Papéis de IAM para o Cloud Storage

Neste documento, você encontra informações sobre papéis e permissões do Identity and Access Management (IAM, na sigla em inglês) do Cloud Storage.

Papéis predefinidos

Na tabela a seguir, descrevemos os papéis de gerenciamento de identidade e acesso (IAM) associados ao Cloud Storage e listamos as permissões contidas em cada papel. Salvo indicação em contrário, esses papéis podem ser aplicados a projetos, buckets ou pastas gerenciadas. No entanto, é possível conceder papéis legados apenas a buckets individuais.

Para saber como controlar o acesso a buckets, consulte Usar permissões do IAM. Para saber como controlar o acesso a pastas gerenciadas, consulte Usar o IAM para pastas gerenciadas.

Role Permissions

(roles/storage.admin)

Grants full control of objects and buckets.

When applied to an individual bucket, control applies only to the specified bucket and objects within the bucket.

Lowest-level resources where you can grant this role:

  • Bucket

cloudkms.keyHandles.*

  • cloudkms.keyHandles.create
  • cloudkms.keyHandles.get
  • cloudkms.keyHandles.list

cloudkms.operations.get

cloudkms.projects.showEffectiveAutokeyConfig

firebase.projects.get

orgpolicy.policy.get

recommender.iamPolicyInsights.*

  • recommender.iamPolicyInsights.get
  • recommender.iamPolicyInsights.list
  • recommender.iamPolicyInsights.update

recommender.iamPolicyRecommendations.*

  • recommender.iamPolicyRecommendations.get
  • recommender.iamPolicyRecommendations.list
  • recommender.iamPolicyRecommendations.update

recommender.storageBucketSoftDeleteInsights.*

  • recommender.storageBucketSoftDeleteInsights.get
  • recommender.storageBucketSoftDeleteInsights.list
  • recommender.storageBucketSoftDeleteInsights.update

recommender.storageBucketSoftDeleteRecommendations.*

  • recommender.storageBucketSoftDeleteRecommendations.get
  • recommender.storageBucketSoftDeleteRecommendations.list
  • recommender.storageBucketSoftDeleteRecommendations.update

resourcemanager.hierarchyNodes.listEffectiveTags

resourcemanager.projects.get

resourcemanager.projects.list

storage.anywhereCaches.*

  • storage.anywhereCaches.create
  • storage.anywhereCaches.disable
  • storage.anywhereCaches.get
  • storage.anywhereCaches.list
  • storage.anywhereCaches.pause
  • storage.anywhereCaches.resume
  • storage.anywhereCaches.update

storage.bucketOperations.*

  • storage.bucketOperations.cancel
  • storage.bucketOperations.get
  • storage.bucketOperations.list

storage.buckets.*

  • storage.buckets.create
  • storage.buckets.createTagBinding
  • storage.buckets.delete
  • storage.buckets.deleteTagBinding
  • storage.buckets.enableObjectRetention
  • storage.buckets.get
  • storage.buckets.getIamPolicy
  • storage.buckets.getIpFilter
  • storage.buckets.getObjectInsights
  • storage.buckets.list
  • storage.buckets.listEffectiveTags
  • storage.buckets.listTagBindings
  • storage.buckets.relocate
  • storage.buckets.restore
  • storage.buckets.setIamPolicy
  • storage.buckets.setIpFilter
  • storage.buckets.update

storage.folders.*

  • storage.folders.create
  • storage.folders.delete
  • storage.folders.get
  • storage.folders.list
  • storage.folders.rename

storage.intelligenceConfigs.*

  • storage.intelligenceConfigs.get
  • storage.intelligenceConfigs.update

storage.managedFolders.*

  • storage.managedFolders.create
  • storage.managedFolders.delete
  • storage.managedFolders.get
  • storage.managedFolders.getIamPolicy
  • storage.managedFolders.list
  • storage.managedFolders.setIamPolicy

storage.multipartUploads.*

  • storage.multipartUploads.abort
  • storage.multipartUploads.create
  • storage.multipartUploads.list
  • storage.multipartUploads.listParts

storage.objects.*

  • storage.objects.create
  • storage.objects.delete
  • storage.objects.get
  • storage.objects.getIamPolicy
  • storage.objects.list
  • storage.objects.move
  • storage.objects.overrideUnlockedRetention
  • storage.objects.restore
  • storage.objects.setIamPolicy
  • storage.objects.setRetention
  • storage.objects.update

