problom with Configure DNS server in centos 6

Asila · 01-01-2012, 07:03 AM

hii eveybody
i need to configure DNS ,it should be configured to use 192.168.0.0/24 and not the localhost (127.0.0.1)..
I have
1.Install BIND
2.Configure BIND

Quote:

[root@localhost ~]# vi /etc/named.conf
//
// named.conf
//
// Provided by Red Hat bind package to configure the ISC BIND named(8) DNS
// server as a caching only nameserver (as a localhost DNS resolver only).
//
// See /usr/share/doc/bind*/sample/ for example named configuration files.
//

options {

#listen-on port 53 { 127.0.0.1; };

listen-on-v6 { none; };
directory"/var/named";
dump-file"/var/named/data/cache_dump.db";
statistics-file"/var/named/data/named_stats.txt";
memstatistics-file"/var/named/data/named_mem_stats.txt";

allow-query{ localhost; 192.168.0.0/24;};
allow-transfer { localhost; 192.168.0.0/24; };

recursion yes;
dnssec-enable yes;
dnssec-validation yes;
dnssec-lookaside auto;
/* Path to ISC DLV key */
bindkeys-file "/etc/named.iscdlv.key";
};
logging {
channel default_debug {
file "data/named.run";
severity dynamic;
};
};

view "internal" {
match-clients {
localhost;
192.168.0.0/24;
};
zone "." IN {
type hint;
file "named.ca";
};
zone "pure.world" IN {
type master;
file "pure.world.lan";
allow-update { none; };
};
zone "0.168.192.in-addr.arpa" IN {
type master;
file "0.168.192.db";
allow-update { none; };
};
include "/etc/named.rfc1912.zones";
};
view "external" {
match-clients { any; };
allow-query { any; };
recursion no;
zone "pure.world" IN {
type master;
file "pure.world.wan";
allow-update { none; };
};
zone "80.0.168.192.in-addr.arpa" IN {
type master;
file "80.0.168.192.db";
allow-update { none; };
};
};

3.Create zone files that servers resolve IP address from domain name
4.Start BIND

Quote:

[root@localhost ~]# /etc/rc.d/init.d/named start
Starting named:[ OK ]
[root@dlp ~]# chkconfig named on

5.

Quote:

[root@loctalhos ~]# vi /etc/resolv.conf

I get this message!!

Quote:

# Generated by NetworkManager

# No nameservers found; try putting DNS servers into your
# ifcfg files in /etc/sysconfig/network-scripts like so:
#
# DNS1=xxx.xxx.xxx.xxx
# DNS2=xxx.xxx.xxx.xxx
# DOMAIN=lab.foo.com bar.foo.com

Asila · 01-01-2012, 07:07 AM

how can I fix it..PLZ

blue_print · 01-01-2012, 07:15 AM

Can you give more description about this issue?

From your details, I understood that your client systems not showing DNS servers IP in /etc/resolv.conf. Am I right?

If so, Is your clients systems using DHCP IP address or Static IP address?

Asila · 01-02-2012, 12:04 AM

hi sir
yes sir u are right!

actually I'm new in using Linux

I have Linux as server & Win XP as client
And the client gets its IP from DHCP server

blue_print · 01-02-2012, 01:01 AM

1. You must configure DHCP to set the DNS servers as your Linux Server IP
2. You can Linux Server IP (DNS server IP) in Network configuration of Windows and test the DNS

Asila · 01-02-2012, 01:18 AM

yes sir , but how can i do that
when i do the dig comment its reply

Quote:

No nameserver found; try putting DNS server into your ifcfg files in /etc/sysconfig

deep27ak · 01-02-2012, 04:58 AM

post the output of these commands

Code:

#cat /etc/resolv.conf
#nslookup (your hostname)
#cat pure.world.lan
#cat /var/log/messages

Asila · 01-02-2012, 05:27 AM

Quote:

[root@localhost ~]# cat /etc/resolv.conf
# Generated by NetworkManager
domain localdomain
search localdomain
nameserver 192.168.13.2
[root@localhost ~]# nslookup pure.world
Server: 192.168.13.2
Address: 192.168.13.2#53

