Hi Alberto, Thanks for replying so quickly. I really appreciate being able to use dnss. In Canada, our domain registrar (CIRA.CA) also provides safe and secure DNS resolution services including DOH and dnss is the perfect open-source solution.
I think that the dnss setup is more easily configured using the /lib/systemd files than using /etc/default/dnss for specifying everything; as mentioned, I made changes to all 3 files. I don't understand why /lib/systemd are not considered configuration files - perhaps this is the real bug. In any case, I always run "apt upgrade" manually because I always want to see and evaluate any configuration files changes. I did not see the usual configuration file changes prompts from apt (dpkg) when dnss was updated. Unfortunately, dpkg.log does not include such details. However, /var/log/apt/term.log does and there is no record of any such prompting about /etc/default/dnss for this update: Preparing to unpack .../dnss_0.0~git20200927.0.6aad832e-1+b1_amd64.deb ... Unpacking dnss (0.0~git20200927.0.6aad832e-1+b1) ... Setting up dnss (0.0~git20200927.0.6aad832e-1+b1) ... Created symlink /etc/systemd/system/multi-user.target.wants/dnss.service → /lib/systemd/system/dnss.service. Created symlink /etc/systemd/system/sockets.target.wants/dnss.socket → /lib/systemd/system/dnss.socket. Job failed. See "journalctl -xe" for details. A dependency job for dnss.service failed. See 'journalctl -xe' for details. I don't think I have any configuration issues with apt. As mentioned, I am used to being prompted about configuration file changes. I have included the details as requested in the attached file apt-config.dump.out.txt. Thank you for your work on the dnss package. I hope that you find my experience useful to your work. Best regards, - Steve Ellis <b...@mbse.ca> On Mon, 5 Apr 2021 10:04:16 +0100 Alberto Bertogli <albert...@blitiri.com.ar> wrote: > On Sun, Apr 04, 2021 at 06:45:09PM -0700, se wrote: > > * What led up to the situation? > >- running "apt upgrade" > > > > * What exactly did you do (or not do) that was effective (or > > ineffective)? > >- had to restore all 3 confuration files from backup: > > /etc/default/dnss > > /lib/systemd/system/dnss.socket > > /lib/systemd/system/dnss.service > > > > * What was the outcome of this action? > >- restoring from backup and re-enabling and re-starting dnss > >restored function > > > > * What outcome did you expect instead? > >- asking about modified configuratiuon files before overwriting them. > >- not breaking DNS resolution. > > Hi, thanks for reporting this, and sorry you run into this! > > The dnss package uses the standard Debian way of packaging > configuration files, so the behaviour should match what you see in > other packages. > > - /etc/default/dnss appears in conffiles, which is what tells apt > that it is a configuration file that *shouldn't* be overwritten if > the user has made changes, and you should get asked what to do > (see [1] and [2]). > > - The /lib/systemd/ files do not appear in conffiles and *will* get > overwritten. I think that's expected, since for overriding systemd > configuration the expectation is that you do it in /etc/systemd/ > (see [3]). I'm not saying I love it, but it's how systemd > configuration file layout is designed to work. I'm sorry that you > had to restore these from backups, but this will happen with _any_ > package, it was probably just bad luck that you saw it with dnss. > > So, /lib/systemd/ files being silently overwritten is working as > intended (as unfortunate as that is), but /etc/default/dnss should > not be automatically overwritten under normal conditions. > > > Was this an unattended upgrade? If so, do you have a log of the > upgrade? Like /var/log/unattended-upgrades/unattended-upgrades.log and > /var/log/unattended-upgrades/unattended-upgrades-dpkg.log. > > Do you have any special apt configuration that might be behind this? > An "apt-config dump" should show the full apt configuration, it might > be useful to include it as well. > > Thanks again, > Alberto > > [1]: https://www.debian.org/doc/debian-policy/ch-files.html#behavior > [2]: https://www.debian.org/doc/debian-policy/ap-pkg-conffiles.html > [3]: https://wiki.debian.org/systemd#Creating_or_altering_services >
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