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DNS£¨Domain Name System£©ÊÇ»¥ÁªÍøÉÏÓÃÓÚ½«ÓòÃûת»»ÎªIPµØµãµÄϵͳ¡£ÔÚLinuxϵͳÖУ¬ÎÒÃÇ¿ÉÒÔʹÓÃһЩ¿ªÔ´Èí¼þÀ´ÉèÖúÍÖÎÀíDNSЧÀÍ¡£±¾ÎĽ«ÏÈÈÝÔõÑùÔÚLinuxÉϾÙÐÐDNSЧÀ͵ÄÉèÖúÍÖÎÀí£¬Í¬Ê±ÌṩÏêϸµÄ´úÂëʾÀý¡£

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sudo apt-get update
sudo apt-get install bind9

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Ò»µ©DNSЧÀÍÆ÷Èí¼þ×°ÖÃÍê³É£¬ÎÒÃÇÐèÒª±à¼­Ö÷ÒªµÄÉèÖÃÎļþÒÔÖ¸¶¨DNSЧÀÍÆ÷µÄÐÐΪ¡£ÒÔÏÂÊÇBindµÄÖ÷ÒªÉèÖÃÎļþʾÀý£¨Â·¾¶Îª/etc/bind/named.conf£©£º

// È«¾ÖÉèÖÃ
options {
  directory "/var/cache/bind";
  recursion yes;
  allow-recursion { any; };
};

// ½ç˵ÍâµØÇøÃûÇøÓò
zone "example.com" {
  type master;
  file "/etc/bind/db.example.com";
};

// ½ç˵·´ÏòÆÊÎöÇøÓò
zone "0.168.192.in-addr.arpa" {
  type master;
  file "/etc/bind/db.192";
};

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³ýÁËÉèÖÃÖ÷ÒªµÄÉèÖÃÎļþÍ⣬ÎÒÃÇ»¹ÐèÒª½¨ÉèÓòÃûÆÊÎöÎļþÒÔÖ¸¶¨ÓòÃûºÍIPµØµãµÄ¶ÔÓ¦¹Øϵ¡£ÒÔÏÂÊÇʾÀýµÄÓòÃûÆÊÎöÎļþ£¨Â·¾¶Îª/etc/bind/db.example.com£©£º

$ORIGIN .
$TTL 86400
example.com    IN    SOA    ns1.example.com. admin.example.com. (
                              2021102601 ; serial
                              3600       ; Ë¢ÐÂÖÜÆÚ
                              1800       ; ÖØÊÔÖÜÆÚ
                              604800     ; ÓâÆÚʱ¼ä
                              86400      ; »º´æʱ¼ä
                              )
        NS    ns1.example.com.
        NS    ns2.example.com.
        A     192.168.0.10
$ORIGIN example.com.
ns1     A     192.168.0.10
ns2     A     192.168.0.20
www     CNAME example.com.

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ΪÁËʵÏÖ´ÓIPµØµãµ½ÓòÃûµÄÆÊÎö£¬ÎÒÃÇ»¹ÐèÒªÉèÖ÷´ÏòÆÊÎöÎļþ¡£ÒÔÏÂÊÇʾÀýµÄ·´ÏòÆÊÎöÎļþ£¨Â·¾¶Îª/etc/bind/db.192£©£º

$ORIGIN .
$TTL 86400
0.168.192.in-addr.arpa    IN    SOA    ns1.example.com. admin.example.com. (
                                           2021102601 ; serial
                                           3600       ; Ë¢ÐÂÖÜÆÚ
                                           1800       ; ÖØÊÔÖÜÆÚ
                                           604800     ; ÓâÆÚʱ¼ä
                                           86400      ; »º´æʱ¼ä
                                           )
        NS    ns1.example.com.
        NS    ns2.example.com.
10      PTR   example.com.

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Íê³ÉÒÔÉÏÉèÖúó£¬ÎÒÃÇÐèÒªÖØÆôDNSЧÀÍÒÔʹÉèÖÃÉúЧ¡£ÒÔÏÂÊÇʾÀýµÄÖØÆôÏÂÁÊÊÓÃÓÚDebian/Ubuntuϵͳ£©£º

sudo systemctl restart bind9

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ΪÁËÑéÖ¤DNSЧÀ͵Ä׼ȷÐÔ£¬ÎÒÃÇ¿ÉÒÔʹÓÃdigÏÂÁîÅÌÎÊÖ¸¶¨ÓòÃûµÄIPµØµã¡£ÒÔÏÂÊÇʾÀýµÄdigÏÂÁ

dig example.com

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Çë×¢ÖØ£¬ÒÔÉÏʾÀýÖеÄ·¾¶ºÍÎļþÃû¿ÉÄÜ»áÓÉÓÚ²î±ðµÄLinux¿¯Ðаæ¶øÓÐËù²î±ð¡£ÔÚÏÖʵÉèÖÃÖУ¬Çëƾ֤×Ô¼ºµÄÇéÐνϸÄ·¾¶ºÍÎļþÃû¡£

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BIND 9 Administrator Reference Manual: https://downloads.isc.org/isc/bind9/cur/9.16/doc/arm/Bv9ARM.ch01.html

“How To Configure BIND as a DNS Server on Ubuntu 20.04”: https://www.digitalocean.com/community/tutorials/how-to-configure-bind-as-a-dns-server-on-ubuntu-20-04-zh

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