部署DNS服务器

1、安装相关组件

yum -y install bind bind-chroot（bind-chroot为可选组件）
2、配置文件
①chroot环境：
vi /etc/named/chroot/etc/named.conf

options{
directory "/var/named/chroot/var/named/";
};
zone "user.test.com" IN {

type master;
file "user.test.com.zone";
allow-update { none; };
};

vi /var/named/chroot/var/named/user.test.com.zone

$TTL86400
@INSOAuser.test.comroot (
2017070301
1H
10M
7D
1D
)
@INNSuser.test.com.

user.test.com.INA192.168.1.110

②非chroot环境
vi /etc/named.conf

options{
directory "/var/named";
};
zone "user.test.com" IN {

type master;
file "user.test.com.zone";
allow-update { none; };
};

vi /var/named/user.test.com.zone

$TTL86400
@INSOAuser.test.comroot (
2017070301
1H
10M
7D
1D
)
@INNSuser.test.com.

user.test.com.INA192.168.1.110
3、启动服务：
systemctl start named