A journey of building automated Debian templates with Packer across multiple platforms. Navigating preseed configurations, platform-specific quirks, and integrating Ansible provisioning to create standardized, reproducible infrastructure builds.

Step-by-step guide to building a three-node Kubernetes 1.30.2 cluster on Proxmox using Debian 12, containerd runtime, and Calico CNI. Covers installation, configuration, worker node joining, and deploying a test application with NodePort service exposure.