A Technical I.T./DevOps Blog
Part 1
Problem scenario: You have a PowerShell function that should add two parameter numbers and display their sum. It is displaying the input when it should not. No sum is being displayed. There are no error messages. What should you do?
Solution: Your code may look like this:
function contint ($a, $b) {
$c = $a + $b
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Goal: To use a diskpart.exe script (a file of commands that could be ran interactively in sequence).
Problem: When you run this command via PowerShell it does not work: diskpart /s C:\Full\Path\script.txt
The result says something like “Microsoft DiskPart …” and there is a list of alphabetic diskpart subcommands (ACTIVE to RECOVER). There is no explicit error. The diskpart command and script does no work.
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Goal: You want to run a .ps1 file.
Problem: You get the error “Powershell : script : The term ‘script’ is not recognized as the name of a cmdlet, At line:1 char:1 + …”
Solution: Use the “script” resource section inside of a DSC configuration exclusively. It will not work or run as a standalone PowerShell script. Scripts with GetScript, SetScript, and TestScript must be run as part of a DSC configuration.
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Continue reading “How To Solve the PowerShell Error “The term ‘script’ is not recognized…””
Goal: Apply DSC configuration
Problem/scenario: When you run the “start-dscconfiguration NameOfConfig -wait -verbose” (where NameOfConfig is the name of the configuration) from the folder that houses the subfolder with NameOfConfig, you get an error like this: “Get-targetresource PS module does not implement the key property solution”
Solution: Stop a specific process by running this command.
gps wmi* |? {$_.Modules.ModuleName -like ‘*DSC*’} | Stop-Process -Force
Re-run the “start-dscconfiguration NameOfConfig -wait -verbose” command.
Problem scenario
You are using Windows Server 2019. You want to create a new local user. You don’t want the user to be a member of the local Administrators group (which allows remote logins). What do you do?
Solution
Prerequisites
i. Install DSC. If you need assistance, see this posting.
ii.a. Make sure the server has been added to its own TrustedHosts configuration settings.
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Problem scenario
You run a Start-DscConfiguration command in PowerShell like this:
Start-DscConfiguration -Path . -Wait -Verbose
You get an error message that the installation failed. The message may say something like this:
Start-DscConfiguration : The computer name was not specified and the configuration directory does not have any configuration files.
CategoryInfo : NotSpecified … ArgumentException
FullyQualifiedErrorId : System.ArgumentException,
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Background: DSC is a toolkit of PowerShell cmdlets that enable you to do configuration management. It can allow you to do CM tasks with Windows and Linux machines (https://msdn.microsoft.com/en-us/powershell/dsc/LnxGettingStarted).
Problem/Scenario: You are trying to use this PowerShell command (e.g., to test your Desired State Configuration tool):
Enter-PSSession -ComputerName goodServer -Credential jdoe
# where goodServer is a Windows server on the network and jdoe is a local user account on the goodServer machine.
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Continue reading “Troubleshooting DSC for Configuration Management (Problem and Solution)”
While as of right now, there is not a great way to install Ansible on Windows servers (because you have to install cygwin). Ansible running on Linux can readily configure Windows servers and push files down to them. There are some things to look out for when setting this up. It is not overly documented on Ansible’s website. Some documentation (on various websites) tells DevOps engineers (or the professional using Ansible) to use a windows.yml file in a group_vars directory.
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