[ aws . lambda ]

update-function-configuration

Description

Modify the version-specific settings of a Lambda function.

When you update a function, Lambda provisions an instance of the function and its supporting resources. If your function connects to a VPC, this process can take a minute. During this time, you can’t modify the function, but you can still invoke it. The LastUpdateStatus , LastUpdateStatusReason , and LastUpdateStatusReasonCode fields in the response from GetFunctionConfiguration indicate when the update is complete and the function is processing events with the new configuration. For more information, see Function States .

These settings can vary between versions of a function and are locked when you publish a version. You can’t modify the configuration of a published version, only the unpublished version.

To configure function concurrency, use PutFunctionConcurrency . To grant invoke permissions to an account or AWS service, use AddPermission .

See also: AWS API Documentation

See ‘aws help’ for descriptions of global parameters.

Synopsis

  update-function-configuration
--function-name <value>
[--role <value>]
[--handler <value>]
[--description <value>]
[--timeout <value>]
[--memory-size <value>]
[--vpc-config <value>]
[--environment <value>]
[--runtime <value>]
[--dead-letter-config <value>]
[--kms-key-arn <value>]
[--tracing-config <value>]
[--revision-id <value>]
[--layers <value>]
[--file-system-configs <value>]
[--cli-input-json | --cli-input-yaml]
[--generate-cli-skeleton <value>]
[--cli-auto-prompt <value>]

Options

--function-name (string)

The name of the Lambda function.

Name formats

• Function name - my-function .

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

• Partial ARN - 123456789012:function:my-function .

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

--role (string)

The Amazon Resource Name (ARN) of the function’s execution role.

--handler (string)

The name of the method within your code that Lambda calls to execute your function. The format includes the file name. It can also include namespaces and other qualifiers, depending on the runtime. For more information, see Programming Model .

--description (string)

A description of the function.

--timeout (integer)

The amount of time that Lambda allows a function to run before stopping it. The default is 3 seconds. The maximum allowed value is 900 seconds.

--memory-size (integer)

The amount of memory that your function has access to. Increasing the function’s memory also increases its CPU allocation. The default value is 128 MB. The value must be a multiple of 64 MB.

--vpc-config (structure)

For network connectivity to AWS resources in a VPC, specify a list of security groups and subnets in the VPC. When you connect a function to a VPC, it can only access resources and the internet through that VPC. For more information, see VPC Settings .

SubnetIds -> (list)

A list of VPC subnet IDs.

(string)

SecurityGroupIds -> (list)

A list of VPC security groups IDs.

(string)

Shorthand Syntax:

SubnetIds=string,string,SecurityGroupIds=string,string

JSON Syntax:

{
  "SubnetIds": ["string", ...],
  "SecurityGroupIds": ["string", ...]
}

--environment (structure)

Environment variables that are accessible from function code during execution.

Variables -> (map)

Environment variable key-value pairs.

key -> (string)

value -> (string)

Shorthand Syntax:

Variables={KeyName1=string,KeyName2=string}

JSON Syntax:

{
  "Variables": {"string": "string"
    ...}
}

--runtime (string)

The identifier of the function’s runtime .

Possible values:

• nodejs

• nodejs4.3

• nodejs6.10

• nodejs8.10

• nodejs10.x

• nodejs12.x

• java8

• java11

• python2.7

• python3.6

• python3.7

• python3.8

• dotnetcore1.0

• dotnetcore2.0

• dotnetcore2.1

• dotnetcore3.1

• nodejs4.3-edge

• go1.x

• ruby2.5

• ruby2.7

• provided

--dead-letter-config (structure)

A dead letter queue configuration that specifies the queue or topic where Lambda sends asynchronous events when they fail processing. For more information, see Dead Letter Queues .

TargetArn -> (string)

The Amazon Resource Name (ARN) of an Amazon SQS queue or Amazon SNS topic.

Shorthand Syntax:

TargetArn=string

JSON Syntax:

{
  "TargetArn": "string"
}

--kms-key-arn (string)

The ARN of the AWS Key Management Service (AWS KMS) key that’s used to encrypt your function’s environment variables. If it’s not provided, AWS Lambda uses a default service key.

--tracing-config (structure)

Set Mode to Active to sample and trace a subset of incoming requests with AWS X-Ray.

Mode -> (string)

The tracing mode.

Shorthand Syntax:

Mode=string

JSON Syntax:

{
  "Mode": "Active"|"PassThrough"
}

--revision-id (string)

Only update the function if the revision ID matches the ID that’s specified. Use this option to avoid modifying a function that has changed since you last read it.

--layers (list)

A list of function layers to add to the function’s execution environment. Specify each layer by its ARN, including the version.

(string)

Syntax:

"string" "string" ...

--file-system-configs (list)

Connection settings for an Amazon EFS file system.

(structure)

Details about the connection between a Lambda function and an Amazon EFS file system.

