Re: f32 upgrade breaks mdns/avahi

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On 2020-03-08 17:58, Chris Murphy wrote:
> Hi,
>
> $ ssh chris@fnuc.local
>
> Works on F31. Fails on F32 *upgrade*. Works on F32 clean.
>
> Best I can tell is something is modifying /etc/nsswitch.conf during the upgrade.
>
> Before dnf system-upgrade (and clean)
> hosts:      files mdns4_minimal [NOTFOUND=return] dns myhostname
>
> After dnf system-upgrade (only):
> hosts:      files dns myhostname
>
> If I restore this, and restart avahi-daemon.service, the ssh command
> works again.
>
> Dunno a good way to find out what touches this file in offline upgrade
> mode. Maybe if I chattr +i then whatever tries to modify it will fail
> and complain into the journal? Or maybe auditd is running in offline
> updates?
>
>

FWIW, I have not yet performed an upgrade from F31 to F32.  However, I would like to note
that on an install of F32 from Fedora-KDE-Live-x86_64-32-20200228.n.0.iso and subsequent
updates I have

[egreshko@f32k2 etc]$ ll nsswitch.conf*
lrwxrwxrwx. 1 root root   29 Mar  7 15:17 nsswitch.conf -> /etc/authselect/nsswitch.conf
-rw-r--r--. 1 root root 2215 Feb 28 19:41 nsswitch.conf.bak

and nsswitch.conf.bak does contain

hosts:      files dns myhostname



-- 
The key to getting good answers is to ask good questions.
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