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UCNB is a helper application that extends Unifi Controller notifications by providing output methods beyond email. It functions as an SMTP server with logic to forward emails to other resources, initially built to send notifications to IFTTT for phone alerts.

The article discusses common problems with setting up S3 static websites on AWS, particularly around CloudFront certificate configuration. It notes that while many tutorials exist, they often lack proper certificate setup guidance or contain outdated information.

The author attempted to set up AWS Site-to-Site VPN and AWS Client VPN connections between their Ubiquiti lab network and AWS account but struggled for days trying to get their USG device to connect to the VPN server.

Alfrodull is a utility that controls LED devices connected to a computer based on predefined events. It uses a single configuration file to set event types, light colors, and transition animations.

This hobby project uses Raspberry Pi computers to run container-based workloads. It has evolved into a Kubernetes cluster with persistent storage and a VPN tunnel for serving public websites.

Cross-compiling Docker images allows building containers on one CPU architecture to run on another, addressing the long-standing issue of running Docker images across different architectures like AMD64 and ARM.

This project practices building Kubernetes controllers using Kubebuilder for template code generation and includes integration tests following best practices.

The author developed Spegel to address Kubernetes cluster downtime caused by image registry failures. The solution emerged after a Black Friday incident where GitHub container registries went down, preventing cluster scaling. Spegel was designed as a stateless alternative to traditional mirroring approaches.