MCR 19.03.x Release Notes

This document describes the latest changes, enhancements, known issues, and fixes for Mirantis Container Runtime (MCR) for versions 19.03.x.


In developing MCR 19.03.x, Mirantis has been transitioning from legacy Docker Hub-issued licenses to JWT licenses, as detailed below:

  • Versions 19.03.0 to 19.03.10: Docker Hub licenses only

  • Versions 19.03.11 to 19.03.17: Docker Hub licenses and JWT licenses

  • Versions 19.03.18 and later: JWT licenses only

Using MKE with a JWT license to manage MCR causes MCR to log error messages, though the software does not fail.