自动创建的Google Cloud计算引擎实例，不是我自己创建的

Question

I started using Google Cloud for a webapp project of my own. I've been using many of its features such as Standard App Engine for deployment, and its SQL for databases.

In the last week I started using Cloud Storage for uploading and retrieving files. The thing is, that after creating a service account for this (as stated in the documentation), 8 VM instances are automatically created, not by me, and even if I delete or stop them, after a while new ones are started. These are created by the service account required for Cloud Storage for my project. I don't understand what is going on and its making me spend money I shouldn't be paying.

Any help for a solution to this problem would be great. Thanks

Answer 1

GAE scenario: If you have a standard Google App Engine app, it is auto-scaled in response to processing volume, unless you choose the number of instances manually. All the configuration is specified by you in the app.yaml file. I recommend having a look at a table in this Instance scaling docs description. There are three types of scaling: automatic , basic and manual . What will be of your interest:

• Manual scaling:

A service with manual scaling use resident instances that continuously run the specified number of instances irrespective of the load level.

• Basic scaling:

A service with basic scaling is configured by setting the maximum number of instances in the max_instances parameter of the basic_scaling setting. The number of live instances scales with the processing volume.

Notice also that for manual and basic scaling you have a free daily quota of 8 instance-hours and for automatic scaling 28 instance-hours.

Managed instance group scenario: If you're using Compute Engine Managed instance group (not a GAE app), you can set the maximum number of replicas for the autoscaler with the --max-num-replicas option of the gcloud compute instance-groups managed set-autoscaling command.