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      What’s new in Kubernetes 1.21

      pubsub.slavino.sk / infoworldcom · Wednesday, 9 December, 2020 - 16:00 edit · 1 minute

    The newest version of Kubernetes , 1.20, introduces the following major changes:
    • The Docker runtime is being deprecated. However, this doesn’t mean Docker images or Dockerfiles don’t work in Kubernetes anymore . It just means Kubernetes will now use its own Container Runtime Interface (CRI) product to execute containers instead of the Docker runtime. For most users this will have no significant impact—e.g., any existing Docker images will work fine. But some issues might result when dealing with runtime resource limits, logging configurations, or how GPUs and other special hardware interact with the runtime (something to note for those using Kubernetes for machine learning). The previous link provides details on how to migrate workloads, if needed, and what issues to be aware of.
    • Volume snapshot operations are now stable. This allows volume snapshots—images of the state of a storage volume—to be used in production. Kubernetes applications that depend on highly specific state, such as images of database files, will be easier to build and maintain with this feature active.
    • Kubectl Debug is now in beta, allowing common debug workflows to be conducted from within the kubectl command-line environment.
    • API Priority and Fairness (APF) is now enabled by default, although still in beta. Incoming requests to kube-apiserver can be sorted by priority levels, so that the administrator can specify which requests should be satisfied most immediately.
    • Process PID Limiting is now in general availability. This feature ensures that pods cannot exhaust the number of process IDs available on a Linux host, or interfere with other pods by using up too many processes.

    Kubernetes 1.17, released in December 2019, introduced the following key new features and revisions:

    To read this article in full, please click here


    Značky: #Kubernetes, #Rozne, #Containers