> Don't Follow the Trend
Update (December 2025): The original script had a critical flaw in VIP detection that could cause both servers to incorrectly identify as PRIMARY. This has been corrected with a more reliable detection method. See the
Remember the busy light I built with an ESP8266 and Home Assistant? The one that helps my 3-year-old understand when daddy is available? Well, it's gotten a lot smarter since then.
Article written following real debugging on production infrastructure. Configuration tested with HAProxy 2.8.15 and Home Assistant 2024.12 since I had this issue for some times.
Fix RDS CAL duplicates by delegating msTS* write rights to AD and enforcing lowercase usernames at NetScaler Gateway as a bonus.
The SNI Routing Trap....
A comprehensive technical exploration of building an automated weekly diabetes monitoring system using AI-powered analysis, weather correlation and medical insights for better Type 1 diabetes management.
A TrueNAS system with sluggish file access was bottlenecked by Samsung 870 QVO drives consumer QLC NAND drives that collapse to 80 MB/s under sustained load in RAIDZ1 configurations.
Complete HAProxy HA monitoring using Prometheus and Grafana. Custom dashboard with eight panels covering instance health, throughput and error rates. Includes automated alerts for critical failures.
Migrating from a single HAProxy instance to high availability using keepalived and VRRP. This guide covers implementing automatic failover with Virtual IP management, SSL certificate synchronization and zero-downtime service continuity.
Migrating from Citrix NetScaler to HAProxy removed the 20 Mb/s freemium bottleneck and replaced dead SDX hardware with a modern, open-source load balancer. This guide covers content switching, tricky apps like Home Assistant and Outline, and the key features you can and cannot migrate.
Despite massive investment, most AI projects never reach production. Here’s why and how to finally close the gap between ambition and real-world impact.
Built a DNS infrastructure with Docker Swarm, AdGuard Home and Unbound delivering 1ms response times, comprehensive ad blocking and complete privacy while maintaining Active Directory compatibility.