This post covers the steps on how to install Bind DNS server on CentOS 6.3. Bind is the most popular software and the most widely used Domain Name System (DNS) software on the Internet for providing DNS services. The name BIND stands for “Berkeley Internet Name Domain” and it’s an implementation of the DNS protocols.
1. To install Bind 9 on linux CentOS 6.3 server, run the following command :
[root@centos63 ~]# yum install bind -y
Examples :
[root@centos63 ~]# yum install bind -y Loaded plugins: fastestmirror, presto Loading mirror speeds from cached hostfile * base: ossm.utm.my * extras: ossm.utm.my * updates: ossm.utm.my CentOS6.3-Repository | 4.0 kB 00:00 ... Setting up Install Process Resolving Dependencies --> Running transaction check ---> Package bind.i686 32:9.8.2-0.10.rc1.el6_3.2 will be installed --> Processing Dependency: portreserve for package: 32:bind-9.8.2-0.10.rc1.el6_3.2.i686 --> Running transaction check ---> Package portreserve.i686 0:0.0.4-9.el6 will be installed --> Finished Dependency Resolution Dependencies Resolved ==================================================================================================== Package Arch Version Repository Size ==================================================================================================== Installing: bind i686 32:9.8.2-0.10.rc1.el6_3.2 updates 4.0 M Installing for dependencies: portreserve i686 0.0.4-9.el6 CentOS6.3-Repository 22 k Transaction Summary ==================================================================================================== Install 2 Package(s) Total download size: 4.0 M Installed size: 7.2 M Downloading Packages: Setting up and reading Presto delta metadata updates/prestodelta | 104 kB 00:00 Processing delta metadata Package(s) data still to download: 4.0 M (1/2): bind-9.8.2-0.10.rc1.el6_3.2.i686.rpm | 4.0 MB 00:43 ---------------------------------------------------------------------------------------------------- Total 93 kB/s | 4.0 MB 00:43 Running rpm_check_debug Running Transaction Test Transaction Test Succeeded Running Transaction Installing : portreserve-0.0.4-9.el6.i686 1/2 Installing : 32:bind-9.8.2-0.10.rc1.el6_3.2.i686 2/2 Verifying : portreserve-0.0.4-9.el6.i686 1/2 Verifying : 32:bind-9.8.2-0.10.rc1.el6_3.2.i686 2/2 Installed: bind.i686 32:9.8.2-0.10.rc1.el6_3.2 Dependency Installed: portreserve.i686 0:0.0.4-9.el6 Complete!
2. Setup and configure zone with the name of example.local :
[root@centos63 ~]# vi /var/named/example.local
Add zone record as below :
;
; Addresses and other host information.
;
$TTL 86400
@ IN SOA example.local. hostmaster.example.local. (
2012080701 ; Serial
43200 ; Refresh
3600 ; Retry
3600000 ; Expire
2592000 ) ; Minimum
; Define the nameservers and the mail servers
IN NS ns.example.local.
IN A 192.168.1.54
IN MX 10 mail.example.local.
mail IN A 192.168.1.51
ns IN A 192.168.1.54
www IN A 192.168.1.54
3. Add example.local zone below to named.conf. This is main configuration file for bind dns server.
Modify named.conf :
[root@centos63 ~]# vi /etc/named.conf
Add the following :
zone "example.local" {
type master;
file "/var/named/example.local";
};
Full named.conf configuration file :
//
// 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 port 53 { ::1; };
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; };
recursion yes;
dnssec-enable yes;
dnssec-validation yes;
dnssec-lookaside auto;
/* Path to ISC DLV key */
bindkeys-file "/etc/named.iscdlv.key";
managed-keys-directory "/var/named/dynamic";
};
logging {
channel default_debug {
file "data/named.run";
severity dynamic;
};
};
zone "." IN {
type hint;
file "named.ca";
};
zone "example.local" {
type master;
file "/var/named/example.local";
};
include "/etc/named.rfc1912.zones";
include "/etc/named.root.key";
4. start Named service :
[root@centos63 ~]# /etc/init.d/named start Generating /etc/rndc.key: [ OK ] Starting named: [ OK ]
5. If you want to restart and check the named status, execute the following :
[root@centos63 ~]# /etc/init.d/named restart Stopping named: . [ OK ] Starting named: [ OK ]
[root@centos63 ~]# /etc/init.d/named status version: 9.8.2rc1-RedHat-9.8.2-0.10.rc1.el6_3.2 CPUs found: 1 worker threads: 1 number of zones: 20 debug level: 0 xfers running: 0 xfers deferred: 0 soa queries in progress: 0 query logging is OFF recursive clients: 0/0/1000 tcp clients: 0/100 server is up and running named (pid 2405) is running...
6. For extra checking, verify mx record whether working or not :
[root@centos63 ~]# host -t mx example.local example.local mail is handled by 10 mail.example.local.
nslookup is part of the bind-utils package. Please note that the host, dig and nslookup are also part of the bind utilities. Without bind-utils package installed, you will get the following error when you try to nslookup any domain: