Three different resources help you manage your IAM policy for Cloud Storage Bucket. Each of these resources serves a different use case:
google_storage_bucket_iam_policy
: Authoritative. Sets the IAM policy for the bucket and replaces any existing policy already attached.google_storage_bucket_iam_binding
: Authoritative for a given role. Updates the IAM policy to grant a role to a list of members. Other roles within the IAM policy for the bucket are preserved.google_storage_bucket_iam_member
: Non-authoritative. Updates the IAM policy to grant a role to a new member. Other members for the role for the bucket are preserved.A data source can be used to retrieve policy data in advent you do not need creation
google_storage_bucket_iam_policy
: Retrieves the IAM policy for the bucketdata "google_iam_policy" "admin" {
binding {
role = "roles/storage.admin"
members = [
"user:jane@example.com",
]
}
}
resource "google_storage_bucket_iam_policy" "policy" {
bucket = google_storage_bucket.default.name
policy_data = data.google_iam_policy.admin.policy_data
}
With IAM Conditions:
data "google_iam_policy" "admin" {
binding {
role = "roles/storage.admin"
members = [
"user:jane@example.com",
]
condition {
title = "expires_after_2019_12_31"
description = "Expiring at midnight of 2019-12-31"
expression = "request.time < timestamp(\"2020-01-01T00:00:00Z\")"
}
}
}
resource "google_storage_bucket_iam_policy" "policy" {
bucket = google_storage_bucket.default.name
policy_data = data.google_iam_policy.admin.policy_data
}
resource "google_storage_bucket_iam_binding" "binding" {
bucket = google_storage_bucket.default.name
role = "roles/storage.admin"
members = [
"user:jane@example.com",
]
}
With IAM Conditions:
resource "google_storage_bucket_iam_binding" "binding" {
bucket = google_storage_bucket.default.name
role = "roles/storage.admin"
members = [
"user:jane@example.com",
]
condition {
title = "expires_after_2019_12_31"
description = "Expiring at midnight of 2019-12-31"
expression = "request.time < timestamp(\"2020-01-01T00:00:00Z\")"
}
}
resource "google_storage_bucket_iam_member" "member" {
bucket = google_storage_bucket.default.name
role = "roles/storage.admin"
member = "user:jane@example.com"
}
With IAM Conditions:
resource "google_storage_bucket_iam_member" "member" {
bucket = google_storage_bucket.default.name
role = "roles/storage.admin"
member = "user:jane@example.com"
condition {
title = "expires_after_2019_12_31"
description = "Expiring at midnight of 2019-12-31"
expression = "request.time < timestamp(\"2020-01-01T00:00:00Z\")"
}
}
The following arguments are supported:
bucket
- (Required) Used to find the parent resource to bind the IAM policy to
member/members
- (Required) Identities that will be granted the privilege in role
.
Each entry can have one of the following values:
role
- (Required) The role that should be applied. Only one
google_storage_bucket_iam_binding
can be used per role. Note that custom roles must be of the format
[projects|organizations]/{parent-name}/roles/{role-name}
.
policy_data
- (Required only by google_storage_bucket_iam_policy
) The policy data generated by
a google_iam_policy
data source.
condition
- (Optional) An IAM Condition for a given binding.
Structure is documented below.
The condition
block supports:
expression
- (Required) Textual representation of an expression in Common Expression Language syntax.
title
- (Required) A title for the expression, i.e. a short string describing its purpose.
description
- (Optional) An optional description of the expression. This is a longer text which describes the expression, e.g. when hovered over it in a UI.
In addition to the arguments listed above, the following computed attributes are exported:
etag
- (Computed) The etag of the IAM policy.For all import syntaxes, the "resource in question" can take any of the following forms:
Any variables not passed in the import command will be taken from the provider configuration.
Cloud Storage bucket IAM resources can be imported using the resource identifiers, role, and member.
IAM member imports use space-delimited identifiers: the resource in question, the role, and the member identity, e.g.
$ terraform import google_storage_bucket_iam_member.editor "b/{{bucket}} roles/storage.objectViewer user:jane@example.com"
IAM binding imports use space-delimited identifiers: the resource in question and the role, e.g.
$ terraform import google_storage_bucket_iam_binding.editor "b/{{bucket}} roles/storage.objectViewer"
IAM policy imports use the identifier of the resource in question, e.g.
$ terraform import google_storage_bucket_iam_policy.editor b/{{bucket}}
This resource supports User Project Overrides.