[Samba] samba_dnsupdate options: --use-samba-tool vs. --use-nsupdate, and dhcpd dynamic updates

[Billy Bob]

   On Thursday, January 10, 2019 1:43 PM, Rowland Penny via samba <samba at lists.samba.org> wrote:
 

 >On Thu, 10 Jan 2019 19:09:01 +0000 (UTC)
>Billy Bob via samba <samba at lists.samba.org> wrote:
>
>
>> 
>> As to the current issue, I am attemting to configure DHCP to update
>> DNS records with BIND9, as outlined in the Samba Wiki (with
>> correction of a couple errors in the "on release" and "on expiry"
>> sections of the example dhcpd.conf file).
>
>What errors ?

In "on expiry" changed:

execute("/usr/local/bin/dhcp-dyndns.sh", "delete", ClientIP, "", "0");

to
execute("/usr/local/bin/dhcp-dyndns.sh", "delete", ClientIP, "0", "");

and in on release (this one not really an error) gave

execute("/usr/local/bin/dhcp-dyndns.sh", "delete", ClientIP, ClientDHCID);

a default null value for ClientName, as follows

execute("/usr/local/bin/dhcp-dyndns.sh", "delete", ClientIP, ClientDHCID, "");


>Do you want to change your scripts to match my scripts as found on the
>wiki ?
>I know they work, well they have for me for the last 6 years.


I am not opposed to starting over with it. "My" script is just a copy of the Wiki script with variables populated according to the values for the server. Perhaps those values are not the same, test conditions are different ... I don't know.
It did work on prior incarnation of DC. Also the logs looked much more like those below, and the updates were being made.

>> =================================== ERRORS
>
>It is supposed to look like this:
>
>Jan 10 19:36:41 dc4 dhcpd[2093]: Commit: IP: 192.168.0.55 DHCID: 1:b8:27:eb:d3:31:81 Name: devuan
>Jan 10 19:36:41 dc4 dhcpd[2093]: execute_statement argv[0] = /usr/local/bin/dhcp-dyndns.sh
>Jan 10 19:36:41 dc4 dhcpd[2093]: execute_statement argv[1] = add
>Jan 10 19:36:41 dc4 dhcpd[2093]: execute_statement argv[2] = 192.168.0.55
>Jan 10 19:36:41 dc4 dhcpd[2093]: execute_statement argv[3] = 1:b8:27:eb:d3:31:81
>Jan 10 19:36:41 dc4 dhcpd[2093]: execute_statement argv[4] = devuan
>Jan 10 19:36:41 dc4 named[2336]: samba_dlz: starting transaction on zone samdom.example.com
>Jan 10 19:36:42 dc4 named[2336]: samba_dlz: allowing update of signer=dhcpduser\@SAMDOM.EXAMPLE.COM >name=devuan.samdom.example.com tcpaddr=127.0.0.1 type=A key=4044813655.sig-dc4.samdom.example.com/160/0
>Jan 10 19:36:42 dc4 named[2336]: samba_dlz: allowing update of signer=dhcpduser\@SAMDOM.EXAMPLE.COM >name=devuan.samdom.example.com tcpaddr=127.0.0.1 type=A key=4044813655.sig-dc4.samdom.example.com/160/0
>Jan 10 19:36:42 dc4 named[2336]: client 127.0.0.1#55675/key dhcpduser\@SAMDOM.EXAMPLE.COM: updating zone >'samdom.example.com/NONE': deleting rrset at 'devuan.samdom.example.com' A
>Jan 10 19:36:42 dc4 named[2336]: samba_dlz: subtracted rdataset devuan.samdom.example.com >'devuan.samdom.example.com.#0113600#011IN#011A#011192.168.0.55'
>Jan 10 19:36:42 dc4 named[2336]: client 127.0.0.1#55675/key dhcpduser\@SAMDOM.EXAMPLE.COM: updating zone >'samdom.example.com/NONE': adding an RR at 'devuan.samdom.example.com' A 192.168.0.55
>Jan 10 19:36:42 dc4 named[2336]: samba_dlz: added rdataset devuan.samdom.example.com >'devuan.samdom.example.com.#0113600#011IN#011A#011192.168.0.55'
>Jan 10 19:36:42 dc4 named[2336]: samba_dlz: committed transaction on zone samdom.example.com
>Jan 10 19:36:42 dc4 named[2336]: samba_dlz: starting transaction on zone 0.168.192.in-addr.arpa
>Jan 10 19:36:42 dc4 named[2336]: samba_dlz: allowing update of signer=dhcpduser\@SAMDOM.EXAMPLE.COM >name=55.0.168.192.in-addr.arpa tcpaddr=127.0.0.1 type=PTR key=4072256449.sig-dc4.samdom.example.com/160/0
>Jan 10 19:36:42 dc4 named[2336]: samba_dlz: allowing update of signer=dhcpduser\@SAMDOM.EXAMPLE.COM >name=55.0.168.192.in-addr.arpa tcpaddr=127.0.0.1 type=PTR key=4072256449.sig-dc4.samdom.example.com/160/0
>Jan 10 19:36:42 dc4 named[2336]: client 127.0.0.1#46009/key dhcpduser\@SAMDOM.EXAMPLE.COM: updating zone >'0.168.192.in-addr.arpa/NONE': deleting rrset at '55.0.168.192.in-addr.arpa' PTR
>Jan 10 19:36:42 dc4 named[2336]: samba_dlz: subtracted rdataset 55.0.168.192.in-addr.arpa '55.0.168.192.in->addr.arpa.#0113600#011IN#011PTR#011devuan.samdom.example.com.'
>Jan 10 19:36:42 dc4 named[2336]: client 127.0.0.1#46009/key dhcpduser\@SAMDOM.EXAMPLE.COM: updating zone >'0.168.192.in-addr.arpa/NONE': adding an RR at '55.0.168.192.in-addr.arpa' PTR devuan.samdom.example.com.
>Jan 10 19:36:42 dc4 named[2336]: samba_dlz: added rdataset 55.0.168.192.in-addr.arpa '55.0.168.192.in->addr.arpa.#0113600#011IN#011PTR#011devuan.samdom.example.com.'
>Jan 10 19:36:42 dc4 named[2336]: samba_dlz: committed transaction on zone 0.168.192.in-addr.arpa
>Jan 10 19:36:42 dc4 root: DHCP-DNS Update succeeded
>Jan 10 19:36:42 dc4 dhcpd[2093]: DHCPREQUEST for 192.168.0.55 from b8:27:eb:d3:31:81 (devuan) via eth0
>Jan 10 19:36:42 dc4 dhcpd[2093]: DHCPACK on 192.168.0.55 to b8:27:eb:d3:31:81 (devuan) via eth0
>
>Yours looks nothing like that>>Rowland

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