DNS Not Working on Primary Server, How to connect cPanel DNS only server?

[whoisiyush]

Hello There,
I have a primary cPanel Server with IP- 1.1.1.1
and hostname and nameserver as follows:
server.example.com
ns1.example.com
ns2.example.com

Hostnames are pointing at my server i.e 1.1.1.1, but due to some issue with my isp's side, DNS is not working.

So I want to use external DNS servers from my primary cPanel Server i.e server.example.com .I read a thread about cPanel DNS Server, so will it work as my primary DNS server? after doing some config?
If yes, then please do tell me the way to do it.


Help Will Be Appreciated

 

[cPRex]

Hey there! You may find this post helpful as it sounds like it could be a similar issue:

NS not working properly in home server

Hello everyone, i have setup a home server with dedicated line for internet and leased ips. i have installed centos 7 and installed cpanel on it. The server is working fine, i have tried to ping google.com , 8.8.8.8 and a few domains they're pinging correctly. I am able to open cPanel WHM...

forums.cpanel.net

If you wanted to use an external DNS server, there is no automated way to automatically send all the DNS records over to it. You would need to manually configure the DNS records you require at the remote location.

 

[whoisiyush]

Thanks for replying.

what if i use a separate server and make it Cpanel DNS only and add it to my cluster? ,Sync all records?

 

[cPRex]

Sure - that would work very well. Details on the cluster configuration can be found here:

DNS Cluster | cPanel & WHM Documentation

This interface allows you to configure a DNS cluster and add servers to an existing DNS cluster.

docs.cpanel.net

 

[whoisiyush]

Sure - that would work very well. Details on the cluster configuration can be found here:

DNS Cluster | cPanel & WHM Documentation

This interface allows you to configure a DNS cluster and add servers to an existing DNS cluster.

docs.cpanel.net

Hey there just wanted to ask MY HOME SERVER’s dns not working at all it is not able resolve domain! so even if i add DNS ONLY server will that server my purpose?

and what ip to enter in nameservers a

like-

ns1.mydomain.com -> Home server(1.1.1.1)
ns2.mydomain.com -> Home Server (1.1.1.1)

how can i use dns only server as my primary resolving server!

 

[cPRex]

If the server isn't able to resolve a domain at all, you'll want to look at the test from my first post to see if it is a local configuration issue. It's possible your network may not support DNS queries.

 

[whoisiyush]

nmap gives this output-

root@titan ~]# nmap -sU ns1.exampledomain.com -p 53

Starting Nmap 6.40 ( Nmap: the Network Mapper - Free Security Scanner ) at 2022-06-13 17:09 EDT
Failed to resolve "ns1.trendship.in".
WARNING: No targets were specified, so 0 hosts scanned.
Nmap done: 0 IP addresses (0 hosts up) scanned in 21.19 seconds


and if i run nmap for hostname (deafult hostname cprapid one ) it gives this-

[root@titan ~]# nmap -sU 1.1.1.1.cprapid.com -p 53

Starting Nmap 6.40 ( Nmap: the Network Mapper - Free Security Scanner ) at 2022-06-13 17:12 EDT
Nmap scan report for 1.1.1.1.cprapid.com (1.1.1.1)
Host is up (0.15s latency).
PORT STATE SERVICE
53/udp open|filtered domain

Nmap done: 1 IP address (1 host up) scanned in 1.96 seconds

 

[cPRex]

Thanks for that - this would indicate that there are two issues happening - port 53 is being filtered on your network and your hostname doesn't have the proper DNS configuration for the nameservers to work. With the port 53 issue, that network is likely not a good option for hosting nameservers.

 

[whoisiyush]

should i change my isp?

and one more thing

can i use external dns server in order to fix this issue?

something like any other Cpanel dns only server hosted on Aws or any other provider that provides top notch networking?

if yes how?

and also in order to use non Cpanel Dns server how can i do that too?

Help is really appreciated

 

[cPRex]

You may be able to use a DNSOnly server and create a DNS cluster to resolve this issue. cPanel servers aren't designed to be used on private networks, as many of the common ports may not be available through your ISP. A datacenter host would have all of the ports open necessary for all tools to function.

You could use a non-cPanel DNS server as well, but you'd need to manually enter your DNS information into that server, which is more work and more possible room for error.

 

[whoisiyush]

so how to configure cpanel dns only server in order to fix this issue!

more over i’m not on private network, i got 3 static public ips, my whm is accessible all over the globe, if i manually add A record for my server’s ip and using default ns at the registrar

websites are also accessible all over the globe!

 

[cPRex]

You can read more about the cPanel DNSCluster system here:

DNS Cluster | cPanel & WHM Documentation

This interface allows you to configure a DNS cluster and add servers to an existing DNS cluster.

docs.cpanel.net

 

[whoisiyush]

Thanks For Helping me Out !
i just wanted to ask one things- pls check below config

i”m setting up ip’s ->

server.example.com -> 1.1.1.1 (Home Server)

Nameservers (Dns only cPanels)

ns1.example.com -> 2.2.2.2
ns2.example.com -> 3.3.3.3

in Basic Web Host Manager Config in Home Server


i will add my nameservers and put ipv4 addresses of the dns servers right?

ns1-> 2.2.2.2
ns2-> 3.3.3.3


is it okay?

 

[cPRex]

That all sounds fine, but it's important to note that configuring the nameservers in WHM >> Basic Web Host Manager Configuration only creates the records locally and tells cPanel to use those nameservers in future DNS zones you create. You still need to ensure the nameservers are configured in DNS and at the registrar level.