gcloud beta spanner instances add-iam-policy-binding

NAME: gcloud beta spanner instances add-iam-policy-binding - add IAM policy binding to a Cloud Spanner instance
SYNOPSIS: gcloud beta spanner instances add-iam-policy-binding [ INSTANCE ] --member = PRINCIPAL --role = ROLE [ --condition =[ KEY = VALUE , …] | --condition-from-file = PATH_TO_FILE ] [ GCLOUD_WIDE_FLAG … ]
DESCRIPTION: (BETA) Add an IAM policy binding to a Cloud Spanner instance. One binding consists of a member, a role, and an optional condition.
EXAMPLES: To add an IAM policy binding for the role of 'roles/editor' for the user 'test-user@gmail.com' with instance 'my-instance', run:
gcloud beta spanner instances add-iam-policy-binding my-instance --member = 'user:test-user@gmail.com' --role = 'roles/editor'

To add an IAM policy binding which expires at the end of the year 2018 for the role of 'roles/spanner.admin' and the user 'test-user@gmail.com' with instance 'my-instance', run:

gcloud beta spanner instances add-iam-policy-binding my-instance --member = 'user:test-user@gmail.com' --role = 'roles/spanner.admin' --condition = 'expression=request.time < timestamp("2019-01-01T00:00:00Z"),title=expires_end_of_2018,descrip\ tion=Expires at midnight on 2018-12-31'

See https://cloud.google.com/iam/docs/managing-policies for details of policy role and member types.
POSITIONAL ARGUMENTS: Instance resource - The Cloud Spanner instance to which to add the IAM policy binding. This represents a Cloud resource. (NOTE) Some attributes are not given arguments in this group but can be set in other ways.
To set the project attribute:

provide the argument instance on the command line with a fully specified name;

set the property spanner/instance with a fully specified name;

provide the argument --project on the command line;

set the property core/project .

[ INSTANCE ]

ID of the instance or fully qualified identifier for the instance.
To set the instance attribute:

provide the argument instance on the command line;

set the property spanner/instance .
REQUIRED FLAGS: --member = PRINCIPAL

The principal to add the binding for. Should be of the form user|group|serviceAccount:email or domain:domain .
Examples: user:test-user@gmail.com , group:admins@example.com , serviceAccount:test123@example.domain.com , or domain:example.domain.com .

Some resources also accept the following special values:

allUsers - Special identifier that represents anyone who is on the internet, with or without a Google account.

allAuthenticatedUsers - Special identifier that represents anyone who is authenticated with a Google account or a service account.

--role = ROLE

Role name to assign to the principal. The role name is the complete path of a predefined role, such as roles/logging.viewer , or the role ID for a custom role, such as organizations/{ORGANIZATION_ID}/roles/logging.viewer .
OPTIONAL FLAGS: At most one of these can be specified:

--condition =[ KEY = VALUE ,…]

A condition to include in the binding. When the condition is explicitly specified as None ( --condition=None ), a binding without a condition is added. When the condition is specified and is not None , --role cannot be a basic role. Basic roles are roles/editor , roles/owner , and roles/viewer . For more on conditions, refer to the conditions overview guide: https://cloud.google.com/iam/docs/conditions-overview
When using the --condition flag, include the following key-value pairs:

expression

(Required) Condition expression that evaluates to True or False. This uses a subset of Common Expression Language syntax.
If the condition expression includes a comma, use a different delimiter to separate the key-value pairs. Specify the delimiter before listing the key-value pairs. For example, to specify a colon ( : ) as the delimiter, do the following: --condition=^:^title=TITLE:expression=EXPRESSION . For more information, see https://cloud.google.com/sdk/gcloud/reference/topic/escaping .

title

(Required) A short string describing the purpose of the expression.

description

(Optional) Additional description for the expression.

--condition-from-file = PATH_TO_FILE

Path to a local JSON or YAML file that defines the condition. To see available fields, see the help for --condition . Use a full or relative path to a local file containing the value of condition.
GCLOUD WIDE FLAGS: These flags are available to all commands: --access-token-file , --account , --billing-project , --configuration , --flags-file , --flatten , --format , --help , --impersonate-service-account , --log-http , --project , --quiet , --trace-token , --user-output-enabled , --verbosity .
Run $ gcloud help for details.
API REFERENCE: This command uses the spanner/v1 API. The full documentation for this API can be found at: https://cloud.google.com/spanner/
NOTES: This command is currently in beta and might change without notice. These variants are also available:
gcloud spanner instances add-iam-policy-binding

gcloud alpha spanner instances add-iam-policy-binding

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gcloud beta spanner instances add-iam-policy-binding