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Signed-off-by: Mary Anthony <mary@docker.com>
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Mary Anthony 2015-04-02 08:11:19 -07:00
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# Migrating a 1.0 registry to 2.0
TODO: This needs to be revised in light of Olivier's work
A few thoughts here:
There was no "1.0". There was an implementation of the Registry API V1 but only a version 0.9 of the service was released.
The image formats are not compatible in any way. One must convert v1 images to v2 images using a docker client or other tool.
One can migrate images from one version to the other by pulling images from the old registry and pushing them to the v2 registry.
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The Docker Registry Service 2.0 is backward compatible with images created by the earlier specification. If you are migrating a private registry to version 2.0, you should use the following process:
1. Configure and test a 2.0 registry image in a sandbox environment.
2. Back up up your production image storage.
Your production image storage should reside on a volume or storage backend.
Make sure you have a backup of its contents.
3. Stop your existing registry service.
4. Restart your registry with your tested 2.0 image.