[Samba] Samba AD - Different IP than the existing one assigned

Thu Feb 27 13:25:55 UTC 2020

Hi, Thanks for helping.

Answers in line : 

Hi,

I want to use samba as AD.

everything seemed to be ok so far with the install and the config.

STATUS=daemon 'smbd' finished starting up and ready to serve connections

Feb 27 10:34:03 ip-1XX winbindd[22083]: [2020/02/27 10:34:03.002858,  0]

../lib/util/become_daemon.c:124(daemon_ready)

Feb 27 10:34:03 ip-1XX winbindd[22083]:   STATUS=daemon 'winbindd' finished

starting up and ready to serve connections

I think we need to see more of that log, particularly the lines above 'STATUS'

Log.smbd : 

> 

[2020/02/24 10:02:22.602083,  0] ../source3/smbd/server.c:1815(main)

  server role = 'active directory domain controller' not compatible with running smbd standalone.

  You should start 'samba' instead, and it will control starting smbd if required

[2020/02/24 10:02:38.247239,  0] ../lib/util/become_daemon.c:124(daemon_ready)

  STATUS=daemon 'smbd' finished starting up and ready to serve connections

[2020/02/24 10:17:43.198864,  0] ../lib/util/become_daemon.c:124(daemon_ready)

  STATUS=daemon 'smbd' finished starting up and ready to serve connections

[2020/02/27 10:11:32.523331,  0] ../lib/util/become_daemon.c:124(daemon_ready)

  STATUS=daemon 'smbd' finished starting up and ready to serve connections

[2020/02/27 10:34:02.981826,  0] ../lib/util/become_daemon.c:124(daemon_ready)

  STATUS=daemon 'smbd' finished starting up and ready to serve connections

Log.samba

  ../source4/dsdb/dns/dns_update.c:290: Failed DNS update - with error code 110

[2020/02/27 12:44:23.443080,  0] ../source4/dsdb/dns/dns_update.c:290(dnsupdate_nameupdate_done)

  ../source4/dsdb/dns/dns_update.c:290: Failed DNS update - with error code 110

[2020/02/27 12:54:23.503162,  0] ../source4/dsdb/dns/dns_update.c:290(dnsupdate_nameupdate_done)

  ../source4/dsdb/dns/dns_update.c:290: Failed DNS update - with error code 110

[2020/02/27 13:04:23.561187,  0] ../source4/dsdb/dns/dns_update.c:290(dnsupdate_nameupdate_done)

  ../source4/dsdb/dns/dns_update.c:290: Failed DNS update - with error code 110

[2020/02/27 13:14:23.616350,  0] ../source4/dsdb/dns/dns_update.c:290(dnsupdate_nameupdate_done)

  ../source4/dsdb/dns/dns_update.c:290: Failed DNS update - with error code 110

Nothing is running on port 53 :

tcp        0      0 0.0.0.0:49153           0.0.0.0:*               LISTEN

tcp6       0      0 [::]:49153              [::]:*                  LISTEN

udp        0      0 0.0.0.0:53447           0.0.0.0:*

unix  2      [ ACC ]     STREAM     LISTENING     3728453  /var/lib/samba/ntp_signd/socket

unix  2      [ ]         DGRAM                    3729533  /var/lib/samba/private/msg.sock/22087

unix  3      [ ]         DGRAM                    3892953

unix  3      [ ]         STREAM     CONNECTED     18537    /run/systemd/journal/stdout

unix  2      [ ]         DGRAM                    3729538

unix  3      [ ]         STREAM     CONNECTED     21535

unix  3      [ ]         STREAM     CONNECTED     18536

unix  3      [ ]         STREAM     CONNECTED     15342    /run/systemd/journal/stdout

unix  3      [ ]         STREAM     CONNECTED     25453

Now, when I performed a check for the adc1, I get an answer BUT ,the IP is

not the one of the machine

I'm using the internal_samba DNS, I understood that when the service starts,

it updates himself with proper IP. am I wrong ? how can I solve this problem

Where did you get that idea from ?

> I read this in a post somewhere, but obviously it is not the case then …

A DC should have a fixed IP and that is what Samba should use.

