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prowler/docs/tutorials/gcp/authentication.md
2024-07-11 09:27:04 -04:00

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# GCP authentication
Prowler will use by default your User Account credentials, you can configure it using:
- `gcloud init` to use a new account
- `gcloud config set account <account>` to use an existing account
Then, obtain your access credentials using: `gcloud auth application-default login`
Otherwise, you can generate and download Service Account keys in JSON format (refer to https://cloud.google.com/iam/docs/creating-managing-service-account-keys) and provide the location of the file with the following argument:
```console
prowler gcp --credentials-file path
```
???+ note
`prowler` will scan the GCP project associated with the credentials.
Prowler will follow the same credentials search as [Google authentication libraries](https://cloud.google.com/docs/authentication/application-default-credentials#search_order):
1. [GOOGLE_APPLICATION_CREDENTIALS environment variable](https://cloud.google.com/docs/authentication/application-default-credentials#GAC)
2. [User credentials set up by using the Google Cloud CLI](https://cloud.google.com/docs/authentication/application-default-credentials#personal)
3. [The attached service account, returned by the metadata server](https://cloud.google.com/docs/authentication/application-default-credentials#attached-sa)
Those credentials must be associated to a user or service account with proper permissions to do all checks. To make sure, add the `Viewer` role to the member associated with the credentials.
## Impersonate Service Account
If you want to impersonate a GCP service account, you can use the `--impersonate-service-account` argument:
```console
prowler gcp --impersonate-service-account <service-account-email>
```
This argument will use the default credentials to impersonate the service account provided.
## Service APIs
Prowler will use the Google Cloud APIs to get the information needed to perform the checks. Make sure that the following APIs are enabled in the project:
- apikeys.googleapis.com
- artifactregistry.googleapis.com
- bigquery.googleapis.com
- sqladmin.googleapis.com
- storage.googleapis.com
- compute.googleapis.com
- dataproc.googleapis.com
- dns.googleapis.com
- containerregistry.googleapis.com
- container.googleapis.com
- iam.googleapis.com
- cloudkms.googleapis.com
- logging.googleapis.com
You can enable them automatically using our script [enable_apis_in_projects.sh](https://github.com/prowler-cloud/prowler/blob/master/contrib/gcp/enable_apis_in_projects.sh)