Restart-DFSRAndEnableAutoRecovery.ps1

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#
# Title: Restart-DFSRAndEnableAutoRecovery
# Date Created : 2017-12-28
# Last Edit: 2017-12-29
# Author : Andrew Ellis
# GitHub: https://github.com/AndrewEllis93/PowerShell-Scripts
#
# Nice and short and simple. It restarts the DFSR service on all domain controllers (I schedule this to run nightly. This isn't really necessary but I have found it to prevent some misc issues that crop up once in a blue moon) and enables DFSR auto-recovery, which for whatever reason is disabled on domain controllers by default.
#
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Function Restart-DFSRAndEnableAutoRecovery {
    <#
    .SYNOPSIS
    Gets all DCs, restarts the DFSR service, and enables DFSR auto recovery, which is turned off by default for who knows what reason. 
    
    .DESCRIPTION
    
    .EXAMPLE
    Restart-DFSRAndEnableAutoRecovery
    
    .NOTES
    Title: Restart-DFSRAndEnableAutoRecovery
    Date Created : 2017-12-28
    Last Edit: 2017-12-29
    Author : Andrew Ellis
    GitHub: https://github.com/AndrewEllis93/PowerShell-Scripts
    #>

    Write-Output "Getting list of DCs..."
    $DCs = Get-ADGroupMember 'Domain Controllers' -ErrorAction Stop

    ForEach ($DC in $DCs)
    {
        $Output = "Restarting DFSR service on " + $DC.Name + "..."
        Write-Output $Output
        Invoke-Command -ComputerName $DC.Name -ScriptBlock {Restart-Service DFSR}
        Start-Sleep 5
        Write-Output ("Enabling DFSR auto recovery on " + $DC.Name + "...")
        Invoke-Command -ComputerName $DC.Name -ScriptBlock {cmd.exe /c wmic /namespace:\\root\microsoftdfs path dfsrmachineconfig set StopReplicationOnAutoRecovery=FALSE}
    }
}
Function Start-Logging{
    param (
        [Parameter(Mandatory=$true)][String]$LogDirectory,
        [Parameter(Mandatory=$true)][String]$LogName,
        [Parameter(Mandatory=$true)][Int]$LogRetentionDays
    )

    #Sets screen buffer from 120 width to 500 width. This stops truncation in the log.
    $ErrorActionPreference = 'SilentlyContinue'
    $pshost = get-host
    $pswindow = $pshost.ui.rawui

    $newsize = $pswindow.buffersize
    $newsize.height = 3000
    $newsize.width = 500
    $pswindow.buffersize = $newsize

    $newsize = $pswindow.windowsize
    $newsize.height = 50
    $newsize.width = 500
    $pswindow.windowsize = $newsize
    $ErrorActionPreference = 'Continue'

    #Create log directory if it does not exist already
    If (!(Test-Path $LogDirectory)){mkdir $LogDirectory}

    #Starts logging.
    New-Item -ItemType directory -Path $LogDirectory -Force | Out-Null
    $Today = Get-Date -Format M-d-y
    Start-Transcript -Append -Path ($LogDirectory + "\" + $LogName + "." + $Today + ".log") | Out-Null

    #Shows proper date in log.
    Write-Output ("Start time: " + (Get-Date))

    #Purges log files older than X days
    $RetentionDate = (Get-Date).AddDays(-$LogRetentionDays)
    Get-ChildItem -Path $LogDirectory -Recurse -Force | Where-Object { !$_.PSIsContainer -and $_.CreationTime -lt $RetentionDate -and $_.Name -like "*.log"} | Remove-Item -Force
} 

#Start logging.
Start-Logging -logdirectory "C:\ScriptLogs\Restart-DFSRAndEnableAutoRecovery" -logname "Restart-DFSRAndEnableAutoRecovery" -LogRetentionDays 30

#Start function.
Restart-DFSRAndEnableAutoRecovery

#Stops logging.
Stop-Transcript