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Using the Go Managed VM Environment

The Go runtime is available as a Managed VM standard runtime. Many existing App Engine applications can run in a Managed VM. Before you migrate, be sure that your app only uses App Engine service APIs that are supported by the Managed VM environment. Currently, Managed VMs support these services:

  • Datastore
  • Memcache
  • Task Queues
  • Logging
  • Users

Configuring an app for managed VMs

You can switch your app to Managed VMs by changing just a few lines in your application's app.yaml file:

The vm and runtime keys are required:

runtime: go
vm: true

You must also take into account these differences when migrating an exisitng app:

  • Managed VMs support manual and automatic scaling. If your app uses basic scaling, you'll need to change that.
  • Managed VMs do not assign instance classes. Instead, you select resources in the app.yaml file.

All the settings for managed VMs are described in the configuration instructions

Testing and deploying managed VMs

Managed VM development requires that you install Docker and the Google Cloud SDK. The setup steps are explained on the managed VM Getting Started page. Developing and Deploying Managed VMs describes the use of the gcloud Cloud SDK commands.

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