** server can't find pure.world: NXDOMAIN

[root@localhost ~]# cat pure.world.lan
cat: pure.world.lan: No such file or directory
[root@localhost ~]# #cat /var/log/messages
[root@localhost ~]#

I notes the mistack
how can I solve them

Asila · 01-02-2012, 05:32 AM

how can I Edit this

deep27ak · 01-02-2012, 06:02 AM

try this

Code:

#vi /etc/resolv.conf
(comment these lines)
# Generated by NetworkManager
#domain localdomain
#search localdomain
nameserver 192.168.13.2

I asked you to post your zone file

Code:

[root@localhost ~]# cat pure.world.lan
cat: pure.world.lan: No such file or directory
(go to the location where you have saved your zone file)

Code:

like may be in /var/named/
or
/var/named/chroot/var/named

check the command which you have given?

Code:

[root@localhost ~]# #cat /var/log/messages
[root@localhost ~]# cat /var/log/messages                          <-------notice the change in both lines

deep27ak · 01-02-2012, 06:05 AM

Follow this link. It might be helpful for you

dns-configuration-in-rhel-forward-and-reverse-zone

Asila · 01-02-2012, 07:05 AM

my zone file

Quote:

$TTL 86400
@ IN SOA asd.pure.world. root.pure.world.(
2011071002 ;Serial
3600 ;Refresh
1800 ;Retry
604800 ;Expire
86400 ;Minimum TTL

)

IN NS asd.pure.world.
IN A 192.168.0.30
IN MX 10 asd.pure.world.
asd IN A 192.168.0.30
ftp IN CNAME ftp.pure.world
~
~
~
~
~
~
~
"/var/named/pure.world.lan" 16L, 503C

and the cat /etc/resolv.conf

Quote:

[root@localhost ~]# cat /etc/resolv.conf
# Generated by NetworkManager

# No nameservers found; try putting DNS servers into your
# ifcfg files in /etc/sysconfig/network-scripts like so:
#
# DNS1=xxx.xxx.xxx.xxx
# DNS2=xxx.xxx.xxx.xxx
# DOMAIN=lab.foo.com bar.foo.com
[root@localhost ~]#

I'm new in using Linux

deep27ak · 01-02-2012, 07:35 AM

Code:

#vi named.conf
#listen-on port 53 { 127.0.0.1; 192.168.13.0/24};

listen-on-v6 { none; };
directory"/var/named";
dump-file"/var/named/data/cache_dump.db";
statistics-file"/var/named/data/named_stats.txt";
memstatistics-file"/var/named/data/named_mem_stats.txt";

allow-query{ localhost; 192.168.13.0/24;};
allow-transfer { localhost; 192.168.13.0/24; };

in your zone file

Code:

$TTL 86400
@ IN SOA asd.pure.world. root.pure.world.(
2011071002 ;Serial
3600 ;Refresh
1800 ;Retry
604800 ;Expire
86400 ;Minimum TTL

)

IN NS asd.pure.world.
IN A 192.168.13.2
IN MX 10 asd.pure.world.
asd IN A 192.168.13.2
ftp IN CNAME ftp.pure.world

check your resolv.conf

take a backup of current resolv.conf

Code:

#cp /etc/resolv.conf  /resolv.conf.orig

Code:

#vi /etc/resolv.conf
(remove everyline and add this)
nameserver 192.168.13.2

then restart the service

Code:

#service named restart

try this command and show me the output

Code:

#nslookup asd.pure.world.

