I have a total of 3 servers with 2 folders on each server that have an .exe I need to execute from their respective locations. Below is my current code. What is happening is the output is showing the code gets run but when I log into those servers, the .exe is not running. However, every time the last node works perfectly fine. I'm lost.
Here is my current code:
Foreach ($server in $NodeArray) {
# $NodeArray consists of server1, server2 and server3
$Session = New-PSSession -ComputerName $server -Authentication Negotiate -Credential $HPCSlaveCreds -ErrorAction Stop
$Scriptblock = {
param ($MasterNode, $ControlFile)
$FolderName = (Get-ChildItem 'C:\HPC' | select -last 1).name
$Path = (Get-ChildItem "C:\HPC\$FolderName" -Recurse -Filter "Agent*").Name
foreach ($agent in $Path) {
$PestArguments = "$ControlFile /H ${MasterNode}:4004"
Write-Host "Starting Beopest on $env:COMPUTERNAME - $PestArguments"
Start-Process -FilePath "pestpp-ies.exe" -WorkingDirectory "C:\HPC\$FolderName\$agent" -ArgumentList $PestArguments
}
}
Invoke-Command -Session $Session -ScriptBlock $ScriptBlock -ArgumentList $MasterNode, $ControlFile
}
Any help would be greatly appreciated!
Related
See below a simplified version of my PowerShell code.
$cred = Import-Clixml d:\cred.xml
Invoke-Command -ComputerName $computer -Authentication Credssp -Credential $cred -InDisconnectedSession -SessionOption #{OutputBufferingMode="Drop";IdleTimeout=2147483647} -Scriptblock {
$start_job = Start-Job -Scriptblock {
foreach ($user in $list) {
$a = Get-ChildItem -LiteralPath $user -Recurse -Force
Write-Output "$a.Count" | Out-File c:\test.log -Append
} -ArgumentList $list
}
I would send a list of maybe 30 names but after a few minutes of scanning the operations would stop without any error reported, it seems as if the Start-Job is blocked or suspended as the Invoke-Command is still running.
any idea on how to check or bypass this limitation?
I am trying to run a script that searches/downloads/installs windows updates on remote computers using WinRM. I am running this script as a domain user with Admin access. However, I get an ACCESS Denied error.
Now, I have the script copied over to the remote servers but I am unable to view output to see whether the script is running or not.
OUTPUT I want to see:
# Continue running on other servers on error
$ErrorActionPreference = "Continue"
# Server list
$servers = Get-Content "C:\Users\admin\Desktop\vm-nonprod.txt"
# Logs
$log = "C:\Users\admin\Desktop\log-nonprod.txt"
# Path to script on server list
$scriptpath = "C:\Patch.ps1"
$results = #()
foreach ($server in $servers) {
try {
$Credential = Import-CliXml -Path "C:\Users\admin\Desktop\admin.Cred"
#New-PSSession -ComputerName $server -Credential $Credential
Invoke-Command -ComputerName $server -Credential $Credential -ScriptBlock {$scriptpath} -ArgumentList "Y" | Out-File -FilePath C:\Users\admin\Desktop\WinPatch.txt
#Invoke-Command -ComputerName $server -Credential hhq\admin -FilePath "C:\Users\admin\Documents\Patch.ps1"
#Copy-Item -Path C:\Users\admin\Documents\Patch.ps1 -Destination 'C:\' -ToSession (New-PSSession –ComputerName $server -Credential $Credential)
}
catch {
Write-Output ("Error running script on remote host: " + $server)
}
}
$results | Export-Csv -NoTypeInformation $log
There's a few issues here.
Does the script exist on the server?
Sounds like yes, you have Patch.ps1 in C:\ on each $server
The scriptblock does not run the script - just prints the variable.
To run it, change {$scriptpath} to {. $scriptpath} or {& $scriptpath}
The variable $scriptpath is not in the scriptblock scope - you will have to pass it in the -ArgumentList
Change: {$scriptpath} -ArgumentList "Y"
____To: {param($p); . $p} -ArgumentList $scriptpath
The argument "Y" is being passed to the scriptbock, not the script. The scriptblock is not looking for it, so this value is being lost.
Assume you want it to be passed to the script - this needs to be done in the scriptblock:
{$scriptpath "Y"}
I would recommend getting rid of Out-File until you are happy with the output in the console.
