[Samba] Configure DHCP to update DNS records with BIND9

Fri Jul 14 14:16:29 UTC 2017

Am Freitag, den 14.07.2017, 14:35 +0100 schrieb Rowland Penny via samba:
> 
> Before getting that far, can you post the entire block from the log,
> from where the computer either asks to renew (or in your case expire)
> the lease to were the message 'DHCP-DNS Update' is printed and then I
> can try and understand what is going on.

In this case the dhcp-server says the lease expired. The release of the IP by the computer
works (the MAC is argv[3] in the release part in the wiki). See the three cases below:

here the entries for the "add"

Jul  7 07:46:11 dc1 dhcpd: DHCPDISCOVER from 00:00:00:00:00:00 via eth0
Jul  7 07:46:12 dc1 dhcpd: DHCPOFFER on 192.168.4.4 to 00:00:00:00:00:00 (NAME) via eth0
Jul  7 07:46:12 dc1 dhcpd: Commit: IP: 192.168.4.4 DHCID: 1:0:e0:c5:39:18:ef Name: NAME
Jul  7 07:46:12 dc1 dhcpd: execute_statement argv[0] = /etc/dhcp/bin/dhcp-dyndns.sh
Jul  7 07:46:12 dc1 dhcpd: execute_statement argv[1] = add
Jul  7 07:46:12 dc1 dhcpd: execute_statement argv[2] = 192.168.4.4
Jul  7 07:46:12 dc1 dhcpd: execute_statement argv[3] = 1:00:00:00:00:00:00
Jul  7 07:46:12 dc1 dhcpd: execute_statement argv[4] = NAME
Jul  7 07:46:13 dc1 named[818]: samba_dlz: starting transaction on zone hq.samdom.de
Jul  7 07:46:13 dc1 named[818]: samba_dlz: allowing update of signer=dhcpduser\@HQ.samdom.de
name=NAME.hq.samdom.de tcpaddr=127.0.0.1 type=A key=3493294157.sig-dc1.hq.samdom.de/160/0
Jul  7 07:46:13 dc1 named[818]: samba_dlz: allowing update of signer=dhcpduser\@HQ.samdom.de
name=NAME.hq.samdom.de tcpaddr=127.0.0.1 type=A key=3493294157.sig-dc1.hq.samdom.de/160/0
Jul  7 07:46:13 dc1 named[818]: client 127.0.0.1#39439/key dhcpduser\@HQ.samdom.de: updating
zone 'hq.samdom.de/NONE': deleting rrset at 'NAME.hq.samdom.de' A
Jul  7 07:46:13 dc1 named[818]: samba_dlz: subtracted rdataset NAME.hq.samdom.de
'NAME.hq.samdom.de.#0113600#011IN#011A#011192.168.4.4'
Jul  7 07:46:13 dc1 named[818]: client 127.0.0.1#39439/key dhcpduser\@HQ.samdom.de: updating
zone 'hq.samdom.de/NONE': adding an RR at 'NAME.hq.samdom.de' A
Jul  7 07:46:13 dc1 named[818]: samba_dlz: added rdataset NAME.hq.samdom.de
'NAME.hq.samdom.de.#0113600#011IN#011A#011192.168.4.4'
Jul  7 07:46:13 dc1 named[818]: samba_dlz: committed transaction on zone hq.samdom.de
Jul  7 07:46:13 dc1 named[818]: samba_dlz: starting transaction on zone 4.168.192.in-addr.arpa
Jul  7 07:46:13 dc1 named[818]: samba_dlz: allowing update of signer=dhcpduser\@HQ.samdom.de
name=4.4.168.192.in-addr.arpa tcpaddr=127.0.0.1 type=PTR key=3852624973.sig-
dc1.hq.samdom.de/160/0
Jul  7 07:46:13 dc1 named[818]: samba_dlz: allowing update of signer=dhcpduser\@HQ.samdom.de
name=4.4.168.192.in-addr.arpa tcpaddr=127.0.0.1 type=PTR key=3852624973.sig-
dc1.hq.samdom.de/160/0
Jul  7 07:46:13 dc1 named[818]: client 127.0.0.1#38461/key dhcpduser\@HQ.samdom.de: updating
zone '4.168.192.in-addr.arpa/NONE': deleting rrset at '4.4.168.192.in-addr.arpa' PTR
Jul  7 07:46:13 dc1 named[818]: samba_dlz: subtracted rdataset 4.4.168.192.in-addr.arpa
'4.4.168.192.in-addr.arpa.#0113600#011IN#011PTR#011NAME.hq.samdom.de.'
Jul  7 07:46:13 dc1 named[818]: client 127.0.0.1#38461/key dhcpduser\@HQ.samdom.de: updating
zone '4.168.192.in-addr.arpa/NONE': adding an RR at '4.4.168.192.in-addr.arpa' PTR
Jul  7 07:46:13 dc1 named[818]: samba_dlz: added rdataset 4.4.168.192.in-addr.arpa
'4.4.168.192.in-addr.arpa.#0113600#011IN#011PTR#011NAME.hq.samdom.de.'
Jul  7 07:46:13 dc1 named[818]: samba_dlz: committed transaction on zone 4.168.192.in-
addr.arpa
Jul  7 07:46:13 dc1 logger: DHCP-DNS Update succeeded
Jul  7 07:46:13 dc1 dhcpd: DHCPREQUEST for 192.168.4.4 (192.168.0.90) from 00:00:00:00:00:00
(NAME) via eth0
Jul  7 07:46:13 dc1 dhcpd: DHCPACK on 192.168.4.4 to 00:00:00:00:00:00 (NAME) via eth0

Here the entries for the "delete", This is all nothing more. 

