架构师成长之路-DNS服务器搭建(添加记录、负载均衡、DNS视图)
架构师成长之路-DNS服务器搭建(添加记录、负载均衡、DNS视图)
1.添加A记录、CNAME记录、MX记录、PTR记录
1.1 添加A记录
编辑主DNS : /var/named/chroot/etc/carlos.com.zone,在文件末尾添加一条记录
\$ORIGIN . \$TTL 3600 ; 1 hour carlos.com IN SOA op.Carlos.com. dns.carlos.com. ( 2003 ; serial 900 ; refresh (15 minutes) 600 ; retry (10 minutes) 86400 ; expire (1 day) 3600 ; minimum (1 hour)#TTL ) NS op.carlos.com. \$ORIGIN carlos.com. shanks A 1.2.3.4 op A 1.2.3.4 a A 192.168.122.100
注意:
- 将serial值+1 , 从DNS才能主动同步
- 执行rndc reload命令
- 分别对主从DNS解析下:host a.carlos.com 127.0.0.1结果应该是192.168.122.100
1.2.添加CNAME记录
编辑主DNS : /var/named/chroot/etc/carlos.com.zone,在文件末尾添加一条记录
\$ORIGIN . \$TTL 3600 ; 1 hour carlos.com IN SOA op.Carlos.com. dns.carlos.com. ( 2004 ; serial 900 ; refresh (15 minutes) 600 ; retry (10 minutes) 86400 ; expire (1 day) 3600 ; minimum (1 hour)#TTL ) NS op.carlos.com. \$ORIGIN carlos.com. shanks A 1.2.3.4 op A 1.2.3.4 a A 192.168.122.100 cname CNAME a.carlos.com.
注意:
- 将serial值+1 , 从DNS才能主动同步
- 执行rndc reload命令
- 分别对主从DNS解析下:host cname.carlos.com 127.0.0.1结果应该是192.168.122.100
1.3.添加MX记录
编辑主DNS :/var/named/chroot/etc/carlos.com.zone,在文件末尾添加一条记录
\$ORIGIN . \$TTL 3600 ; 1 hour carlos.com IN SOA op.Carlos.com. dns.carlos.com. ( 2005 ; serial 900 ; refresh (15 minutes) 600 ; retry (10 minutes) 86400 ; expire (1 day) 3600 ; minimum (1 hour)#TTL ) NS op.carlos.com. \$ORIGIN carlos.com. shanks A 1.2.3.4 op A 1.2.3.4 a A 192.168.122.100 cname CNAME a.carlos.com. MX MX 5 1 92.168.122.101
注意:
- 将serial值+1 , 从DNS才能主动同步
- 执行rndc reload命令
- 分别对主从DNS解析下:host mx.carlos.com 127.0.0.1结果应该是192.168.122.100
1.4.添加PTR记录
编辑主DNS :/var/named/chroot/etc/view.conf,加入ptr的zone配置
zone "168.192.in-addr.arpa" { type master; file "168.192.zone"; allow-transfer { 10.6.0.254; }; notify yes; also-notify { 10.6.0.254; }; };
编辑主DNS :/var/named/chroot/etc/168.192.zone
$TTL 3600 ; 1 hour @ IN SOA op.carlos.com. dns.carlos.com. ( 2006 ; serial 900 ; refresh (15 minutes) 600 ; retry (10 minutes) 86400 ; expire (1 day) 3600 ; minimum (1 hour) ) NS op.carlos.com. 102.122 IN PTR a.carlos.com.
修改168.192.zone文件的属性
chown named.named 168.192.zone rndc reload
编辑从DNS:/var/named/chroot/etc/view.conf,加入ptr的zone配置
zone "168.192.in-addr.arpa" { type slave; masters {10.5.35.14; }; file "slave.168.192.zone"; };
从DNS执行rndc reload命令。
分别对两台机器做ptr记录的解析 host 192.168.122.102 127.0.0.1 结果应为a.carlos.com 。
2. 通过DNS实现服务的负载均衡
编辑主DNS:/var/named/chroot/etc/carlos.com.zone,在文件末尾添加一条记录
\$ORIGIN . \$TTL 3600 ; 1 hour carlos.com IN SOA op.Carlos.com. dns.carlos.com. ( 2007 ; serial 900 ; refresh (15 minutes) 600 ; retry (10 minutes) 86400 ; expire (1 day) 3600 ; minimum (1 hour)#TTL ) NS op.carlos.com. \$ORIGIN carlos.com. shanks A 1.2.3.4 op A 1.2.3.4 a A 192.168.122.100 cname CNAME a.carlos.com. MX MX 5 192.168.122.101 a A 192.168.122.101
注意:
- 将serial值+1 , 从DNS才能主动同步
- 执行rndc reload命令
- 分别对主、从DNS解析下:host a.carlos.com 127.0.0.1结果应该是192.168.122.100和192.168.122.101
3. 配置DNS视图(智能DNS)
配置主DNS: /var/named/chroot/etc/named.conf,在include上面添加
acl group1 { 10.5.35.14; }; acl group2 { 10.5.35.15; };
配置主DNS: /var/named/chroot/etc/view.conf
view "GROUP1" { match-clients { group1; }; zone "viewcarlos.com" { type master; file "group1.viewcarlos.com.zone"; }; }; view "GROUP2" { match-clients { group2; }; zone "viewcarlos.com" { type master; file "group2.viewcarlos.com.zone"; }; };
配置主DNS: /var/named/chroot/etc/group1.viewcarlos.com.zone
$ORIGIN . $TTL 3600 ; 1 hour viewcarlos.com IN SOA op.viewcarlos.com. dns.viewcarlos.com. ( 2008 ; serial 900 ; refresh (15 minutes) 600 ; retry (10 minutes) 86400 ; expire (1 day) 3600 ; minimum (1 hour) ) NS op.viewcarlos.com. $ORIGIN viewcarlos.com. op A 192.168.122.1 view A 192.168.122.1
修改文件所属,加载配置。
chown named.named /var/named/chroot/etc/group*.zone rndc reload
分别在主机A与B上做view.viewcarlos.com的域名解析测试,结果应为主机A上是192.168.122.1,主机B上是192.168.122.2
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作者:CARLOS_CHIANG
出处:http://www.cnblogs.com/yaoyaojcy/
本文版权归作者和博客园共有,欢迎转载,但未经作者同意必须保留此段声明,且在文章页面明显位置给出原文链接。
posted on 2019-01-16 00:49 CARLOS_KONG 阅读(455) 评论(0) 编辑 收藏 举报