(roles/storage.bucketViewer)

Grants permission to view buckets and their metadata, excluding IAM policies.

storage.buckets.get

storage.buckets.list

(roles/storage.expressModeServiceInput)

Grants permission to Express Mode service accounts at a managed folder so they can create objects but not read them on input folders.

storage.objects.create

storage.objects.delete

storage.objects.list

storage.objects.update

(roles/storage.expressModeServiceOutput)

Grants permission to EasyGCP service accounts at a managed folder so they can read objects but not write them on output folders.

storage.objects.delete

storage.objects.get

storage.objects.list

(roles/storage.expressModeUserAccess)

Grants permission to Express Mode accounts at the project level so they can read, list, create and delete any object in any of their buckets in Express Mode.

orgpolicy.policy.get

storage.buckets.get

storage.buckets.list

storage.multipartUploads.*

  • storage.multipartUploads.abort
  • storage.multipartUploads.create
  • storage.multipartUploads.list
  • storage.multipartUploads.listParts

storage.objects.create

storage.objects.delete

storage.objects.get

storage.objects.list

storage.objects.restore

storage.objects.update

(roles/storage.folderAdmin)

Grants full control over folders and objects, including listing, creating, viewing, and deleting objects.

orgpolicy.policy.get

resourcemanager.projects.get

resourcemanager.projects.list

storage.folders.*

  • storage.folders.create
  • storage.folders.delete
  • storage.folders.get
  • storage.folders.list
  • storage.folders.rename

storage.managedFolders.*

  • storage.managedFolders.create
  • storage.managedFolders.delete
  • storage.managedFolders.get
  • storage.managedFolders.getIamPolicy
  • storage.managedFolders.list
  • storage.managedFolders.setIamPolicy

storage.multipartUploads.*

  • storage.multipartUploads.abort
  • storage.multipartUploads.create
  • storage.multipartUploads.list
  • storage.multipartUploads.listParts

storage.objects.*

  • storage.objects.create
  • storage.objects.delete
  • storage.objects.get
  • storage.objects.getIamPolicy
  • storage.objects.list
  • storage.objects.move
  • storage.objects.overrideUnlockedRetention
  • storage.objects.restore
  • storage.objects.setIamPolicy
  • storage.objects.setRetention
  • storage.objects.update

(roles/storage.hmacKeyAdmin)

Full control of Cloud Storage HMAC keys.

firebase.projects.get

orgpolicy.policy.get

resourcemanager.projects.get

resourcemanager.projects.list

storage.hmacKeys.*

  • storage.hmacKeys.create
  • storage.hmacKeys.delete
  • storage.hmacKeys.get
  • storage.hmacKeys.list
  • storage.hmacKeys.update

(roles/storage.insightsCollectorService)

Read-only access to Cloud Storage Inventory metadata for Storage Insights.

resourcemanager.projects.get

resourcemanager.projects.list

storage.buckets.get

storage.buckets.getObjectInsights

(roles/storage.legacyBucketOwner)

Grants permission to create, overwrite, and delete objects; list objects in a bucket and read object metadata, excluding allow policies, when listing; and read and edit bucket metadata, including allow policies.

Use of this role is also reflected in the bucket's ACLs. For more information, see IAM relation to ACLs.

Lowest-level resources where you can grant this role:

  • Bucket

storage.anywhereCaches.*

  • storage.anywhereCaches.create
  • storage.anywhereCaches.disable
  • storage.anywhereCaches.get
  • storage.anywhereCaches.list
  • storage.anywhereCaches.pause
  • storage.anywhereCaches.resume
  • storage.anywhereCaches.update

storage.bucketOperations.*

  • storage.bucketOperations.cancel
  • storage.bucketOperations.get
  • storage.bucketOperations.list

storage.buckets.createTagBinding

storage.buckets.deleteTagBinding

storage.buckets.enableObjectRetention

storage.buckets.get

storage.buckets.getIamPolicy

storage.buckets.getIpFilter

storage.buckets.listEffectiveTags

storage.buckets.listTagBindings

storage.buckets.relocate

storage.buckets.restore

storage.buckets.setIamPolicy

storage.buckets.setIpFilter

storage.buckets.update

storage.folders.*

  • storage.folders.create
  • storage.folders.delete
  • storage.folders.get
  • storage.folders.list
  • storage.folders.rename

