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- Ubuntu 24.04 Apache vs Nginx confusion: fix port binding and proxy loops cleanly (case #94)
- Debian 13: NFS timeouts — the mount options that improve stability (and when they don’t)
- ZFS Compression with zstd: Picking Levels Without Burning CPU
- Ubuntu 24.04: Fail2ban isn’t banning anything — the quick verification workflow
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- Ubuntu 24.04 “Clock skew detected” — fix time sync and stop build/deploy failures (case #46)
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- Docker “Text file busy” During Deploy: The Fix That Stops Flaky Restarts
- Email: HELO/EHLO wrong — fix it before providers throttle you
- Debian 13 “Too many open files”: the correct systemd limit fix (not just ulimit)
- ZFS Kubernetes: PV Design That Won’t Bite During Node Failures
- ZFS fio for VMs: Profiles That Match Reality (Not Marketing)
- ZFS xattr: The Compatibility Choice That Changes Performance
- Docker + Reverse Proxy: 502 Mysteries — Where the Break Really Is (and Fixes)
- WireGuard Windows Won’t Connect: 10 Fixes That Solve Most Cases
- Debian 13 “Start request repeated too quickly”: systemd fixes that actually stick
- Docker Orphan Containers: Why They Appear and How to Purge Safely
- ZFS refquota: The Only Quota That Stops “Used Space Lies”
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- Debian 13: “Unit masked” surprises — unmask safely and fix why it got masked (case #47)
- Email “Sender address rejected”: authentication and policy fixes
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- MariaDB vs Percona Server: Drop-in Replacement or Compatibility Trap?
- WordPress Malware Suspicion: Signs, Verification, and a Cleanup Plan
- ZFS L2ARC on NVMe: When It’s Worth It (and When ARC Is Enough)
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- WireGuard full mesh: when direct office-to-office tunnels are worth it (and when not)
- Ubuntu 24.04 “No route to host”: ARP/gateway/ACL checklist that ends the guessing (case #32)
- WordPress File Permissions Errors: What 755/644 Should Be and Why
- ZFS dnodes and Metadata: Why Metadata Can Be Your Real Bottleneck
- Docker CPU at 100%: Find the Noisy Container and Cap It Properly
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