19.03.16

19.03.16

(2021-05-17)

Components

Component

Version

Mirantis Container Runtime

19.03.16

containerd

1.3.10

runc

1.0.0-rc10

Packaging

  • Added a technical preview for cri-docker (previously known as dockershim).

  • Fixed an issue wherein killing containerd caused systemd to stop docker.

Networking

  • Fixed an issue wherein swarm service VIPs timed out from Windows containers, resulting in the following error in dockerd event logs:

    Failed to add ILB policy for service service [] failed during
    hnsCallRawResponse: hnsCall failed in Win32: The specified port already
    exists.
    

    The Windows Operating System update KB4577668 introduced the issue on October 13, 2020, affecting all versions of MCR (FIELD-3310).

Known issues

  • Centos and RHEL 7.x kernels may experience memory exhaustion due to slab cache usage. Because this is a kernel feature, the issue cannot be resolved with MCR code.

    Workarounds:

    • (Recommended) Update to a kernel that supports setting cgroups.memory=nokmem and apply the change (for customers using Centos or RHEL 7.7 and above).

    • Increase the memory available to the machine for slab usage.

    (FIELD-3466)