storage.managedFolders.*

  • storage.managedFolders.create
  • storage.managedFolders.delete
  • storage.managedFolders.get
  • storage.managedFolders.getIamPolicy
  • storage.managedFolders.list
  • storage.managedFolders.setIamPolicy

storage.multipartUploads.*

  • storage.multipartUploads.abort
  • storage.multipartUploads.create
  • storage.multipartUploads.list
  • storage.multipartUploads.listParts

storage.objects.create

storage.objects.delete

storage.objects.list

storage.objects.restore

storage.objects.setRetention

(roles/storage.legacyBucketReader)

Grants permission to list a bucket's contents and read bucket metadata, excluding allow policies. Also grants permission to read object metadata, excluding allow policies, when listing objects.

Use of this role is also reflected in the bucket's ACLs. For more information, see IAM relation to ACLs.

Lowest-level resources where you can grant this role:

  • Bucket

storage.buckets.get

storage.folders.get

storage.folders.list

storage.managedFolders.get

storage.managedFolders.list

storage.multipartUploads.list

storage.objects.list

(roles/storage.legacyBucketWriter)

Grants permission to create, overwrite, and delete objects; list objects in a bucket and read object metadata, excluding allow policies, when listing; and read bucket metadata, excluding allow policies.

Use of this role is also reflected in the bucket's ACLs. For more information, see IAM relation to ACLs.

Lowest-level resources where you can grant this role:

  • Bucket

storage.buckets.get

storage.folders.*

  • storage.folders.create
  • storage.folders.delete
  • storage.folders.get
  • storage.folders.list
  • storage.folders.rename

storage.managedFolders.create

storage.managedFolders.delete

storage.managedFolders.get

storage.managedFolders.list

storage.multipartUploads.*

  • storage.multipartUploads.abort
  • storage.multipartUploads.create
  • storage.multipartUploads.list
  • storage.multipartUploads.listParts

storage.objects.create

storage.objects.delete

storage.objects.list

storage.objects.restore

storage.objects.setRetention

(roles/storage.legacyObjectOwner)

Grants permission to view and edit objects and their metadata, including ACLs.

Lowest-level resources where you can grant this role:

  • Bucket

storage.objects.get

storage.objects.getIamPolicy

storage.objects.overrideUnlockedRetention

storage.objects.setIamPolicy

storage.objects.setRetention

storage.objects.update

(roles/storage.legacyObjectReader)

Grants permission to view objects and their metadata, excluding ACLs.

Lowest-level resources where you can grant this role:

  • Bucket

storage.objects.get

(roles/storage.objectAdmin)

Grants full control of objects, including listing, creating, viewing, and deleting objects.

Lowest-level resources where you can grant this role:

  • Bucket

orgpolicy.policy.get

resourcemanager.projects.get

resourcemanager.projects.list

storage.folders.*

  • storage.folders.create
  • storage.folders.delete
  • storage.folders.get
  • storage.folders.list
  • storage.folders.rename

storage.managedFolders.create

storage.managedFolders.delete

storage.managedFolders.get

storage.managedFolders.list

storage.multipartUploads.*

  • storage.multipartUploads.abort
  • storage.multipartUploads.create
  • storage.multipartUploads.list
  • storage.multipartUploads.listParts

storage.objects.*

  • storage.objects.create
  • storage.objects.delete
  • storage.objects.get
  • storage.objects.getIamPolicy
  • storage.objects.list
  • storage.objects.move
  • storage.objects.overrideUnlockedRetention
  • storage.objects.restore
  • storage.objects.setIamPolicy
  • storage.objects.setRetention
  • storage.objects.update

(roles/storage.objectCreator)

Allows users to create objects. Does not give permission to view, delete, or overwrite objects.

