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Quick PowerShell script to check DNS settings on all servers

By on September 23, 2013 in PowerShell, Windows

I wanted to decommission some old Domain Controllers. I needed to make sure that other servers weren’t pointing to theses old DCs for DNS. I wrote this quick PowerShell script to loop through all servers and get their DNS search order.

$AllServers=Get-ADComputer -Filter {OperatingSystem -Like "Windows Server*"}
ForEach ($Server in $AllServers){
$Result=Get-WmiObject -Class Win32_NetworkAdapterConfiguration -Filter "IPEnabled = 'True'" -Property DNSServerSearchOrder -ComputerName $Server.Name 
$output = new-object PSObject 
$output | add-member NoteProperty "ComputerName" $Server.Name
$output | add-member NoteProperty "DNSServerSearchOrder" $Result.DNSServerSearchOrder
$output
}

Hope that helps some one, or me when we moce to the next version of DCs.

,

One Response to Quick PowerShell script to check DNS settings on all servers

  1. Vic November 26, 2014 at 12:31 pm #

    Ran this script on Windows Server 2012 R2 and got the following error. Can you help?
    I need a PS script that collects DNS settings on servers in a legacy domain. And then, I will need a script that changes DNS settings to the new servers post AD upgrade.

    PS C:\scripts> .\check_dns_on_servers.ps1
    At C:\scripts\check_dns_on_servers.ps1:1 char:59
    + $AllServers=Get-ADComputer -Filter {OperatingSystem -Like "Windows Server*& …
    + ~
    The ampersand (&) character is not allowed. The & operator is reserved for future use; wrap an ampersand in double
    quotation marks (“&”) to pass it as part of a string.
    At C:\scripts\check_dns_on_servers.ps1:1 char:80
    + $AllServers=Get-ADComputer -Filter {OperatingSystem -Like "Windows Server*& …
    + ~
    The ampersand (&) character is not allowed. The & operator is reserved for future use; wrap an ampersand in double
    quotation marks (“&”) to pass it as part of a string.
    At C:\scripts\check_dns_on_servers.ps1:3 char:72
    + $Result=Get-WmiObject -Class Win32_NetworkAdapterConfiguration -Filter "IPE …
    + ~
    The ampersand (&) character is not allowed. The & operator is reserved for future use; wrap an ampersand in double
    quotation marks (“&”) to pass it as part of a string.
    At C:\scripts\check_dns_on_servers.ps1:3 char:96
    + … nabled = ‘True’" -Property DNSServerSearchOrder -ComputerName $Server.Name
    + ~
    The ampersand (&) character is not allowed. The & operator is reserved for future use; wrap an ampersand in double
    quotation marks (“&”) to pass it as part of a string.
    At C:\scripts\check_dns_on_servers.ps1:5 char:35
    + $output | add-member NoteProperty "ComputerName" $Server.Name
    + ~
    The ampersand (&) character is not allowed. The & operator is reserved for future use; wrap an ampersand in double
    quotation marks (“&”) to pass it as part of a string.
    At C:\scripts\check_dns_on_servers.ps1:5 char:53
    + $output | add-member NoteProperty "ComputerName" $Server.Name
    + ~
    The ampersand (&) character is not allowed. The & operator is reserved for future use; wrap an ampersand in double
    quotation marks (“&”) to pass it as part of a string.
    At C:\scripts\check_dns_on_servers.ps1:6 char:35
    + $output | add-member NoteProperty "DNSServerSearchOrder" $Result.DNSSe …
    + ~
    The ampersand (&) character is not allowed. The & operator is reserved for future use; wrap an ampersand in double
    quotation marks (“&”) to pass it as part of a string.
    At C:\scripts\check_dns_on_servers.ps1:6 char:61
    + $output | add-member NoteProperty "DNSServerSearchOrder" $Result.DNSSe …
    + ~
    The ampersand (&) character is not allowed. The & operator is reserved for future use; wrap an ampersand in double
    quotation marks (“&”) to pass it as part of a string.
    + CategoryInfo : ParserError: (:) [], ParseException
    + FullyQualifiedErrorId : AmpersandNotAllowed