cant get powershell script to run

[Filipp Sudanov]

There is agent configuration parameter ExternalParameterProviderTimeout that sets timeout for external parameters provider execution. By default it's equial to 30 seconds. The behavior you describing might be happening if your script runs longer then 30s.

[Egert143]

Thanks for suggestion, i tested that config parameter but no joy. I think it must be somthing else, because according to logs, script dont even have time to run 30s before '0 value' is returned according to netxms agent.

From agent log:

2020.01.14 09:33:34.573 *I* [                   ] NetXMS Agent started
2020.01.14 09:33:34.575 *D* [                   ] ProcessExecutor::execute(): process "CMD.EXE /C powershell.exe C:\NetXMS\script\test.ps1" started
2020.01.14 09:33:34.575 *D* [                   ] ParamProvider::poll(): started command "powershell.exe C:\NetXMS\script\test.ps1"
2020.01.14 09:33:39.852 *D* [                   ] ParamProvider::poll(): command "powershell.exe C:\NetXMS\script\test.ps1" execution completed, 0 values read

Agent conf file:

#
# NetXMS agent configuration file
# Created by agent installer at Wed Sep  4 14:38:01 2019
#

MasterServers = ip
ConfigIncludeDir = C:\NetXMS\etc\nxagentd.conf.d
LogFile = C:\NetXMS\log\netxms-agent.log
FileStore = C:\NetXMS\var
SubAgent = winperf.nsm
SubAgent = filemgr.nsm
DebugLevel = 5
ExternalParameterProviderTimeout = 60

ExternalParametersProvider=powershell.exe C:\NetXMS\script\test.ps1:300

Script after updating PowerShell to ver 4:

$folder = Get-ChildItem 'D:\a8becad8-6be2-4164-a405-dea4052b3720' -Directory |
    Sort LastWriteTime |
    Select -First 1

$age = ([datetime]::Now - $folder.LastWriteTime).TotalHours
#$age = ([datetime]::Now - $folder.LastWriteTime).Days


if($age -ige 1)
{

    $Output = 'Parameter1=' + $age

}else{

    $Output = 'Parameter1=1'

}

echo $Output

When i change path variable in script to count smaller folder where result will be instant, instead of few seconds then agent gets the value.

Even updated to latest version today.

[Filipp Sudanov]

Yes, right, it's not the timeout, otherwise there would be a message on 4-th debug level:

command "powershell.exe C:\test3.ps1" execution timeout (70 seconds)

Can you increase debug level to 7 and attach the log.

[Egert143]

Debug 7 gave one extra line:

2020.01.14 19:49:10.356 *D* [                   ] ProcessExecutor::execute(): process "CMD.EXE /C powershell.exe C:\NetXMS\script\test.ps1" started
2020.01.14 19:49:10.356 *D* [                   ] ParamProvider::poll(): started command "powershell.exe C:\NetXMS\script\test.ps1"
2020.01.14 19:49:10.357 *I* [                   ] NetXMS Agent started
2020.01.14 19:49:15.569 *D* [                   ] ProcessExecutor::readOutput(): stopped on GetOverlappedResult (The pipe has been ended.)
2020.01.14 19:49:15.569 *D* [                   ] ParamProvider::poll(): command "powershell.exe C:\NetXMS\script\test.ps1" execution completed, 0 values read

[Egert143]

2020.01.14 19:49:15.569 *D* [                   ] ProcessExecutor::readOutput(): stopped on GetOverlappedResult (The pipe has been ended.)

Could that mean script or agent error ? It seems script runs about 5-6 seconds as usual. Also if someone is decent at powershell maybe there is somthing wrong with script itself? I am very beginner in PS

[Egert143]

Seems like it is Bug / error on netxms, did quick and simple test:

Script:

$age = 1500;
Start-Sleep -Milliseconds 4840
$Output = 'Parameter.Name=' + $age
echo $Output

if script ran 4835 ms or more then no result to agent. Anything less and agent received value.

Also "The pipe has been ended." doesent mean error, it comes with 0 or 1 value.

[Filipp Sudanov]

What is your PS and Windows versions?

[Egert143]

Win 7 Pro

$PSVersionTable:

Name                           Value
----                           -----
PSVersion                      4.0
WSManStackVersion              3.0
SerializationVersion           1.1.0.1
CLRVersion                     4.0.30319.42000
BuildVersion                   6.3.9600.16406
PSCompatibleVersions           {1.0, 2.0, 3.0, 4.0}
PSRemotingProtocolVersion      2.2

Currently i have setup where i run PS script with task scheduler and save result into txt file. Then with netxms agent i run a script that reades value out of txt file. That way it stays well under 1 sec runtime and works perfectly. Currently testing in 8 different machines.

ExternalParametersProvider=powershell.exe C:\NetXMS\script\ReturnInfo.ps1:1800

[Tursiops]

Could the issue be the missing quotes?
Try this (not sure about your execution policy, so I added that):

ExternalParametersProvider=powershell.exe -executionpolicy bypass -c "C:\NetXMS\script\ReturnInfo.ps1":1800

Without the quotes, I'm not sure what NetXMS will make out of your C**:**, considering the colon is a separator.

Your original ExternalParameter did not escape the $ character, which needs to be double up, e.g. like this:

ExternalParameter=Custom.Script:powershell -Command "& {Get-ChildItem 'path' | Where { $$_.PSIsContainer } | Sort CreationTime | Select -First 1 | Foreach-Object {$$dtdiff = (New-TimeSpan ($$_.LastWriteTime) $$(Get-Date))}; write-host $$dtdiff.days}"

[Egert143]

Thanks for the reply. In later posts i changed the polling method to script file instead of direct command in agent conf. When i changed script content to simple output where i could change execution time, then depending on run time > 4835ms:error | < 4835ms:good. So i think path variable is working.

$age = 1500;
Start-Sleep -Milliseconds 4840
$Output = 'Parameter.Name=' + $age
echo $Output

Currently working method:

Agent Conf:
ExternalParametersProvider=powershell.exe C:\NetXMS\script\ReturnInfo.ps1:1800

ReturnInfo.ps:

$DataFile = "C:\NetXMS\script\output.txt"

$Array = "";

if (Test-Path -Path $DataFile) {

    $Content = Get-Content $DataFile
    $Array = $Content.split('|');

}


return $Array

Output.txt is generated from different script that is running with task scheduler.