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Banjer
Asked: 2014-03-13 11:38:02 +0800 CST

Have net ads join create a PTR record

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When using the net ads join command to join a Linux host (CentOS 6.5) to a domain (Windows Server 2008 DCs), an A record is created but not a corresponding PTR record. Is it possible to have the PTR record created automatically? Perhaps a parameter to net ads join or a setting in /etc/samba/smb.conf?

FYI the full command I run to join a host to the DC:

sudo net ads join createcomputer="machines/Servers/Linux Servers" osName="CentOS" osVer=6.5 -U banjer

When creating a DNS A record manually on the Windows Server the PTR record is created automatically. Let me know if you need any more info.

linux

2 Answers

  1. Best Answer

    I found that nsupdate can be used as a workaround to create a PTR record from the Linux side:

    banjer@myhost~> nsupdate
> update add 210.31.20.192.in-addr.arpa 3600 ptr myhost.example.com.
> send

    That same command as a one-liner:

    echo -e "update add 210.31.20.192.in-addr.arpa 3600 ptr myhost.example.com.\nsend" | nsupdate

    Where 210.31.20.192 is your IP in reverse order.

    I'm open to a better answer for getting net ads to add the PTR record properly though.

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  2. First you need to create a primary reverse lookup zone for that network then windows server can automatically create the necessary PTR records when you add a A(AAA) host record in your primary forward lookup zones.

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