This page explains how to create service accounts using the
Identity and Access Management (IAM) API, the Google Cloud console, and the gcloud
command-
line tool.
By default, each project can have up to 100 service accounts that control access to your resources. You can request a quota increase if necessary. Learn more about quotas and limits.
Before you begin
Enable the IAM API.
Understand IAM service accounts
Required roles
To get the permissions that you need to create service accounts,
ask your administrator to grant you the
Create Service Accounts (roles/iam.serviceAccountCreator
) IAM role on the project.
For more information about granting roles, see
Manage access.
You might also be able to get the required permissions through custom roles or other predefined roles.
If you want to grant newly created service accounts access to your project, you
also need the Project IAM admin (roles/resourcemanager.projectIamAdmin
) role.
Create a service account
When you create a service account, you must provide an alphanumeric ID
(SA_NAME
in the samples below), such as
my-service-account
. The ID must be between 6 and 30 characters, and can
contain lowercase alphanumeric characters and dashes. After you create a service
account, you cannot change its name.
The service account's name appears in the email address that is provisioned
during creation, in the format
SA_NAME@PROJECT_ID.iam.gserviceaccount.com
.
Each service account also has a permanent, unique numeric ID, which is generated automatically.
You also provide the following information when you create a service account:
SA_DESCRIPTION
is an optional description for the service account.SA_DISPLAY_NAME
is a friendly name for the service account.PROJECT_ID
is the ID of your Google Cloud project.
After you create a service account, you might need to wait for 60 seconds or more before you use the service account. This behavior occurs because read operations are eventually consistent; it can take time for the new service account to become visible. If you try to read or use a service account immediately after you create it, and you receive an error, you can retry the request with exponential backoff.
Console
- In the Google Cloud console, go to the Create service account page.
The remaining steps will appear automatically in the Google Cloud console.
- Select a Google Cloud project.
- Enter a service account name to display in the Google Cloud console.
The Google Cloud console generates a service account ID based on this name. Edit the ID if necessary. You cannot change the ID later.
- Optional: Enter a description of the service account.
- If you don't want to set access controls now, click Done to finish creating the service account. To set access controls now, click Create and continue and continue to the next step.
- Optional: Choose one or more IAM roles to grant to the service account on the project.
- When you are done adding roles, click Continue.
- Optional: In the Service account users role field, add members that can impersonate the service account.
- Optional: In the Service account admins role field, add members that can manage the service account.
- Click Done to finish creating the service account.
gcloud
-
In the Google Cloud console, activate Cloud Shell.
At the bottom of the Google Cloud console, a Cloud Shell session starts and displays a command-line prompt. Cloud Shell is a shell environment with the Google Cloud CLI already installed and with values already set for your current project. It can take a few seconds for the session to initialize.
-
To create the service account, run the
gcloud iam service-accounts create
command:gcloud iam service-accounts create SA_NAME \ --description="DESCRIPTION" \ --display-name="DISPLAY_NAME"
Replace the following values:
-
SA_NAME
: the name of the service account -
DESCRIPTION
: an optional description of the service account -
DISPLAY_NAME
: a service account name to display in the Google Cloud console
-
-
Optional: To grant your service account an IAM role on your project, run the
gcloud projects add-iam-policy-binding
command:gcloud projects add-iam-policy-binding PROJECT_ID \ --member="serviceAccount:SA_NAME@PROJECT_ID.iam.gserviceaccount.com" \ --role="ROLE_NAME"
Replace the following values:
-
PROJECT_ID
: the project ID -
SA_NAME
: the name of the service account -
ROLE_NAME
: a role name, such asroles/compute.osLogin
-
-
Optional: To allow users to impersonate the service account, run the
gcloud iam service-accounts add-iam-policy-binding
command to grant a user the Service Account User role (roles/iam.serviceAccountUser
) on the service account:gcloud iam service-accounts add-iam-policy-binding \ SA_NAME@PROJECT_ID.iam.gserviceaccount.com \ --member="user:USER_EMAIL" \ --role="roles/iam.serviceAccountUser"
Replace the following values:
-
PROJECT_ID
: the project ID -
SA_NAME
: the name of the service account -
USER_EMAIL
: the email address for the user
-
REST
The
serviceAccounts.create
method creates a service account.
Before using any of the request data, make the following replacements:
PROJECT_ID
: Your Google Cloud project ID. Project IDs are alphanumeric strings, likemy-project
.SA_NAME
: The alphanumeric ID of your service account. This name must be between 6 and 30 characters, and can contain lowercase alphanumeric characters and dashes.SA_DESCRIPTION
: Optional. A description for the service account.SA_DISPLAY_NAME
: A human-readable name for the service account.
HTTP method and URL:
POST https://iam.googleapis.com/v1/projects/PROJECT_ID/serviceAccounts
Request JSON body:
{ "accountId": "SA_NAME", "serviceAccount": { "description": "SA_DESCRIPTION", "displayName": "SA_DISPLAY_NAME" } }
To send your request, expand one of these options:
You should receive a JSON response similar to the following:
{ "name": "projects/my-project/serviceAccounts/my-service-account@my-project.iam.gserviceaccount.com", "projectId": "my-project", "uniqueId": "123456789012345678901", "email": "my-service-account@my-project.iam.gserviceaccount.com", "displayName": "My service account", "etag": "BwUp3rVlzes=", "description": "A service account for running jobs in my project", "oauth2ClientId": "987654321098765432109" }
C++
To learn how to install and use the client library for IAM, see IAM client libraries. For more information, see the IAM C++ API reference documentation.
To authenticate to IAM, set up Application Default Credentials. For more information, see Set up authentication for a local development environment.
C#
To learn how to install and use the client library for IAM, see IAM client libraries. For more information, see the IAM C# API reference documentation.
To authenticate to IAM, set up Application Default Credentials. For more information, see Set up authentication for a local development environment.
Go
To learn how to install and use the client library for IAM, see IAM client libraries. For more information, see the IAM Go API reference documentation.
To authenticate to IAM, set up Application Default Credentials. For more information, see Set up authentication for a local development environment.
Java
To learn how to install and use the client library for IAM, see IAM client libraries. For more information, see the IAM Java API reference documentation.
To authenticate to IAM, set up Application Default Credentials. For more information, see Set up authentication for a local development environment.
Python
To learn how to install and use the client library for IAM, see IAM client libraries. For more information, see the IAM Python API reference documentation.
To authenticate to IAM, set up Application Default Credentials. For more information, see Set up authentication for a local development environment.
After you create a service account, grant one or more roles to the service account so that it can act on your behalf.
Also, if the service account needs to access resources in other projects, you usually must enable the APIs for those resources in the project where you created the service account.
What's next
- Learn how to list and edit service accounts.
- Review the process for granting IAM roles to all types of principals, including service accounts.
- Understand how to attach service accounts to resources.
Try it for yourself
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