• The AWS Systems Manager CloudWatch Dashboard will no longer be available after April 30, 2026. Customers can continue to use Amazon CloudWatch console to view, create, and manage their Amazon CloudWatch dashboards, just as they do today. For more information, see [Amazon CloudWatch Dashboard documentation](https://docs.aws.amazon.com/AmazonCloudWatch/latest/monitoring/CloudWatch_Dashboards.html).
# Examples: Register tasks with a maintenance window
You can register a task in Run Command, a tool in AWS Systems Manager, with a maintenance window using the AWS Command Line Interface (AWS CLI), as demonstrated in [Register tasks with the maintenance window](mw-cli-tutorial-tasks.md). You can also register tasks for Systems Manager Automation workflows, AWS Lambda functions, and AWS Step Functions tasks, as demonstrated later in this topic.
**Note**
Specify one or more targets for maintenance window Run Command-type tasks. Depending on the task, targets are optional for other maintenance window task types (Automation, AWS Lambda, and AWS Step Functions). For more information about running tasks that don't specify targets, see [Registering maintenance window tasks without targets](maintenance-windows-targetless-tasks.md).
In this topic, we provide examples of using the AWS Command Line Interface (AWS CLI) command `register-task-with-maintenance-window` to register each of the four supported task types with a maintenance window. The examples are for demonstration only, but you can modify them to create working task registration commands.
**Using the --cli-input-json option**
To better manage your task options, you can use the command option `--cli-input-json`, with option values referenced in a JSON file.
To use the sample JSON file content we provide in the following examples, do the following on your local machine:
1. Create a file with a name such as `MyRunCommandTask.json`, `MyAutomationTask.json`, or another name that you prefer.
1. Copy the contents of our JSON sample into the file.
1. Modify the contents of the file for your task registration, and then save the file.
1. In the same directory where you stored the file, run the following command. Substitute your file name for *MyFile.json*.
------
#### [ Linux & macOS ]
```
aws ssm register-task-with-maintenance-window \
--cli-input-json file://MyFile.json
```
------
#### [ Windows ]
```
aws ssm register-task-with-maintenance-window ^
--cli-input-json file://MyFile.json
```
------
**Pseudo parameters in maintenance window tasks**
In some examples, we use *pseudo parameters* as the method to pass ID information to your tasks. For instance, `{{TARGET_ID}}` and `{{RESOURCE_ID}}` can be used to pass IDs of AWS resources to Automation, Lambda, and Step Functions tasks. For more information about pseudo parameters in `--task-invocation-parameters` content, see [Using pseudo parameters when registering maintenance window tasks](maintenance-window-tasks-pseudo-parameters.md).
**More info**
+ [Parameter options for the register-task-with-maintenance-windows command](mw-cli-task-options.md).
+ [https://docs.aws.amazon.com/cli/latest/reference/ssm/register-task-with-maintenance-window.html](https://docs.aws.amazon.com/cli/latest/reference/ssm/register-task-with-maintenance-window.html) in the *AWS CLI Command Reference*
+ [https://docs.aws.amazon.com/systems-manager/latest/APIReference/API_RegisterTaskWithMaintenanceWindow.html](https://docs.aws.amazon.com/systems-manager/latest/APIReference/API_RegisterTaskWithMaintenanceWindow.html) in the *AWS Systems Manager API Reference*
## Task registration examples
The following sections provide a sample AWS CLI command for registering a supported task type and a JSON sample that can be used with the `--cli-input-json` option.
### Register a Systems Manager Run Command task
The following examples demonstrate how to register Systems Manager Run Command tasks with a maintenance window using the AWS CLI.