> yes ok : 172.31.6.15

Do you have more than one ethernet device ?

> Yes , here are the different devices, but none is matching this strange IP

br-07d306ca3f41: flags=4355<UP,BROADCAST,PROMISC,MULTICAST>  mtu 1500

        inet 172.19.0.1  netmask 255.255.0.0  broadcast 172.19.255.255

        ether 02:42:61:fb:18:40  txqueuelen 0  (Ethernet)

        RX packets 0  bytes 0 (0.0 B)

        RX errors 0  dropped 0  overruns 0  frame 0

        TX packets 0  bytes 0 (0.0 B)

        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

br-eebd35f33249: flags=4419<UP,BROADCAST,RUNNING,PROMISC,MULTICAST>  mtu 1500

        inet 172.18.0.1  netmask 255.255.0.0  broadcast 172.18.255.255

        inet6 fe80::42:dff:fed5:dd97  prefixlen 64  scopeid 0x20<link>

        ether 02:42:0d:d5:dd:97  txqueuelen 0  (Ethernet)

        RX packets 5577  bytes 3892905 (3.8 MB)

        RX errors 0  dropped 0  overruns 0  frame 0

        TX packets 1731  bytes 172505 (172.5 KB)

        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

docker0: flags=4355<UP,BROADCAST,PROMISC,MULTICAST>  mtu 1500

        inet 172.17.0.1  netmask 255.255.0.0  broadcast 172.17.255.255

        ether 02:42:f7:e2:f2:17  txqueuelen 0  (Ethernet)

        RX packets 0  bytes 0 (0.0 B)

        RX errors 0  dropped 0  overruns 0  frame 0

        TX packets 0  bytes 0 (0.0 B)

        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

eth0: flags=4419<UP,BROADCAST,RUNNING,PROMISC,MULTICAST>  mtu 1500

        inet 172.31.6.15  netmask 255.255.240.0  broadcast 172.31.15.255

        inet6 fe80::bf:52ff:fe4a:fe3c  prefixlen 64  scopeid 0x20<link>

        ether 02:bf:52:4a:fe:3c  txqueuelen 1000  (Ethernet)

        RX packets 7111658  bytes 9681867004 (9.6 GB)

        RX errors 0  dropped 0  overruns 0  frame 0

        TX packets 2255773  bytes 398129876 (398.1 MB)

        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

lo: flags=73<UP,LOOPBACK,RUNNING>  mtu 65536

        inet 127.0.0.1  netmask 255.0.0.0

        inet6 ::1  prefixlen 128  scopeid 0x10<host>

        loop  txqueuelen 1000  (Local Loopback)

        RX packets 372613  bytes 46260682 (46.2 MB)

        RX errors 0  dropped 0  overruns 0  frame 0

        TX packets 372613  bytes 46260682 (46.2 MB)

        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

What OS is this ? 

> Ubuntun 18.04

What version of Samba ?

Can you post the contents of the following files:

/etc/resolv.conf

> search transmitcorp.com

nameserver 127.0.0.1

options edns0

/etc/hostname

127.0.0.1 localhost php7.localhost adc1

120.0.0.1 php7.localhost

172.31.6.15 adc1

# The following lines are desirable for IPv6 capable hosts

::1 ip6-localhost ip6-loopback

fe00::0 ip6-localnet

ff00::0 ip6-mcastprefix

ff02::1 ip6-allnodes

ff02::2 ip6-allrouters

ff02::3 ip6-allhosts

/etc/hosts

> 

search transmitcorp.com

nameserver 127.0.0.1

options edns0

/etc/samba/smb.conf (or wherever smb.conf is on your DC)

> # Global parameters

[global]

        dns forwarder = 8.8.8.8

        netbios name = ADC1

        realm = TRANSMITCORP.COM

        server role = active directory domain controller

        workgroup = TRANSMITCORP

        idmap_ldb:use rfc2307 = yes

[netlogon]

        path = /var/lib/samba/sysvol/transmitcorp.com/scripts

        read only = No

[sysvol]

        path = /var/lib/samba/sysvol

        read only = No

Rowland

Lionel

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