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UpdateMicrovmImage - AWS Lambda MicroVMs
Request SyntaxURI Request ParametersRequest BodyResponse SyntaxResponse ElementsErrorsSee Also

UpdateMicrovmImage

Updates the configuration of a MicroVM image and triggers a new version build. This operation uses PUT semantics — all required fields (codeArtifact, baseImageArn, buildRoleArn) must be provided with every request.

Request Syntax

PUT /2025-09-09/microvm-images/imageIdentifier HTTP/1.1
Content-type: application/json

{
   "additionalOsCapabilities": [ "string" ],
   "baseImageArn": "string",
   "baseImageVersion": "string",
   "buildRoleArn": "string",
   "clientToken": "string",
   "codeArtifact": { ... },
   "cpuConfigurations": [ 
      { 
         "architecture": "string"
      }
   ],
   "description": "string",
   "egressNetworkConnectors": [ "string" ],
   "environmentVariables": { 
      "string" : "string" 
   },
   "hooks": { 
      "microvmHooks": { 
         "resume": "string",
         "resumeTimeoutInSeconds": number,
         "run": "string",
         "runTimeoutInSeconds": number,
         "suspend": "string",
         "suspendTimeoutInSeconds": number,
         "terminate": "string",
         "terminateTimeoutInSeconds": number
      },
      "microvmImageHooks": { 
         "ready": "string",
         "readyTimeoutInSeconds": number,
         "validate": "string",
         "validateTimeoutInSeconds": number
      },
      "port": number
   },
   "logging": { ... },
   "resources": [ 
      { 
         "minimumMemoryInMiB": number
      }
   ]
}

URI Request Parameters

The request uses the following URI parameters.

imageIdentifier

The unique identifier (ARN or ID) of the MicroVM image to update.

Length Constraints: Minimum length of 1. Maximum length of 256.

Required: Yes

Request Body

The request accepts the following data in JSON format.

additionalOsCapabilities

Additional OS capabilities granted to the MicroVM runtime environment.

Type: Array of strings

Valid Values: ALL

Required: No

baseImageArn

The ARN of the base MicroVM image.

Type: String

Length Constraints: Minimum length of 1. Maximum length of 2048.

Pattern: [^\s]+

Required: Yes

baseImageVersion

The specific version of the base MicroVM image to use.

Type: String

Length Constraints: Minimum length of 1. Maximum length of 2048.

Pattern: [^\s]+

Required: No

buildRoleArn

The ARN of the IAM build role.

Type: String

Length Constraints: Minimum length of 20. Maximum length of 2048.

Pattern: arn:aws[a-z\-]*:iam::[0-9]{12}:role/?[a-zA-Z_0-9+=,.@\-_/]+

Required: Yes

clientToken

A unique, case-sensitive identifier you provide to ensure the idempotency of the request.

Type: String

Length Constraints: Minimum length of 1. Maximum length of 128.

Required: No

codeArtifact

The code artifact containing the application code and metadata for the MicroVM image.

Type: CodeArtifact object

Note: This object is a Union. Only one member of this object can be specified or returned.

Required: Yes

cpuConfigurations

The list of supported CPU configurations for the MicroVM.

Type: Array of CpuConfiguration objects

Required: No

description

The description of the MicroVM image.

Type: String

Required: No

egressNetworkConnectors

The list of egress network connectors available to the MicroVM at runtime.

Type: Array of strings

Array Members: Minimum number of 0 items. Maximum number of 1 item.

Length Constraints: Minimum length of 1. Maximum length of 2048.

Required: No

environmentVariables

Environment variables set in the MicroVM runtime environment.

Type: String to string map

Map Entries: Minimum number of 0 items. Maximum number of 50 items.

Key Length Constraints: Minimum length of 1. Maximum length of 256.

Key Pattern: [^\s]+

Value Length Constraints: Minimum length of 0. Maximum length of 4096.

Required: No

hooks

Lifecycle hook configuration for MicroVMs and MicroVM images.

Type: Hooks object

Required: No

logging

The logging configuration for build-time and runtime logs. Specify {"cloudWatch": {"logGroup": "..."}} to stream logs to a custom CloudWatch log group, or {"disabled": {}} to turn off logging.

Type: Logging object

Note: This object is a Union. Only one member of this object can be specified or returned.

Required: No

resources

The resource requirements for the MicroVM.

Type: Array of Resources objects

Array Members: Minimum number of 0 items. Maximum number of 1 item.

Required: No

Response Syntax

HTTP/1.1 200
Content-type: application/json

{
   "additionalOsCapabilities": [ "string" ],
   "baseImageArn": "string",
   "baseImageVersion": "string",
   "buildRoleArn": "string",
   "codeArtifact": { ... },
   "cpuConfigurations": [ 
      { 
         "architecture": "string"
      }
   ],
   "createdAt": number,
   "description": "string",
   "egressNetworkConnectors": [ "string" ],
   "environmentVariables": { 
      "string" : "string" 
   },
   "hooks": { 
      "microvmHooks": { 
         "resume": "string",
         "resumeTimeoutInSeconds": number,
         "run": "string",
         "runTimeoutInSeconds": number,
         "suspend": "string",
         "suspendTimeoutInSeconds": number,
         "terminate": "string",
         "terminateTimeoutInSeconds": number
      },
      "microvmImageHooks": { 
         "ready": "string",
         "readyTimeoutInSeconds": number,
         "validate": "string",
         "validateTimeoutInSeconds": number
      },
      "port": number
   },
   "imageArn": "string",
   "imageVersion": "string",
   "latestActiveImageVersion": "string",
   "latestFailedImageVersion": "string",
   "logging": { ... },
   "name": "string",
   "resources": [ 
      { 
         "minimumMemoryInMiB": number
      }
   ],
   "state": "string",
   "updatedAt": number
}

Response Elements

If the action is successful, the service sends back an HTTP 200 response.

