[a1r]

Update from Google status page:

We're still actively working to resolve issues with Identity/Authentication. Future updates will follow when there is significant progress to report.

To summarize; some long-lived OAuth tokens have inadvertently been invalidated. This may affect the following Cloud services and will manifest as authentication errors:

Cloud APIs using OAuth tokens, and related services that use them

gcloud SDK

Cloud Storage gsutil

Cloud Dataflow

Note: not all customers are affected by this.

OAuth tokens may be recreated by running the following commands:

$ gcloud auth application-default login

$ gcloud auth login

https://status.cloud.google.com/

[bm98]

It's odd that the status pasted in the parent has disappeared from https://status.cloud.google.com/ , as the page seems to be designed to keep event history - but it's not in the history. I can still find it in Google's own cache, though - in the snapshot of the page as it appeared on Feb 24, 2017 11:19:38 GMT.