gcloud app deploy does not remove previous versions

Question

I am running a Node.js app on Google App Engine, using the following command to deploy my code:

gcloud app deploy --stop-previous-version

My de

Answer 1

As far as I can tell, for Standard Environment with automatic scaling at least, it is normal for old versions to remain "serving", though they should hopefully have zero instances (even if your scaling configuration specifies a nonzero minimum). At least that's what I've seen. I think (I hope) that those old "serving" instances won't result in any charges, since billing is per instance.

I know most of the above answers are for Flexible Environment, but I thought I'd include this here for people who are wondering.

(And it would be great if someone from Google could confirm.)