The following data is returned in JSON format by the service.

additionalOsCapabilities

Additional OS capabilities granted to the MicroVM runtime environment.

Type: Array of strings

Valid Values: ALL

baseImageArn

The ARN of the base MicroVM image.

Type: String

Length Constraints: Minimum length of 1. Maximum length of 2048.

Pattern: [^\s]+

baseImageVersion

The specific version of the base MicroVM image.

Type: String

Length Constraints: Minimum length of 1. Maximum length of 2048.

Pattern: [^\s]+

buildRoleArn

The ARN of the IAM build role.

Type: String

Length Constraints: Minimum length of 20. Maximum length of 2048.

Pattern: arn:aws[a-z\-]*:iam::[0-9]{12}:role/?[a-zA-Z_0-9+=,.@\-_/]+

codeArtifact

The code artifact containing the application code and metadata for the MicroVM image.

Type: CodeArtifact object

Note: This object is a Union. Only one member of this object can be specified or returned.

cpuConfigurations

The list of supported CPU configurations for the MicroVM.

Type: Array of CpuConfiguration objects

createdAt

The timestamp when the MicroVM image was created.

Type: Timestamp

description

The description of the MicroVM image.

Type: String

egressNetworkConnectors

The list of egress network connectors available to the MicroVM at runtime.

Type: Array of strings

Array Members: Minimum number of 0 items. Maximum number of 1 item.

Length Constraints: Minimum length of 1. Maximum length of 2048.

environmentVariables

Environment variables set in the MicroVM runtime environment.

Type: String to string map

Map Entries: Minimum number of 0 items. Maximum number of 50 items.

Key Length Constraints: Minimum length of 1. Maximum length of 256.

Key Pattern: [^\s]+

Value Length Constraints: Minimum length of 0. Maximum length of 4096.

hooks

Lifecycle hook configuration for MicroVMs and MicroVM images.

Type: Hooks object

imageArn

The ARN of the MicroVM image.

Type: String

Length Constraints: Minimum length of 1. Maximum length of 2048.

Pattern: [^\s]+

imageVersion

The version of the MicroVM image.

Type: String

Length Constraints: Minimum length of 1. Maximum length of 2048.

Pattern: [^\s]+

latestActiveImageVersion

The latest active version of the MicroVM image.

Type: String

Length Constraints: Minimum length of 1. Maximum length of 2048.

Pattern: [^\s]+

latestFailedImageVersion

The latest failed version of the MicroVM image, if any.

Type: String

Length Constraints: Minimum length of 1. Maximum length of 2048.

Pattern: [^\s]+

logging

The logging configuration for build-time and runtime logs. Specify {"cloudWatch": {"logGroup": "..."}} to stream logs to a custom CloudWatch log group, or {"disabled": {}} to turn off logging.

Type: Logging object

Note: This object is a Union. Only one member of this object can be specified or returned.

name

The name of the MicroVM image.

Type: String

Length Constraints: Minimum length of 1. Maximum length of 64.

Pattern: [a-zA-Z0-9-_]+

resources

The resource requirements for the MicroVM.

Type: Array of Resources objects

Array Members: Minimum number of 0 items. Maximum number of 1 item.

state

The current state of the MicroVM image.

Type: String

Valid Values: CREATING | CREATED | CREATE_FAILED | UPDATING | UPDATED | UPDATE_FAILED | DELETING | DELETE_FAILED | DELETED

updatedAt

The timestamp when the MicroVM image was last updated.

Type: Timestamp

Errors

For information about the errors that are common to all actions, see Common Error Types.

AccessDeniedException

You do not have sufficient access to perform this action.

HTTP Status Code: 403

ConflictException

The request could not be completed due to a conflict with the current state of the resource.

resourceId

The identifier of the resource that caused the conflict.

resourceType

The type of the resource that caused the conflict.

HTTP Status Code: 409

InternalServerException

An internal server error occurred. Retry the request later.

retryAfterSeconds

The number of seconds to wait before retrying the request.

HTTP Status Code: 500

ResourceNotFoundException

The specified resource does not exist.

resourceId

The identifier of the resource that was not found.

resourceType

The type of the resource that was not found.

HTTP Status Code: 404

ServiceQuotaExceededException

You have exceeded a service quota for Lambda MicroVMs.

quotaCode

The quota code of the exceeded service quota.

resourceId

The identifier of the resource that exceeded the quota.

resourceType

The type of the resource that exceeded the quota.

serviceCode

The service code of the exceeded service quota.

HTTP Status Code: 402

ThrottlingException

The request was denied due to request throttling. Retry the request later.

quotaCode

The quota code of the throttled service quota.

retryAfterSeconds

The number of seconds to wait before retrying the request.

serviceCode

The service code of the throttled service quota.

HTTP Status Code: 429

ValidationException

The input does not satisfy the constraints specified by the service.

HTTP Status Code: 400

See Also

For more information about using this API in one of the language-specific AWS SDKs, see the following: