Request Syntax Request Parameters Response Syntax Response Elements Errors Examples See Also

GetMaintenanceWindowTask

Retrieves the details of a maintenance window task.

Note

For maintenance window tasks without a specified target, you can't supply values for --max-errors and --max-concurrency. Instead, the system inserts a placeholder value of 1, which may be reported in the response to this command. These values don't affect the running of your task and can be ignored.

To retrieve a list of tasks in a maintenance window, instead use the DescribeMaintenanceWindowTasks command.

Request Syntax


{
   "WindowId": "string",
   "WindowTaskId": "string"
}

Request Parameters

For information about the parameters that are common to all actions, see Common Parameters.

The request accepts the following data in JSON format.

WindowId

The maintenance window ID that includes the task to retrieve.

Type: String

Length Constraints: Fixed length of 20.

Pattern: ^mw-[0-9a-f]{17}$

Required: Yes

WindowTaskId

The maintenance window task ID to retrieve.

Type: String

Length Constraints: Fixed length of 36.

Pattern: ^[0-9a-fA-F]{8}\-[0-9a-fA-F]{4}\-[0-9a-fA-F]{4}\-[0-9a-fA-F]{4}\-[0-9a-fA-F]{12}$

Required: Yes

Response Syntax


{
   "AlarmConfiguration": { 
      "Alarms": [ 
         { 
            "Name": "string"
         }
      ],
      "IgnorePollAlarmFailure": boolean
   },
   "CutoffBehavior": "string",
   "Description": "string",
   "LoggingInfo": { 
      "S3BucketName": "string",
      "S3KeyPrefix": "string",
      "S3Region": "string"
   },
   "MaxConcurrency": "string",
   "MaxErrors": "string",
   "Name": "string",
   "Priority": number,
   "ServiceRoleArn": "string",
   "Targets": [ 
      { 
         "Key": "string",
         "Values": [ "string" ]
      }
   ],
   "TaskArn": "string",
   "TaskInvocationParameters": { 
      "Automation": { 
         "DocumentVersion": "string",
         "Parameters": { 
            "string" : [ "string" ]
         }
      },
      "Lambda": { 
         "ClientContext": "string",
         "Payload": blob,
         "Qualifier": "string"
      },
      "RunCommand": { 
         "CloudWatchOutputConfig": { 
            "CloudWatchLogGroupName": "string",
            "CloudWatchOutputEnabled": boolean
         },
         "Comment": "string",
         "DocumentHash": "string",
         "DocumentHashType": "string",
         "DocumentVersion": "string",
         "NotificationConfig": { 
            "NotificationArn": "string",
            "NotificationEvents": [ "string" ],
            "NotificationType": "string"
         },
         "OutputS3BucketName": "string",
         "OutputS3KeyPrefix": "string",
         "Parameters": { 
            "string" : [ "string" ]
         },
         "ServiceRoleArn": "string",
         "TimeoutSeconds": number
      },
      "StepFunctions": { 
         "Input": "string",
         "Name": "string"
      }
   },
   "TaskParameters": { 
      "string" : { 
         "Values": [ "string" ]
      }
   },
   "TaskType": "string",
   "WindowId": "string",
   "WindowTaskId": "string"
}

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.

AlarmConfiguration

The details for the CloudWatch alarm you applied to your maintenance window task.

Type: AlarmConfiguration object

CutoffBehavior

The action to take on tasks when the maintenance window cutoff time is reached. CONTINUE_TASK means that tasks continue to run. For Automation, AWS Lambda, AWS Step Functions tasks, CANCEL_TASK means that currently running task invocations continue, but no new task invocations are started. For Run Command tasks, CANCEL_TASK means the system attempts to stop the task by sending a CancelCommand operation.

Type: String

Valid Values: CONTINUE_TASK | CANCEL_TASK

Description

The retrieved task description.

Type: String

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

LoggingInfo

The location in Amazon Simple Storage Service (Amazon S3) where the task results are logged.

Note

LoggingInfo has been deprecated. To specify an Amazon Simple Storage Service (Amazon S3) bucket to contain logs, instead use the OutputS3BucketName and OutputS3KeyPrefix options in the TaskInvocationParameters structure. For information about how AWS Systems Manager handles these options for the supported maintenance window task types, see MaintenanceWindowTaskInvocationParameters.

Type: LoggingInfo object

MaxConcurrency

The maximum number of targets allowed to run this task in parallel.

Note

For maintenance window tasks without a target specified, you can't supply a value for this option. Instead, the system inserts a placeholder value of 1, which may be reported in the response to this command. This value doesn't affect the running of your task and can be ignored.

Type: String

Length Constraints: Minimum length of 1. Maximum length of 7.

Pattern: ^([1-9][0-9]*|[1-9][0-9]%|[1-9]%|100%)$

MaxErrors

The maximum number of errors allowed before the task stops being scheduled.

Note

Type: String

Length Constraints: Minimum length of 1. Maximum length of 7.

Pattern: ^([1-9][0-9]*|[0]|[1-9][0-9]%|[0-9]%|100%)$

Name

The retrieved task name.

