是否可以在工作流中调用命令？

Question

有人知道我是否可以在 PowerShell 工作流程中使用 Invoke-Command 吗？

目前我有脚本循环遍历包含服务列表的文本文件，但我希望它一次推送到所有服务器，而不是逐一推送。这可能吗？

这是我正在使用的当前脚本块：

{
    ForEach ($Server in $Servers) {
        Write-Host "Copying code to $Server..."

        If (!(Test-Path -path \$Server\c$\Websites\Versions\v$version)) {
            New-Item \$Server\c$\Websites\Versions\v$version -Type Directory | Out-Null
        }

        Copy-Item .\Packages\v$version\* \$Server\c$\Websites\Versions\v$version -Force -Recurse

        Write-Host "Converting to application on $Server..."

        Invoke-Command -ComputerName $Server -ScriptBlock $Script -Argumentlist $Version | Out-Null
    }
}

Answer 1

PowerShell 工作流引擎无法直接调用 PowerShell cmdlet。相反，如果脚本编写者在工作流定义内调用 PowerShell cmdlet，PowerShell 工作流引擎将自动将 PowerShell cmdlet 的调用包装在 InlineScript 工作流 Activity.

内

workflow test
{
  ForEach ($Server in $Servers) {
      Write-Host "Copying code to $Server..."

      If (!(Test-Path -path \$Server\c$\Websites\Versions\v$version)) {
          New-Item \$Server\c$\Websites\Versions\v$version -Type Directory | Out-Null
      }

      Copy-Item .\Packages\v$version\* \$Server\c$\Websites\Versions\v$version -Force -Recurse

      Write-Host "Converting to application on $Server..."

      InlineScript {
          Invoke-Command -ComputerName $Server -ScriptBlock $Script -Argumentlist $Version | Out-Null
      }
  }
}

至于能不能用，就按照Mathias的建议去试一下吧

Answer 2

@Trevor 的作为一个整体骨架很好，但它不会像现在这样工作。有几项缺失或不正确：

向工作流传递参数
向 InlineScript 传递参数
将 ScriptBlock 作为参数传递；
在工作流中使用 Out-Null

工作示例：

$serversProd=@"
server1
server2
server3
server4
"@-split'\r\n'

$reportScript = "report.script.ps1"


$generateReport = {
    param($reportScript)

    cd D:\Automations\ConnectivityCheck
    powershell -file $reportScript
}

workflow check-connectivity {
    Param ($servers, $actionBlock, $reportScript)

    # Prepare the results folder
    $resultsFolder = "D:\Automations\ConnectivityCheckResults"
    $unused1 = mkdir -Force $resultsFolder

    # Run on all servers in parallel
    foreach -parallel ($server in $servers) {
        # Upload script to the server
        $unused2 = mkdir -Force \$server\D$\Automations\ConnectivityCheck
        cp -Force $reportScript \$server\D$\Automations\ConnectivityCheck\

        "Starting on $server..."

        # Execute script on the server. It should contain Start-Transcript and Stop-Transcript commands
        # For example: 
        # $hostname = $(Get-Wmiobject -Class Win32_ComputerSystem).Name
        # $date = (Get-Date).ToString("yyyyMMdd")
        # Start-Transcript -path ".$date.$hostname.connectivity.report.txt"
        # ...Code...
        # Stop-Transcript

        $results = InlineScript {
            $scriptBlock = [scriptblock]::Create($Using:actionBlock)
            Invoke-Command -computername $Using:server -ScriptBlock $scriptBlock -ArgumentList $Using:reportScript
        }

        # Download transcript file from the server
        $transcript = [regex]::Match($results,"Transcript started.+?file is \.\([^\s]+)").groups[1].value
        "Completed on $server. Transcript file: $transcript"
        cp -Force \$server\D$\Automations\ConnectivityCheck$transcript $resultsFolder\
    }
}

cls
# Execute workflow
check-connectivity $serversProd $generateReport $reportScript

是否可以在工作流中调用命令？

Is it possible to invoke-command with in a workflow?

windows

powershell

invoke-command