Jul  7 07:46:09 dc1 dhcpd: Expired: IP: 192.168.2.3
Jul  7 07:46:09 dc1 dhcpd: execute_statement argv[0] = /etc/dhcp/bin/dhcp-dyndns.sh
Jul  7 07:46:09 dc1 dhcpd: execute_statement argv[1] = delete
Jul  7 07:46:09 dc1 dhcpd: execute_statement argv[2] = 192.168.2.3
Jul  7 07:46:09 dc1 dhcpd: execute_statement argv[3] =
Jul  7 07:46:09 dc1 dhcpd: execute_statement argv[4] = 0
Jul  7 07:46:09 dc1 dhcpd: USAGE:
Jul  7 07:46:09 dc1 dhcpd: dhcp-dyndns.sh add ip-address dhcid|mac-address hostname
Jul  7 07:46:09 dc1 dhcpd: dhcp-dyndns.sh delete ip-address dhcid|mac-address
Jul  7 07:46:09 dc1 dhcpd: execute: /etc/dhcp/bin/dhcp-dyndns.sh exit status 256

And for completion the "release"

Jul 14 16:09:59 dc1 dhcpd: Release: IP: 192.168.0.154
Jul 14 16:09:59 dc1 dhcpd: execute_statement argv[0] = /etc/dhcp/bin/dhcp-dyndns.sh
Jul 14 16:09:59 dc1 dhcpd: execute_statement argv[1] = delete
Jul 14 16:09:59 dc1 dhcpd: execute_statement argv[2] = 192.168.0.154
Jul 14 16:09:59 dc1 dhcpd: execute_statement argv[3] = 1:00:00:00:00:00:00
Jul 14 16:09:59 dc1 dhcpd: execute_statement argv[4] = Win10
Jul 14 16:09:59 dc1 named[736]: samba_dlz: starting transaction on zone hq.samdom.de
Jul 14 16:09:59 dc1 named[736]: samba_dlz: allowing update of signer=dhcpduser\@HQ.samdom.de
name=Win10.hq.samdom.de tcpaddr=127.0.0.1 type=A key=632327721.sig-dc1.hq.samdom.de/160/0
Jul 14 16:09:59 dc1 named[736]: client 127.0.0.1#41375/key dhcpduser\@HQ.samdom.de: updating
zone 'hq.samdom.de/NONE': deleting rrset at 'Win10.hq.samdom.de' A
Jul 14 16:09:59 dc1 named[736]: samba_dlz: subtracted rdataset Win10.hq.samdom.de
'Win10.hq.samdom.de.#0113600#011IN#011A#011192.168.0.154'
Jul 14 16:09:59 dc1 named[736]: samba_dlz: subtracted rdataset hq.samdom.de
'hq.samdom.de.#0113600#011IN#011SOA#011dc1.hq.samdom.de. hostmaster.hq.samdom.de. 14877 900
600 86400 3600'
Jul 14 16:09:59 dc1 named[736]: samba_dlz: added rdataset hq.samdom.de
'hq.samdom.de.#0113600#011IN#011SOA#011dc1.hq.samdom.de. hostmaster.hq.samdom.de. 14878 900
600 86400 3600'
Jul 14 16:09:59 dc1 named[736]: samba_dlz: committed transaction on zone hq.samdom.de
Jul 14 16:09:59 dc1 named[736]: samba_dlz: starting transaction on zone 0.168.192.in-addr.arpa
Jul 14 16:09:59 dc1 named[736]: samba_dlz: allowing update of signer=dhcpduser\@HQ.samdom.de
name=154.0.168.192.in-addr.arpa tcpaddr=127.0.0.1 type=PTR key=777394679.sig-
dc1.hq.samdom.de/160/0
Jul 14 16:09:59 dc1 named[736]: client 127.0.0.1#59236/key dhcpduser\@HQ.samdom.de: updating
zone '0.168.192.in-addr.arpa/NONE': deleting rrset at '154.0.168.192.in-addr.arpa' PTR
Jul 14 16:09:59 dc1 named[736]: samba_dlz: subtracted rdataset 154.0.168.192.in-addr.arpa
'154.0.168.192.in-addr.arpa.#0113600#011IN#011PTR#011Win10.hq.samdom.de.'
Jul 14 16:09:59 dc1 named[736]: samba_dlz: subtracted rdataset 0.168.192.in-addr.arpa
'0.168.192.in-addr.arpa.#0113600#011IN#011SOA#011dc1.hq.samdom.de. hostmaster.hq.samdom.de.
1372 900 600 86400 3600'
Jul 14 16:09:59 dc1 named[736]: samba_dlz: added rdataset 0.168.192.in-addr.arpa
'0.168.192.in-addr.arpa.#0113600#011IN#011SOA#011dc1.hq.samdom.de. hostmaster.hq.samdom.de.
1373 900 600 86400 3600'
Jul 14 16:09:59 dc1 named[736]: samba_dlz: committed transaction on zone 0.168.192.in-
addr.arpa
Jul 14 16:09:59 dc1 logger: DHCP-DNS Update succeeded
Jul 14 16:09:59 dc1 dhcpd: DHCPRELEASE of 192.168.0.154 from 00:00:00:00:00:00 (Win10) via
eth0 (found)

Regards

Christian

> 
> Rowland
> 

-- 
Dr. Christian Naumer
Research Scientist
Plattform-Koordinator Bioprozesstechnik

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