- Proxmox Clustering and HA: How It Works, What Breaks, and How to Design It Properly
- Hub-and-spoke WireGuard VPN for 3 offices with role-based access
- Tag chips and filter bars: overflow handling, wrap, scroll, selected states
- DMARC Reports: How to Read Them and Catch Spoofing Early
- Email “421 too many connections”: tune concurrency without delaying mail
- Debian 13: nftables rules “don’t work” — load order and conflicts, fixed for good
- ZFS compression lz4: When It’s ‘Free’ and When It Isn’t
- Debian 13: PostgreSQL connection storms — pooler vs tuning: what actually works (case #37)
- Proxmox LXC Won’t Start: Reading cgroups and AppArmor Errors Like a SRE
- DNS Changes Not Visible: Which Caches to Flush (and Which Not to Touch)
- Micro UI Components for Tech Posts: kbd, Badges, Tags, Inline Code, and Copy Buttons
- ZFS NFS: The Tunables That Make It Feel Like Local Disk
- Scroll progress bar for articles: CSS-first, minimal JS that won’t page-fault your UX
- Email: TTL during migration — the simple trick that prevents downtime
- WireGuard Hub-and-Spoke for 3 Offices Through a Central Gateway
- MySQL vs PostgreSQL: “It Suddenly Got Slow”—a 15-Minute Diagnosis Plan for Both
- Proxmox Stuck Tasks: How to Clean Up Hung Jobs and Processes Safely
- Debian 13 Swapfile Pitfalls: Create It Right (Permissions, fstab, Priority)
- Proxmox “Login Failed” When the Web UI Loads: Top Causes and Fixes
- ZFS SLOG power-loss protection: The Feature Your SSD Must Have
- Ubuntu 24.04: UFW locked you out — recover SSH access safely from console
- NTP Across Offices: the Small Thing That Breaks AD, VPN, and Certificates
- MySQL vs PostgreSQL: JSON workloads—fast shortcut or long-term pain
- ZFS SMB: Fixing “Windows Copy Is Slow” for Real
- Docker: Backups You Never Tested — How to Run a Restore Drill Properly
- ZFS ECC vs non-ECC: Risk Math for Real Deployments
- Proxmox “cannot allocate memory”: ballooning, overcommit, and how to tune it
- PostgreSQL vs SQLite on a VPS: the quickest no-regret choice
- SMB Shares Over VPN Without Drops: Fixing “Network Path Not Found” for Real
- ZFS Special VDEV Failure: How to Survive the Nightmare Scenario
- NAT Through VPN: Connect Conflicting Networks Without Breaking Services
- Office VPN failover: keep tunnels up with 2 ISPs (without manual babysitting)
- ESXi Alternatives for SMB: Proxmox vs XCP-ng vs Hyper-V
- Debian 13: APT upgrade gone wrong — roll back one package without a domino collapse
- Email: Inbound Spam Flood — Survive the Attack Without Blocking Real Users
- ZFS zfs diff: Finding Exactly What Changed Between Snapshots
- Proxmox “VM is locked (backup/snapshot)”: how to remove a lock safely
- PostgreSQL vs MongoDB: flexible schema vs predictable ops—who hurts less later
- VPN Full-Mesh for Three Offices: When You Need It and How to Keep It Manageable
- Debian 13: PHP-FPM socket permissions — the tiny fix that kills 502s (case #35)
- VPN certificates: do it properly without permanent self-signed pain
- Debian 13: Fix “Too many redirects” in Nginx by killing the canonical/HTTPS loop
- Proxmox on ZFS: the backup strategy that doesn’t lie (snapshots vs real backups)
- Better Typography for Docs That Engineers Actually Read
- Debian 13 auditd without killing disks: practical settings for sane auditing
- Google Search Console Crawl Anomaly: What It Means and What to Do
- DNS: NXDOMAIN vs SERVFAIL — the quick way to tell what’s broken (and fix it)
- Debian 13 Firmware Missing After Install: Fix NIC and HBA Support the Right Way
- VPN + Port Forwarding: Expose Services Safely Without Turning Your VPN Into a Hole
- Build a Right-Side TOC for Docs: Sticky, Scroll-Margin, Active Section Highlighting