Type: String

Length Constraints: Minimum length of 3. Maximum length of 128.

Pattern: ^[a-zA-Z0-9_\-.]{3,128}$

Priority

The priority of the task when it runs. The lower the number, the higher the priority. Tasks that have the same priority are scheduled in parallel.

Type: Integer

Valid Range: Minimum value of 0.

ServiceRoleArn

The Amazon Resource Name (ARN) of the IAM service role for AWS Systems Manager to assume when running a maintenance window task. If you do not specify a service role ARN, Systems Manager uses a service-linked role in your account. If no appropriate service-linked role for Systems Manager exists in your account, it is created when you run RegisterTaskWithMaintenanceWindow.

However, for an improved security posture, we strongly recommend creating a custom policy and custom service role for running your maintenance window tasks. The policy can be crafted to provide only the permissions needed for your particular maintenance window tasks. For more information, see Setting up Maintenance Windows in the in the AWS Systems Manager User Guide.

Type: String

Targets

The targets where the task should run.

Type: Array of Target objects

Array Members: Minimum number of 0 items. Maximum number of 5 items.

TaskArn

The resource that the task used during execution. For RUN_COMMAND and AUTOMATION task types, the value of TaskArn is the SSM document name/ARN. For LAMBDA tasks, the value is the function name/ARN. For STEP_FUNCTIONS tasks, the value is the state machine ARN.

Type: String

Length Constraints: Minimum length of 1. Maximum length of 1600.

TaskInvocationParameters

The parameters to pass to the task when it runs.

Type: MaintenanceWindowTaskInvocationParameters object

TaskParameters

The parameters to pass to the task when it runs.

Note

TaskParameters has been deprecated. To specify parameters to pass to a task when it runs, instead use the Parameters option in the TaskInvocationParameters structure. For information about how Systems Manager handles these options for the supported maintenance window task types, see MaintenanceWindowTaskInvocationParameters.

Type: String to MaintenanceWindowTaskParameterValueExpression object map

Key Length Constraints: Minimum length of 1. Maximum length of 255.

TaskType

The type of task to run.

Type: String

Valid Values: RUN_COMMAND | AUTOMATION | STEP_FUNCTIONS | LAMBDA

WindowId

The retrieved maintenance window ID.

Type: String

Length Constraints: Fixed length of 20.

Pattern: ^mw-[0-9a-f]{17}$

WindowTaskId

The retrieved maintenance window task ID.

Type: String

Length Constraints: Fixed length of 36.

Pattern: ^[0-9a-fA-F]{8}\-[0-9a-fA-F]{4}\-[0-9a-fA-F]{4}\-[0-9a-fA-F]{4}\-[0-9a-fA-F]{12}$

Errors

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

DoesNotExistException

Error returned when the ID specified for a resource, such as a maintenance window or patch baseline, doesn't exist.

For information about resource quotas in AWS Systems Manager, see Systems Manager service quotas in the Amazon Web Services General Reference.

HTTP Status Code: 400

InternalServerError

An error occurred on the server side.

HTTP Status Code: 500

Examples

Example

This example illustrates one usage of GetMaintenanceWindowTask.

Sample Request


POST / HTTP/1.1
Host: ssm.us-east-2.amazonaws.com
Accept-Encoding: identity
X-Amz-Target: AmazonSSM.GetMaintenanceWindowTask
Content-Type: application/x-amz-json-1.1
User-Agent: aws-cli/2.0.0 Python/3.7.5 Windows/10 botocore/2.0.0dev4
X-Amz-Date: 20240225T002532Z
Authorization: AWS4-HMAC-SHA256 Credential=AKIAIOSFODNN7EXAMPLE/20240225/us-east-2/ssm/aws4_request,
SignedHeaders=content-type;host;x-amz-date;x-amz-target, Signature=39c3b3042cd2aEXAMPLE
Content-Length: 92

{
    "WindowId": "mw-0c50858d01EXAMPLE",
    "WindowTaskId": "50772993-c6b5-4a2a-8d04-7bfd7EXAMPLE"
}

Sample Response


{    
    "WindowId": "mw-0c50858d01EXAMPLE",
    "WindowTaskId": "50772993-c6b5-4a2a-8d04-7bfd7EXAMPLE",
    "Name": "MyRunCommandTask",
    "Targets": [
        {
            "Key": "WindowTargetIds",
            "Values": [
                "23639a0b-ddbc-4bca-9e72-78d96EXAMPLE"
            ]
        }
    ],
    "TaskArn": "AWS-ApplyPatchBaseline",
    "ServiceRoleArn": "arn:aws:iam::111122223333:role/aws-service-role/ssm.amazonaws.com/AWSServiceRoleForAmazonSSM",
    "TaskType": "RUN_COMMAND",
    "TaskParameters": {},
    "Priority": 1,
    "TaskInvocationParameters": {
        "RunCommand": {
            "Comment": "",
            "Parameters": {
                "Operation": [
                    "Install"
                ],
                "SnapshotId": [
                    ""
                ]
            },
            "TimeoutSeconds": 600
        }
    },
    "MaxConcurrency": "1",
    "MaxErrors": "1"
}