dsc config set

Article
06/24/2024

Synopsis

Enforces the desired state of resource instances in a configuration document.

Syntax

Configuration document from stdin

<document-string> | dsc config set [Options]

Configuration document from option string

dsc config set [Options] --document <document-string>

Configuration document from file

dsc config set [Options] --path <document-filepath>

Description

The set subcommand enforces the desired state of the resource instances in a configuration document. When this command runs, DSC validates the configuration document before invoking the test operation for each resource instance defined in the document. DSC then invokes the set operation for each resource instance that isn't in the desired state.

The configuration document must be passed to this command as JSON or YAML over stdin, as a string with the document option, or from a file with the path option.

Examples

Example 1 - Set a configuration's resource instances to the desired state

The command inspects the resource instances defined in the configuration document saved as example.dsc.config.yaml and sets them to the desired state as needed.

# example.dsc.config.yaml
$schema: https://raw.githubusercontent.com/PowerShell/DSC/main/schemas/2024/04/config/document.json
resources:
- name: Windows only
  type: Microsoft.DSC/Assertion
  properties:
    $schema: https://raw.githubusercontent.com/PowerShell/DSC/main/schemas/2024/04/config/document.json
    resources:
    - name: os
      type: Microsoft/OSInfo
      properties:
        family: Windows
- name: Current user registry example
  type: Microsoft.Windows/Registry
  properties:
    keyPath: HKCU\example
    _exist: true
  dependsOn:
    - "[resourceId('Microsoft.DSC/Assertion', 'Windows only')"

cat ./example.dsc.config.yaml | dsc config set

Example 2 - Passing a file to read as the configuration document

The command uses the path option to enforce the configuration defined in the example.dsc.config.yaml file.

dsc config set --path ./example.dsc.config.yaml

Example 3 - Passing a configuration document as a variable

The command uses the document option to enforce the configuration stored in the $desired variable.

dsc config set --document $desired

Options

-d, --document

Specifies the configuration document to enforce state for. The document must be a string containing a JSON or YAML object. DSC validates the document against the configuration document schema. If the validation fails, DSC raises an error.

This option can't be used with configuration document over stdin or the --path option. Choose whether to pass the configuration document to the command over stdin, from a file with the --path option, or with the --document option.

Type:      String
Mandatory: false

-p, --path

Defines the path to a configuration document to enforce state for instead of piping the document from stdin or passing it as a string with the --document option. The specified file must contain a configuration document as a JSON or YAML object. DSC validates the document against the configuration document schema. If the validation fails, or if the specified file doesn't exist, DSC raises an error.

This option is mutually exclusive with the --document option. When you use this option, DSC ignores any input from stdin.

Type:      String
Mandatory: false

-w, --what-if

When you specify this flag option, DSC doesn't actually change the system state with the set operation. Instead, it returns output indicating how the operation will change system state when called without this option. Use this option to preview the changes DSC will make to a system.

The output for the command when you use this option is the same as without, except that the ExecutionType metadata field is set to WhatIf instead of Actual.

Type:      Boolean
Mandatory: false

-f, --format

The --format option controls the console output format for the command. If the command output is redirected or captured as a variable, the output is always JSON.

Type:         String
Mandatory:    false
DefaultValue: yaml
ValidValues:  [json, pretty-json, yaml]

-h, --help

Displays the help for the current command or subcommand. When you specify this option, the application ignores all options and arguments after this one.

Type:      Boolean
Mandatory: false

Output

This command returns JSON output that includes whether the operation or any resources raised any errors, the collection of messages emitted during the operation, and the set operation results for every instance. For more information, see dsc config get result schema.

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