adds documentation for nexus migrations

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Summary

Adds documentation regarding Nexus migrations using Velero

assigned to @gedd.johnson

requested review from @andrew.greene

requested review from @runyontr

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• 96cdbfed - adds documentation for nexus migrations

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Looks great. Would love to see a couple of examples to show its backed up successfully:

1. Push an image to nexus in the setup and use crane ls to show the images present
2. Once the restore is complete, show logging into nexus with the same credentials produces the same output for crane ls?

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Thanks for the feedback @runyontr! Suggested changes have been added, including pushing sample images in the preparation step, pulling them back down after the restoration and ensuring they can be run

approved this merge request

LGTM

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Is there anything different here than what we have documented in the Velero repo? If there's something unique to the Nexus backup and restore I would think it'd be better to add to those docs? Maybe the issue is visibility and we should link to the Velero docs here?

Also, would prefer if we use a "vendor/company neutral" image for the test - most of our docs use podinfo as an example, we have that image rehosted on repo1 as well - registry.dso.mil/platform-one/big-bang/apps/sandbox/podinfo/podinfo:6.0.0 (ref).

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• 899842f0 - adds documentation for nexus migrations

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resolved all threads

approved this merge request

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merged

mentioned in commit 8d11e761