Powershell Desired State Configuration (Contd..)

DSC Configuration files

• DSC Configuration script file is a powershell script file (.ps1) that defines a special type of function Configuration

# First we declare the configuration
Configuration HelloDsc 
{
  # Then we need to declare where we want to run the Configurarion
  Node "localhost" 
  {
    # Then we declare the desired state using DSC Resources
    Log MyMessage
    {
       Message = "Hello, Welcome to the World of DSC"
    }
  }

}

# Compile the configuration file
HelloDsc

• Authoring DSC Configuration requires us to understand
  • DSC automatic Variables
  • Configuration Data
  • Configuration file
  • DSC Resources
• To author the DSC Configuration, we need to defined the state and state definition at the lowest (atomic) level is done by DSC Resource
• DSC resources are Powershell modules that contain both the schema and implementation to determine and set the state on target Node
• Execute Get-DSCResource on the node
• Lets write a dsc configuration to install iis server on Target node
• Let try to find about one resource WindowsFeature Refer Here
• To Import DSC Resource Refer Here
• Refer Here for the changes made
• For Built in resources Refer Here refer to section windows built in resources

Configuration Data

• DSC Configuration Data
• Refer Here for the changes done