[ aws . lambda ]

create-alias

Description

Creates an alias for a Lambda function version. Use aliases to provide clients with a function identifier that you can update to invoke a different version.

You can also map an alias to split invocation requests between two versions. Use the RoutingConfig parameter to specify a second version and the percentage of invocation requests that it receives.

See also: AWS API Documentation

See ‘aws help’ for descriptions of global parameters.

Synopsis

  create-alias
--function-name <value>
--name <value>
--function-version <value>
[--description <value>]
[--routing-config <value>]
[--cli-input-json | --cli-input-yaml]
[--generate-cli-skeleton <value>]

Options

--function-name (string)

The name of the Lambda function.

Name formats

• Function name - MyFunction .

• Function ARN - arn:aws:lambda:us-west-2:123456789012:function:MyFunction .

• Partial ARN - 123456789012:function:MyFunction .

The length constraint applies only to the full ARN. If you specify only the function name, it is limited to 64 characters in length.

--name (string)

The name of the alias.

--function-version (string)

The function version that the alias invokes.

--description (string)

A description of the alias.

--routing-config (structure)

The routing configuration of the alias.

AdditionalVersionWeights -> (map)

The second version, and the percentage of traffic that’s routed to it.

key -> (string)

value -> (double)

Shorthand Syntax:

AdditionalVersionWeights={KeyName1=double,KeyName2=double}

JSON Syntax:

{
  "AdditionalVersionWeights": {"string": double
    ...}
}

--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.

See ‘aws help’ for descriptions of global parameters.

Examples

To create an alias for a Lambda function

The following create-alias example creates an alias named LIVE that points to version 1 of the my-function Lambda function.

aws lambda create-alias \
    --function-name my-function \
    --description "alias for live version of function" \
    --function-version 1 \
    --name LIVE

Output:

{
    "FunctionVersion": "1",
    "Name": "LIVE",
    "AliasArn": "arn:aws:lambda:us-west-2:123456789012:function:my-function:LIVE",
    "RevisionId": "873282ed-4cd3-4dc8-a069-d0c647e470c6",
    "Description": "alias for live version of function"
}

For more information, see Configuring AWS Lambda Function Aliases in the AWS Lambda Developer Guide.

Output

AliasArn -> (string)

The Amazon Resource Name (ARN) of the alias.

Name -> (string)

The name of the alias.

FunctionVersion -> (string)

The function version that the alias invokes.

Description -> (string)

A description of the alias.

RoutingConfig -> (structure)

The routing configuration of the alias.

AdditionalVersionWeights -> (map)

The second version, and the percentage of traffic that’s routed to it.

key -> (string)

value -> (double)

RevisionId -> (string)

A unique identifier that changes when you update the alias.