Asila · 01-02-2012, 08:40 AM

thank u
But my IP is 192.168.0.0/24
even I Make the change its still give me the same message
No server could be reached

Asila · 01-02-2012, 10:25 AM

vi /etc/named.conf

Quote:

//
// named.conf
//
// Provided by Red Hat bind package to configure the ISC BIND named(8) DNS
// server as a caching only nameserver (as a localhost DNS resolver only).
//
// See /usr/share/doc/bind*/sample/ for example named configuration files.
//

options {
listen-on port 53 {127.0.0.1; 192.168.0.0/24; };
listen-on-v6 port 53 { none; };
directory "/var/named";
dump-file "/var/named/data/cache_dump.db";
statistics-file "/var/named/data/named_stats.txt";
memstatistics-file "/var/named/data/named_mem_stats.txt";
query-source port 53
allow-query { localhost; 192.168.0.0/24;};

allw-transfer {localhost; 192.168.0.0/24;};

recursion yes;

vi /etc/named/pure.world.lan

Quote:

$TTL 86400
@ IN SOA asd.pure.world. root.pure.world.(
2011071002 ;Serial
3600 ;Refresh
1800 ;Retry
604800 ;Expire
86400 ;Minimum TTL

)

IN NS asd.pure.world.
IN A 192.168.0.30
IN MX 10 asd.pure.world.
asd IN A 192.168.0.30
ftp IN CNAME ftp.pure.world
~
~
~
~
~
~
~
"/var/named/pure.world.lan" 16L, 503C

vi /etc/named/pure.world.wan

Quote:

$TTL 86400
@ IN SOA asd.pure.world. root.pure.world.(
2011071001 ;Serial
3600 ;Refresh
1800 ;Retry
604800 ;Expire
86400 ;Minimum TTL

)

IN NS asd.pure.world.
IN A 172.16.0.82
IN MX 10 asd.pure.world.
asd IN A 172.16.0.82
~
~
~
~
~
~
~
~
"/var/named/pure.world.wan" 16L, 506C

vi /etc/named/0.168.192.db

Quote:

$TTL 86400
@ IN SOA asd.pure.world. root.pure.world. (
2011071001 ;Serial
3600 ;Refresh
1800 ;Retry
604800 ;Expire
86400 ;Minimum TTL

)

IN NS asd.pure.world.
IN PTR pure.world.
IN A 255.255.255.0
30 IN PTR asd.pure.world.
~

~
~
~
"/var/named/0.168.192.db" 20L, 410C

vi /etc/named/80.0.168.192.db

Quote:

$TTL 86400
@ IN SOA asd.pure.world. root.pure.world. (
2011071001 ;Serial
3600 ;Refresh
1800 ;Retry
604800 ;Expire
86400 ;Minimum TTL

)

IN NS asd.pure.world.
IN PTR pure.world.
IN A 255.255.255.90
80 IN PTR asd.pure.world.
~
~
~
~
~
~
~
"/var/named/80.0.168.192.db" 17L, 408C

/etc/rc.d/init.d/named start

Quote:

[root@asd ~]# /etc/rc.d/init.d/named start
Starting named: [ OK ]
[root@asd ~]# chkconfig named on
[root@asd ~]#

vi /etc/resolv.conf

Quote:

E325: ATTENTION
Found a swap file by the name "/etc/.resolv.conf.swp"
owned by: root dated: Wed Dec 28 08:48:21 2011
file name: /etc/resolv.conf
modified: YES
user name: root host name: asd.pure.world
process ID: 2574
While opening file "/etc/resolv.conf"
dated: Wed Dec 28 08:18:35 2011

(1) Another program may be editing the same file.
If this is the case, be careful not to end up with two
different instances of the same file when making changes.
Quit, or continue with caution.

(2) An edit session for this file crashed.
If this is the case, use ":recover" or "vim -r /etc/resolv.conf"
to recover the changes (see ":help recovery").
If you did this already, delete the swap file "/etc/.resolv.conf.swp"
to avoid this message.
"/etc/resolv.conf" 10L, 246C
Press ENTER or type command to continue

when I press enter

Quote:

# Generated by NetworkManager
search pure.world

# No nameservers found; try putting DNS servers into your
# ifcfg files in /etc/sysconfig/network-scripts like so:
#
# DNS1=xxx.xxx.xxx.xxx
# DNS2=xxx.xxx.xxx.xxx
# DOMAIN=lab.foo.com bar.foo.com
~
~
~
~
~
~
~
~
~
~
~
~
~

so where are the mistacks