[ aws . cloudformation ]

update-stack-instances

Description

Updates the parameter values for stack instances for the specified accounts, within the specified Regions. A stack instance refers to a stack in a specific account and Region.

You can only update stack instances in Regions and accounts where they already exist; to create additional stack instances, use CreateStackInstances .

During stack set updates, any parameters overridden for a stack instance are not updated, but retain their overridden value.

You can only update the parameter values that are specified in the stack set; to add or delete a parameter itself, use UpdateStackSet to update the stack set template. If you add a parameter to a template, before you can override the parameter value specified in the stack set you must first use UpdateStackSet to update all stack instances with the updated template and parameter value specified in the stack set. Once a stack instance has been updated with the new parameter, you can then override the parameter value using UpdateStackInstances .

See also: AWS API Documentation

See ‘aws help’ for descriptions of global parameters.

Synopsis

  update-stack-instances
--stack-set-name <value>
[--accounts <value>]
[--deployment-targets <value>]
--regions <value>
[--parameter-overrides <value>]
[--operation-preferences <value>]
[--operation-id <value>]
[--cli-input-json | --cli-input-yaml]
[--generate-cli-skeleton <value>]
[--cli-auto-prompt <value>]

Options

--stack-set-name (string)

The name or unique ID of the stack set associated with the stack instances.

--accounts (list)

[Self-managed permissions] The names of one or more AWS accounts for which you want to update parameter values for stack instances. The overridden parameter values will be applied to all stack instances in the specified accounts and Regions.

You can specify Accounts or DeploymentTargets , but not both.

(string)

Syntax:

"string" "string" ...

--deployment-targets (structure)

[Service-managed permissions] The AWS Organizations accounts for which you want to update parameter values for stack instances. If your update targets OUs, the overridden parameter values only apply to the accounts that are currently in the target OUs and their child OUs. Accounts added to the target OUs and their child OUs in the future won’t use the overridden values.

You can specify Accounts or DeploymentTargets , but not both.

Accounts -> (list)

The names of one or more AWS accounts for which you want to deploy stack set updates.

(string)

OrganizationalUnitIds -> (list)

The organization root ID or organizational unit (OU) IDs to which StackSets deploys.

(string)

Shorthand Syntax:

Accounts=string,string,OrganizationalUnitIds=string,string

JSON Syntax:

{
  "Accounts": ["string", ...],
  "OrganizationalUnitIds": ["string", ...]
}

--regions (list)

The names of one or more Regions in which you want to update parameter values for stack instances. The overridden parameter values will be applied to all stack instances in the specified accounts and Regions.

(string)

Syntax:

"string" "string" ...

--parameter-overrides (list)

A list of input parameters whose values you want to update for the specified stack instances.

Any overridden parameter values will be applied to all stack instances in the specified accounts and Regions. When specifying parameters and their values, be aware of how AWS CloudFormation sets parameter values during stack instance update operations:

• To override the current value for a parameter, include the parameter and specify its value.

• To leave a parameter set to its present value, you can do one of the following:

  • Do not include the parameter in the list.

  • Include the parameter and specify UsePreviousValue as true . (You cannot specify both a value and set UsePreviousValue to true .)

• To set all overridden parameter back to the values specified in the stack set, specify a parameter list but do not include any parameters.

• To leave all parameters set to their present values, do not specify this property at all.

During stack set updates, any parameter values overridden for a stack instance are not updated, but retain their overridden value.

You can only override the parameter values that are specified in the stack set; to add or delete a parameter itself, use UpdateStackSet to update the stack set template. If you add a parameter to a template, before you can override the parameter value specified in the stack set you must first use UpdateStackSet to update all stack instances with the updated template and parameter value specified in the stack set. Once a stack instance has been updated with the new parameter, you can then override the parameter value using UpdateStackInstances .

(structure)

The Parameter data type.

ParameterKey -> (string)

The key associated with the parameter. If you don’t specify a key and value for a particular parameter, AWS CloudFormation uses the default value that is specified in your template.

ParameterValue -> (string)

The input value associated with the parameter.

