In the latest version of Kubernetes 1.20, the following important changes have been made:
- Kubernetes is moving to use the Container Runtime Interface (CRI) standard. To run containers, it will no longer be used Docker, but any of the implementations of the standard, for example containerd. For most users, the difference will not be noticeable - for example, any existing Docker images will work just fine. But problems can arise when working with resource limits, logging, or interacting with GPUs and special hardware.
- Incoming requests to kube-apiserver can be sorted by priority level so that the administrator can specify which requests should be satisfied first.
- The process PID limit is now publicly available. This feature ensures that modules cannot exhaust the number of process IDs available on the Linux host or interfere with other modules by using too many processes.
Source: linux.org.ru