I have a very simple powershell script. In a function is some logic and the return value of the function should be the exit code for the script. For the result 0 and 1 (ok and warning) the script works well, but if the function returns 2 (Error) I get no result in PRTG. The returned message is shown as "2 :2 RL disabled!" and the last value is empty! What is the reason for this behaviour? I hope it is reproducable for you.

The script:

[int]$retvalue = 0
[string]$retmsg = "Dummy"

function TestFunction()
{
	[int]$myretvalue=0
	$retmsg=""
	$countDisabled=2
	
	#... here comes some logic ...
	
	if($countDisabled -eq 0)	{ 
		$script:retmsg = "All enabled"
		$myretvalue = 0
	}
	else {
		$script:retmsg = ("{0} RL disabled") -f $countDisabled
		$myretvalue = 2 # 0 or 1 works, 2 not!
	}
	return $myretvalue
}

$retvalue=TestFunction

$output = ("{0} :{1}") -f $retvalue,$retmsg
Write-Host $output
exit $retvalue

Article Comments

Attention: This article is a record of a conversation with the Paessler support team. The information in this conversation is not updated to preserve the historical record. As a result, some of the information or recommendations in this conversation might be out of date.

By design, PRTG does not accept values from sensors in a Down status. This is because a down status is considered a major outage and no values are expected in such a case.

If you still want to receive values in your custom sensor, please do not use the return value 2.


Oct, 2011 - Permalink

Or as an alternative, if you need that values, try to modify you scrip so it can be used as an exexml sensortype:

So add this to your Script, before the exit command:

$CHANNELNAME= "name your channel"

"<prtg>"
"<result>"
"<channel>" 
   "$CHANNELNAME" 
"</channel>"
"<value>" 
   "$retvalue" 
"</value>"
"</result>"
"</prtg>"

and replace "exit $retvalue" by "exit 0"

Finally, after you have the sensor working in prtg, let prtg make the decision how to deal with the channel value (config in sensors channeltab).


Nov, 2011 - Permalink