Kubernetes PodPreset Demystified: Automate Common Config Injections

Imagine you have dozens of Kubernetes pods that all need to mount the same volume, use the same secret, or set the same environment variables. Instead of repeating those configurations in every Pod spec, PodPresets allow you to automatically inject shared information into Pods at creation time. A PodPreset is like a template of common configuration values (like secrets, config maps, volumes, env vars) that can be applied to multiple Pods based on label selectors. This makes your deployments cleaner, more consistent, and easier to manage.