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> Help setting up DC, DNS issue?, Can't ping domain name
corpusdilecti
post Apr 29 2017, 12:56 PM
Post #1


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So I'm following the tecmint tutorial to install samba 4 active directory on ubuntu, but I'm running to an issue with resolving my domain name. I can ping the FQDN and Host, but not the domain name. Here is my setup:

Hostname:

adc1

Hosts file:

127.0.0.1 localhost
127.0.1.1 adc1.tirnanog.local adc1

# The following lines are desirable for IPv6 capable hosts
::1 localhost ip6-localhost ip6-loopback
ff02::1 ip6-allnodes
ff02::2 ip6-allrouters

/etc/network/interfaces

# This file describes the network interfaces available on your system
# and how to activate them. For more information, see interfaces(5).

source /etc/network/interfaces.d/*

# The loopback network interface
auto lo
iface lo inet loopback

# Wired network connection
auto eno1
iface eno1 inet static
address 192.168.1.200
netmask 255.255.255.0
broadcast 192.168.1.254
gateway 192.168.1.1
dns-nameservers 127.0.0.1 192.168.1.200 192.168.1.1
dns-search tirnanog.local

/etc/resolv.conf

# Dynamic resolv.conf(5) file for glibc resolver(3) generated by resolvconf(8)
# DO NOT EDIT THIS FILE BY HAND -- YOUR CHANGES WILL BE OVERWRITTEN
nameserver 127.0.0.1
search tirnanog.local

When I try to ping, these are the results that I get:

root@adc1:/# ping -c3 tirnanog.local
ping: unknown host tirnanog.local

root@adc1:/# ping -c3 adc1.tirnanog.local
PING adc1.tirnanog.local (127.0.1.1) 56(84) bytes of data.
64 bytes from adc1.tirnanog.local (127.0.1.1): icmp_seq=1 ttl=64 time=0.049 ms
64 bytes from adc1.tirnanog.local (127.0.1.1): icmp_seq=2 ttl=64 time=0.060 ms
64 bytes from adc1.tirnanog.local (127.0.1.1): icmp_seq=3 ttl=64 time=0.061 ms

--- adc1.tirnanog.local ping statistics ---
3 packets transmitted, 3 received, 0% packet loss, time 1998ms
rtt min/avg/max/mdev = 0.049/0.056/0.061/0.010 ms


root@adc1:/# ping -c3 adc1.tirnanog.local
PING adc1.tirnanog.local (127.0.1.1) 56(84) bytes of data.
64 bytes from adc1.tirnanog.local (127.0.1.1): icmp_seq=1 ttl=64 time=0.052 ms
64 bytes from adc1.tirnanog.local (127.0.1.1): icmp_seq=2 ttl=64 time=0.061 ms
64 bytes from adc1.tirnanog.local (127.0.1.1): icmp_seq=3 ttl=64 time=0.062 ms

--- adc1.tirnanog.local ping statistics ---
3 packets transmitted, 3 received, 0% packet loss, time 1998ms
rtt min/avg/max/mdev = 0.052/0.058/0.062/0.007 ms


Can anyone give me a hand and let me know what I'm doing wrong? I have a good feeling it is something to do with the dns-nameservers, but I've tried changing them a few time in /etc/network/interfaces and I can't seem to get anything to work.

By the way, this is what I'm running:

Distributor ID: Ubuntu
Description: Ubuntu 16.04.2 LTS
Release: 16.04
Codename: xenial

Please, let me know if there is any other info needed. Thanks!
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michaelk
post Apr 30 2017, 06:30 AM
Post #2


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Can you post the link to the tutorial?

What local DNS server are you running?
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corpusdilecti
post Apr 30 2017, 12:39 PM
Post #3


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QUOTE (michaelk @ Apr 30 2017, 06:30 AM) *
Can you post the link to the tutorial?

What local DNS server are you running?


The original guide I was following was: www.tecmint.com/install-samba4-active-directory-ubuntu/

But it turns out that I completely skipped the step of setting up DNS all together. I just restarted from scratch and now successfully have DNS running as it should. biggrin.gif That should make the next part much easier lol.

In addition to the SAMBA documentation /u/dundir linked me to here, lists.thekelleys.org.uk/pipermail/dnsmasq-discuss/2011q1/004796.html in reddit.com/r/linux4noobs, I used tools.ietf.org/html/rfc1912 to gain some good knowledge on DNS configuration best practices.

I used two sites to guide me along with setting up DNS:

1st - help.ubuntu.com/lts/serverguide/dns-configuration.html

I found this one lacked some of the explanation that i needed to understand what and why I was doing something.

2nd - ulyssesonline.com/2007/11/07/how-to-setup-a-dns-server-in-ubuntu/

This one did a bit more explaining and helped me get a better understanding of what and why.
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