Arn -> (string)

The Amazon Resource Name (ARN) of the Amazon EFS access point that provides access to the file system.

LocalMountPath -> (string)

The path where the function can access the file system, starting with /mnt/ .

Shorthand Syntax:

Arn=string,LocalMountPath=string ...

JSON Syntax:

[
  {
    "Arn": "string",
    "LocalMountPath": "string"
  }
  ...
]

--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.

--cli-auto-prompt (boolean) Automatically prompt for CLI input parameters.

See ‘aws help’ for descriptions of global parameters.

Examples

To modify the configuration of a function

The following update-function-configuration example modifies the memory size to be 256 MB for the unpublished ($LATEST) version of the my-function function.

aws lambda update-function-configuration \
    --function-name  my-function \
    --memory-size 256

Output:

{
    "FunctionName": "my-function",
    "LastModified": "2019-09-26T20:28:40.438+0000",
    "RevisionId": "e52502d4-9320-4688-9cd6-152a6ab7490d",
    "MemorySize": 256,
    "Version": "$LATEST",
    "Role": "arn:aws:iam::123456789012:role/service-role/my-function-role-uy3l9qyq",
    "Timeout": 3,
    "Runtime": "nodejs10.x",
    "TracingConfig": {
        "Mode": "PassThrough"
    },
    "CodeSha256": "5tT2qgzYUHaqwR716pZ2dpkn/0J1FrzJmlKidWoaCgk=",
    "Description": "",
    "VpcConfig": {
        "SubnetIds": [],
        "VpcId": "",
        "SecurityGroupIds": []
    },
    "CodeSize": 304,
    "FunctionArn": "arn:aws:lambda:us-west-2:123456789012:function:my-function",
    "Handler": "index.handler"
}

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

Output

FunctionName -> (string)

The name of the function.

FunctionArn -> (string)

The function’s Amazon Resource Name (ARN).

Runtime -> (string)

The runtime environment for the Lambda function.

Role -> (string)

The function’s execution role.

Handler -> (string)

The function that Lambda calls to begin executing your function.

CodeSize -> (long)

The size of the function’s deployment package, in bytes.

Description -> (string)

The function’s description.

Timeout -> (integer)

The amount of time in seconds that Lambda allows a function to run before stopping it.

MemorySize -> (integer)

The memory that’s allocated to the function.

LastModified -> (string)

The date and time that the function was last updated, in ISO-8601 format (YYYY-MM-DDThh:mm:ss.sTZD).

CodeSha256 -> (string)

The SHA256 hash of the function’s deployment package.

Version -> (string)

The version of the Lambda function.

VpcConfig -> (structure)

The function’s networking configuration.

SubnetIds -> (list)

A list of VPC subnet IDs.

(string)

SecurityGroupIds -> (list)

A list of VPC security groups IDs.

(string)

VpcId -> (string)

The ID of the VPC.

DeadLetterConfig -> (structure)

The function’s dead letter queue.

TargetArn -> (string)

The Amazon Resource Name (ARN) of an Amazon SQS queue or Amazon SNS topic.

Environment -> (structure)

The function’s environment variables.

Variables -> (map)

Environment variable key-value pairs.

key -> (string)

value -> (string)

Error -> (structure)

Error messages for environment variables that couldn’t be applied.

ErrorCode -> (string)

The error code.

Message -> (string)

The error message.

KMSKeyArn -> (string)

The KMS key that’s used to encrypt the function’s environment variables. This key is only returned if you’ve configured a customer managed CMK.

TracingConfig -> (structure)

The function’s AWS X-Ray tracing configuration.

Mode -> (string)

The tracing mode.

MasterArn -> (string)

For Lambda@Edge functions, the ARN of the master function.

RevisionId -> (string)

The latest updated revision of the function or alias.

Layers -> (list)

The function’s layers .

(structure)

An AWS Lambda layer .

Arn -> (string)

The Amazon Resource Name (ARN) of the function layer.

CodeSize -> (long)

The size of the layer archive in bytes.

State -> (string)

The current state of the function. When the state is Inactive , you can reactivate the function by invoking it.

StateReason -> (string)

The reason for the function’s current state.

StateReasonCode -> (string)

The reason code for the function’s current state. When the code is Creating , you can’t invoke or modify the function.

LastUpdateStatus -> (string)

The status of the last update that was performed on the function. This is first set to Successful after function creation completes.

LastUpdateStatusReason -> (string)

The reason for the last update that was performed on the function.

LastUpdateStatusReasonCode -> (string)

The reason code for the last update that was performed on the function.

FileSystemConfigs -> (list)

Connection settings for an Amazon EFS file system.

(structure)

Details about the connection between a Lambda function and an Amazon EFS file system.

Arn -> (string)

The Amazon Resource Name (ARN) of the Amazon EFS access point that provides access to the file system.

LocalMountPath -> (string)

The path where the function can access the file system, starting with /mnt/ .