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Author: techfox9

Linux DNS configuration notes..

Wednesday, July 1st, 2009 @ 11:53 am

  • — The DNS server is ‘named’
    — $ ps -ef | egrep named
    — $ /etc/init.d/named status
    — Config file is /etc/named.conf (see example below)

  • — Configuration examples in /etc/named.conf file 
    -- // Reverse DNS map
zone "10.168.192.in-addr.arpa" {
        type master;
        file "/var/named/192.168.10.rev";
        };

    -- // Forward DNS map
zone "mydomain.com" {
        type master;
        file "/var/named/mydomain.com.hosts";
        };

  • — file “/var/named/mydomain.com.hosts” 
    $ttl 38400
@       IN      SOA     dns.mydomain.com. root (
                        2008081601
                        10800
                        3600
                        604800
                        38400 )
                IN      NS      dns.mydomain.com.
                IN      MX      10 dns.mydomain.com.
dns             IN      A       192.168.10.2
mach01          IN      A       192.168.10.50
;; .. other machines..
machdbs01       IN      A       10.100.2.21
ecnfs02         IN      CNAME   machdbs01
ecnapp02        IN      CNAME   machdbs01
;; External machines
machext01       IN      A       68.246.97.42
ecnpart02       IN      A       68.246.97.43
....

Linux

 

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