dnsserver.ps1

#If dns_srv3 is populated do the following 
If($dns_srv3) { 
#This stage added the second server as a nameserver to the zones created above 
$zones | foreach-object {Add-DnsServerResourceRecord -Name $_ -NameServer $dns_srv2 -NS -ZoneName $_} $zones | foreach-object {Add-DnsServerResourceRecord -Name $_ -NameServer $dns_srv3 -NS -ZoneName $_} 
#Create remote session and create a copy of the zones onto the secondary server 
$session = New-PSSession -ComputerName $dns_srv2 -Credential $credentials ForEach ($z in $zones) {Invoke-Command -Session $session -ScriptBlock $scriptblock -Arg @($zones,$dns_ip1,$dns_srv2,$z)} 
#Create remote session and create a copy of the zones onto the third server 
$session2 = New-PSSession -ComputerName $dns_srv3 -Credential $credentials ForEach ($z in $zones) {Invoke-Command -Session $session2 -ScriptBlock $scriptblock -Arg @($zones,$dns_ip1,$dns_srv2,$z,$dns_srv3)} #Remove credential file Remove-Item C:\cred.txt 
#Close remote session to the second server 
Remove-PSSession $Session 
#Close remote session to the third server 
Remove-PSSession $Session2 
#This checks if the script has ran with errors or not and outputs accordingly. 
If ($Error[0]) { Write-Host "The script has completed but has completed with errors, please investigate and re-run script." -BackgroundColor Black -ForegroundColor Red   }  Else { Write-Host "The script has completed successfully." -BackgroundColor Black -ForegroundColor Yellow } } else #If there dns_srv3 is empty the script will do the following { 
#This stage added the second server as a nameserver to the zones created above 
$zones | foreach-object {Add-DnsServerResourceRecord -Name $_ -NameServer $dns_srv2 -NS -ZoneName $_} 
#Create remote session and create a copy of the zones onto the secondary server 
$session = New-PSSession -ComputerName $dns_srv2 -Credential $credentials ForEach ($z in $zones) {Invoke-Command -Session $session -ScriptBlock $scriptblock -Arg @($zones,$dns_ip1,$dns_srv2,$z)} 
#Remove credential file 
Remove-Item C:\cred.txt 
#Close remote session 
Remove-PSSession $Session 
#This checks if the script has ran with errors or not and outputs accordingly. 
If ($Error[0]) { Write-Host "The script has completed but has completed with errors, please investigate and re-run script." -BackgroundColor Black -ForegroundColor Red   }  Else { Write-Host "The script has completed successfully." -BackgroundColor Black -ForegroundColor Yellow } }