[Solved] How to list which DNS I am using?

Question

Edit, solution to find which DNS you are using.  Install:
sudo pacman -S dnsutils
To get the "dig" command.  Then use it:
dig http://www.google.ca
And at the bottom of the output you will see
SERVER:
Which is immediately followed by the DNS you are using.
Thank you x33a.
Original post:
I'm trying to use Google DNS which are 8.8.8.8, and 8.8.4.4.  I have a pure systemd installation and have the dhcpcd service unit active:
[email protected] loaded active running dhcpcd on eth0
In my /etc/dhcpcd.conf file I have the following:
# A sample configuration for dhcpcd.
# See dhcpcd.conf(5) for details.
# Inform the DHCP server of our hostname for DDNS.
hostname
# To share the DHCP lease across OSX and Windows a ClientID is needed.
# Enabling this may get a different lease than the kernel DHCP client.
# Some upstream DHCP servers may also require a ClientID, such as FRITZ!Box.
#clientid
# A list of options to request from the DHCP server.
#option domain_name_servers, domain_name, domain_search, host_name
option domain_name, domain_search, host_name
option classless_static_routes
nooption domain_name_servers
# Most distributions have NTP support.
option ntp_servers
# Respect the network MTU.
option interface_mtu
# A ServerID is required by RFC2131.
require dhcp_server_identifier
# A hook script is provided to lookup the hostname if not set by the DHCP
# server, but it should not be run by default.
nohook resolv.conf
nohook lookup-hostname
noipv4ll
With the only changes being "nooption domain_name_servers" and "nohook resolv.conf".
Then in my /etc/resolv.conf I have the nameservers:
# Generated by dhcpcd from eth0
# /etc/resolv.conf.head can replace this line
nameserver 8.8.8.8
nameserver 8.8.4.4
#nameserver 192.168.0.1
# /etc/resolv.conf.tail can replace this line
/etc/resolv.conf has had "chattr +i" done to it to make it immutable from changes.
I think I have it all set-up correctly, as in it all works, but I do not know of an explicit command to tell me exactly which DNS I am using.
Last edited by headkase (2012-10-13 14:53:54)

Answer 1

I switched my nameservers over to OpenDNS: http://www.opendns.com/
Because they have a test page: http://www.opendns.com/welcome/
And I got a successful result.  So, to change that all I modified were the nameserver numbers in "/etc/resolv.conf".  So, I assume that I configured "/etc/dhcpcd.conf" correctly.  With the OpenDNS nameservers those now come up as prepopulated in namebench too.  Thanks again, solved.