In the world of Infrastructure as Code, we are conditioned to treat every red line of text as a catastrophic failure. If Ansible prints FAILED!, something is broken, right?
Not always. Sometimes, an automation tool fails precisely because it succeeded too well.
When automating infrastructure setups, we rely heavily on package managers. But what happens when the OS package manager outright rejects the official repository of the software you're trying to install?
During an automated deployment of Kubernetes binaries (kubeadm, kubelet, kubectl) on Debian 13 (Trixie), my installation script suddenly failed with a cryptographic signature error.