Putting it all together:
-ScriptBlock {$scriptpath} -ArgumentList "Y" | Out-File -FilePath C:\Users\admin\Desktop\WinPatch.txt
-ScriptBlock {param($p); . $p "Y"} -ArgumentList $scriptpath
I believe you have the wrong Invoke-Command commented out. The one that is running only has the user name hhq\admin in the credential parameter. It might be failing due to that because it would be prompting for the password during run-time.
I'm trying to get some information from several machines on the network but I get loads of entries of the local machine.. for each entry in the text file I get an entry from the local machine.
Any idea where I'm going wrong.. winrm is configured on the remote machines and running.
$Username = Read-Host "Please enter Username"
$Password = read-host "please enter Password"
$pass = ConvertTo-SecureString -AsPlainText $Password -Force
$Cred = New-Object System.Management.Automation.PSCredential -ArgumentList $Username,$pass
$computers = gc c:\test\file.txt
foreach ($Computer in $computers)
{
Invoke-command -ComputerName $computers -credential $cred -ErrorAction Stop -ScriptBlock {Invoke-Expression -Command:"cmd.exe /c 'ipconfig'" | out-file c:\test\output.txt -append}
}
cls
Thanks in advance :)
Invoke-Command will take an array for the ComputerName param so you can use $computers instead of using a foreach loop (assuming that you have one computer name per-line in the file).
I've also used Get-Credential to prompt for the full credential in one go rather than asking for username and password individually.
$Cred = Get-Credential
$computers = Get-Content c:\test\file.txt
Invoke-Command -ComputerName $computers -Credential $cred -ErrorAction Stop -ScriptBlock {Invoke-Expression -Command:"cmd.exe /c 'ipconfig'" | Out-File c:\test\output.txt -Append}
The reason you are only seeing a single computers info in c:\test\output.txt is because the output of the the ipconfig command is being saved to the remote computer... so you will have a c:\test\output.txt file on each computer you run the command against.
EDIT:
To take the output of each remote command and save it to your local computer just move the Out-File outside the Invoke-Command like this:
$Cred = Get-Credential
$computers = Get-Content c:\test\file.txt
Invoke-Command -ComputerName $computers -Credential $cred -ErrorAction Stop -ScriptBlock {Invoke-Expression -Command:"cmd.exe /c 'ipconfig'"} | Out-File c:\test\output.txt -Append
The issue is you are iterating one by one but you are not passing one by one to the invoke-command, $computer will have each value at a time in the foreach loop.
Instead of this:
foreach ($Computer in $computers)
{
Invoke-command -ComputerName $computers -credential $cred -ErrorAction Stop -ScriptBlock {Invoke-Expression -Command:"cmd.exe /c 'ipconfig'" | out-file c:\test\output.txt -append}
}
Do this:
foreach ($Computer in $computers)
{
Invoke-command -ComputerName $computer -credential $cred -ErrorAction Stop -ScriptBlock {Invoke-Expression -Command:"cmd.exe /c 'ipconfig'" | out-file c:\test\output.txt -append}
}
Further improvement:
You do not have to give Invoke-Expression -Command:"cmd.exe /c 'ipconfig'"
Instead of this,you can directly use ipconfig inside the scriptblock.
The requirement is to extract the server name one by one and check the AppPool status, if that is found to be stopped, make it running. below code is not helping out.
$ErrorActionPreference = "Continue"
$status = gc -path "D:\Servers\server.txt"|ForEach-Object (invoke-command -ComputerName $_ -ScriptBlock {Import-Module Webadministration Get-WebAppPoolState -name (gc "D:\AppPool.txt")})
if ($status.value -eq "Started")
{
Write-Host ("ApppPool already running")
}
else
{
Invoke-Command -ScriptBlock {Start-WebAppPool}
Write-host ("AppPool has started successfully")
}
There were multiple problems with your code, I've gone through them individually so you can see what was stopping it from working correctly.
The syntax for foreach was wrong, you needed to use {} not () in this case. Normal brackets are only used like this ForEach ($number in $numArray ) {CODE} which you aren't.
You were checking $status outside the foreach loop - so it so was evaluating $status only once (with the final computers AppPool status) rather than for each computer.
