Create multiple database instances via Firebase CLI

Question

I am looking into automating the deployment of a project that is made up of multiple functions that are triggers on multiple realtime database instances.

Using firebase deploy allows you to deploy both functions and database rules. I have also created targets so i can deploy different rules for different database instances.

The only missing part of my automation is actually creating those different database instances via the Firebase CLI tool; Since deploying a trigger function to a specific database that doesn't exist will fail. Ideally i would like to make sure to create those database instances if they don't exist and then continue my deployment.

Is there a way to create different database instances via the CLI ?

I don't believe there's a way to do this, but you can always file a feature request: firebase.google.com/support/contact/bugs-features — Doug Stevenson
– Doug Stevenson, Commented Oct 2, 2018 at 2:38
> I have also created targets so i can deploy different rules for different database instances. That sounds suspicious. The most common (and idiomatic) use-case for having multiple databases is for sharding users over database instances. In such a case, each database instance would have the same rules. It sounds a bit like a XY problem: what are you trying to accomplish by automatically creating database instances? — Frank van Puffelen
– Frank van Puffelen, Commented Oct 2, 2018 at 2:58
@FrankvanPuffelen I am using different instances of the database for different flavours of the same projects thats, in some unique case the database rule differs a bit and thats why im using different targets... that is actually working pretty well and not my problem, that was just to give context. What i want to accomplish is to actually be able to add this to my CD build script to create a new database instance if a new flavour is needed. — N Jay
– N Jay, Commented Oct 2, 2018 at 3:48
I'd recommend using separate projects for that. As Doug commented: there is currently no API for creating database instances. — Frank van Puffelen
– Frank van Puffelen, Commented Oct 2, 2018 at 3:56

Morten Nyhaug · Accepted Answer · 2020-04-23 12:27:24Z

1

I don't know when it was added, but this might be useful for others having the same question.

You can create a Firebase Realtime Database instance using the following CLI command:

firebase database:instances:create [instance-name]

I don't know why this isn't described in the CLI reference, but it is mentioned here: https://firebaseopensource.com/projects/firebase/firebase-tools/

answered Apr 23, 2020 at 12:27

Morten Nyhaug

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Ashutosh · Accepted Answer · 2022-02-10 17:24:00Z

0

You can Create realtime database instance by firebase CLI using the below command

firebase database:instances:create -P <alias_or_project_id> <DBinstanceName>

This Command work fine if you have paid plan.

For Free Plan it throw error:- FirebaseError: HTTP Error: 400, Precondition check failed.

Note : <DBinstanceName> should be alpha-numeric with hyphens.

answered Feb 10, 2022 at 17:24

Ashutosh

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