DNS assistance please

[Speedster]

Could one of you linux superhero gurus perhaps help me out, please? I'm running a home server on Debian and since a couple of weeks ago it doesn't have a working DNS setting upon rebooting. I'm able to get things working by editing /etc/resolv.conf but this only lasts until the next reboot. I've looked all around online but can't find a solution that seems to work. Anyone know how I can fix this?

 

[Speedster]

There's no /etc/netplan/

I have /etc/netconfig/, /etc/network/, /etc/NetworkManager/ and /etc/networks/

 

[Speedster]

This is from 2015 so YMMV

What overwrites /etc/resolv.conf on every boot?

I was given the files for a mini linux, that boots directly into firefox. It works for all it should be doing, only that I do not get an internet connection. We have 3 DNS servers in the network, ...

unix.stackexchange.com

Hmm... none of those options are doing the trick

 

[SauRoNZA]

Does your /etc/resolv.conf reset?

Or are the settings just not adhered to?

Try running “chattr +i /etc/resolv.conf” after setting it up again.

 

[Speedster]

Does your /etc/resolv.conf reset?

Or are the settings just not adhered to?

Try running “chattr +i /etc/resolv.conf” after setting it up again.

It resets. After every reboot it just says: "# Generated by NetworkManager"

 

[SauRoNZA]

Then that command should lock it out.

Otherwise just do it with Networkmanager.

First prize and easiest is “nmtui” which you may need to install.

Otherwise.

nmcli con mod $connectionName ipv4.dns “$DNS1 $DNS2”

Run just “nmcli con” to get the connection name.

 

[Speedster]

I've added a file named /etc/NetworkManager/conf.d/DontTouchDNSResolution.conf with the following contents:

[main]
dns=none
systemd-resolved=false

This seems to have worked.

 

[Speedster]

Then that command should lock it out.

Otherwise just do it with Networkmanager.

First prize and easiest is “nmtui” which you may need to install.

Otherwise.

nmcli con mod $connectionName ipv4.dns “$DNS1 $DNS2”

Run just “nmcli con” to get the connection name.

nmcli was showing the correct info, it just wasn't writing to resolve.conf correctly. Anyway, they dontTouch thing seems to have done the trick

 

[r00igev@@r]

I've added a file named /etc/NetworkManager/conf.d/DontTouchDNSResolution.conf with the following contents:

[main]
dns=none
systemd-resolved=false

This seems to have worked.

Yes, best to disable systemd-resolved. Its kuk. Its one of systemd's small bad ideas.

 

[Muffin]

Another way would be to prevent any changes to /etc/resolv.conf:
# chattr +i /etc/resolv.conf

 

[Rickster]

Could one of you linux superhero gurus perhaps help me out, please? I'm running a home server on Debian and since a couple of weeks ago it doesn't have a working DNS setting upon rebooting. I'm able to get things working by editing /etc/resolv.conf but this only lasts until the next reboot. I've looked all around online but can't find a solution that seems to work. Anyone know how I can fix this?

I assume this isnt a Desktop Experience environment?

 

[Speedster]

I assume this isnt a Desktop Experience environment?

Isn't that a Windows thing?

 

[Rickster]

Isn't that a Windows thing?

I guess but it should apply to Linux too, basically im asking are you using Debian with or without a GUI.

 

[Speedster]

I guess but it should apply to Linux too, basically im asking are you using Debian with or without a GUI.

Command line all the way

 

[yogidabear]

It gets overwritten on each reboot so add to /etc/resolvconf/resolv.conf.d/head

 

[Rickster]

Command line all the way

Then why you struggling.