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I recently submittet a "firebase deploy" command, and was notified that my deploy attempt had failed, due to insufficient authentication scope. What does "insufficient authentication scopes", mean?
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Firebase Authentication provides backend services, easy-to-use SDKs, and ready-made UI libraries to authenticate users to your app. It supports authentication using passwords, phone numbers, popular federated identity providers like Google, Facebook and Twitter, and more.
Generate an access tokenThe Realtime Database REST API accepts standard Google OAuth2 access tokens. The access tokens can be generated using a service account with proper permissions to your Realtime Database.
The short answer is yes: by authenticating your users and writing security rules, you can fully restrict read / write access to your Firebase data. In a nutshell, Firebase security is enforced by server-side rules, that you author, and govern read or write access to given paths in your Firebase data tree.
I had a similar issue and I contacted the support who told me they are working on it.
They also provided a workaround that worked for me. Instead of calling firebase deploy to update everything, split the process and call:
firebase deploy --only hosting
firebase deploy --only database
For hosting, an other workaround is to deploy twice (the update actually works, only the 'Current' version is not updated to the latest), and then rollback the latest deploy, which will make the previous (identical) one current.
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