centOS7.9 DNS配置

1.DNS规划

dns.sohu.com	192.168.110.111	A
www.sohucom	192.168.110.112	A
oa.sohu.com	192.168.110.113	A

2.安装 bind

yum install -y bind bind-utils

3. 编辑主配置文件

vim /etc/named.conflisten- on port 53 { any; };
allow- query { any;	};  

4.配置区域文件

vim /etc/named.rfc1912.zoneszone "sohu.com" IN {type master;file "sohu.com.zone";
};zone "110.168.192.in-addr.arpa" IN {type master;file "110.168.192.zone";
};

5.配置正向解析文件

cp -p /var/named/named.localhost /var/named/sohu.com.zonevim /var/named/sohu.com.zone$TTL 1D
@       IN SOA  sohu.com. root.sohu.com. (1       ; serial  1D      ; refresh1H      ; retry1W      ; expire3H )    ; minimumNS      dns.sohu.com.
dns          A       192.168.110.111
test1        A       192.168.110.201
test2        A       192.168.110.202

6.配置反向解析文件

cp -p /var/named/named.empty /var/named/110.168.192.zonevim /var/named/110.168.192.zone$TTL 3H
@    IN SOA  sohu.com. root.sohu.com. (1       ; serial1D      ; refresh1H      ; retry1W      ; expire3H )    ; minimumNS     dns.sohu.com.
201     PTR     test1.sohu.com.
202     PTR     test2.sohu.com.
202     PTR     testc.sohu.com.

7.测试机设置dns

vim /etc/resolv.confnameserver 192.168.110.111

8.放行端口

firewall-cmd --permanent --add-port=53/tcp --zone=public
firewall-cmd --permanent --add-port=53/udp --zone=public
firewall-cmd --reload

9.启动named，并测试

systemctl restart namednslookup测试

切记：测试的客户机的DNS一定要设置为：192.168.110.111；测试环境：局域网内