Hi, I have a pretty straight forward Powershell script:

$variable = do something

If ($variable -eq "Something 1"){
write-host "0:All Good"
exit 0}
Elseif ($variable -eq "Something 2"){
write-host "1:Not so good"
exit 1}
Else {exit 1}

If I run such a script directly on a server, the if/elseif's are processed correctly.

If I run this same script as a Custom EXE sensor, I never seem to get past the first IF statement.

Any ideas?

Article Comments

What errors do you get? Or are you stuck with All is good?


Aug, 2015 - Permalink

No errors. If the $variable equals something that should trigger the ELSEIF statement, PRTG persists on returning "All is good". The sensor is green and responding like nothing is wrong.

If I run it directly on the server being monitored, powershell correctly reports "Not so good" indicating that the logic of the script is correct.


Aug, 2015 - Permalink

What parameters do you pass to it in the sensor configuration?


Aug, 2015 - Permalink

Nothing but -hostname %host. Here's the script:

param (
	[string]$hostname
	)

$LogonMode = Invoke-Command { Add-PSSnapin Citrix.XenApp.Commands; $(Get-XAServer -ServerName $hostname).LogonMode } -ComputerName $hostname | Select -Expand Value

If ($LogonMode -eq "AllowLogOns")
{write-host "0:All Logons Allowed"
exit 0}
ElseIf ($LogonMode -eq "ProhibitNewLogOnsUntilRestart")
{write-host "1:Prohibit Logons Until Server Restart"
exit 1}
ElseIf ($LogonMode -eq "ProhibitNewLogOns")
{write-host "2:Prohibit Logons Only"
exit 1}
ElseIf ($LogonMode -eq "ProhibitLogOns")
{write-host "3:Prohibit Logons and Reconnections"
exit 1}
Else
{exit 1}

It's simply identifying the logon mode of a XenApp server. If I run this directly on a XenApp server, the ELSEIF's are processed correctly according to its actual logon mode.

When prtg runs it, it constantly stops at "0:All Logons Allowed".


Aug, 2015 - Permalink

Hi Stan,

Can you try the following: http://pastebin.com/raw.php?i=spaxSS4e It works, when I set the logonmode manually to the corresponding strings. Also, looks a bit better than the if statements :)


Aug, 2015 - Permalink

It works...but something doesn't like the $hostname variable.

If I specify "-hostname %host" in the parameters field of the sensor, it always returns back 'Allow logons'.

If I edit the .ps1 and replace $hostname with the name of the actual server, the sensor works as expected.


Aug, 2015 - Permalink

Strange...what's the actual hostname?


Aug, 2015 - Permalink

Call it "server1".

I have some other sensors which use the invoke-command to run other XenApp commands, these too also use the $hostname variable in the script. I pass it via the same "-hostname %host" parameter in the sensor without error.


Aug, 2015 - Permalink

Hm...really not sure what's causing this - What's the content of $LogonMode - is it possible that its a PSObject and you'll need to access a property of it, not the object itself? That should explain, why it's stuck on the first...


Aug, 2015 - Permalink