I'm running a CentOS 7 Virtual machine and it's picking up the DNS nameservers from my Fedora 27 system via DHCP I believe. I am trying to change the DNS nameserver in /etc/resolv.conf
to google name servers. It's different on my fedora 27, when I do that and do systemctl restart network
it goes back to the same nameservers on the fedora 27.
Is there a way to override that?
I believe I have to do something in /etc/sysconfig/network-scripts/
I am connected via ethernet enp0s3
on the vm and of course bridged on virbr0
Best Answer
The network interface of the VM is configured to accept DNS from
dhcp
only. Change the interface settings.Network interface configuration files are in
/etc/sysconfig/network-scripts/
.Say it's a kvm vps and the network interface is eth0. Edit the file
/etc/sysconfig/network-scripts/ifconfig-eth0
and add the following for Google's IPv4 nameserverThen restart networking as follows
You may use any other nameserver.
The above mentioned nameservers will be added in
resolve.conf
andPEERDNS=no
directive will stopdhcp
from altering nameserver.Another way out is making
resolv.conf
read only even for root as followsIf you want to edit the file latter use
chattr -i /etc/resolv.conf
before editing.P.S.
PEERDNS=no
works only with RHEL based system including RHEL, CentOS and Fedora.