UsePreviousValue -> (boolean)

During a stack update, use the existing parameter value that the stack is using for a given parameter key. If you specify true , do not specify a parameter value.

ResolvedValue -> (string)

Read-only. The value that corresponds to a Systems Manager parameter key. This field is returned only for ` SSM parameter types <https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/parameters-section-structure.html#aws-ssm-parameter-types>`__ in the template.

Shorthand Syntax:

ParameterKey=string,ParameterValue=string,UsePreviousValue=boolean,ResolvedValue=string ...

JSON Syntax:

[
  {
    "ParameterKey": "string",
    "ParameterValue": "string",
    "UsePreviousValue": true|false,
    "ResolvedValue": "string"
  }
  ...
]

--operation-preferences (structure)

Preferences for how AWS CloudFormation performs this stack set operation.

RegionOrder -> (list)

The order of the Regions in where you want to perform the stack operation.

(string)

FailureToleranceCount -> (integer)

The number of accounts, per Region, for which this operation can fail before AWS CloudFormation stops the operation in that Region. If the operation is stopped in a Region, AWS CloudFormation doesn’t attempt the operation in any subsequent Regions.

Conditional: You must specify either FailureToleranceCount or FailureTolerancePercentage (but not both).

FailureTolerancePercentage -> (integer)

The percentage of accounts, per Region, for which this stack operation can fail before AWS CloudFormation stops the operation in that Region. If the operation is stopped in a Region, AWS CloudFormation doesn’t attempt the operation in any subsequent Regions.

When calculating the number of accounts based on the specified percentage, AWS CloudFormation rounds down to the next whole number.

Conditional: You must specify either FailureToleranceCount or FailureTolerancePercentage , but not both.

MaxConcurrentCount -> (integer)

The maximum number of accounts in which to perform this operation at one time. This is dependent on the value of FailureToleranceCount . MaxConcurrentCount is at most one more than the FailureToleranceCount .

Note that this setting lets you specify the maximum for operations. For large deployments, under certain circumstances the actual number of accounts acted upon concurrently may be lower due to service throttling.

Conditional: You must specify either MaxConcurrentCount or MaxConcurrentPercentage , but not both.

MaxConcurrentPercentage -> (integer)

The maximum percentage of accounts in which to perform this operation at one time.

When calculating the number of accounts based on the specified percentage, AWS CloudFormation rounds down to the next whole number. This is true except in cases where rounding down would result is zero. In this case, CloudFormation sets the number as one instead.

Note that this setting lets you specify the maximum for operations. For large deployments, under certain circumstances the actual number of accounts acted upon concurrently may be lower due to service throttling.

Conditional: You must specify either MaxConcurrentCount or MaxConcurrentPercentage , but not both.

Shorthand Syntax:

RegionOrder=string,string,FailureToleranceCount=integer,FailureTolerancePercentage=integer,MaxConcurrentCount=integer,MaxConcurrentPercentage=integer

JSON Syntax:

{
  "RegionOrder": ["string", ...],
  "FailureToleranceCount": integer,
  "FailureTolerancePercentage": integer,
  "MaxConcurrentCount": integer,
  "MaxConcurrentPercentage": integer
}

--operation-id (string)

The unique identifier for this stack set operation.

The operation ID also functions as an idempotency token, to ensure that AWS CloudFormation performs the stack set operation only once, even if you retry the request multiple times. You might retry stack set operation requests to ensure that AWS CloudFormation successfully received them.

If you don’t specify an operation ID, the SDK generates one automatically.

--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 update stack instances

The following update-stack-instances example retries an update on stack instances in two accounts in two regions with the most recent settings. The specified fault tolerance setting ensures that the update is attempted in all accounts and regions, even if some stacks cannot be updated.

aws cloudformation update-stack-instances \
    --stack-set-name my-stack-set \
    --accounts 123456789012 567890123456 \
    --regions us-east-1 us-west-2 \
    --operation-preferences FailureToleranceCount=3

Output:

{
    "OperationId": "103ebdf2-21ea-xmpl-8892-de5e30733132"
}

Output

OperationId -> (string)

The unique identifier for this stack set operation.