2018-07-25 02:02:27 +00:00
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---
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2020-01-18 00:18:09 +00:00
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layout: docs
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page_title: Vault Agent Auto-Auth GCP Method
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description: GCP Method for Vault Agent Auto-Auth
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2018-07-25 02:02:27 +00:00
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---
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2020-01-18 00:18:09 +00:00
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# Vault Agent Auto-Auth GCP Method
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The `gcp` method performs authentication against the [GCP Auth
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method](/docs/auth/gcp). Both `gce` and `iam`
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authentication types are supported.
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## Credentials
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Vault will use the GCP SDK's normal credential chain behavior. You can set a
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static `credentials` value, but it is usually not needed. If running on GCE
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using Application Default Credentials, you may need to specify the service
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account and project since ADC does not provide metadata used to automatically
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determine these.
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## Configuration
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- `type` `(string: required)` - The type of authentication; must be `gce` or `iam`
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- `role` `(string: required)` - The role to authenticate against on Vault
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- `credentials` `(string: optional)` - When using static credentials, the
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contents of the JSON credentials file
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- `service_account` `(string: optional)` - The service account to use, if it
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cannot be automatically determined
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- `jwt_exp` `(string or int: optional)` - The number of minutes a generated JWT
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should be valid for when using the `iam` method; defaults to 15 minutes
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