get-parameter-history¶

Description¶

Retrieves the history of all changes to a parameter.

Warning

If you change the KMS key alias for the KMS key used to encrypt a parameter, then you must also update the key alias the parameter uses to reference KMS. Otherwise, GetParameterHistory retrieves whatever the original key alias was referencing.

Synopsis¶

  get-parameter-history
--name <value>
[--with-decryption | --no-with-decryption]
[--cli-input-json | --cli-input-yaml]
[--starting-token <value>]
[--page-size <value>]
[--max-items <value>]
[--generate-cli-skeleton <value>]
[--debug]
[--endpoint-url <value>]
[--no-verify-ssl]
[--no-paginate]
[--output <value>]
[--query <value>]
[--profile <value>]
[--region <value>]
[--version <value>]
[--color <value>]
[--no-sign-request]
[--ca-bundle <value>]
[--cli-read-timeout <value>]
[--cli-connect-timeout <value>]
[--cli-binary-format <value>]
[--no-cli-pager]
[--cli-auto-prompt]
[--no-cli-auto-prompt]

Options¶

--name (string)

The name or Amazon Resource Name (ARN) of the parameter for which you want to review history. For parameters shared with you from another account, you must use the full ARN.

--with-decryption | --no-with-decryption (boolean)

Return decrypted values for secure string parameters. This flag is ignored for String and StringList parameter types.

--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.

--starting-token (string)

A token to specify where to start paginating. This is the NextToken from a previously truncated response.

For usage examples, see Pagination in the AWS Command Line Interface User Guide .

--page-size (integer)

The size of each page to get in the AWS service call. This does not affect the number of items returned in the command’s output. Setting a smaller page size results in more calls to the AWS service, retrieving fewer items in each call. This can help prevent the AWS service calls from timing out.

For usage examples, see Pagination in the AWS Command Line Interface User Guide .

--max-items (integer)

The total number of items to return in the command’s output. If the total number of items available is more than the value specified, a NextToken is provided in the command’s output. To resume pagination, provide the NextToken value in the starting-token argument of a subsequent command. Do not use the NextToken response element directly outside of the AWS CLI.

For usage examples, see Pagination in the AWS Command Line Interface User Guide .

--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.

Global Options¶

--debug (boolean)

Turn on debug logging.

--endpoint-url (string)

Override command’s default URL with the given URL.

--no-verify-ssl (boolean)

By default, the AWS CLI uses SSL when communicating with AWS services. For each SSL connection, the AWS CLI will verify SSL certificates. This option overrides the default behavior of verifying SSL certificates.

--no-paginate (boolean)

Disable automatic pagination. If automatic pagination is disabled, the AWS CLI will only make one call, for the first page of results.

--output (string)

The formatting style for command output.

json
text
table
yaml
yaml-stream

--query (string)

A JMESPath query to use in filtering the response data.

--profile (string)

Use a specific profile from your credential file.

--region (string)

The region to use. Overrides config/env settings.

--version (string)

Display the version of this tool.

--color (string)

Turn on/off color output.

on
off
auto

--no-sign-request (boolean)

Do not sign requests. Credentials will not be loaded if this argument is provided.

--ca-bundle (string)

The CA certificate bundle to use when verifying SSL certificates. Overrides config/env settings.

--cli-read-timeout (int)

The maximum socket read time in seconds. If the value is set to 0, the socket read will be blocking and not timeout. The default value is 60 seconds.

--cli-connect-timeout (int)

The maximum socket connect time in seconds. If the value is set to 0, the socket connect will be blocking and not timeout. The default value is 60 seconds.

--cli-binary-format (string)

The formatting style to be used for binary blobs. The default format is base64. The base64 format expects binary blobs to be provided as a base64 encoded string. The raw-in-base64-out format preserves compatibility with AWS CLI V1 behavior and binary values must be passed literally. When providing contents from a file that map to a binary blob fileb:// will always be treated as binary and use the file contents directly regardless of the cli-binary-format setting. When using file:// the file contents will need to properly formatted for the configured cli-binary-format.

base64
raw-in-base64-out

--no-cli-pager (boolean)

Disable cli pager for output.

--cli-auto-prompt (boolean)

Automatically prompt for CLI input parameters.

--no-cli-auto-prompt (boolean)

Disable automatically prompt for CLI input 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 get a value history for a parameter

The following get-parameter-history example lists the history of changes for the specified parameter, including its value.

aws ssm get-parameter-history \
    --name "MyStringParameter"

Output:

{
    "Parameters": [
        {
            "Name": "MyStringParameter",
            "Type": "String",
            "LastModifiedDate": 1582154711.976,
            "LastModifiedUser": "arn:aws:iam::111222333444:user/Mary-Major",
            "Description": "This is the first version of my String parameter",
            "Value": "Veni",
            "Version": 1,
            "Labels": [],
            "Tier": "Standard",
            "Policies": []
        },
        {
            "Name": "MyStringParameter",
            "Type": "String",
            "LastModifiedDate": 1582156093.471,
            "LastModifiedUser": "arn:aws:iam::111222333444:user/Mary-Major",
            "Description": "This is the second version of my String parameter",
            "Value": "Vidi",
            "Version": 2,
            "Labels": [],
            "Tier": "Standard",
            "Policies": []
        },
        {
            "Name": "MyStringParameter",
            "Type": "String",
            "LastModifiedDate": 1582156117.545,
            "LastModifiedUser": "arn:aws:iam::111222333444:user/Mary-Major",
            "Description": "This is the third version of my String parameter",
            "Value": "Vici",
            "Version": 3,
            "Labels": [],
            "Tier": "Standard",
            "Policies": []
        }
    ]
}

For more information, see Working with parameter versions in the AWS Systems Manager User Guide.

Output¶

Parameters -> (list)

A list of parameters returned by the request.

(structure)

Information about parameter usage.

Name -> (string)

The name of the parameter.

Type -> (string)

The type of parameter used.

KeyId -> (string)

The alias of the Key Management Service (KMS) key used to encrypt the parameter. Applies to SecureString parameters only

LastModifiedDate -> (timestamp)

Date the parameter was last changed or updated.

LastModifiedUser -> (string)

Amazon Resource Name (ARN) of the Amazon Web Services user who last changed the parameter.

Description -> (string)

Information about the parameter.

Value -> (string)

The parameter value.

AllowedPattern -> (string)

Parameter names can include the following letters and symbols.

a-zA-Z0-9_.-

Version -> (long)

The parameter version.

Labels -> (list)

Labels assigned to the parameter version.

(string)

Tier -> (string)

The parameter tier.

Policies -> (list)

Information about the policies assigned to a parameter.

Assigning parameter policies in the Amazon Web Services Systems Manager User Guide .

(structure)

One or more policies assigned to a parameter.

PolicyText -> (string)

The JSON text of the policy.

PolicyType -> (string)

The type of policy. Parameter Store, a capability of Amazon Web Services Systems Manager, supports the following policy types: Expiration, ExpirationNotification, and NoChangeNotification.

PolicyStatus -> (string)

The status of the policy. Policies report the following statuses: Pending (the policy hasn’t been enforced or applied yet), Finished (the policy was applied), Failed (the policy wasn’t applied), or InProgress (the policy is being applied now).

DataType -> (string)

The data type of the parameter, such as text or aws:ec2:image . The default is text .

NextToken -> (string)

The token to use when requesting the next set of items. If there are no additional items to return, the string is empty.

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