sukmoonlee_1219
Jun 16, 2016Nimbostratus
BIP-IP DNS setting issue?
our dns server is not resolver a special domain 'www.airport.kr'
Below our dns server have a ns record 'a.www.airport.kr'. but not resolve a 'a.www.airport.kr'.
$ dig @dns www.airport.kr
; <<>> DiG 9.9.4-RedHat-9.9.4-18.el7 <<>> @dns221 www.airport.kr
; (1 server found)
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: SERVFAIL, id: 32462
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 0, ADDITIONAL: 1
;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 4096
;; QUESTION SECTION:
;www.airport.kr. IN A
;; Query time: 12 msec
;; SERVER:
;; WHEN: 목 6월 16 18:34:03 KST 2016
;; MSG SIZE rcvd: 43
$ dig @dns www.airport.kr +norecurse
; <<>> DiG 9.9.4-RedHat-9.9.4-18.el7 <<>> @dns221 www.airport.kr +norecurse
; (1 server found)
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 28683
;; flags: qr ra; QUERY: 1, ANSWER: 0, AUTHORITY: 2, ADDITIONAL: 3
;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 4096
;; QUESTION SECTION:
;www.airport.kr. IN A
;; AUTHORITY SECTION:
www.airport.kr. 967 IN NS a.www.airport.kr.
www.airport.kr. 967 IN NS b.www.airport.kr.
;; ADDITIONAL SECTION:
a.www.airport.kr. 791 IN A 222.122.66.147
b.www.airport.kr. 791 IN A 222.122.66.179
;; Query time: 0 msec
;; SERVER:
;; WHEN: 목 6월 16 18:34:07 KST 2016
;; MSG SIZE rcvd: 107
Generally big-ip dns is not have set a ns record?? (222.122.66.179 server is not have a.www.airport.kr record.)
[root@smlee:/root] $ dig @b.dns.kr www.airport.kr +norecurse
; <<>> DiG 9.8.2rc1-RedHat-9.8.2-0.47.rc1.el6 <<>> @b.dns.kr www.airport.kr +norecurse
; (1 server found)
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 48175
;; flags: qr; QUERY: 1, ANSWER: 0, AUTHORITY: 2, ADDITIONAL: 0
;; QUESTION SECTION:
;www.airport.kr. IN A
;; AUTHORITY SECTION:
airport.kr. 86400 IN NS ns20.airport.or.kr.
airport.kr. 86400 IN NS ns10.airport.or.kr.
;; Query time: 8 msec
;; SERVER: 61.74.75.153(61.74.75.1)
;; WHEN: Thu Jun 16 18:49:31 2016
;; MSG SIZE rcvd: 81
[root@smlee:/root] $ dig @ns10.airport.or.kr www.airport.kr +norecurse
; <<>> DiG 9.8.2rc1-RedHat-9.8.2-0.47.rc1.el6 <<>> @ns10.airport.or.kr www.airport.kr +norecurse
; (1 server found)
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 33732
;; flags: qr ra; QUERY: 1, ANSWER: 0, AUTHORITY: 2, ADDITIONAL: 2
;; QUESTION SECTION:
;www.airport.kr. IN A
;; AUTHORITY SECTION:
www.airport.kr. 1800 IN NS a.www.airport.kr.
www.airport.kr. 1800 IN NS b.www.airport.kr.
;; ADDITIONAL SECTION:
b.www.airport.kr. 1270 IN A 222.122.66.179
a.www.airport.kr. 1519 IN A 222.122.66.147
;; Query time: 9 msec
;; SERVER: 116.84.243.2053(116.84.243.20)
;; WHEN: Thu Jun 16 18:49:41 2016
;; MSG SIZE rcvd: 96
[root@smlee:/root] $ dig @222.122.66.179 www.airport.kr
; <<>> DiG 9.8.2rc1-RedHat-9.8.2-0.47.rc1.el6 <<>> @222.122.66.179 www.airport.kr
; (1 server found)
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 8873
;; flags: qr aa rd; QUERY: 1, ANSWER: 1, AUTHORITY: 1, ADDITIONAL: 0
;; WARNING: recursion requested but not available
;; QUESTION SECTION:
;www.airport.kr. IN A
;; ANSWER SECTION:
www.airport.kr. 30 IN A 116.84.243.135
;; AUTHORITY SECTION:
airport.kr. 500 IN NS B-GTM.BIGIP.COM.
;; Query time: 12 msec
;; SERVER: 222.122.66.17953(222.122.66.179)
;; WHEN: Thu Jun 16 18:49:57 2016
;; MSG SIZE rcvd: 77
[root@smlee:/root] $ dig @222.122.66.179 a.www.airport.kr
; <<>> DiG 9.8.2rc1-RedHat-9.8.2-0.47.rc1.el6 <<>> @222.122.66.179 a.www.airport.kr
; (1 server found)
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 42337
;; flags: qr aa rd; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 0
;; WARNING: recursion requested but not available
;; QUESTION SECTION:
;a.www.airport.kr. IN A
;; AUTHORITY SECTION:
airport.kr. 60 IN SOA B-GTM.BIGIP.COM. hostmaster.B-GTM.BIGIP.COM. 15 10800 3600 604800 60
;; Query time: 9 msec
;; SERVER: 222.122.66.17953(222.122.66.179)
;; WHEN: Thu Jun 16 18:50:06 2016
;; MSG SIZE rcvd: 96