SQL sample README suggests using JSON keys against best practices

[rogerthatdev]

The README for Cloud SQL MySQL samples includes instructions to download a JSON key:

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4. Create a service account following these instructions, and then grant the roles/cloudsql.client role following these instructions.

Download a JSON key to use to authenticate your connection.

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The console page for downloading JSON keys includes the warning:

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Service account keys could pose a security risk if compromised. We recommend you avoid downloading service account keys and instead use the Workload Identity Federation . You can learn more about the best way to authenticate service accounts on Google Cloud here.

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This conflicting messaging could cause friction for new users to Google Cloud.

Recommendation:

Update the Cloud SQL sample README to replace the use of JSON keys with an alternative such as Workload Identity Federation or service account impersonation.

[iennae]

@mrfaizal do you have any insight on who might be able to assess and triage this ? Thanks

[iennae]

@enocom another one for you if you have bandwidth

[enocom]

cc @jackwotherspoon who's going to significantly clean up all these samples.

I can grab this one as well. The README really shouldn't exist and instead just reference the public docs (where this information should live as a single source of truth). For now, I'll just clean up these items.