CODEWITHSUNDEEP
powershellremoting
Parveen Kumar
Parveen Kumar

Reputation: 449

PowerShell Remoting Collecting Performance Counters

I have downloaded PowerShell script from below link.

https://gallery.technet.microsoft.com/scriptcenter/PowerShell-Perfmon-0f013da8

I am able to run this script successfully on local machine but facing issue on remote machine. I updated below code 

(Get-Counter -ComputerName $ComputerName -Counter (Convert-HString -HString $Counter) -SampleInterval 2 -MaxSamples 10).counterSamples

to following.

(Invoke-Command -ComputerName $ComputerName -ScriptBlock {Get-Counter -Counter (Convert-HString -HString $Counter) -SampleInterval 2 -MaxSamples 10}).counterSamples

Now I am getting below error.

The term 'Convert-HString' is not recognized as the name of a cmdlet, function, script file, or operable program.

Upvotes: 0

Views: 550

Answers (1)

scrthq
scrthq

Reputation: 1076

The function doesn't exist on the remote computer you are trying to run it in. You need to paste the full function in your scriptblock prior to calling it so it has it loaded when it attempts to run it. With Invoke-Command / anything involving a PSSession on another machine, you're running in the context of that machine. If you load a function/module/variable on your local machine, it only exists on your local machine.

Edit: Updated to allow $Counter to be set on the local machine, then passed into the -ScriptBlock by using Invoke-Command's -ArgumentList param and parameterizing the scriptblock

Example:

(Invoke-Command -ComputerName $ComputerName -ScriptBlock {
    Param
    (
    [parameter(Mandatory=$false,Position=0)]
    [String]
    $Counter
    )
    function Global:Convert-HString {      
        [CmdletBinding()]            
        Param             
        (
            [Parameter(Mandatory = $false,
                ValueFromPipeline = $true,
                ValueFromPipelineByPropertyName = $true)]
            [String]$HString
        )#End Param

        Begin {
            Write-Verbose "Converting Here-String to Array"
        }#Begin
        Process {
            $HString -split "`n" | ForEach-Object {

                $ComputerName = $_.trim()
                if ($ComputerName -notmatch "#") {
                    $ComputerName
                }    


            }
        }#Process
        End {
            # Nothing to do here.
        }#End

    }#Convert-HString
    Get-Counter -Counter (Convert-HString -HString $Counter) -SampleInterval 2 -MaxSamples 10
} -ArgumentList $Counter).counterSamples

Upvotes: 1

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