CAlling a function with parameters is failing

PowerShell Help
1

I have a simple function which takes 2 arguments.

When I call the function like this, it throw the error. I am sure I am doing a mistake the way I am passing parameters.

PS D:\scripts> .\Validate-QRM-HPC.ps1 AWDWQRMHEAD01 D:\FHLBScripts\log\Log-QRM-HPC-Validation.txt
Validate-HPC : Cannot bind argument to parameter ‘aQRMHeadNodeName’ because it is an empty string.
At D:\scripts\Validate-QRM-HPC.ps1:87 char:15

  • Validate-HPC $aQRMHeadNodeName $logfile
  •           ~~~~~~~~~~~~~~~~~
    • CategoryInfo : InvalidData: (:slight_smile: [Validate-HPC], ParameterBindingValidationException
    • FullyQualifiedErrorId : ParameterArgumentValidationErrorEmptyStringNotAllowed,Validate-HPC
      Add-PSSnapIn Microsoft.HPC
      Import-Module AWSPowerShell

Write-Log Function makes it easy to write messages to a log file that is parseable and based on a standard log format

Function Write-Log {
[CmdletBinding()]
Param(
[Parameter(Mandatory=$True)]
[string]
$Message,

[Parameter(Mandatory=$False)]
[ValidateSet("INFO","WARN","ERROR","FATAL","DEBUG")]
[String]
$Level = "INFO",


[Parameter(Mandatory=$False)]
[string]
$logfile
)

$Stamp = (Get-Date).toString("yyyy/MM/dd HH:mm:ss:fff")
$Line = $Stamp + "," +  $Level  + "," + '"' + $Message + '"'
If($logfile) {
    Add-Content $logfile -Value $Line
}
Else {
    Write-Output $Line   # used when a logfile name is not passed to Write-Log, Write to the Standard Output, the console.
}

}

Function Validate-HPC {

[CmdletBinding()]
Param(
[Parameter(Mandatory=$True)]
[string]  $aQRMHeadNodeName,

 [Parameter(Mandatory=$True)]
[string]
$logfile

)

try{
   
    $logMsg = "Validating HPC Cluster " + $aQRMHeadNodeName

    Write-Log $logMsg "INFO" $logfile
    
    $aclusterOutput = Get-HpcClusterOverview -Scheduler $aQRMHeadNodeName -Verbose

    $logMsg =  -join ( "HPC Cluster Validation Completed ", "ClusterName: ", $aclusterOutput.ClusterName, " Total Node Count: ", $aclusterOutput.TotalNodeCount , " Total Ready Nodes: ", $aclusterOutput.ReadyNodeCount)

   
    Write-Log $logMsg "INFO" $logfile 

}
Catch{

    $ErrorMessage = $_.Exception.Message

    $FailedItem = $_.Exception.ItemName

    $logMsg = "Exception Message: HPC Host name supplied is : " +$aQRMHeadNodeName + $_.Exception +  " with Failed Item: " +  $FailedItem 
 
    Write-Log $logMsg "FATAL" $logfile

}

}

Validate-HPC $aQRMHeadNodeName $logfile

2

In your call to the function: name the parameters you are passing values to. The second parameter needs to be one of the enumerated in ValidateSet.

3

Hi Jason,

Just from whats on offer here, it looks like you are trying to call the script and not the function. Should it not be

Validate-HPC -aQRMHeadNodeName "AWDWQRMHEAD01" -logfile "D:\FHLBScripts\log\Log-QRM-HPC-Validation.txt"