Lowest-level resources where you can grant this role:

  • Bucket

orgpolicy.policy.get

resourcemanager.projects.get

resourcemanager.projects.list

storage.folders.create

storage.managedFolders.create

storage.multipartUploads.abort

storage.multipartUploads.create

storage.multipartUploads.listParts

storage.objects.create

(roles/storage.objectUser)

Access to create, read, update and delete objects and multipart uploads in GCS.

orgpolicy.policy.get

resourcemanager.projects.get

resourcemanager.projects.list

storage.folders.*

  • storage.folders.create
  • storage.folders.delete
  • storage.folders.get
  • storage.folders.list
  • storage.folders.rename

storage.managedFolders.create

storage.managedFolders.delete

storage.managedFolders.get

storage.managedFolders.list

storage.multipartUploads.*

  • storage.multipartUploads.abort
  • storage.multipartUploads.create
  • storage.multipartUploads.list
  • storage.multipartUploads.listParts

storage.objects.create

storage.objects.delete

storage.objects.get

storage.objects.list

storage.objects.move

storage.objects.restore

storage.objects.update

(roles/storage.objectViewer)

Grants access to view objects and their metadata, excluding ACLs. Can also list the objects in a bucket.

Lowest-level resources where you can grant this role:

  • Bucket

resourcemanager.projects.get

resourcemanager.projects.list

storage.folders.get

storage.folders.list

storage.managedFolders.get

storage.managedFolders.list

storage.objects.get

storage.objects.list

Papéis predefinidos do Storage Insights

A tabela a seguir descreve os papéis do IAM associados ao Storage Insights e lista as permissões contidas em cada papel.

Role Permissions

(roles/storageinsights.admin)

Full access to Storage Insights resources.

resourcemanager.projects.get

resourcemanager.projects.list

storageinsights.*

  • storageinsights.datasetConfigs.create
  • storageinsights.datasetConfigs.delete
  • storageinsights.datasetConfigs.get
  • storageinsights.datasetConfigs.linkDataset
  • storageinsights.datasetConfigs.list
  • storageinsights.datasetConfigs.unlinkDataset
  • storageinsights.datasetConfigs.update
  • storageinsights.locations.get
  • storageinsights.locations.list
  • storageinsights.operations.cancel
  • storageinsights.operations.delete
  • storageinsights.operations.get
  • storageinsights.operations.list
  • storageinsights.reportConfigs.create
  • storageinsights.reportConfigs.delete
  • storageinsights.reportConfigs.get
  • storageinsights.reportConfigs.list
  • storageinsights.reportConfigs.update
  • storageinsights.reportDetails.get
  • storageinsights.reportDetails.list

(roles/storageinsights.analyst)

Data access to Storage Insights.

resourcemanager.projects.get

resourcemanager.projects.list

storageinsights.datasetConfigs.get

storageinsights.datasetConfigs.linkDataset

storageinsights.datasetConfigs.list

storageinsights.datasetConfigs.unlinkDataset

storageinsights.locations.*

  • storageinsights.locations.get
  • storageinsights.locations.list

storageinsights.operations.get

storageinsights.operations.list

storageinsights.reportConfigs.get

storageinsights.reportConfigs.list

storageinsights.reportDetails.*

  • storageinsights.reportDetails.get
  • storageinsights.reportDetails.list

(roles/storageinsights.serviceAgent)

Permissions for Insights to write reports into customer project

bigquery.datasets.create

serviceusage.services.use

storageinsights.reportDetails.list

(roles/storageinsights.viewer)

Read-only access to Storage Insights resources.

resourcemanager.projects.get

resourcemanager.projects.list

storageinsights.datasetConfigs.get

storageinsights.datasetConfigs.list

storageinsights.locations.*

  • storageinsights.locations.get
  • storageinsights.locations.list

storageinsights.operations.get

storageinsights.operations.list

storageinsights.reportConfigs.get

storageinsights.reportConfigs.list

storageinsights.reportDetails.*

  • storageinsights.reportDetails.get
  • storageinsights.reportDetails.list

Papéis básicos

Papéis básicos são aqueles que existiam antes do IAM. Eles têm características únicas:

  • Esses papéis só podem ser concedidos para um projeto inteiro, não para buckets individuais dentro do projeto. Assim como outros papéis que você concede em um projeto, os papéis básicos se aplicam a todos os buckets e objetos do projeto.

  • Os papéis básicos contêm permissões extras para outros serviços do Google Cloud que não são abordados nesta seção. Consulte papéis básicos para uma discussão geral sobre as permissões que eles concedem.

  • Cada papel básico tem um valor de conveniência que permite usar o papel básico como se fosse um grupo. Quando usado dessa maneira, qualquer participante que tenha o papel básico é considerado parte do grupo. Todos no grupo recebem acesso adicional aos recursos com base no valor de conveniência.

