CONFIGURATION MANAGEMENT ON WINDOWS SERVERDesired State Configuration

DECLARATIVE CONFIGURATION MANAGEMENT

Provisioning Verification Iterative Development

DESIRED STATE CONFIGURATION

Platform Feature – Not a product API over Open Standards

So why do you need to know this stuff? DSC can run standalone Be able to build composite configurations Be able to build custom resources

DESIRED STATE CONFIGURATION

Local Configuration Manager Configurations Resources

LOCAL CONFIGURATION MANAGER

AllowModuleOverwrite CertificateID ConfigurationID ConfigurationMode ConfigurationModeFrequencyMins Credential DownloadManagerCustomData DownloadManagerName RebootNodeIfNeeded RefreshFrequencyMins RefreshMode

CONFIGURATIONS

Declarative-ish New keywords – configuration and node Dynamic keywords (from resources) Plus all the richness of PowerShell when you

need it

LAB DETAILS

User – localhost\administrator Password – Cascadia!

Wireless network – DoinDSC Wireless password – Cascadia2014

Available machines 172.18.20.12 172.18.20.13 172.18.20.14 172.18.20.15 172.18.20.16 172.18.20.17

CONFIGURATIONS

Configuration MyLocalConfig {

Node localhost {

File SomeConfigFile {…}}

}

CONFIGURATIONS

Separate your environment from your data

How? With ConfigurationData

COMPOSITE CONFIGURATIONS

Configurations can use other configurations like resources.

Configurations are just like functions... They can have parameters.

Composite configurations are a way to logically group resources.

APPLYING CONFIGURATIONS

Send-DscConfiguration

TROUBLESHOOTING CONFIGURATIONS

cDscDiagnostics module

RESOURCES

WMI - based PowerShell - based

RESOURCES

WMI - Three methods GetTargetResource SetTargetResource TestTargetResource

RESOURCES

Powershell-based resources They reside in a module under a subfolder

DscResources They are modules themselves with three

functions Get-TargetResource Set-TargetResource Test-TargetResource

RESOURCES

Resources reside in modules on PSModulePath

Defaults are $pshome/modules $env:programfiles/windowspowershell/modules

OTHER STUFF

Pull Server SMB vs REST Workflow Source Control

DOCS AND RESOURCES

Github.com/powershellorg/ebooks Blogs.msdn.com/b/powershell Github.com/powershellorg/dsc Version Control By Example – ebook by Eric

Sink