[Solved] Howto change DNS servers?

[grasshopper]

Hi,

When i check my DNS servers using:

Code: Select all

nmcli dev show |grep DNS

I get this result:

Code: Select all

IP4.DNS[1]:                             185.228.168.10

I tried with the instructions given on this website to change the DNS but it does not work.
Apparently i have changed the write permissions to read to a particular configuration file or something...

Can anyone guide me to the solution?

[Flemur]

They seemed to have made it difficult to change without using a GUI, contrary to basic linux philosophy.

From your WiFi/connection icon on the task bar (add it if it's not there) -> Configure -> select your connection -> ipv4 tab -> set the "Method" as shown in the pic below (with cursor), enter your DNS values, hit Save. Mine was set to something goofy, I just now did the above and now I have

Code: Select all

$ nmcli dev show |grep DNS
IP4.DNS[1]:                             1.1.1.1
IP4.DNS[2]:                             8.8.8.8

[grasshopper]

Ok, I will try that later (I am typing this from a computer on my work) but it's actually not the answer I seek.
I simply just want to know how this DNS setting can be deleted....

---

Ok , I figured it out.

With this command you set a dns server:

Code: Select all

nmcli con mod <Connection name> ipv4.dns "185.228.168.168,185.228.168.169"

With this command you can see the details about the connection:

Code: Select all

nmcli -p con show <Connection name>

or briefly the DNS address:

Code: Select all

nmcli dev show| grep DNS

Then deactivate the connection and activate the connection:

Code: Select all

nmcli con down <Connection name>

Code: Select all

nmcli con up <Connection name>

(Source)

---

However: how can you make this DNS-Server permanent or read-only?
Install the resolvconf package:

Code: Select all

sudo apt-get install resolvconf

Edit /etc/resolvconf/resolv.conf.d/head and add the following:

# Make edits to /etc/resolvconf/resolv.conf.d/head.
nameserver 185.228.168.168
nameserver 185.228.168.169

Restart the resolvconf service.

Code: Select all

sudo systemctl start resolvconf.service

Check this service:

Code: Select all

sudo systemctl status resolvconf.service

And last but not least open Nemo as administrator and set /etc/resolvconf/resolv.conf.d/head as readonly to protect from overwriting.