Steini Petur

Well-Known Member
Apr 24, 2016
54
11
58
Iceland
cPanel Access Level
Root Administrator
Hello,

Strange thing happened, I had a VPS which had

dns1 = .185
dns2 = .186

No need to give to much information, but They responded perfectly, yes they are on the same VPS cPanel for DNS.

I moved
/etc/named.conf
/var/named/

over to a new DEDICATED SERVER

I then Arped the IP's .185 and .186 over to the server and everything was working great after a serial update, and reload. However randomly out of the blue .185 decides to become lame?

Why would it become lame? I have made sure Basic setup has the nameservers, there are zones for dns1 dns2 and they are all proper, why would only 1 of them decide to become lame? When I dig

Code:
--
[[email protected] etc]# dig @dns1.123.net 123.com

; <<>> DiG 9.8.2rc1-RedHat-9.8.2-0.37.rc1.el6_7.7 <<>> @dns1.123website.com 123.net
; (1 server found)
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 22020
;; flags: qr aa rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 2, ADDITIONAL: 2

;; QUESTION SECTION:
;123.net.               IN      A

;; ANSWER SECTION:
123.net.        14400   IN      A       1.2.3.4

;; AUTHORITY SECTION:
123.net.        86400   IN      NS      dns2.123.com
123.net.        86400   IN      NS      dns1.123.com

;; ADDITIONAL SECTION:
dns1.123.com. 14400   IN      A       1.2.3.4
dns2.123.com. 14400   IN      A       1.2.3.4

;; Query time: 0 msec
;; SERVER: 1.2.3.4#53(1.2.3.4)
;; WHEN: Mon May  2 02:48:21 2016
;; MSG SIZE  rcvd: 136

--
Yes Im aware I gave my IP but I just need assistance and trust in the cP community to assist here :)
 
Last edited by a moderator:

Steini Petur

Well-Known Member
Apr 24, 2016
54
11
58
Iceland
cPanel Access Level
Root Administrator
UPDATE: Right now, I am suspicious that this is my ddos mitigation 3rd party causing this issue, I don't seem to be able to see the dns1 properly from outside meaning I can ping it but If i run things like dns-record-viewer.online-domain-tools.com/ It pretty much tells us it wont respond.
 
Last edited by a moderator:

cPanelMichael

Administrator
Staff member
Apr 11, 2011
47,909
2,229
463
Confirmed, This was the doing of our Staminus DDOS Mitigation system... Closing the ticket..
Hello,

I'm happy to see you were able to determine the cause of the problem. Thank you for updating us with the outcome.