Part-3:
Bind Server Installation + configurations
3.1 Install bind server using yum
[root@dns ~]# yum install -y bind-utils bind-libs bind-* Loaded plugins: fastestmirror, presto Loading mirror speeds from cached hostfile * base: centos.telecoms.bg * extras: centos.telecoms.bg * updates: centos.telecoms.bg Setting up Install Process Resolving Dependencies --> Running transaction check ---> Package bind.i686 32:9.7.3-8.P3.el6_2.3 will be installed ---> Package bind-devel.i686 32:9.7.3-8.P3.el6_2.3 will be installed ---> Package bind-dyndb-ldap.i686 0:0.2.0-7.el6_2.1 will be installed ---> Package bind-libs.i686 32:9.7.3-8.P3.el6_2.3 will be installed ---> Package bind-sdb.i686 32:9.7.3-8.P3.el6_2.3 will be installed ---> Package bind-utils.i686 32:9.7.3-8.P3.el6_2.3 will be installed --> Finished Dependency Resolution Installed: bind.i686 32:9.7.3-8.P3.el6_2.3 bind-devel.i686 32:9.7.3-8.P3.el6_2.3 bind-dyndb-ldap.i686 0:0.2.0-7.el6_2.1 bind-libs.i686 32:9.7.3-8.P3.el6_2.3 bind-sdb.i686 32:9.7.3-8.P3.el6_2.3 bind-utils.i686 32:9.7.3-8.P3.el6_2.3 Complete!
3.2 : Start service and make it available on start up.
[root@dns ~]# service named start && chkconfig named on Starting named: [ OK ]
3.3 : Edit /etc/named.conf (you can use this file’s contents)
[root@dns ~]# 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; 192.168.2.30; };
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; 192.168.2.0/24; };
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;
};
};
zone "." IN {
type hint;
file "named.ca";
};
include "/etc/named.rfc1912.zones";
/* Broexperts.com Forward Zone */
zone "broexperts.com" IN {
type master;
file "broexperts.com.fwd";
allow-update {none;};
};
/* Broexperts.com Reverse Zone */
zone "2.168.192.in-addr.arpa" IN {
type master;
file "broexperts.com.rev";
allow-update {none;};
};
3.4 : create forward zone files in /var/named/
[root@dns ~]# cd /var/named/
[root@dns ~]# vi broexperts.com.fwd
$ORIGIN broexperts.com.
$TTL 84600
@ IN SOA dns.broexperts.com. root@broexperts.com. (
123312 ; serial
1h ; refresh
2h ; retry
1w ; expire
1h) ; min cache
@ IN NS dns.broexperts.com.
@ IN A 192.168.2.30
; Network Hosts
loadb1 IN A 192.168.2.1
loadb2 IN A 192.168.2.2
websrv1 IN A 192.168.2.10
websrv2 IN A 192.168.2.11
dbase1 IN A 192.168.2.20
dbase2 IN A 192.168.2.21
dns IN A 192.168.2.30
ntp IN A 192.168.2.31
3.5 : create reverse zone files in /var/named/
[root@dns ~]# cp broexperts.com.fwd broexperts.com.rev
[root@dns ~]# vi broexperts.com.rev
$ORIGIN 2.168.192.in-addr.arpa.
$TTL 84600
@ IN SOA dns.broexperts.com. root@broexperts.com. (
123312 ; serial
1h ; refresh
2h ; retry
1w ; expire
1h) ; min cache
@ IN NS dns.broexperts.com.
@ IN A 192.168.2.30
; Network Hosts
1 IN PTR loadb1.broexperts.com.
2 IN PTR loadb2.broexperts.com.
10 IN PTR websrv1.broexperts.com.
11 IN PTR websrv2.broexperts.com.
20 IN PTR dbase1.broexperts.com.
21 IN PTR dbase2.broexperts.com.
30 IN PTR dns.broexperts.com.
31 IN PTR ntp.broexperts.com.
3.6 : Restart Service
[root@dns named]# service named restart Stopping named: . [ OK ] Starting named: [ OK ]
Part-4: lvs (Linux virtual server) Active & Backup Load-Balancer settings.