Configure DNS Server on CentOS 5.3
Check if dns already installed
# rpm -qa | grep bind
bind-libs-9.3.4-10.P1.el5
ypbind-1.19-11.el5
bind-chroot-9.3.4-10.P1.el5
bind-9.3.4-10.P1.el5
bind-utils-9.3.4-10.P1.el5
[root@mail ~]#
Great, its installed.
Starting bind
# /etc/init.d/named start
Locating /var/named/chroot//etc/named.conf failed:
[FAILED]
Ok, time to configure.
Remove
# yum remove dnsmasq
# yum remove bind-chroot-9.3.4-10.P1.el5
# yum remove bind-9.3.4-10.P1.el
Install
# yum install bind
# nano /etc/named.conf
Put these lines :
options {
directory “/var/named”;
query-source port 53;
allow-transfer {
localhost;
};
};
zone “digitalfusi.com” {
type master;
file “digitalfusi.com.db”;
};
zone “localhost” {
type master;
file “localhost.db”;
};
zone “0.0.127.in-addr.arpa” {
type master;
file “127.0.0.rev”;
};
zone “.” in {
type hint;
file “root.db”;
};
# nano /var/named/digitalfusi.com.db
$TTL 2d ; 172800 seconds
$ORIGIN digitalfusi.com.
@ IN SOA digitalfusi.com. hostmaster.digitalfusi.com. (
2008051200 ; serial number (change when you modify DNS)
1d12h ; refresh = 1 day 12 hours
15M ; update retry = 15 minutes
3W12h ; expiry = 3 weeks + 12 hours
2h20M ) ; minimum = 2 hours + 20 minutes
@ IN NS ns1.digitalfusi.com.
@ IN A 192.168.12.105
ns1 IN A 192.168.12.105
www IN A 192.168.12.105
mail IN A 192.168.12.105
mail2 IN A 192.168.12.105
postfixadmin IN A 192.168.12.105
mailguard IN A 192.168.12.105
# nano /var/named/localhost.db
$TTL 2d
$ORIGIN localhost.
@ IN SOA localhost. hostmaster.localhost. (
2008051101 ; serial number (change when you modify DNS)
1d12h ; refresh = 1 day 12 hours
15M ; update retry = 15 minutes
3W12h ; expiry = 3 weeks + 12 hours
2h20M ) ; minimum = 2 hours + 20 minutes
@ IN NS localhost.
@ IN A 127.0.0.1
# nano /var/named/127.0.0.rev
$TTL 2d
$ORIGIN 0.0.127.in-addr.arpa.
@ IN SOA localhost. hostmaster.localhost. (
2008051101 ; serial number (change when you modify DNS)
1d12h ; refresh = 1 day 12 hours
15M ; update retry = 15 minutes
3W12h ; expiry = 3 weeks + 12 hours
2h20M ) ; minimum = 2 hours + 20 minutes
@ IN NS localhost.
1 IN PTR localhost.
# nano /var/named/root.db
; This file holds the information on root name servers needed to
; initialize cache of Internet domain name servers
; (e.g. reference this file in the “cache . <file>”
; configuration file of BIND domain name servers).
;
; This file is made available by InterNIC
; under anonymous FTP as
; file /domain/named.root
; on server FTP.INTERNIC.NET
; -OR- RS.INTERNIC.NET
;
; last update: Feb 04, 2008
; related version of root zone: 2008020400
;
; formerly NS.INTERNIC.NET
;
. 3600000 IN NS A.ROOT-SERVERS.NET.
A.ROOT-SERVERS.NET. 3600000 A 198.41.0.4
A.ROOT-SERVERS.NET. 3600000 AAAA 2001:503:BA3E::2:30
;
; formerly NS1.ISI.EDU
;
. 3600000 NS B.ROOT-SERVERS.NET.
B.ROOT-SERVERS.NET. 3600000 A 192.228.79.201
;
; formerly C.PSI.NET
;
. 3600000 NS C.ROOT-SERVERS.NET.
C.ROOT-SERVERS.NET. 3600000 A 192.33.4.12
;
; formerly TERP.UMD.EDU
;
. 3600000 NS D.ROOT-SERVERS.NET.
D.ROOT-SERVERS.NET. 3600000 A 128.8.10.90
;
; formerly NS.NASA.GOV
;
. 3600000 NS E.ROOT-SERVERS.NET.
E.ROOT-SERVERS.NET. 3600000 A 192.203.230.10
;
; formerly NS.ISC.ORG
;
. 3600000 NS F.ROOT-SERVERS.NET.
F.ROOT-SERVERS.NET. 3600000 A 192.5.5.241
F.ROOT-SERVERS.NET. 3600000 AAAA 2001:500:2f::f
;
; formerly NS.NIC.DDN.MIL
;
. 3600000 NS G.ROOT-SERVERS.NET.
G.ROOT-SERVERS.NET. 3600000 A 192.112.36.4
;
; formerly AOS.ARL.ARMY.MIL
;
. 3600000 NS H.ROOT-SERVERS.NET.
H.ROOT-SERVERS.NET. 3600000 A 128.63.2.53
H.ROOT-SERVERS.NET. 3600000 AAAA 2001:500:1::803f:235
;
; formerly NIC.NORDU.NET
;
. 3600000 NS I.ROOT-SERVERS.NET.
I.ROOT-SERVERS.NET. 3600000 A 192.36.148.17
;
; operated by VeriSign, Inc.
;
. 3600000 NS J.ROOT-SERVERS.NET.
J.ROOT-SERVERS.NET. 3600000 A 192.58.128.30
J.ROOT-SERVERS.NET. 3600000 AAAA 2001:503:C27::2:30
;
; operated by RIPE NCC
;
. 3600000 NS K.ROOT-SERVERS.NET.
K.ROOT-SERVERS.NET. 3600000 A 193.0.14.129
K.ROOT-SERVERS.NET. 3600000 AAAA 2001:7fd::1
;
; operated by ICANN
;
. 3600000 NS L.ROOT-SERVERS.NET.
L.ROOT-SERVERS.NET. 3600000 A 199.7.83.42
;
; operated by WIDE
;
. 3600000 NS M.ROOT-SERVERS.NET.
M.ROOT-SERVERS.NET. 3600000 A 202.12.27.33
M.ROOT-SERVERS.NET. 3600000 AAAA 2001:dc3::35
; End of File
Testing start dns
# /etc/init.d/named start
Starting named: [ OK ]
Activate dns server in /etc/resolv.conf into like this
search digitalfusi.com
nameserver 192.168.12.105
nameserver 192.168.12.1
Try if dns work
# dig digitalfusi.com
; <<>> DiG 9.3.4-P1 <<>> digitalfusi.com
;; global options: printcmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 39096
;; flags: qr aa rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 1, ADDITIONAL: 1
;; QUESTION SECTION:
;digitalfusi.com. IN A
;; ANSWER SECTION:
digitalfusi.com. 172800 IN A 192.168.12.105
;; AUTHORITY SECTION:
digitalfusi.com. 172800 IN NS ns1.digitalfusi.com.
;; ADDITIONAL SECTION:
ns1.digitalfusi.com. 172800 IN A 192.168.12.105
;; Query time: 10 msec
;; SERVER: 192.168.12.105#53(192.168.12.105)
;; WHEN: Mon May 4 20:07:52 2009
;; MSG SIZE rcvd: 83
Yes, it work for resolve dns and serve dns.
