[6] Aliasy (CNAME)

Jeśli chcesz, możesz ustawić aliasy (dodatkowe nazwy) dla hostów. Aliasy ustawiamy w pliku strefy.

[1] Ustaw rekord CNAME w pliku strefy

[root@lsr01vm ~]# mcedit /var/named/zicher.lab.lan

$TTL 86400
@ IN SOA lsr01vm.zicher.lab. root.zicher.lab. (
# zaktualizuj serial, jeśli zmieniasz plik strefy
2020052901 ;Serial
3600 ;Refresh
1800 ;Retry
604800 ;Expire
86400 ;Minimum TTL
)
IN NS lsr01vm.zicher.lab.
IN A 192.168.100.101
IN MX 10 lsr01vm.zicher.lab.

lsr01vm IN A 192.168.100.1
lsr02vm IN A 192.168.100.2

# [alias] IN CNAME [oryginalna nazwa]
ftp IN CNAME lsr01vm.zicher.lab.

[root@lsr01vm ~]# rndc reload
server reload successful

[root@lsr01vm ~]# dig ftp.zicher.lab.

; <<>> DiG 9.11.4-P2-RedHat-9.11.4-26.P2.el8 <<>> ftp.zicher.lab.
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 50474
;; flags: qr aa rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 1, ADDITIONAL: 1

;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 4096
; COOKIE: 7bd08844003a3df231eae5485ed3c231e7d9ba5752e2cc37 (good)
;; QUESTION SECTION:
;ftp.zicher.lab. IN A

;; ANSWER SECTION:
ftp.zicher.lab. 86400 IN CNAME lsr01vm.zicher.lab.zicher.lab.

;; AUTHORITY SECTION:
zicher.lab. 86400 IN SOA lsr01vm.zicher.lab. root.zicher.lab. 2020052901 3600 1800 604800 86400

;; Query time: 0 msec
;; SERVER: 192.168.1.101#53(192.168.1.101)
;; WHEN: nie maj 31 16:41:53 CEST 2020
;; MSG SIZE rcvd: 153