Traditionally, managing a fleet of machines meant being at the mercy of whatever your package provider published. Foreman and Katello changed that by giving you a way to curate, filter, and control exactly what and when hits your servers. Now, image-mode takes that one step further: instead of managing a shifting list of packages on a live system, you’re building, versioning, and deploying the entire OS as a single, immutable unit with your application baked in.

In this session, I’ll break down the practical differences between traditional package-mode and this new image-mode approach. We’ll look at how Foreman and Katello let you leverage the best of both worlds from image building to management of running systems.