------
#### [ Linux & macOS ]
```
aws ssm register-task-with-maintenance-window \
--window-id mw-0c50858d01EXAMPLE \
--task-arn "AWS-RunShellScript" \
--max-concurrency 1 --max-errors 1 --priority 10 \
--targets "Key=InstanceIds,Values=i-02573cafcfEXAMPLE" \
--task-type "RUN_COMMAND" \
--task-invocation-parameters '{"RunCommand":{"Parameters":{"commands":["df"]}}}'
```
------
#### [ Windows ]
```
aws ssm register-task-with-maintenance-window ^
--window-id mw-0c50858d01EXAMPLE ^
--task-arn "AWS-RunShellScript" ^
--max-concurrency 1 --max-errors 1 --priority 10 ^
--targets "Key=InstanceIds,Values=i-02573cafcfEXAMPLE" ^
--task-type "RUN_COMMAND" ^
--task-invocation-parameters "{\"RunCommand\":{\"Parameters\":{\"commands\":[\"df\"]}}}"
```
------
**JSON content to use with `--cli-input-json` file option:**
```
{
"TaskType": "RUN_COMMAND",
"WindowId": "mw-0c50858d01EXAMPLE",
"Description": "My Run Command task to update SSM Agent on an instance",
"MaxConcurrency": "1",
"MaxErrors": "1",
"Name": "My-Run-Command-Task",
"Priority": 10,
"Targets": [
{
"Key": "WindowTargetIds",
"Values": [
"e32eecb2-646c-4f4b-8ed1-205fbEXAMPLE"
]
}
],
"TaskArn": "AWS-UpdateSSMAgent",
"TaskInvocationParameters": {
"RunCommand": {
"Comment": "A TaskInvocationParameters test comment",
"NotificationConfig": {
"NotificationArn": "arn:aws:sns:region:123456789012:my-sns-topic-name",
"NotificationEvents": [
"All"
],
"NotificationType": "Invocation"
},
"OutputS3BucketName": "amzn-s3-demo-bucket",
"OutputS3KeyPrefix": "S3-PREFIX",
"TimeoutSeconds": 3600
}
}
}
```
### Register a Systems Manager Automation task
The following examples demonstrate how to register Systems Manager Automation tasks with a maintenance window using the AWS CLI:
**AWS CLI command:**
------
#### [ Linux & macOS ]
```
aws ssm register-task-with-maintenance-window \
--window-id "mw-0c50858d01EXAMPLE" \
--task-arn "AWS-RestartEC2Instance" \
--service-role-arn arn:aws:iam::123456789012:role/MyMaintenanceWindowServiceRole \
--task-type AUTOMATION \
--task-invocation-parameters "Automation={DocumentVersion=5,Parameters={InstanceId='{{RESOURCE_ID}}'}}" \
--priority 0 --name "My-Restart-EC2-Instances-Automation-Task" \
--description "Automation task to restart EC2 instances"
```
------
#### [ Windows ]
```
aws ssm register-task-with-maintenance-window ^
--window-id "mw-0c50858d01EXAMPLE" ^
--task-arn "AWS-RestartEC2Instance" ^
--service-role-arn arn:aws:iam::123456789012:role/MyMaintenanceWindowServiceRole ^
--task-type AUTOMATION ^
--task-invocation-parameters "Automation={DocumentVersion=5,Parameters={InstanceId='{{TARGET_ID}}'}}" ^
--priority 0 --name "My-Restart-EC2-Instances-Automation-Task" ^
--description "Automation task to restart EC2 instances"
```
------
**JSON content to use with `--cli-input-json` file option:**
```
{
"WindowId": "mw-0c50858d01EXAMPLE",
"TaskArn": "AWS-PatchInstanceWithRollback",
"TaskType": "AUTOMATION","TaskInvocationParameters": {
"Automation": {
"DocumentVersion": "1",
"Parameters": {
"instanceId": [
"{{RESOURCE_ID}}"
]
}
}
}
}
```
### Register an AWS Lambda task
The following examples demonstrate how to register Lambda function tasks with a maintenance window using the AWS CLI.
For these examples, the user who created the Lambda function named it `SSMrestart-my-instances` and created two parameters called `instanceId` and `targetType`.
**Important**
The IAM policy for Maintenance Windows requires that you add the prefix `SSM` to Lambda function (or alias) names. Before you proceed to register this type of task, update its name in AWS Lambda to include `SSM`. For example, if your Lambda function name is `MyLambdaFunction`, change it to `SSMMyLambdaFunction`.
**AWS CLI command:**
------
#### [ Linux & macOS ]
**Important**
If you are using version 2 of the AWS CLI, you must include the option `--cli-binary-format raw-in-base64-out` in the following command if your Lambda payload is not base64 encoded. The `cli_binary_format` option is available only in version 2. For information about this and other AWS CLI `config` file settings, see [Supported `config` file settings](https://docs.aws.amazon.com/cli/latest/userguide/cli-configure-files.html#cli-configure-files-settings) in the *AWS Command Line Interface User Guide*.
```
aws ssm register-task-with-maintenance-window \
--window-id "mw-0c50858d01EXAMPLE" \
--targets "Key=WindowTargetIds,Values=e32eecb2-646c-4f4b-8ed1-205fbEXAMPLE" \
--priority 2 --max-concurrency 10 --max-errors 5 --name "My-Lambda-Example" \
--description "A description for my LAMBDA example task" --task-type "LAMBDA" \
--task-arn "arn:aws:lambda:region:123456789012:function:serverlessrepo-SSMrestart-my-instances-C4JF9EXAMPLE" \
--task-invocation-parameters '{"Lambda":{"Payload":"{\"InstanceId\":\"{{RESOURCE_ID}}\",\"targetType\":\"{{TARGET_TYPE}}\"}","Qualifier": "$LATEST"}}'
```
------
#### [ PowerShell ]
**Important**
If you are using version 2 of the AWS CLI, you must include the option `--cli-binary-format raw-in-base64-out` in the following command if your Lambda payload is not base64 encoded. The `cli_binary_format` option is available only in version 2. For information about this and other AWS CLI `config` file settings, see [Supported `config` file settings](https://docs.aws.amazon.com/cli/latest/userguide/cli-configure-files.html#cli-configure-files-settings) in the *AWS Command Line Interface User Guide*.
