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need assistance with a DNS zone update script

Posted on 2014-10-23
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Last Modified: 2014-10-23
hello, can someone provide a script that we can use to update a remote DNS zone with records.

here is the scenario, we have a team in one region that adds machines to the domain, we have another stub zone server in a different region that we have to update with the new systems added [due to a NAT requirement]

we need a script that they can run that will prompt to enter the name & IP address, and from there update the DNS zone on a remove standalone DNS server.

many thanks!

S.
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Question by:siber1
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Expert Comment

by:becraig
ID: 40400993
You can probably just pipe the values into dnscmd

dnscmd [<ServerName>] /recordadd <ZoneName> <NodeName> <RRType> <RRData>

Do a  Read-host for the values you need to populate.

$val1 = Read-host "Please Enter the hostname"
$val2 = Read-Host "Please enter the ip address"
#Then run the dns cmd
#I am guessing server name will be hardcoded as probably the record type
dnscmd DNSSERVER1 /recordadd domain.local $val1.domain.local. A $val2

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Author Comment

by:siber1
ID: 40401017
hello becraig, when I run the script I get this confirmation:
Add A Record for . at mydomain.com
Command completed successfully.

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no record is added to the zone, it looks like perhaps the variables are not being passed correctly?
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Expert Comment

by:becraig
ID: 40401021
ok let us do a write-host for the command for debugging so we can be sure:
$val1 = Read-host "Please Enter the hostname"
$val2 = Read-Host "Please enter the ip address"
#Then run the dns cmd
#I am guessing server name will be hardcoded as probably the record type

write-host "dnscmd DNSSERVER1 /recordadd domain.local $val1.domain.local. A $val2"

dnscmd DNSSERVER1 /recordadd domain.local $val1.domain.local. A $val2

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Author Comment

by:siber1
ID: 40401029
interesting, the write-host looks perfect, but it doesn't create the record with the variables.

If I run the line that "write host" provides manually in powershell it creates the record fine

here is what write host displays;
dnscmd impmadc1 /recordadd mydomain.com ztest.mydomain.com. A 10.100.2.30

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when I run the script, no record is created, when I run it manually the record creates as expected. thoughts?
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Accepted Solution

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becraig earned 500 total points
ID: 40401052
Let's try this and see:


$val1 = Read-host "Please Enter the hostname"
$val2 = Read-Host "Please enter the ip address"

$cmdval = "dnscmd DNSSERVER1 /recordadd domain.local $val1.domain.local. A $val2"
Invoke-Expression $cmdval  

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Author Closing Comment

by:siber1
ID: 40401054
brilliant. works perfectly. thx much!
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Expert Comment

by:becraig
ID: 40401055
Np glad to help.
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