    • Os valores de conveniência podem ser usados ao conceder papéis para buckets.

    • Os valores de conveniência podem ser usados ao definir ACLs em objetos.

  • Os papéis básicos não concedem intrinsecamente todo o acesso que os nomes sugerem aos recursos do Cloud Storage. Em vez disso, eles fornecem uma parte do acesso esperado intrinsecamente e o restante do acesso esperado usando valores de conveniência. Como os valores de conveniência podem ser adicionados ou removidos manualmente como qualquer outro participante do IAM, é possível revogar o acesso que os participantes esperavam ter.

    Para conhecer o acesso adicional que os participantes de papéis básicos normalmente recebem devido a esse comportamento, consulte comportamento modificável.

Permissões intrínsecas

A tabela a seguir descreve as permissões do Cloud Storage que estão sempre associadas a cada papel básico.

Papel Descrição Permissões do Cloud Storage
Leitor (roles/viewer) Concede permissão para listar buckets no projeto, visualizar metadados do buckets ao listar (excluindo ACLs) e listar e receber chaves HMAC no projeto. storage.buckets.getIpFilter
storage.buckets.list
storage.hmacKeys.get
storage.hmacKeys.list
Editor (roles/editor) Concede permissão para criar, listar e excluir buckets no projeto, visualizar metadados do bucket ao listar (excluindo ACLs) e controlar chaves HMAC no projeto. storage.buckets.create
storage.buckets.delete
storage.buckets.getIpFilter
storage.buckets.list
storage.hmacKeys.*
Proprietário (roles/owner)

Concede permissão para criar, listar e excluir buckets no projeto. ver metadados do bucket ao listar (excluindo ACLs); criar, excluir e listar vinculações de tags e controlar chaves HMAC no projeto; ativar, desativar, atualizar e receber a configuração do Storage Intelligence em um projeto, uma pasta ou uma organização.

No Google Cloud , normalmente os participantes com este papel podem realizar tarefas administrativas, como alterar papéis de participantes do projeto ou alterar o faturamento.

 storage.buckets.create
storage.buckets.delete
storage.buckets.list
storage.buckets.createTagBinding
storage.buckets.deleteTagBinding
storage.buckets.getIpFilter
storage.buckets.listEffectiveTags
storage.buckets.listTagBindings
storage.buckets.setIpFilter
storage.hmacKeys.*
storage.intelligenceConfigs.get
storage.intelligenceConfigs.update

Comportamento modificável

Os principais que receberam papéis básicos geralmente têm acesso adicional aos buckets e objetos de um projeto devido aos valores de conveniência. Quando um bucket é criado, os valores de conveniência recebem acesso específico no nível do bucket, mas é possível editar posteriormente as políticas do IAM com relação ao bucket e as ACLs de objeto para remover ou alterar esse acesso.

Quando você cria um bucket com acesso uniforme no nível do bucket ativado, o seguinte acesso é concedido por meio de valores de conveniência:

  • Os principais que receberam roles/viewer recebem os papéis roles/storage.legacyBucketReader e roles/storage.legacyObjectReader para o bucket.

  • Os principais que receberam roles/editor recebem os papéis roles/storage.legacyBucketOwner e roles/storage.legacyObjectOwner para o bucket.

  • Os principais que receberam roles/owner recebem os papéis roles/storage.legacyBucketOwner e roles/storage.legacyObjectOwner para o bucket.

Quando você cria um bucket sem acesso uniforme no nível do bucket ativado, o seguinte acesso é concedido por meio de valores de conveniência:

  • Os principais que receberam roles/viewer recebem o papel roles/storage.legacyBucketReader para o bucket.

  • Os principais que receberam roles/editor recebem o papel roles/storage.legacyBucketOwner para o bucket.

  • Os principais que receberam roles/owner recebem o papel roles/storage.legacyBucketOwner para o bucket.

  • Além disso, o bucket tem uma lista de controle de acesso (ACL) de objeto padrão. Essa ACL padrão normalmente é aplicada a novos objetos no bucket e, geralmente, concede acesso adicional a valores de conveniência.

Papéis personalizados

É possível definir papéis que contêm os pacotes de permissões que você especificar. Para isso, o IAM oferece papéis personalizados.

A seguir