- Proxmox PCI Passthrough Fails: IOMMU Groups and the Classic Traps
- ZFS send/receive DR drill: Practicing Restore, Not Just Backup
- Docker Compose Profiles: Dev/Prod Stacks Without Duplicate YAML
- ZFS snapshot deletion: Why Snapshots Refuse to Die (and How to Fix It)
- Docker “exec format error”: Wrong-Arch Images and the Clean Fix
- Modern CSS :has() in Real UI: Parent Selectors for Forms, Cards, Filters
- Ubuntu 24.04 TLS/Cert Errors After Time Drift: Fix NTP/Chrony the Right Way
- ZFS Disaster Scenarios: What Fails First and What You Can Save
- ZFS Replication Over WAN: Making Sends Fast on Slow Links
- PostgreSQL vs YugabyteDB: distributed Postgres-style—amazing or overkill
- DNS Wildcard Records: The Convenience That Quietly Breaks Things (and Fixes)
- Split-horizon DNS: Make LAN names resolve without breaking the public internet
- PostgreSQL vs Percona Server tuning: who needs more knobs for speed
- Breadcrumbs + Next/Prev Navigation for Documentation Sites (Clean, Fast, Accessible)
- Proxmox “could not resolve host”: DNS/IPv6/proxy quick root-cause workflow
- Docker volumes: Permission denied — UID/GID strategies that stop the pain
- Port 25 Blocked: How to Send Email Anyway (Without Sketchy Hacks)
- ZFS for Backups: Snapshots + Send/Receive Without Tears
- MySQL vs PostgreSQL Connection Pooling: Who Needs It Earlier on a VPS
- ZFS Replacing Disks: The Safe Workflow That Avoids Pool Drama
- ZFS Slop Space: Why Pools Feel Full Before 100%
- RDP Between Offices Without Open Ports: The Safe “RDP Only via VPN” Setup
- MikroTik IPsec IKEv2 Between Offices: How to Make It Stable (and Why It Flaps)
- ZFS quota vs reservation: The Space Control Pair You Must Understand
- MariaDB vs Redis: caching patterns that speed up websites without data loss
- WordPress Core Web Vitals: real fixes for LCP/INP/CLS
- Ceph performance on Proxmox is slow: 10 checks that actually find the bottleneck
- MySQL vs MariaDB upgrades: how to update without nuking production
- Docker Multi-Network Containers: Stop Accidental Exposure to the Wrong Network
- ZFS Send Stream Compatibility: Moving Data Between Different ZFS Versions
- ZFS Resilver vs Scrub: Stop Mixing Them Up
- Docker Compose “version is obsolete”: modernize your compose file safely
- Email deliverability: Messages land in spam — the real fixes (SPF/DKIM/DMARC done right)
- Proxmox “qemu-img: Could not create”: permissions, paths, and filesystem fixes that actually work
- Ubuntu 24.04: IPv6 firewall forgotten — close the real hole (not just IPv4) (case #72)
- MySQL vs TiDB: MySQL Compatibility vs Operational Complexity—What You’re Signing Up For
- ZFS iSCSI: ZVOL Setup That Doesn’t Stutter Under Load
- Laptop GPUs: why one name can hide five performance levels
- Ubuntu 24.04 “Connection reset by peer”: Prove whether it’s client, proxy, or server (case #14)
- Email: Authenticated relay vs direct send — pick the approach that doesn’t get you blocked
- Debian 13: Thermal throttling ruins throughput — prove it and fix cooling/power limits
- Debian 13 IRQ storms and weird latency: check irqbalance and fix interrupts
- Ubuntu 24.04: Secure Boot Blocks Drivers — Fix It Without Nuking Your Setup
- MySQL vs Percona Server: replication stability—why ops teams switch
- ZFS snapdir=visible: Auditing Snapshots Without Making Users Rage
- Proxmox backups to PBS fail: common chunk/space errors and what to do
- Docker on Windows/WSL2 is slow: fixes that actually help
- ZFS Prefetch: The Hidden Setting Behind Cache Thrash
- Ubuntu 24.04: sudo is slow — DNS/hostname fixes that remove the delay (case #66)
- ZFS RAIDZ1: The Risk Calculation Most People Never Do