nmcli

[Jerry Geis]

On Fri, Feb 19, 2021 at 8:49 AM Chris Green <cl at isbd.net> wrote:

> On Fri, Feb 19, 2021 at 07:49:05AM -0500, Jerry Geis wrote:
> > On Fri, Feb 19, 2021 at 6:47 AM Tom H <tomh0665 at gmail.com> wrote:
> > >
> > > So "/etc/resolv.conf" is provided by resolved and is a symlink to
> > > "/run/systemd/resolve/stub-resolv.conf".
> > >
> > > If you really want to use "resolvconf", you have to change
> > > "/etc/resolv.conf" to be a symlink to "/run/resolvconf/resolv.conf".
> > >
> > > But I wouldn't use "resolvconf" if I were you. Ubuntu already has a
> > > more multi-layered network setup than other dostros, and adding
> > > "resolvconf" to the mix can only be a source of head-scratching. I've
> > > tested using "resolvconf" in the past and I've found that the
> > > integration with resolved isn't full. "resolvectl" lists the
> > > resolvconf nameserver for "global" and MetworkManager/networkd
> > > nameserver for "link", and, it's the "global" value that's queried
> > > when you run "dig".
> > >
> > > It looks to me that you're using "netplan" and that you should edit
> > > "/etc/netplan/<yaml>" to change NIC's setup. The "nmcli" command that
> > > you ran wrote the config to
> > > "/etc/NetworkManager/system-connections/<conn>" and, apart from the
> > > fact that the dns settings are listed in "nmcli c sh id <conn>", they
> > > aren't taken into account; and they're ignored after a reboot.
> > >
> >
> >
> > You right: netplan says use NetworkManager
> > /etc/netplan/00-installer-config.yaml
> > # This is the network config written by 'subiquity'
> > network:
> >   version: 2
> >   renderer: NetworkManager
> >
> > I removed resolvconf - but now I'm back to /etc/resolv.conf not getting
> > updated.
> > Your correct that the dns settings were saved to the /etc/NetworkManager
> > path file - but how do I get that to be part of /etc/resolv.conf ?
> >
> /etc/resolv.conf should be a symbolic link to either
> /run/systemd/resolve/stub-resolv.conf (the default) or
> /run/systemd/resolve/resolv.conf
>
> Both of these files are created at boot time by systemd.
>
> Read 'man systemd-resolved' which does explain how it works (though
> not in the easiest way to understand IMHO).
>
> --
> Chris Green
>
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Your correct the file is a symbolic link.
I am trying to use nmcli to set the DNS - but /etc/resolv.conf is not
updated.
I'm trying to find out how to update the file. It always says:

nameserver 127.0.0.53
options edns0 trust-ad

Jerry
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