CentOS 7
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Set CNAME
2014/07/10
 
If you'd like to set another name to your Host, define CNAME record in a zone file.
[1] Set CNAME record in zone file.
[root@dlp ~]#
vi /var/named/srv.world.lan 
$TTL 86400
@   IN  SOA     dlp.srv.world. root.srv.world. (
# update serial

        2014071002  ;Serial

        3600        ;Refresh
        1800        ;Retry
        604800      ;Expire
        86400       ;Minimum TTL
)

        IN  NS      dlp.srv.world.
        IN  A       10.0.0.30
        IN  MX 10   dlp.srv.world.

dlp     IN  A       10.0.0.30
# [ aliase IN CNAME server's name ]

ftp     IN  CNAME   dlp.srv.world.
[root@dlp ~]#
systemctl restart named

[root@dlp ~]#
dig ftp.srv.world. 


; <<>> DiG 9.9.4-RedHat-9.9.4-14.el7 <<>> ftp.srv.world.
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 64374
;; flags: qr aa rd ra; QUERY: 1, ANSWER: 2, AUTHORITY: 1, ADDITIONAL: 1

;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 4096
;; QUESTION SECTION:
;ftp.srv.world.              IN      A

;; ANSWER SECTION:
ftp.srv.world.       86400   IN      CNAME   dlp.srv.world.
dlp.srv.world.       86400   IN      A       10.0.0.30

;; AUTHORITY SECTION:
srv.world.           86400   IN      NS      dlp.srv.world.

;; Query time: 1 msec
;; SERVER: 10.0.0.30#53(10.0.0.30)
;; WHEN: Thu Jul 10 14:54:56 JST 2014
;; MSG SIZE  rcvd: 93
 
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