powershell - 并行化 powershell 脚本执行

Question

我有 8 个 powershell 脚本。他们很少有依赖关系。这意味着它们不能并行执行。他们应该一个接一个地执行。

一些 Powershell 脚本没有依赖关系，可以并行执行。

以下是详细解释的依赖项

    Powershell scripts 1, 2, and 3 depend on nothing else
    Powershell script 4 depends on Powershell script 1
    Powershell script 5 depends on Powershell scripts 1, 2, and 3
    Powershell script 6 depends on Powershell scripts 3 and 4
    Powershell script 7 depends on Powershell scripts 5 and 6
    Powershell script 8 depends on Powershell script 5

我知道通过手动硬编码依赖是可能的。但是可能会添加 10 个以上的 powershell 脚本，并且可能会添加它们之间的依赖关系。

有没有人通过发现依赖来实现并行性？如果是这样，请分享我如何进行。

Answer 1

您需要查看 PowerShell 3.0 工作流。它提供了满足您的要求所需的功能。像这样的东西:

workflow Install-myApp {
    param ([string[]]$computername)
    foreach -parallel($computer in $computername) {
        "Installing MyApp on $computer"
        #Code for invoking installer here
        #This can take as long as 30mins and may reboot a couple of times
    }
}

workflow Install-MyApp2{
    param ([string[]]$computername)
    foreach -parallel($computer in $computername) {
        "Installing MyApp2 on $computer"
        #Code for invoking installer here
        #This can take as long as 30mins!
    }
}

WorkFlow New-SPFarm {
    Sequence {
        Parallel {
            Install-MyApp2 -computername "Server2","Server3"
            Install-MyApp -computername "Server1","Server4","Server5"
        }
        Sequence {
            #This activity can happen only after the set of activities in the above parallel block are complete"
            "Configuring First Server in the Farm [Server1]"

            #The following foreach should take place only after the above activity is complete and that is why we have it in a sequence
            foreach -parallel($computer in $computername) {
                "Configuring SharePoint on $computer"
            }
        }
    }
}