Dynamic DNS

willhawes · 06-17-2004, 10:22 AM

I have an Active Directory domain with a Windows 2003 Server domain controller running Microsoft DNS Server. I also have a router running a DHCP.

I have several Windows 2000/XP/2003 clients and a single client running Mandrake 8.2.

All clients (Windows and Linux) correctly obtain an IP address from the router. However, while the Windows boxes all register their hostnames on the DNS server on startup (whether joined to the domain or not), the Linux client does not.

The DNS server has "Secure and nonsecure updates" allowed.

Can anyone tell me why the hostname of the Linux machine is not registered in DNS?

Do I need to run DNS and DHCP on the domain controller for this to work correctly?

TIA

Will

mascdman · 06-18-2004, 02:22 AM

From what I can find, it looks like if a DDNS server isn't configured to automatically generate hostnames and a DHCP client doesn't specify a FQDN or hostname, then no DDNS update occurs. Does configuring the linux machine to provide a hostname with its DHCP request make the DDNS update happen? Try adding DHCP_HOSTNAME=something.or.other.com to /etc/sysconfig/network.

--mascdman

willhawes · 06-18-2004, 02:43 AM

I already have DHCP_HOSTNAME specified in /etc/sys/config. It looks like the problem lies with the Linux client, since all Windows clients successfully register their hostname in DDNS.

On the Linux machine, the following commands all produce the expected output:

uname -a
hostname (all variants)

mascdman · 06-18-2004, 03:28 AM

What about adding DYNCONFIG=true to /etc/sysconfig/network-scripts/ifcfg-eth0 and/or adding

Code:

send fqdn.fqdn "fqdn.example.com";
send fqdn.encoded on;
send fqdn.server-update off;

to /etc/dhclient.conf? (On my Mandrake 10.0, I have a /etc/dhclient-eth0.conf instead, use which ever you have)

--mascdman

willhawes · 06-18-2004, 03:56 AM

thanks.

tried adding DYNCONFIG=true, that had no effect.

the other suggestion i can't follow because i don't have either of the files mentioned on the system.

what do you suggest?

mascdman · 06-18-2004, 04:32 AM

Try creating those dhclient.conf files one at a time, add those lines in, and then restart the network.

--mascdman

willhawes · 06-18-2004, 05:09 AM

have now tried that and again no effect - hostname is still not registered in DDNS.

mascdman · 06-18-2004, 03:25 PM

What about

Code:

send host-name "fqdn.something.com";

in /etc/dhclient.conf or /etc/dhclient-eth0.conf?

--mascdman

willhawes · 06-21-2004, 03:34 AM

still nothing

mascdman · 06-21-2004, 04:24 AM

I hate to say it, but I'm out of ideas...

--mascdman

willhawes · 06-21-2004, 04:36 AM

never mind, thanks for trying

i'm downloading Mandrake 10.0 as I type so hopefully this particular problem can be solved that way instead.