[Samba] Configure DHCP to update DNS records with BIND9
jokie74 at webstatics.de
jokie74 at webstatics.de
Tue Aug 13 13:50:29 UTC 2019
Hello everyone,
I have configured my Samba as AD with BIND9_DLZ as backend and trying to
configure the ISC-DHCP-server to add the leases to BIND_DLZ
As described in the samba wiki:
https://wiki.samba.org/index.php/Configure_DHCP_to_update_DNS_records_with_B
IND9
Everything is working fine so far, but I get an error message as shown below
in syslog:
Aug 13 14:32:28 SAMBA dhcpd[4635]: DHCPDISCOVER from 60:6d:3c:09:6a:52
(amazon-b550a4de2) via home.lan
Aug 13 14:32:29 SAMBA dhcpd[4635]: DHCPOFFER on 192.168.0.104 to
60:6d:3c:09:6a:52 (amazon-b550a4de2) via home.lan
Aug 13 14:32:29 SAMBA dhcpd[4635]: Commit: IP: 192.168.0.104 DHCID:
60:6d:3c:09:6a:52 Name: amazon-b550a4de2
Aug 13 14:32:29 SAMBA dhcpd[4635]: execute_statement argv[0] =
/usr/local/bin/dhcp-dyndns.sh
Aug 13 14:32:29 SAMBA dhcpd[4635]: execute_statement argv[1] = add
Aug 13 14:32:29 SAMBA dhcpd[4635]: execute_statement argv[2] = 192.168.0.104
Aug 13 14:32:29 SAMBA dhcpd[4635]: execute_statement argv[3] =
60:6d:3c:09:6a:52
Aug 13 14:32:29 SAMBA dhcpd[4635]: execute_statement argv[4] =
amazon-b550a4de2
Aug 13 14:32:29 SAMBA named[11842]: samba_dlz: allowing update of
signer=dhcpduser\@HOME.LAN name=amazon-b550a4de2.HOME.LAN tcpaddr=127.0.0.1
type=A key=365897329.sig-samba.home.lan/160/0
Aug 13 14:32:29 SAMBA named[11842]: samba_dlz: allowing update of
signer=dhcpduser\@HOME.LAN name=amazon-b550a4de2.HOME.LAN tcpaddr=127.0.0.1
type=A key=365897329.sig-samba.home.lan/160/0
Aug 13 14:32:29 SAMBA named[11842]: client @0x7f118109b250
127.0.0.1#47097/key dhcpduser\@HOME.LAN: updating zone 'home.lan/NONE':
deleting rrset at 'amazon-b550a4de2.HOME.LAN' A
Aug 13 14:32:29 SAMBA named[11842]: client @0x7f118109b250
127.0.0.1#47097/key dhcpduser\@HOME.LAN: updating zone 'home.lan/NONE':
adding an RR at 'amazon-b550a4de2.HOME.LAN' A 192.168.0.104
Aug 13 14:32:29 SAMBA named[11842]: client @0x7f118104d710
127.0.0.1#54253/key dhcpduser\@HOME.LAN: signer "dhcpduser\@HOME.LAN" denied
Aug 13 14:32:29 SAMBA named[11842]: client @0x7f118104d710
127.0.0.1#54253/key dhcpduser\@HOME.LAN: update '0.168.192.in-addr.arpa/IN'
denied
Aug 13 14:32:29 SAMBA dhcpd: DHCP-DNS Update failed: 02
This is my dhcpd.conf:
ddns-update-style none;
update-static-leases on;
allow unknown-clients;
use-host-decl-names on;
default-lease-time 86400; #24 hours
max-lease-time 86400;
supersede domain-name "home.lan";
prepend domain-name-servers 127.0.0.1;
authoritative;
log-facility local7;
subnet 192.168.0.0 netmask 255.255.255.0 {
option domain-name "HOME.LAN";
option domain-name-servers 192.168.0.1;
option subnet-mask 255.255.255.0;
option routers 192.168.0.254;
option netbios-name-servers 192.168.0.1;
option ntp-servers 192.168.0.1;
option broadcast-address 192.168.0.255;
option time-offset 0;
ddns-domainname "HOME.LAN. <http://HOME.LAN.> ";
ddns-rev-domainname "0.168.192.in-addr.arpa.";
option ntp-servers 192.168.0.1;
pool {
range 192.168.0.100 192.168.0.200;
}
}
on commit {
set noname = concat("dhcp-", binary-to-ascii(10, 8, "-", leased-address));
set ClientIP = binary-to-ascii(10, 8, ".", leased-address);
set ClientDHCID = concat (
suffix (concat ("0", binary-to-ascii (16, 8, "",
substring(hardware,1,1))),2), ":",
suffix (concat ("0", binary-to-ascii (16, 8, "",
substring(hardware,2,1))),2), ":",
suffix (concat ("0", binary-to-ascii (16, 8, "",
substring(hardware,3,1))),2), ":",
suffix (concat ("0", binary-to-ascii (16, 8, "",
substring(hardware,4,1))),2), ":",
suffix (concat ("0", binary-to-ascii (16, 8, "",
substring(hardware,5,1))),2), ":",
suffix (concat ("0", binary-to-ascii (16, 8, "",
substring(hardware,6,1))),2)
);
set ClientName = pick-first-value(option host-name, config-option-host-name,
client-name, noname);
log(concat("Commit: IP: ", ClientIP, " DHCID: ", ClientDHCID, " Name: ",
ClientName));
execute("/usr/local/bin/dhcp-dyndns.sh", "add", ClientIP, ClientDHCID,
ClientName);
}
on release {
set ClientIP = binary-to-ascii(10, 8, ".", leased-address);
set ClientDHCID = concat (
suffix (concat ("0", binary-to-ascii (16, 8, "",
substring(hardware,1,1))),2), ":",
suffix (concat ("0", binary-to-ascii (16, 8, "",
substring(hardware,2,1))),2), ":",
suffix (concat ("0", binary-to-ascii (16, 8, "",
substring(hardware,3,1))),2), ":",
suffix (concat ("0", binary-to-ascii (16, 8, "",
substring(hardware,4,1))),2), ":",
suffix (concat ("0", binary-to-ascii (16, 8, "",
substring(hardware,5,1))),2), ":",
suffix (concat ("0", binary-to-ascii (16, 8, "",
substring(hardware,6,1))),2)
);
log(concat("Release: IP: ", ClientIP));
execute("/usr/local/bin/dhcp-dyndns.sh", "delete", ClientIP, ClientDHCID);
}
on expiry {
set ClientIP = binary-to-ascii(10, 8, ".", leased-address);
# cannot get a ClientMac here, apparently this only works when actually
receiving a packet
log(concat("Expired: IP: ", ClientIP));
# cannot get a ClientName here, for some reason that always fails
execute("/usr/local/bin/dhcp-dyndns.sh", "delete", ClientIP, "", "0");
}
Hostname resolution is working for all devices after the IP is provided by
the dhcp server.
Please could you help me to find out what is wrong or why I'm getting this
error and where it is comming from.???
Any help and suggestion is much appreciated. thanks you in advance.
Best regards,
Joerg
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