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Overview

This article describes the use of Windows PowerShell Desired State Configuration (DSC).

“PowerShell” refers to both the command-line shell and scripting language designed system administration.

Built on the .NET Framework, Windows PowerShell helps IT professionals and power users control and automate the administration of the Windows operating system and applications that run on Windows.

Windows PowerShell cmdlets (command-lets) enables computers to be managed from the command line, much like Bash on Linux machines.

However, PowerShell offers much more consistence than the various commands added over time by various parties.

  • It reads Excel files natively as well as JSON, XML, and even ASCII.

Open source on Linux and MacOS

From the PowerShell and DSC Team YouTube channel:

This 51-minute series of demos was published Aug 18, 2016.

This article notes Desired State Configuration for Linux and the promise of SSH support arrived in 2014 (several months before Microsoft open sourced .NET and brought .NET Core to Linux). But “you had to author your scripts on the Windows platform, you had to configure things on the Windows platform and then deliver the desired configuration to a Linux box and have it be configured; now you can do all of that on Linux.”

On August 18 2016, PowerShell became open-source at
https://github.com/PowerShell/PowerShell.

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Noteworthy pages in the FAQ:

  • https://blogs.msdn.microsoft.com/kebab/2013/06/09/an-introduction-to-error-handling-in-powershell/
  • http://ss64.com/ps/syntax.html
  • https://github.com/PoshCode/PowerShellPracticeAndStyle

Deploy as MOF

MOF is a file extension for a Windows Management Object file format.

MOF files created in the Managed Object Format have syntax based on Microsoft Visual C++.

MOF files can be compiled into the Windows Management Instrumentation (WMI) repository using mofcomp.exe.

MOF files often have a partner DLL (dynamic link library) file that stores data needed for retrieval in the MOF file.

Chef incorporates DSC

Resources

Windows PowerShell 4.0 introduces Desired State Configuration (DSC),

http://stackoverflow.com/questions/8153750/how-to-search-a-string-in-multiple-files-and-return-the-names-of-files-in-powers How to search a string in multiple files and return the names of files in Powershell

Infrastructure as Code

Ravikanth Chaganti (MVP) (of PowerShell Magazine and book PowerShell Desired State Configuration Revealed) notes that “Infrastructure as Code” requires:

  • Reusable automation
  • Source Control
  • Unit Testing
  • Continuous Deployment
  • Integration tests, which validate the desired state
  • Operations Validation, which validates the functionality at desired state!

Operation Validation Framework

https://github.com/PowerShell/Operation-Validation-Framework
runs

Get-Command -Module OperationValidation

It has two functions:

Get-OperationValidation to Retrieve operational tests from modules

Invoke-OperationValidation to run operational tests from modules

Additionally

http://kunaludapi.blogspot.in/2015/09/multiple-ways-to-install-software.html

More on API Microservices

This is one of a series:

More on DevOps

This is one of a series on DevOps:

  1. DevOps_2.0
  2. User Stories for DevOps

  3. Git and GitHub vs File Archival
  4. Git Commands and Statuses
  5. Git Commit, Tag, Push
  6. Git Utilities
  7. Data Security GitHub
  8. GitHub API
  9. TFS vs. GitHub

  10. Choices for DevOps Technologies
  11. Java DevOps Workflow
  12. AWS DevOps (CodeCommit, CodePipeline, CodeDeploy)
  13. AWS server deployment options

  14. Digital Ocean
  15. Cloud regions
  16. AWS Virtual Private Cloud

  17. Azure Cloud Onramp
  18. Azure Cloud
  19. Azure Cloud Powershell

  20. Powershell Ecosystem
  21. Powershell on MacOS
  22. Powershell Desired System Configuration

  23. Jenkins Server Setup
  24. Jenkins Plug-ins
  25. Jenkins Freestyle jobs
  26. Jenkins2 Pipeline jobs using Groovy code in Jenkinsfile

  27. Dockerize apps
  28. Docker Setup
  29. Docker Build

  30. Maven on MacOSX

  31. Ansible

  32. MySQL Setup

  33. SonarQube static code scan

  34. API Management Microsoft
  35. API Management Amazon

  36. Scenarios for load