About oc-mirror plugin v2

The oc-mirror OpenShift CLI (oc) plugin is a single tool that mirrors all required Red Hat OpenShift Container Platform content and other images to your mirror registry.

To use the new version of oc-mirror, add the --v2 flag to the oc-mirror plugin v2 command line.

oc-mirror plugin v2 has the following features:

  • Provides a centralized method to mirror Red Hat OpenShift Container Platform releases, Operators, helm charts, and other images.

  • Verifies that the complete image set specified in the image set configuration file is mirrored to the mirrored registry, regardless of whether the images were previously mirrored or not.

  • Uses a cache system instead of metadata, which prevents the need to start the mirroring process over in the case of a failure for a single step of the process.

  • Maintains minimal archive sizes by incorporating only new images into the archive.

  • Generates mirroring archives with content selected by mirroring date.

  • Can generate ImageDigestMirrorSet (IDMS) and ImageTagMirrorSet (ITMS) resources, which cover the full image set, instead of an ImageContentSourcePolicy (ICSP) resource, which only covered incremental changes to the image set for each mirroring operation with v1.

  • Does not perform automatic pruning. v2 now uses a Delete feature, which grants users more control over deleting images.

  • Introduces support for registries.conf files. This change facilitates mirroring to multiple enclaves while using the same cache.

← Previous: Mirroring on a remote host with mirror registry for Red Hat OpenShift | ↑ Up: Disconnected environments | ⌂ Home: Red Hat OpenShift Container Platform | Next: High level workflow →