构建DNS主 从服务器

所有服务器：
iptables -F
systemctl stop firewalld
setenforce 0

配置yum

主服务器：
[root@localhost ~]# yum -y install bind
[root@localhost ~]# vim /etc/resolv.conf
# Generated by NetworkManager
nameserver 192.168.200.111
nameserver 192.168.200.112
[root@localhost ~]# vim /etc/hosts
127.0.0.1 localhost localhost.localdomain localhost4
localhost4.localdomain4
::1 localhost localhost.localdomain localhost6
localhost6.localdomain6
192.168.200.111 ns1.crushlinux.com
192.168.200.112 ns2.crushlinux.com

[root@localhost ~]# vim /etc/named.conf
options {
directory "/var/named";
};

zone "crushlinux.com" IN {
type master;
file "crushlinux.zheng";
allow-transfer { 192.168.200.112; };
};

zone "200.168.192.in-addr.arpa" IN {
type master;
file "crushlinux.fan";
allow-transfer { 192.168.200.112; };
};

[root@localhost ~]# vim /var/named/crushlinux.zheng
$TTL 86400
@ IN SOA crushlinux.com.
admin.crushlinux.com. (
20190817
3H
15M
1W
1D
)
IN NS ns1.crushlinux.com.
IN NS ns2.crushlinux.com.
IN MX 10 mail.crushlinux.com.
ns1 IN A 192.168.200.111
ns2 IN A 192.168.200.112
mail IN A 192.168.200.113
www IN A 192.168.200.114
study IN A 192.168.200.115
* IN A 192.168.200.111
ftp IN CNAME www

[root@localhost ~]# vim /var/named/crushlinux.fan
$TTL 86400
@ IN SOA crushlinux.com.
admin.crushlinux.com. (
20190817
3H
15M
1W
1D
)
IN NS ns1.crushlinux.com.
IN NS ns2.crushlinux.com.
IN MX 10 mail.crushlinux.com.
111 IN PTR ns1.crushlinux.com.
112 IN PTR
ns2.crushlinux.com.
113 IN PTR mail.crushlinux.com.
114 IN PTR www.crushlinux.com.
115 IN PTR study.crushlinux.com.
111 IN PTR ns1.crushlinux.com.
[root@localhost ~]# chown :named /var/named/crushlinux.*
[root@localhost ~]# named-checkconf -z /etc/named.conf
[root@localhost ~]# named-checkzone crushlinux.com
/var/named/crushlinux.zheng
[root@localhost ~]# named-checkzone crushlinux.com
/var/named/crushlinux.fan
[root@localhost ~]# systemctl restart named

==========================================================
=====================
从服务器：
[root@localhost ~]# yum -y install bind
[root@localhost ~]# vim /etc/resolv.conf
# Generated by NetworkManager
nameserver 192.168.200.111
nameserver 192.168.200.112
[root@localhost ~]# vim /etc/hosts
127.0.0.1 localhost localhost.localdomain localhost4
localhost4.localdomain4
::1 localhost localhost.localdomain localhost6
localhost6.localdomain6
192.168.200.111 ns1.crushlinux.com
192.168.200.112 ns2.crushlinux.com

[root@localhost ~]# vim /etc/named.conf
options {
directory "/var/named";
};

zone "crushlinux.com" IN {
type slave;
file "slaves/crushlinux.zheng";
masters { 192.168.200.111; };
};
zone "200.168.192.in-addr.arpa" IN {
type slave;
file "slaves/crushlinux.fan";
masters { 192.168.200.111; };
};

[root@localhost ~]# systemctl restart named