智能DNS
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使用bind软件搭建智能DNS文档配置/etc/named.conf配置文件内容:
acl CN { 10.0.0.0/16; 127.0.0.1/8; }; acl US { 10.1.0.0/16; }; acl RU { 10.2.0.0/16; }; options { listen-on port 53 { 127.0.0.1; 10.0.0.200; }; #listen-on-v6 { none; }; 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 { 127.0.0.1; 10.0.0.0/8; }; #allow-transfer { 10.0.0.200; }; forward first; forwarders { 8.8.8.8; 8.8.4.4; }; interface-interval 30; recursion yes; dnssec-enable no; dnssec-validation no; dnssec-lookaside auto; bindkeys-file "/etc/named.iscdlv.key"; managed-keys-directory "/var/named/dynamic"; pid-file "/run/named/named.pid"; session-keyfile "/run/named/session.key"; }; logging { # channel default_debug { # file "data/named.run"; # severity dynamic; # }; channel default-log { file "/var/log/named/named_default.log" versions 10 size 200m; severity info; print-time yes; }; channel lamer-log { file"/var/log/named/named_lamer.log" versions 3 size 100m; severity info; print-severity yes; print-time yes; print-category yes; }; channel query-log { file "/var/log/named/named_query.log" versions 10 size 1000m; severity info; print-time yes; }; channel security-log { file"/var/log/named/named_security.log" versions 3 size 100m; severity info; print-severity yes; print-time yes; print-category yes; }; category lame-servers { lamer-log; }; category security{ security-log;}; category queries { query-log;}; category default { default-log;}; }; #view "." { # match-clients { CN;US;RU }; # zone "." IN { # type hint; # file "named.ca"; # }; #}; include "/etc/named.rfc1912.zones"; include "/etc/named.root.key";
文件/etc/named.rfc1912.zones内容:
zone "localhost" IN { type master; file "named.localhost"; allow-update { none; }; }; zone "1.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.ip6.arpa" IN { type master; file "named.loopback"; allow-update { none; }; }; zone "1.0.0.127.in-addr.arpa" IN { type master; file "named.loopback"; allow-update { none; }; }; zone "0.in-addr.arpa" IN { type master; file "named.empty"; allow-update { none; }; }; zone "domain.com" IN { type master; file "domain.com.zone"; }; #zone "0.0.10.in-addr.arpa" IN { # type master; # file "10.0.0.zone"; #}; }; view CN { match-clients { 10.0.0.0/16; 127.0.0.1/8; }; zone "localhost.localdomain" IN { type master; file "named.localhost"; allow-update { none; }; }; view US { match-clients { 10.0.1.0/16 }; zone "domain.com" IN { type master; file "domain.com.us"; }; }; view RU { match-clients { 10.2.0.0./16; }; zone "domain.com" IN { type master; file "domain.com.ru"; }; };
在配置智能DNS的时候主要的配置区域是view,配置对应于相同的acl即可。
然后在/var/named/目录下新建各个区域的DNS解析文件。
配置各个区域的文件DNS的时候和配置DNS文件一致。
配置一个主DNS,然后在各个区域配置一个从DNS。master-slaver的形式同步更能达到效果。
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