DNS Server Configuration
========================
-- To setup yum installer Follow this Post
1) Install the necessary rpm (bind packages) which are required to configure DNS Server.
[root@standalone2 ~]# yum install -y *bind* caching-nameserver
2) Notedown the Public IP address of the Server.
[root@standalone2 ~]# ifconfig eth0
eth0 Link encap:Ethernet HWaddr 00:0C:29:86:F8:24
inet addr:192.168.0.30 Bcast:192.168.0.255 Mask:255.255.255.0
inet6 addr: fe80::20c:29ff:fe86:f824/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:26338 errors:0 dropped:0 overruns:0 frame:0
TX packets:40786 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:1764870 (1.6 MiB) TX bytes:8763994 (8.3 MiB)
IP Address - 192.168.0.30
3) Modify the named.conf coniguration files
[root@standalone2 ~]# cd /var/named/chroot/etc/
[root@standalone2 etc]# ls -lrt
total 16
-rw-r----- 1 root named 955 Dec 2 2010 named.rfc1912.zones
-rw-r----- 1 root named 1230 Dec 2 2010 named.caching-nameserver.conf
-rw-r--r-- 1 root root 2819 Oct 13 2012 localtime
-rw-r----- 1 root named 113 Oct 4 21:52 rndc.key
[root@standalone2 etc]# cp named.caching-nameserver.conf named.conf
[root@standalone2 etc]# vi named.conf
# edit the named.conf file...
Modify the below lines...
Before Modification
===================
listen-on port 53 { 127.0.0.1; };
listen-on-v6 port 53 { ::1; };
allow-query { localhost; };
allow-query-cache { localhost; };
match-clients { localhost; };
match-destinations { localhost; };
After Modificaton
=================
listen-on port 53 { 192.168.0.30; };
# listen-on-v6 port 53 { ::1; };
allow-query { any; };
allow-query-cache { any; };
match-clients { any; };
match-destinations { 192.168.0.30; };
[root@standalone2 etc]# ls -lrt
total 20
-rw-r----- 1 root named 955 Dec 2 2010 named.rfc1912.zones
-rw-r----- 1 root named 1230 Dec 2 2010 named.caching-nameserver.conf
-rw-r--r-- 1 root root 2819 Oct 13 2012 localtime
-rw-r----- 1 root named 113 Oct 4 21:52 rndc.key
-rw-r----- 1 root root 1219 Oct 4 22:46 named.conf
4. Edit the zones files.
[root@standalone2 etc]# vi named.rfc1912.zones
# Now edit the zone file
Mofiy the below lines.
Before Modification.
====================
zone "localdomain" IN {
file "localdomain.zone";
zone "0.0.127.in-addr.arpa" IN {
file "named.local";
After Modification
===================
zone "manzoor.com" IN {
file "forward.zone";
zone "0.168.192.in-addr.arpa" IN {
file "reverse.zone";
[root@standalone2 etc]# chgrp named named.conf
[root@standalone2 etc]# ls -lrt
total 20
-rw-r----- 1 root named 1230 Dec 2 2010 named.caching-nameserver.conf
-rw-r--r-- 1 root root 2819 Oct 13 2012 localtime
-rw-r----- 1 root named 113 Oct 4 21:52 rndc.key
-rw-r----- 1 root named 1219 Oct 4 22:46 named.conf
-rw-r----- 1 root named 954 Oct 4 23:20 named.rfc1912.zones
[root@standalone2 etc]# cd /var/named/chroot/var/named
[root@standalone2 named]# ls -lrt
total 36
drwxrwx--- 2 named named 4096 Jul 27 2004 slaves
drwxrwx--- 2 named named 4096 Aug 25 2004 data
-rw-r----- 1 root named 427 Dec 2 2010 named.zero
-rw-r----- 1 root named 426 Dec 2 2010 named.local
-rw-r----- 1 root named 424 Dec 2 2010 named.ip6.local
-rw-r----- 1 root named 1892 Dec 2 2010 named.ca
-rw-r----- 1 root named 427 Dec 2 2010 named.broadcast
-rw-r----- 1 root named 195 Dec 2 2010 localhost.zone
-rw-r----- 1 root named 198 Dec 2 2010 localdomain.zone
-- Before in the zone file we have changed the localdoamin.zone to forward.zone and named.local to reverse.zone
so copy the below files with the mentioned name and edit it
[root@standalone2 named]# cp localdomain.zone forward.zone
[root@standalone2 named]# cp named.local reverse.zone
[root@standalone2 named]# vi forward.zone
# Whole file before modification.
================================
$TTL 86400
@ IN SOA localhost root (
42 ; serial (d. adams)
3H ; refresh
15M ; retry
1W ; expiry
1D ) ; minimum
IN NS localhost
localhost IN A 127.0.0.1
# whole file after modification.
================================
$TTL 86400
@ IN SOA standalone2.manzoor.com. root.standalone2.manzoor.com. (
42 ; serial (d. adams)
3H ; refresh
15M ; retry
1W ; expiry
1D ) ; minimum
IN NS standalone2.manzoor.com.
