Create a Go 1.11 app in the App Engine standard environment

Create a Go 1.11 app in the App Engine standard environment

Region ID

The REGION_ID is an abbreviated code that Google assigns based on the region you select when you create your app. The code does not correspond to a country or province, even though some region IDs may appear similar to commonly used country and province codes. For apps created after February 2020, REGION_ID.r is included in App Engine URLs. For existing apps created before this date, the region ID is optional in the URL.

Learn more about region IDs.

OK

This page shows you how to deploy a basic App Engine application that displays a short message. For a more in-depth introduction to Go on App Engine, see Building an App.

Is App Engine the right computing option for you? See other options for hosting your application on Google Cloud.

Costs

There are no costs associated with running this guide. Running this sample app alone does not exceed your free quota.

Before you begin

1. Sign in to your Google Cloud account. If you're new to Google Cloud, create an account to evaluate how our products perform in real-world scenarios. New customers also get $300 in free credits to run, test, and deploy workloads.

2. In the Google Cloud console, on the project selector page, select or create a Google Cloud project.

   Note: If you don't plan to keep the resources that you create in this procedure, create a project instead of selecting an existing project. After you finish these steps, you can delete the project, removing all resources associated with the project.

   Go to project selector

3. Make sure that billing is enabled for your Google Cloud project.

4. Enable the Cloud Build API.

   Enable the API

5. Install the Google Cloud CLI.

6. To initialize the gcloud CLI, run the following command:

   gcloud init

7. In the Google Cloud console, on the project selector page, select or create a Google Cloud project.

   Note: If you don't plan to keep the resources that you create in this procedure, create a project instead of selecting an existing project. After you finish these steps, you can delete the project, removing all resources associated with the project.

   Go to project selector

8. Make sure that billing is enabled for your Google Cloud project.

9. Enable the Cloud Build API.

   Enable the API

10. Install the Google Cloud CLI.

11. To initialize the gcloud CLI, run the following command:

    gcloud init

Additional prerequisites

1. Initialize your App Engine app with your project and choose its region:

   gcloud app create --project=[YOUR_PROJECT_ID]
   

   When prompted, select the region where you want to locate your App Engine application.

   Caution: You cannot change an app's region once it has been set.

2. Install the following prerequisites:

   • Download and install Git.

• Run the following command to install the gcloud component that includes the App Engine extension for Go 1.11:

  gcloud components install app-engine-go
  

App Engine locations

App Engine is regional, which means the infrastructure that runs your apps is located in a specific region, and Google manages it so that it is available redundantly across all of the zones within that region.

Meeting your latency, availability, or durability requirements are primary factors for selecting the region where your apps are run. You can generally select the region nearest to your app's users, but you should consider the locations where App Engine is available as well as the locations of the other Google Cloud products and services that your app uses. Using services across multiple locations can affect your app's latency as well as its pricing.

You cannot change an app's region after you set it.

Note: Two locations, which are called europe-west and us-central in App Engine commands and in the Google Cloud console, are called europe-west1 and us-central1, respectively, elsewhere in Google documentation.

If you already created an App Engine application, you can view its region by doing one of the following:

• Run the gcloud app describe command.

• Open the App Engine Dashboard in the Google Cloud console. The region appears near the top of the page.

OK

This quickstart assumes that you are familiar with the Go programming language and that you have installed Go.

Download the Hello World app

We've created a simple Hello World app for Go so you can quickly get a feel for deploying an app to Google Cloud Platform. Follow these steps to download Hello World to your local machine.

Download the sample app and navigate into the app directory:

1. Clone the Hello World sample app repository:

   git clone https://github.com/GoogleCloudPlatform/golang-samples
   

   Alternatively, download the sample as a zip file and extract it.

2. Change to the directory that contains the sample code:

   cd golang-samples/appengine/go11x/helloworld/
   

Deploying Hello World to App Engine

1. Deploy the Hello World app on App Engine by running the following command from the golang-samples/appengine/go11x/helloworld directory:

   gcloud app deploy
   

2. View the live app at https://PROJECT_ID.REGION_ID.r.appspot.com:

   gcloud app browse
   

The message Hello, World! is now delivered by a web server running on an App Engine instance.

Congratulations! You've successfully deployed a Go web service on App Engine!

Clean up

If you want to continue learning about App Engine, you can keep your Google Cloud project and follow along with Building an App.

Alternatively, you can delete your Google Cloud project to stop billing for all the resources used within that project.

Caution: Deleting a project has the following effects:
• Everything in the project is deleted. If you used an existing project for the tasks in this document, when you delete it, you also delete any other work you've done in the project.
• Custom project IDs are lost. When you created this project, you might have created a custom project ID that you want to use in the future. To preserve the URLs that use the project ID, such as an appspot.com URL, delete selected resources inside the project instead of deleting the whole project.
1. In the Google Cloud console, go to the Manage resources page.

   Go to Manage resources

2. In the project list, select the project that you want to delete, and then click Delete.
3. In the dialog, type the project ID, and then click Shut down to delete the project.

What's next

Now that you have experience deploying a web service on App Engine, get a more in-depth introduction to Go on App Engine by reading Building an App.