MajorLinux
326c87421f
Captures the majorlab incident where the backup watchdog emailed a missing heartbeat after a kernel-update reboot wiped /var/run, even though the backup had actually completed cleanly. Documents the tmpfs root cause and the fix of storing heartbeats under /var/lib instead. Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
2.4 KiB
2.4 KiB
created, updated
| created | updated |
|---|---|
| 2026-03-15T06:37 | 2026-04-13T10:10 |
🔧 General Troubleshooting
Practical fixes for common Linux, networking, and application problems.
🖥️ GPU & AI
🌐 Networking & Web
- Apache Outage: Fail2ban Self-Ban + Missing iptables Rules
- Mail Client Stops Receiving: Fail2ban IMAP Self-Ban
- firewalld: Mail Ports Wiped After Reload
- Tailscale SSH: Unexpected Re-Authentication Prompt
- Windows OpenSSH: WSL Default Shell Breaks Remote Commands
- ISP SNI Filtering & Caddy
- yt-dlp YouTube JS Challenge Fix
- wget/curl: URLs with Special Characters Fail in Bash
⚙️ Ansible & Fleet Management
- SSH Timeout During dnf upgrade on Fedora Hosts
- Vault Password File Missing
- ansible.cfg Ignored on WSL2 Windows Mounts
📦 Docker & Systems
- Docker & Caddy Recovery After Reboot (Fedora + SELinux)
- Gitea Actions Runner: Boot Race Condition Fix
- Systemd Session Scope Fails at Login (
session-cN.scope) - MajorWiki Setup & Publishing Pipeline
- Cron Heartbeat False Alarm: /var/run Cleared by Reboot