update-assume-role-policy¶

Description¶

Updates the policy that grants an IAM entity permission to assume a role. This is typically referred to as the “role trust policy”. For more information about roles, see Using roles to delegate permissions and federate identities .

Synopsis¶

  update-assume-role-policy
--role-name <value>
--policy-document <value>
[--cli-input-json | --cli-input-yaml]
[--generate-cli-skeleton <value>]

Options¶

--role-name (string)

The name of the role to update with the new policy.

This parameter allows (through its regex pattern ) a string of characters consisting of upper and lowercase alphanumeric characters with no spaces. You can also include any of the following characters: _+=,.@-

--policy-document (string)

The policy that grants an entity permission to assume the role.

You must provide policies in JSON format in IAM. However, for CloudFormation templates formatted in YAML, you can provide the policy in JSON or YAML format. CloudFormation always converts a YAML policy to JSON format before submitting it to IAM.

The regex pattern used to validate this parameter is a string of characters consisting of the following:

Any printable ASCII character ranging from the space character (\u0020 ) through the end of the ASCII character range

The printable characters in the Basic Latin and Latin-1 Supplement character set (through \u00FF )

The special characters tab (\u0009 ), line feed (\u000A ), and carriage return (\u000D )

--cli-input-json | --cli-input-yaml (string) Reads arguments from the JSON string provided. The JSON string follows the format provided by --generate-cli-skeleton. If other arguments are provided on the command line, those values will override the JSON-provided values. It is not possible to pass arbitrary binary values using a JSON-provided value as the string will be taken literally. This may not be specified along with --cli-input-yaml.

--generate-cli-skeleton (string) Prints a JSON skeleton to standard output without sending an API request. If provided with no value or the value input, prints a sample input JSON that can be used as an argument for --cli-input-json. Similarly, if provided yaml-input it will print a sample input YAML that can be used with --cli-input-yaml. If provided with the value output, it validates the command inputs and returns a sample output JSON for that command. The generated JSON skeleton is not stable between versions of the AWS CLI and there are no backwards compatibility guarantees in the JSON skeleton generated.

See ‘aws help’ for descriptions of global parameters.

Examples¶

Note

To use the following examples, you must have the AWS CLI installed and configured. See the Getting started guide in the AWS CLI User Guide for more information.

Unless otherwise stated, all examples have unix-like quotation rules. These examples will need to be adapted to your terminal’s quoting rules. See Using quotation marks with strings in the AWS CLI User Guide .

To update the trust policy for an IAM role

The following update-assume-role-policy command updates the trust policy for the role named Test-Role:

aws iam update-assume-role-policy --role-name Test-Role --policy-document file://Test-Role-Trust-Policy.json

The trust policy is defined as a JSON document in the Test-Role-Trust-Policy.json file. (The file name and extension do not have significance.) The trust policy must specify a principal.

To update the permissions policy for a role, use the put-role-policy command.

For more information, see Creating a Role in the Using IAM guide.

Output¶

None

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