Bootable containers
About ten years ago, the tech world underwent a major revolution with the emergence of containers. And now it seems that we are on the eve of a new evolution, with the emergence of bootable containers. This technology is a real game changer. Not only for running applications, but also for managing entire operating systems. In this article, we dive into this new technology and explain why it is so relevant for organizations.
What are bootable containers?
First, a disclaimer: at the time of writing, bootc, the core component of bootable containers, has not even reached version 1.0. This means that there are still uncertainties and that a lot can change in a short period of time.
That said, there is already a lot to share about this new concept.
Bootable containers extend the concept of traditional containers by including a complete operating system environment. Unlike classic containers, which run isolated applications, bootable containers encapsulate the entire OS. This allows a system to boot up and run entirely from a single container image. With bootable containers, it is possible to use a single CI/CD workflow, image scanning tools, and more to deploy both OS and application containers.
Key benefits of bootable containers
Transactional updates
Bootable containers enable seamless, in-place updates of the operating system using container images. This reduces maintenance costs, ensures higher availability, and improves system reliability. Transactional updates mean that changes can be rolled out or rolled back quickly, with minimal disruption to operations.
Portability
By using standardized container formats, bootable containers ensure consistent deployments across different (cloud) environments. This consistency reduces compatibility issues and speeds up the transition from development to production, which increases developer productivity. Bootable containers effectively bypass or replace legacy infrastructure toolchains used to provision VMs with operating systems.