/dns-networking/pihole-doh-dot-bypass-defense.md) | Self-Hosting |
|
||||
| 2026-04-22 | [Pi-hole v6 Adlist Management via SQL](02-selfhosting/dns-networking/pihole-v6-adlist-management.md) | Self-Hosting |
|
||||
| 2026-04-22 | [Pi-hole v6 Group Management: Per-Client DNS Rules](02-selfhosting/dns-networking/pihole-v6-group-management.md) | Self-Hosting |
|
||||
| 2026-04-22 | [Mastodon DB Maintenance — Statuses, Accounts, and VACUUM](02-selfhosting/services/mastodon-db-maintenance.md) | Self-Hosting |
|
||||
| 2026-04-22 | [Mastodon Federation — Domain Blocks, Silencing, and FediSeer](02-selfhosting/services/mastodon-federation.md) | Self-Hosting |
|
||||
| 2026-04-22 | [Pi-hole AI Blocklist Blocks Claude Desktop (ERR_CONNECTION_REFUSED)](05-troubleshooting/networking/pihole-blocks-claude-desktop.md) | Troubleshooting |
|
||||
| 2026-04-21 | [Ansible Fails with Permission Denied While `ssh <alias>` Works (Host Alias Bypass)](05-troubleshooting/ansible-ssh-host-alias-bypass.md) | Troubleshooting |
|
||||
| 2026-04-20 | [Claude Code Remote Control — Mobile Access to a Persistent Host Session](02-selfhosting/services/claude-code-remote-control.md) | Self-Hosting |
|
||||
| 2026-04-19 | [AWS S3 Cost Management](02-selfhosting/cloud/aws-s3-cost-management.md) | Self-Hosting |
|
||||
|
||||
---
|
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|
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|
|
|
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Loading…
Add table
Reference in a new issue