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Showing content from https://github.com/kubernetes/k8s.io/issues/2396 below:

Deprecate and migrate away from gs://kubernetes-release · Issue #2396 · kubernetes/k8s.io · GitHub

Part of umbrella issue to migrate the kubernetes project away from use of GCP project google-containers: #1571

This issue covers the deprecation of and migration away from the following google.com assets:

• the google.com-owned GCS bucket gs://kubernetes-release living in GCP project google-containers, in favor of the community-owned GCS bucket gs://k8s-release living in GCP project TBD (currently k8s-release)
• the region-specific GCS buckets gs://kubernetes-release-asia and gs://kubernetes-release-eu, same as above but gs://k8s-release-eu and gs://k8s-release-asia instead
• TODO: are there container images involved here as well, or did we already address that with k8s.gcr.io?

These are not labeled as steps just yet because not everything needs to be completed to full fidelity in strict sequential order. I would prefer that we get a sense sooner rather than later what the impact of shifting dl.k8s.io traffic will be, in terms of how much budget, and what percentage of traffic that represents vs. hardcoded traffic.

There are likely a lot of people out there that have gs://kubernetes-release hardcoded. It's unreasonable to stop putting new releases there without some kind of advance warning. So after announcing our intent to deprecate gs://kubernetes-release, we should decide how we're going to sync new releases back there (and its region-specific buckets)

• gsutil rsync
• Google Cloud Storage Transfer Service
• etc.

As for the deprecation window itself, I think it's fair to treat this with a deprecation clock equivalent to disabling a v1 API.

• Someone (probably me) manually created gs://k8s-release and its other buckets to prevent someone else from grabbing the name
• The -eu and -asia buckets are not actually region-specific, and should be recreated as such
• We should decide how we're going to implement region syncing (same as above)
• We should decide at this stage whether we want to block on a binary artifact promotion process, or get by with one of the syncing mechanisms from above

The only time a kubernetes release artifact GCS bucket name needs to show up in a URI is if gsutil is involved, or someone is explicitly interested in browsing the bucket. For tools like curl or wget that retrieve binaries via HTTP, we have https://dl.k8s.io, which will allow us to automatically shift traffic from one bucket to the next depending on the requested URIs

I started doing this for a few projects while working on #2318, e.g.

• use dl.k8s.io where possible cloud-provider-gcp#252
• 🌱 Use dl.k8s.io instead of hardcoded GCS URIs kubernetes-sigs/cluster-api#4958

TODO: a cs.k8s.io query and resulting checklist of repos to investigate

TODO: there is a separate issue for this.

We will pre-seed gs://k8s-release with everything in gs://kubernetes-release, and gradually modify dl.k8s.io to redirect more and more traffic to gs://k8s-release.

The idea is not to flip a switch, just in case that sends us way more traffic than our budget is prepared to handle. Instead, let's consider shifting traffic gradually for certain URI patterns, or a certain percentage of requests, etc. It's unclear whether this will be as straightforward as adding lines to nginx, or whether we'll want GCLB changes as well.

/area artifacts
/area prow
/area release-eng
/sig release
/sig testing
/wg k8s-infra
/priority important-soon
/kind cleanup
/milestone v1.23

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