system.run powershell script not returning values

[aitor555]

Hello,

I am running the following powershell script to get drive E: fragmentation percentage:

$drive = Get-WmiObject -Class Win32_Volume -Filter "DriveLetter = 'E:'"
$result = $drive.DefragAnalysis()
if ($result.ReturnValue -eq 0)
{
$result.DefragAnalysis.FilePercentFragmentation
}

Zabbix Item:
system.run[powershell.exe -command c:\zabbix\scripts\fragmentacion_e.ps1]

It works OK but when I try to get the same info for drive C: I get no value. I have run the script directly in the machine I am monitoring and it works OK.

I have also checked agent log (LogRemoteCommands=1) and the script is executed but no value is displayed in Zabbix "Latest data".

Any ideas?

Thanks in advance.

[coreychristian]

Is the script timing out?

One thing to check, would be if the script takes a lot longer to respond when querying the C drive vs the E drive. You would need to look at the timeout settings on the zabbix server and agent.

[aitor555]

Hello coreychristian,

I changed the agent timeout to 30 before running my first powershell script. I don't know how to change it on the server.
When I run the scripts in the target server it takes similar time for both drives.

I tested to redirect script output to a text file to check whether the script is executed by zabbix agent correctly and it works OK:

$result.DefragAnalysis.FilePercentFragmentation >> fragmentation_drive_c.txt

I can't figure out what is the problem.

Thank you.

[aitor555]

Changing server timeout solved the issue.

Thanks coreychristian.

[seanwasere]

I got it to work by adding

Write-Output $result

to the end of your script.

so it now looks like

$drive = Get-WmiObject -Class Win32_Volume -Filter "DriveLetter = 'E:'"
$result = $drive.DefragAnalysis()
if ($result.ReturnValue -eq 0) {
    $result.DefragAnalysis.FilePercentFragmentation
}
Write-Output $result