我有3个虚拟机（VM1，VM2，VM3），对于所有三个VM，我有三个单独的powershell脚本。
1）VM1-Script1.ps1将监视文件扩展名为* .txt的目录更改并将其重命名为 前缀为* .host1.txt和* .host2.txt的文件）。2）VM2-Script2.ps1将监视扩展名为* .host1.txt的文件并触发外部程序3）VM3-Script3.ps1将监视扩展名为* .host2.txt的文件并触发外部程序
这绝对正常。但是，要求是，例如，如果VM2完成操作，并且如果扩展名为* host1.txt的目录中没有可用文件，则将其闲置，VM1上的脚本应监视并观察VM2是否空闲，因此应使用文件* .host1重命名。 txt，以便空闲VM可以运行该操作。
逻辑的基本思想是VM2和VM3不应闲置，script1.ps1监视目录中的文件，根据可用的VM重命名文件以运行执行。请提出任何建议，有关详细脚本的信息，请参见下面的链接。
File system watcher to run script based on virtual machine Idle time
我还没有测试脚本，所以如果您可以帮助我调试它，那就太好了。我所写的内容是您要完成的工作的一个良好的开始，但是增加了用于将来扩展的功能。例如，它将允许您指定要在其上运行命令的更多VM，因此如果您需要通过在启动时指定正在运行的VM来扩展处理.bat文件的计算机数量。
我对您的脚本设计进行了几项重大修改。最明显的是，我没有在VM2和VM3上设置事件监视器，而是让VM1处理发送给VM2和VM3的命令。我还从每个事件中删除了$action字段，因为我认为这对您要完成的工作的总体设计没有帮助。
每五分钟将完成以下操作：
FileSystemWatcher触发的所有事件（拉出.bat路径）#Requires -Version 7
#Requires -PSEdition Desktop
# Remove space between # and Requires if VM needs permission to create files in D:\
# Requires -RunAsAdministrator
# Key: CO = Can optimize
class VirtualMachine {
[String]$vmName
[Object[]]$jobs
VirtualMachine ([string]$vmName) {
$this.jobs = @()
$this.vmName = $vmName
}
# Make it an array
[boolean] RemoveJob ([int[]]$jobNumber) {
$jobNumber = $jobNumber |
Where-Object -FilterScript {
($_ -gt 0) -and
($_ -lt $this.jobs.count)
}
if ( (-not ($null -eq $jobNumber)) -and
($this.jobs.count -gt 0) ) {
# Set jobs object array skip $jobNumber
$this.jobs = $this.jobs | Select-Object -SkipIndex $jobNumber
return $true
}
return $false
}
[boolean] AddJob ([object]$job)
{
if (-not ($null -eq $job)) {
$this.jobs += $job
return $true
}
return $false
}
}
### You will need to define VM's
# Can import vm names as a manual entry, or import from CSV
$VM = @()
if ($VM.count -eq 0) {
throw "No VM's to run .bat files on"
}
$VMPool = @()
$VM |
ForEach-Object {
# Generate a pool of virtual machines which each contain a job array
$VMPool += [VirtualMachine]::new($_)
}
# Parameters for System.IO.FileSystemWatcher to be constructed with
$watcherParameters = @{
Path = "C:\Test"
Filter = "*.bat"
IncludeSubdirectories = $false
EnableRaisingEvents = $true
}
# Triggered when a .bat file is placed in C:\Test\
$watcher = New-Object -TypeName System.IO.FileSystemWatcher `
-Property $watcherParameters
#Parameters for Register-ObjectEvent
$objEventParameters = @{
InputObject = $watcher
EventName = "Created"
}
# If you ever need to modify this, make sure to catch the registered event so you can unregister if needed.
Register-ObjectEvent @objEventParameters
while ($true) {
$batFiles = @()
### Clean up virtual machine jobs if unneeded (CO)
$VMPool |
ForEach-Object {
$FinishedJobs = @()
$count = 0
$_.jobs |
ForEach-Object {
if ($_.State -eq "Completed") {
$FinishedJobs += $count
}
$count += 1
}
if (-not ($null -eq $FinishedJobs)) {
$_.RemoveJob($FinishedJobs)
}
}
### Running virtual machine jobs if needed
# Get list of current .bat files to process from FileSystemWatcher
Get-Event |
ForEach-Object {
$batFiles += $_.SourceEventArgs.FullPath
}
#Remove all the file creation events
Get-Event |
ForEach-Object {
Remove-Event -SourceIdentifier $_.SourceIdentifier
}
if ($batFiles.count -gt 0) {
# Log current queued bat files in "D:\log.txt"
$logline = "QUEUED BAT FILES $(Get-Date)"
$batFiles |
ForEach-Object {
$logline += $_ + "`n"
}
Add-content "D:\log.txt" -value $logline
# Pull total jobs from VMPool (CO)
$batFiles |
ForEach-Object {
$path = $_
$VMPoolJobsTotal = $VMPool |
ForEach-Object {
$_.jobs.Count
}
$minValue = [int]($VMPoolJobsTotal | Measure-Object -Minimum).Minimum
$VMPool |
ForEach-Object
{
#First VM we find with minimum jobs (CO)
if ( $_.jobs.Count -eq $minValue )
{
$Task = Invoke-Command -FilePath $path `
-ComputerName $_.vmName `
-AsJob
#Add job to Virtual Machine's jobs
$_.AddJob($Task)
#Exit the loop, we don't need to go through any other VM's since we found one with least jobs.
break
}
}
}
}
# Chill for a bit afterward, will push out batch commands every five minutes.
# Can integrate this with a GUI to push out the .bat's to VM's
Start-Sleep -Seconds 300
}
# Created by Riley Carney
# Q&A: https://stackoverflow.com/questions/62098957/file-system-watcher-to-run-scripts-using-virtual-machine-idle-time