Question

最小问题：

如何在执行以下操作后正确处理留下的远程会话连接：

$session = New-PSSession -ComputerName $VM -Credential $CurrentUser
Invoke-Command -Session $session -ScriptBlock {
    $drive = New-PSDrive -Credential $Using:CurrentUser "dummyDriveName" -Root (Split-Path $Using:TargetPath) -PSProvider "FileSystem" 
    Set-Location $Using:TargetPath
}

Invoke-Command -Session $session -ScriptBlock {
    Remove-PSDrive "dummyDriveName"
}
Remove-PSSession -Session $session

我正在运行看起来大致如此的代码：

$VMs = @(
    "vm1.foo.lan",
    "vm2.foo.lan",
    "vm3.foo.lan"
)

$TargetPath = "\\$env:ComputerName\bar\bin\Debug"

$CurrentUser = (Get-Credential -Credential $env:UserName)
[System.Management.Automation.Runspaces.PSSession[]]$Sessions = @()

foreach ($VM in $VMs) {
    $session = New-PSSession -ComputerName $VM -Credential $CurrentUser
    $Sessions = $Sessions + $session

    Invoke-Command -Session $session -ScriptBlock {
        $drive = New-PSDrive -Credential $Using:CurrentUser "dummyDriveName" -Root (Split-Path $Using:TargetPath) -PSProvider "FileSystem" 
        Set-Location $Using:TargetPath
        #Actually do something here, but it's not relevant ... I can reproduce with this line commented out.
    }
}

# Wait until Target.exe are known to be complete.

foreach ($session in $Sessions) {
    Invoke-Command -Session $session -ScriptBlock {
        Remove-PSDrive "dummyDriveName"
    }
    Remove-PSSession -Session $session
}

我的目的是让一组远程机器调用我的机器上的exe，通过远程共享公开。

从广义上讲，我：

以我自己的身份连接到远程计算机。
捕获该连接。
设置连接我的远程驱动器
- （这是必须避免双跳问题而不诉诸CredSsp请参阅：https://docs.microsoft.com/en-us/powershell/scripting/setup/ps-remoting-second-hop）
做一些事情
重复所有机器。
等到远程进程完成。
重新连接到所有计算机以删除驱动器和连接会话。

最后，我还有：

这些会话似乎最终会衰退，但不可靠，并且它能够使所允许的最大＃个会话饱和，从而导致错误说：

No more connections can be made to this remote computer at this time because there are already as many connections as the computer can accept
+ CategoryInfo          : InvalidOperation: (dummy:PSDriveInfo) [New-PSDrive], Win32Exception
+ FullyQualifiedErrorId : CouldNotMapNetworkDrive,Microsoft.PowerShell.Commands.NewPSDriveCommand
+ PSComputerName        : build7.foo.lan

更新：

感谢@jrider建议Get-SmbSession。在我的其余脚本返回后运行：

PS C:\WorkingDirectoty> Get-SmbSession

SessionId    ClientComputerName ClientUserName NumOpens
---------    ------------------ -------------- --------
773228331225 10.xxx.yyy.89       FOO\MDM        785
773228331233 10.xxx.yyy.60       FOO\MDM        637
773228331245 10.xxx.yyy.89       FOO\MDM        239
773228331253 10.xxx.yyy.54       FOO\MDM        136
773228331261 10.xxx.yyy.54       FOO\MDM        882
773228331269 10.xxx.yyy.60       FOO\MDM        389

我显然不希望这个脚本盲目地关闭每个会话而不管它是否与此脚本有关，所以我想我想将我的会话映射到IP地址并关闭该IP地址的任何内容？有没有人只是知道必要的PowerShell咒语来实现这个目标？

Answer 1

按计算机名称关闭SMB会话（更新为包括Brondahl的建议）：

return ''

Answer 2

为了最后的参考，我的完整清理代码如下所示：

foreach ($session in $Sessions) {
    Write-Host ""
    $vmName = $session.ComputerName
    $vmIPAddress = [System.Net.Dns]::GetHostAddresses($vmName).IPAddressToString

    Write-Host "*** Killing any active Target.exe processes on $vmName ***"
    Invoke-Command -Session $session -ScriptBlock {
        Stop-Process -Name "Target" -Force
    }

    Write-Host "*** Disconnecting the remote Drive created to give $vmName easy access to $RepositoryShare***"
    Invoke-Command -Session $session -ScriptBlock {
        Remove-PSDrive "dummyDriveName" 
    }

    Write-Host "*** Closing any open PS connections to $vmName ***"
    Remove-PSSession -Session $session

    Write-Host "*** Closing the still-open Windows Share connection from $vmName to $env.ComputerName ***"
    Get-SmbSession | Where-Object {$_.ClientComputerName -eq $vmIPAddress} | Close-SmbSession -Force
}

Powershell打开RemoteDrive会话

2 个答案: