如何使用多线程PowerShell Ping脚本

Question

我最近完成了一个脚本，可以对列表中的每台计算机/工作站执行ping操作，并以很好的格式输出。

有数千台计算机可以ping下一个列表，所以它需要一段时间才能正常运行。我怎么能够多线程化这个工作，以便在合理的时间内完成工作？

Answer 1

你可以产卵multiple jobs 或者你可以使用一个工作流程和Foreach -parallel loop。

Answer 2

我发现并使用此脚本作为类似功能的基线Ping-IPRange。

我已经从原来的它进行了修改，并将其包含在下面。

如果这是你正在使用的，你可以很容易地适应这个主机名列表。

平IPRange.ps1

function Ping-IPRange 
{ 
    <# 
    .SYNOPSIS 
     Sends ICMP echo request packets to a range of IPv4 addresses between two given addresses. 

    .DESCRIPTION 
     This function lets you sends ICMP echo request packets ("pings") to 
     a range of IPv4 addresses using an asynchronous method. 

     Therefore this technique is very fast but comes with a warning. 
     Ping sweeping a large subnet or network with many switches may result in 
     a peak of broadcast traffic. 
     Use the -Interval parameter to adjust the time between each ping request. 
     For example, an interval of 60 milliseconds is suitable for wireless networks. 
     The RawOutput parameter switches the output to an unformatted 
     [System.Net.NetworkInformation.PingReply[]]. 

    .INPUTS 
     None 
     You cannot pipe input to this function. 

    .OUTPUTS 
     The function only returns output from successful pings. 

     Type: System.Net.NetworkInformation.PingReply 

     The RawOutput parameter switches the output to an unformatted 
     [System.Net.NetworkInformation.PingReply[]]. 

    .NOTES 
     Author : G.A.F.F. Jakobs 
     Created : August 30, 2014 
     Version : 6 

     Revision History: Kory Gill, 2016/01/09 
      formatting 
      added better error handling 
      close progress indicator when complete 

    .EXAMPLE 
     Ping-IPRange -StartAddress 192.168.1.1 -EndAddress 192.168.1.254 -Interval 20 

     IPAddress         Bytes      Ttl   ResponseTime 
     ---------         -----      ---   ------------ 
     192.168.1.41         32      64     371 
     192.168.1.57         32      128      0 
     192.168.1.64         32      128      1 
     192.168.1.63         32      64      88 
     192.168.1.254        32      64      0 

     In this example all the ip addresses between 192.168.1.1 and 192.168.1.254 are pinged using 
     a 20 millisecond interval between each request. 
     All the addresses that reply the ping request are listed. 

    .LINK 
     http://gallery.technet.microsoft.com/Fast-asynchronous-ping-IP-d0a5cf0e 

    #> 
    [CmdletBinding(ConfirmImpact='Low')] 
    Param(
     [parameter(Mandatory = $true, Position = 0)] 
     [System.Net.IPAddress]$StartAddress, 
     [parameter(Mandatory = $true, Position = 1)] 
     [System.Net.IPAddress]$EndAddress, 
     [int]$Interval = 30, 
     [Switch]$RawOutput = $false 
    ) 

    $timeout = 2000 

    function New-Range ($start, $end) { 

     [byte[]]$BySt = $start.GetAddressBytes() 
     [Array]::Reverse($BySt) 
     [byte[]]$ByEn = $end.GetAddressBytes() 
     [Array]::Reverse($ByEn) 
     $i1 = [System.BitConverter]::ToUInt32($BySt,0) 
     $i2 = [System.BitConverter]::ToUInt32($ByEn,0) 
     for ($x = $i1;$x -le $i2;$x++) 
     { 
      $ip = ([System.Net.IPAddress]$x).GetAddressBytes() 
      [Array]::Reverse($ip) 
      [System.Net.IPAddress]::Parse($($ip -join '.')) 
     } 
    } 

    $ipRange = New-Range $StartAddress $EndAddress 

    $IpTotal = $ipRange.Count 

    Get-Event -SourceIdentifier "ID-Ping*" | Remove-Event 
    Get-EventSubscriber -SourceIdentifier "ID-Ping*" | Unregister-Event 

