28 lines
1 KiB
Markdown
28 lines
1 KiB
Markdown
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published: false
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---
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# Migrating a 1.0 registry to 2.0
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TODO: This needs to be revised in light of Olivier's work
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A few thoughts here:
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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.
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The image formats are not compatible in any way. One must convert v1 images to v2 images using a docker client or other tool.
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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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-----
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The Docker Registry 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:
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1. Configure and test a 2.0 registry image in a sandbox environment.
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2. Back up up your production image storage.
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Your production image storage should reside on a volume or storage backend.
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Make sure you have a backup of its contents.
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3. Stop your existing registry service.
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4. Restart your registry with your tested 2.0 image.
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