While the specifications provide us with a common ground, there are also some trends evolving around the choice of OS for our containers. There are several tailored-fit OSes that are being developed specifically to run container workloads. Although implementations vary, they all have similar characteristics. The focus is on a slim installation base, atomic OS updating, and signed applications for efficient and secure operations.
One OS that is gaining popularity is CoreOS. CoreOS offers major benefits for both security and resource utilization. It provides resource utilization by completely removing package dependencies from the picture. Instead, CoreOS runs all applications and services in containers. By providing only a small set of services required to support running containers and bypassing the need for hypervisor usage, CoreOS lets us use a larger portion of the resource pool to run our containerized applications. This allows users to gain higher performance from their infrastructure...