    $ipRange | ForEach-Object { 

     [string]$VarName = "Ping_" + $_.Address 

     New-Variable -Name $VarName -Value (New-Object System.Net.NetworkInformation.Ping) 

     Register-ObjectEvent -InputObject (Get-Variable $VarName -ValueOnly) -EventName PingCompleted -SourceIdentifier "ID-$VarName" 

     (Get-Variable $VarName -ValueOnly).SendAsync($_,$timeout,$VarName) 

     Remove-Variable $VarName 

     try 
     { 

      $pending = (Get-Event -SourceIdentifier "ID-Ping*").Count 

     } 
     catch [System.InvalidOperationException] 
     { 
      $pending = 0 
     } 

     $index = [array]::indexof($ipRange,$_) 

     Write-Progress -Activity "Sending ping to" -Id 1 -status $_.IPAddressToString -PercentComplete (($index/$IpTotal) * 100) 

     $percentComplete = ($($index - $pending), 0 | Measure-Object -Maximum).Maximum 

     Write-Progress -Activity "ICMP requests pending" -Id 2 -ParentId 1 -Status ($index - $pending) -PercentComplete ($percentComplete/$IpTotal * 100) 

     Start-Sleep -Milliseconds $Interval 
    } 

    Write-Progress -Activity "Done sending ping requests" -Id 1 -Status 'Waiting' -PercentComplete 100 

    while ($pending -lt $IpTotal) { 

     Wait-Event -SourceIdentifier "ID-Ping*" | Out-Null 

     Start-Sleep -Milliseconds 10 

     try 
     { 

      $pending = (Get-Event -SourceIdentifier "ID-Ping*").Count 

     } 
     catch [System.InvalidOperationException] 
     { 
      $pending = 0 
     } 

     $percentComplete = ($($IpTotal - $pending), 0 | Measure-Object -Maximum).Maximum 

     Write-Progress -Activity "ICMP requests pending" -Id 2 -ParentId 1 -Status ($IpTotal - $pending) -PercentComplete ($percentComplete/$IpTotal * 100) 
    } 

    Write-Progress -Completed -Id 2 -ParentId 1 -Activity "Completed" 
    Write-Progress -Completed -Id 1 -Activity "Completed" 

    $Reply = @() 

    if ($RawOutput) 
    { 
     Get-Event -SourceIdentifier "ID-Ping*" | ForEach { 
      if ($_.SourceEventArgs.Reply.Status -eq "Success") 
      { 
       $Reply += $_.SourceEventArgs.Reply 
      } 
      Unregister-Event $_.SourceIdentifier 
      Remove-Event $_.SourceIdentifier 
     } 
    } 
    else 
    { 
     Get-Event -SourceIdentifier "ID-Ping*" | ForEach-Object { 
      if ($_.SourceEventArgs.Reply.Status -eq "Success") 
      { 
       $pinger = @{ 
        IPAddress = $_.SourceEventArgs.Reply.Address 
        Bytes = $_.SourceEventArgs.Reply.Buffer.Length 
        Ttl = $_.SourceEventArgs.Reply.Options.Ttl 
        ResponseTime = $_.SourceEventArgs.Reply.RoundtripTime 
       } 
       $Reply += New-Object PSObject -Property $pinger 
      } 
      Unregister-Event $_.SourceIdentifier 
      Remove-Event $_.SourceIdentifier 
     } 
    } 

    if ($Reply.Count -eq 0) 
    { 
     Write-Verbose "Ping-IPRange : No IP address responded" -Verbose 
    } 

    return $Reply 
} 

Answer 3

workflow Ping 
{ 
    param($computers) 

    foreach -parallel ($computer in $computers) 
    { 
     $status = Test-Connection -ComputerName $computer -Count 1 -Quiet 

     if (!$status) 
      { Write-Output "Could not ping $computer" } 
    } 
} 

$computers = @(
    "wd1600023", 
    "sleipnir" 
) 

Ping $computers