how do I delete multiple versions in an app on google cloud?

Question

When I deploy a project I get this error INVALID_ARGUMENT: Your app may not have more than 15 versions. Please delete one of the existing versions before trying to create a new version.

I also went to versions on google cloud and tried to delete it manually but it says you can not delete a version with traffic shares.

Please help, any advice are greatly appreciated

Answer 1

You'll need to keep one version (latest maybe?) and then migrate all traffic to it with the "Split Traffic" link here, away from all the other versions you want to delete.

Then you will be able to select and delete those versions since they no longer handle traffic.

Finally you deploy the new version (in fact you could do that as soon as you deleted enough versions to no longer see that error) and, if needed, migrate traffic to it.

Also see gcloud app deploy for options related to versioning and traffic migration right at deployment time which could help you prevent such situation in the future:

--promote

Promote the deployed version to receive all traffic.

True by default. To change the default behavior for your current environment, run:

$ gcloud config set app/promote_by_default false

Overrides the default promote_by_default property value for this command invocation. Use --no-promote to disable.

--stop-previous-version

Stop the previously running version when deploying a new version that receives all traffic. Overrides the default stop_previous_version property value for this command invocation. Use --no-stop-previous-version to disable.

--version=VERSION, -v VERSION

The version of the app that will be created or replaced by this deployment. If you do not specify a version, one will be generated for you.