```
aws ssm register-task-with-maintenance-window `
--window-id "mw-0c50858d01EXAMPLE" `
--targets "Key=WindowTargetIds,Values=e32eecb2-646c-4f4b-8ed1-205fbEXAMPLE" `
--priority 2 --max-concurrency 10 --max-errors 5 --name "My-Lambda-Example" `
--description "A description for my LAMBDA example task" --task-type "LAMBDA" `
--task-arn "arn:aws:lambda:region:123456789012:function:serverlessrepo-SSMrestart-my-instances-C4JF9EXAMPLE" `
--task-invocation-parameters '{\"Lambda\":{\"Payload\":\"{\\\"InstanceId\\\":\\\"{{RESOURCE_ID}}\\\",\\\"targetType\\\":\\\"{{TARGET_TYPE}}\\\"}\",\"Qualifier\": \"$LATEST\"}}'
```
------
**JSON content to use with `--cli-input-json` file option:**
```
{
"WindowId": "mw-0c50858d01EXAMPLE",
"Targets": [
{
"Key": "WindowTargetIds",
"Values": [
"e32eecb2-646c-4f4b-8ed1-205fbEXAMPLE"
]
}
],
"TaskArn": "SSM_RestartMyInstances",
"TaskType": "LAMBDA",
"MaxConcurrency": "10",
"MaxErrors": "10",
"TaskInvocationParameters": {
"Lambda": {
"ClientContext": "ew0KICAi--truncated--0KIEXAMPLE",
"Payload": "{ \"instanceId\": \"{{RESOURCE_ID}}\", \"targetType\": \"{{TARGET_TYPE}}\" }",
"Qualifier": "$LATEST"
}
},
"Name": "My-Lambda-Task",
"Description": "A description for my LAMBDA task",
"Priority": 5
}
```
### Register a Step Functions task
The following examples demonstrate how to register Step Functions state machine tasks with a maintenance window using the AWS CLI.
**Note**
Maintenance window tasks support Step Functions Standard state machine workflows only. They don't support Express state machine workflows. For information about state machine workflow types, see [Standard vs. Express Workflows](https://docs.aws.amazon.com/step-functions/latest/dg/concepts-standard-vs-express.html) in the *AWS Step Functions Developer Guide*.
For these examples, the user who created the Step Functions state machine created a state machine named `SSMMyStateMachine` with a parameter called `instanceId`.
**Important**
The AWS Identity and Access Management (IAM) policy for Maintenance Windows requires that you prefix Step Functions state machine names with `SSM`. Before you proceed to register this type of task, you must update its name in AWS Step Functions to include `SSM`. For example, if your state machine name is `MyStateMachine`, change it to `SSMMyStateMachine`.
**AWS CLI command:**
------
#### [ Linux & macOS ]
```
aws ssm register-task-with-maintenance-window \
--window-id "mw-0c50858d01EXAMPLE" \
--targets "Key=WindowTargetIds,Values=e32eecb2-646c-4f4b-8ed1-205fbEXAMPLE" \
--task-arn arn:aws:states:region:123456789012:stateMachine:SSMMyStateMachine-MggiqEXAMPLE \
--task-type STEP_FUNCTIONS \
--task-invocation-parameters '{"StepFunctions":{"Input":"{\"InstanceId\":\"{{RESOURCE_ID}}\"}", "Name":"{{INVOCATION_ID}}"}}' \
--priority 0 --max-concurrency 10 --max-errors 5 \
--name "My-Step-Functions-Task" --description "A description for my Step Functions task"
```
------
#### [ PowerShell ]
```
aws ssm register-task-with-maintenance-window `
--window-id "mw-0c50858d01EXAMPLE" `
--targets "Key=WindowTargetIds,Values=e32eecb2-646c-4f4b-8ed1-205fbEXAMPLE" `
--task-arn arn:aws:states:region:123456789012:stateMachine:SSMMyStateMachine-MggiqEXAMPLE `
--task-type STEP_FUNCTIONS `
--task-invocation-parameters '{\"StepFunctions\":{\"Input\":\"{\\\"InstanceId\\\":\\\"{{RESOURCE_ID}}\\\"}\", \"Name\":\"{{INVOCATION_ID}}\"}}' `
--priority 0 --max-concurrency 10 --max-errors 5 `
--name "My-Step-Functions-Task" --description "A description for my Step Functions task"
```
------
**JSON content to use with `--cli-input-json` file option:**
```
{
"WindowId": "mw-0c50858d01EXAMPLE",
"Targets": [
{
"Key": "WindowTargetIds",
"Values": [
"e32eecb2-646c-4f4b-8ed1-205fbEXAMPLE"
]
}
],
"TaskArn": "SSM_MyStateMachine",
"TaskType": "STEP_FUNCTIONS",
"MaxConcurrency": "10",
"MaxErrors": "10",
"TaskInvocationParameters": {
"StepFunctions": {
"Input": "{ \"instanceId\": \"{{TARGET_ID}}\" }",
"Name": "{{INVOCATION_ID}}"
}
},
"Name": "My-Step-Functions-Task",
"Description": "A description for my Step Functions task",
"Priority": 5
}
```