Roles determine which services and actions are available to a user account or service account. The following types of roles grant access to App Engine:
Primitive roles which apply to all services and resources in a project, including but not limited App Engine. For example, an account with the Editor role can change App Engine settings as well as Cloud Storage settings.
App Engine predefined roles, which provide granular access to App Engine. Each service in your GCP project provides its own predefined roles. For example, an account that only has the App Engine Deployer role can deploy App Engine apps but cannot view or create objects in Cloud Storage. Such an account would also need a specific Cloud Storage predefined role to create or view objects in Cloud Storage.
Custom roles, which provide granular access according to a list of permissions you specify.
You can use primitive roles when you are working on smaller projects that have less complex needs. For more fine-tuned access controls, use predefined roles.
Primitive roles and apply to all services and resources in a project. For example, an account in the Editor role can change App Engine settings as well as Cloud Storage settings.
|Role||GCP Console permissions||Tools permissions|
||Required to create App Engine applications. All viewer and editor privileges, plus the ability to view deployed source code, invite users, change user roles, and delete an application.||Required to create App Engine applications. Deploy application code and update all configurations.|
||View application information and edit application settings.||Deploy application code, update indexes/queues/crons.|
||View application information.||Request logs|
Predefined App Engine roles
The predefined roles for App Engine provide you with finer grained options for access control.
These roles only provide access to App Engine. If your project includes other services, such as Cloud Storage or Cloud SQL, you will need to assign additional predefined roles to enable access to the other services.
The following table lists each App Engine role with its targeted user. Use the comparison table to view all role capabilities.
|App Engine Admin||Read/Write/Modify access to all application configuration and settings.||
|App Engine Service Admin||
|App Engine Deployer||
See the deployments section below for more information about the required roles.
|App Engine Viewer||Read-only access to all application configuration and settings.||
|App Engine Code Viewer||Read-only access to all application configuration, settings, and deployed source code.||
Comparison of App Engine predefined roles
The following table provides a complete comparison of the capabilities of each predefined App Engine role.
|Capability||App Engine Admin||App Engine Service Admin||App Engine Deployer||App Engine Viewer||App Engine Code Viewer|
|List all services, versions and instances||Yes||Yes||Yes||Yes||Yes|
|View all application, service, version, and instance settings||Yes||Yes||Yes||Yes||Yes|
|View runtime metrics such as resource usage, load information, and error information||Yes||Yes||Yes||Yes||Yes|
|View app source code||No||No||No||No||Yes|
|Deploy a new version of an app||Yes||No||Yes||No||No|
|Split or migrate traffic||Yes||Yes||No||No||No|
|Start and stop a version||Yes||Yes||No||No||No|
|Delete a version||Yes||Yes||Yes||No||No|
|Delete an entire service||Yes||Yes||No||No||No|
|Use SSH to connect to a VM instance in the flexible environment||Yes||No||No||No||No|
|Shut down an instance||Yes||No||No||No||No|
|Disable and re-enable the App Engine application||Yes||No||No||No||No|
|Access handlers that have a login:admin restriction||Yes||No||No||No||No|
|Update dispatch rules||Yes||No||No||No||No|
|Update DoS settings||Yes||No||No||No||No|
|Update cron schedules||No||No||No||No||No|
|Update default cookie expiration||Yes||No||No||No||No|
|Update Email API Authorized Senders||Yes||No||No||No||No|
For details about the specific IAM permissions that are granted by each role, see the Roles section of the Admin API.
Recommended role for application deployment
The predefined App Engine Deployer role is the recommended role for an account that is responsible for only deploying a new version of an app. The App Engine Admin role is an alternative that includes additional administrative privileges, including the ability to deploy versions.
With either role, an account is granted adequate permission to use the
Admin API to deploy apps. To grant
permission to use the
gcloud commands or other App Engine
tooling, you must also give the account the Storage
For details about how to grant the required permissions, see Deploying using IAM Roles.
Separation of deployment and traffic routing duties
Many organizations prefer to separate the task of deploying an application version from the task of ramping up traffic to the newly created version, and to have these tasks done by different job functions. The App Engine Deployer and App Engine Service Admin roles provide this separation:
App Engine Deployer role - Accounts are limited to deploying new versions and deleting old versions that are not serving traffic. The account with the App Engine Deployer role won't be able to configure traffic to any version nor change application-level settings such as dispatch rules or authentication domain.
App Engine Service Admin role - Accounts cannot deploy a new version of an app nor change application-level settings. However, those accounts have privileges to change the properties of existing services and versions, including changing which versions can serve traffic. The App Engine Service Admin role is ideal for an Operations/IT department that handles ramping up traffic to newly deployed versions.
Limitations of the predefined roles
None of the predefined roles listed above grant access to the following:
- Create App Engine applications.
- View and download application logs.
- View Monitoring charts in the GCP Console.
- Enable and Disable billing.
- Set up a daily Spending Limit (formerly known as Budget) for App Engine and view dollar amount spent.
- Run security scans in Cloud Security Scanner.
- Access configuration or data stored in Datastore, Task Queues, Memcache, Cloud Search or any other Cloud Platform storage product.