Is there a simple command to find out which DNS server I'm using right now? Preferably without resorting to tcpdump
or parsing log files?
I found a lot of stuff about nm-cli
and other nm-tools but that doesn't apply to a server...
nslookup
can be used to get the DNS server that is being used.
Example:
$ nslookup www.google.com
Server: 10.0.0.1 <--This is the DNS server address.
Address: 10.0.0.1#53
Non-authoritative answer:
Name: www.google.com
Address: 216.58.217.36
Hope this helps!
For the majority of applications,
less /etc/resolv.conf
should work. Otherwise, you can try,
dig xxxxxxxxx
replacing xxxxxxxx with any server of your choice. You should see what nameserver was used to look it up.
N.B.: Don't be surprised if it is 127.0.0.1 : this is your localhost, which probably means it's your router that is determining your nameserver.
cat /etc/resolv.conf