standalone2 IN A 192.168.0.30
[root@standalone2 named]# vi reverse.zone
# Whole file before modification.
================================
$TTL 86400
@ IN SOA localhost. root.localhost. (
1997022700 ; Serial
28800 ; Refresh
14400 ; Retry
3600000 ; Expire
86400 ) ; Minimum
IN NS localhost.
1 IN PTR localhost.
# whole file after modification.
================================
$TTL 86400
@ IN SOA standalone2.manzoor.com. root.standalone2.manzoor.com. (
1997022700 ; Serial
28800 ; Refresh
14400 ; Retry
3600000 ; Expire
86400 ) ; Minimum
IN NS standalone2.manzoor.com.
30 IN PTR standalone2.manzoor.com.
-- in the above 30 is the last pointer in the ip address 192.168.0.30
-- Change the group of forward.zone and reverse.zone files to named group.
[root@standalone2 named]# chgrp named forward.zone
[root@standalone2 named]# chgrp named reverse.zone
[root@standalone2 named]# ls -lrt
total 44
drwxrwx--- 2 named named 4096 Jul 27 2004 slaves
drwxrwx--- 2 named named 4096 Aug 25 2004 data
-rw-r----- 1 root named 427 Dec 2 2010 named.zero
-rw-r----- 1 root named 426 Dec 2 2010 named.local
-rw-r----- 1 root named 424 Dec 2 2010 named.ip6.local
-rw-r----- 1 root named 1892 Dec 2 2010 named.ca
-rw-r----- 1 root named 427 Dec 2 2010 named.broadcast
-rw-r----- 1 root named 195 Dec 2 2010 localhost.zone
-rw-r----- 1 root named 198 Dec 2 2010 localdomain.zone
-rw-r----- 1 root named 258 Oct 4 23:25 forward.zone
-rw-r----- 1 root named 482 Oct 4 23:28 reverse.zone
[root@standalone2 named]# cat /etc/hosts
# Do not remove the following line, or various programs
# that require network functionality will fail.
127.0.0.1 localhost.localdomain localhost
::1 localhost6.localdomain6 localhost6
##################################################
#### Public ips #################################
192.168.0.30 standalone2.manzoor.com standalone2
5) Edit the resolv.conf file modify the localdomain to your domain name
and the nameserver ip address to the public ip of this server.
[root@standalone2 named]# vi /etc/resolv.conf
# Edit file as per below details.
search manzoor.com
nameserver 192.168.0.30
-- Host name should be updated in network file as below
[root@standalone2 named]# cat /etc/sysconfig/network
NETWORKING=yes
NETWORKING_IPV6=no
HOSTNAME=standalone2.manzoor.com
-- Restart the named service
[root@standalone2 named]# service named restart
Stopping named: [ OK ]
Starting named: [ OK ]
-- Test the dns
[root@standalone2 named]# dig standalone2.manzoor.com
; <<>> DiG 9.3.6-P1-RedHat-9.3.6-16.P1.el5 <<>> standalone2.manzoor.com
;; global options: printcmd
;; Got answer:
;; ->>HEADER<<- 6354="" id:="" noerror="" opcode:="" p="" query="" status:="">;; flags: qr aa rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 1, ADDITIONAL: 0
;; QUESTION SECTION:
;standalone2.manzoor.com. IN A
;; ANSWER SECTION:
standalone2.manzoor.com. 86400 IN A 192.168.0.30
;; AUTHORITY SECTION:
manzoor.com. 86400 IN NS standalone2.manzoor.com.
;; Query time: 4 msec
;; SERVER: 192.168.0.30#53(192.168.0.30)
;; WHEN: Fri Oct 4 23:32:47 2013
;; MSG SIZE rcvd: 71
- We got the answer without error.
[root@standalone2 named]# nslookup standalone2.manzoor.com
Server: 192.168.0.30
Address: 192.168.0.30#53
Name: standalone2.manzoor.com
Address: 192.168.0.30
[root@standalone2 named]# nslookup 192.168.0.30
Server: 192.168.0.30
Address: 192.168.0.30#53
30.0.168.192.in-addr.arpa name = standalone2.manzoor.com.
== DNS Configuration for the server has been completed =====================
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