Centos what is my dns server

Asked 9 years, 10 months ago. Active 4 months ago. Viewed k times. Improve this question. Braiam 33k 23 23 gold badges silver badges bronze badges. Grzenio Grzenio 5, 11 11 gold badges 31 31 silver badges 41 41 bronze badges. The Linux kernel itself is not aware about DNS services. To answer it's better to know your userland. What distribution are you using?

Add a comment. Active Oldest Votes. Improve this answer. Lonnie Best Lonnie Best 4, 4 4 gold badges 18 18 silver badges 31 31 bronze badges. On Debian this requires the network-manager package.

I've updated the answer to reflect what's working for me in Show 7 more comments. In that case, things depend on what you're using. This file typically points at And if you have several upstream server configured?

How to know which one is currently used? I would suggest to mention that file is a link and dynamically generated for systems using resovconf like Ubuntu. I've seen this answer millions of times and until today is that I think it is correct, because I understand now that it is actually a dynamically generated file. See the answers by G32RW or Lonniebiz for a more robust approach under various circumstances, e.

Show 3 more comments. On systems running systemd use: systemd-resolve --status Or: resolvectl. Brian Topping 4 4 bronze badges. DNS Domain Name System is a fundamental facilitator of several networking technologies such as mail servers, Internet browsing, and streaming services e.

Netflix and Spotify , among others. It works on a special computer called a DNS server — which keeps a database record of several public IP addresses along with their corresponding hostnames in order for it to resolve or translate hostnames to IP addresses upon user request. This happens so that we would not need to bother ourselves with remembering the IP addresses of the different websites we visit.

While there are several things we can discuss on DNS servers such as redirection and malware attack prevention, our focus today is on how to find out your very own dns server IP address.

Another way is to use the following grep command. Here, nameserver Easy right? TecMint is the fastest growing and most trusted community site for any kind of Linux Articles, Guides and Books on the web. This can be combined with other options:. To look up multiple entries, start by creating a file to store the domain names:. Save the file and exit. Now, specify the file using the -f option in the dig command:. Any other option can be used instead.

Open the file for editing with the following command:. Write the file ctrl — o and exit ctrl — x. You should now be familiar with the dig command in Linux.

This command can help you find more information about Domain Nameservers. However, from svr1 svr2 svr3, I can't ssh out to the host name. I can ssh out to the fqdn or the ip. Not the host name. I've tried shutting off the selinux. To rule it out. Didn't help. I've tried the firewall.

What should I be looking at next? Minor code may provide more information Cannot determine realm for numeric host address debug1: Unspecified GSS failure.

Minor code may provide more information debug1: Unspecified GSS failure.