Your second Invoke-Command didn't have a ComputerName parameter specified so was only running the command locally not against the remote computer, meaning the AppPool would never be started.
As you were specifying the AppPool name using gc "D:\AppPool.txt" this file would have to be present on every remote computer for it to work. I've changed this to be passed into the command as an argument so the file only needs to be on the computer running the script.
$Credentials = Get-Credential
$AppPools = Get-Content "D:\AppPool.txt"
$Servers = Get-Content -Path "D:\Servers\server.txt"
ForEach ($Server in $Servers) {
ForEach ($AppPool in $AppPools) {
$AppPoolState = Invoke-Command -ComputerName $Server -ScriptBlock {Import-Module WebAdministration; Get-WebAppPoolState -Name $args[0] } -ArgumentList $AppPool -Credential $Credentials
if ($AppPoolState.Value -eq "Started")
{
Write-Host "$AppPool AppPool already running on $Server"
}
else
{
Invoke-Command -ComputerName $Server -ScriptBlock {Start-WebAppPool -Name $args[0] } -ArgumentList $AppPool -Credential $Credentials
Write-Host "$AppPool AppPool started on $Server"
}
}
}
Note: I run a non-privileged account so have to supply Credentials. If the account you're running the script as has appropriate permissions to all the remote computers you can remove the three Credentials references.
I am trying to read strings in a remote registry. When I run the script I am working on, it connects to the workstation in the list, but it only reads the local computer when running, not the remote. any Ideas?
#create open dialog box
Function Get-FileName($initialDirectory)
{
[void] [Reflection.Assembly]::LoadWithPartialName( 'System.Windows.Forms' );
$d = New-Object Windows.Forms.OpenFileDialog;
$d.ShowHelp = $True;
$d.filter = "Comma Separated Value (*.csv)| *.csv";
$d.ShowDialog( ) | Out-Null;
$d.filename;
}
# Set Variables with arguments
$strFile = Get-FileName;
$strComputer = Get-Content $strFile;
$date = Get-Date -Format "MM-dd-yyyy";
$outputFile = "C:\PowerShell\Reports";
$cred = Get-Credential
foreach($computer in $strComputer)
{
Enter-PSSession $computer -Credential $cred
Set-Location HKLM:\SOFTWARE\Microsoft\Windows\CurrentVersion\Reliability
$systemInfo = Get-Item -Name LastComputerName
Write-Host $systemInfo
}
foreach($computer in $strComputer)
{
Enter-PSSession $computer -Credential $cred
..
..
}
The above code won't work. Enter-PSSession is not for using in a script. Anything written after that in a script won't run.
Instead, use Invoke-Command and pass rest of the script block as a parameter value. For example,
foreach ($computer in $strComputer) {
Invoke-Command -ComputerName $computer -Credential $cred -ScriptBlock {
Set-Location HKLM:\SOFTWARE\Microsoft\Windows\CurrentVersion\Reliability
$systemInfo = Get-Item -Name LastComputerName
Write-Host $systemInfo
}
}
As the comments already explained, Enter-PSSession is for interactive use. To read remote registry entries, there are several ways.
Use plain reg.exe, it works well enough. Like so,
foreach($computer in $strComputers) {
reg query \\$computer\hklm\software\Microsoft\Windows\CurrentVersion\Reliability /v LastComputerName
}
Use PSSessions. Create a session and Invoke-Command to read registry. Like so,
function GetRegistryValues {
param($rpath, $ivalue)
Set-Location $rpath
$systemInfo = (Get-ItemProperty .).$ivalue
Write-Host $systemInfo
}
$session = New-PSSession -ComputerName $computer
Invoke-Command -Session $session -Scriptblock ${function:GetRegistryValues} `
-argumentlist "HKLM:\SOFTWARE\Microsoft\Windows\CurrentVersion\Reliability",`
"LastComputerName"
Remove-PSSession $session
Use .Net classes, Microsoft.Win32.RegistryKey. Like so,
$sk = [Microsoft.Win32.RegistryKey]::OpenRemoteBaseKey([Microsoft.Win32.RegistryHive]::LocalMachine, $server)
$k = $sk.opensubkey("SOFTWARE\Microsoft\Windows\CurrentVersion\Reliability", $false)
write-host $k.getvalue("LastComputerName")