On Sun, Oct 13, 2024 at 12:07 AM home user via users
<[email protected]> wrote:
>
> On 10/12/24 7:31 PM, Samuel Sieb wrote:
> > On 10/12/24 6:13 PM, Jeffrey Walton wrote:
> >> I would definitely consider some post-upgrade clean-ups as detailed in
> >> <https://docs.fedoraproject.org/en-US/quick-docs/upgrading-fedora-offline/#sect-optional-post-upgrade-tasks>.
> >>
> >> At minimum, there are some old packages and a lot of dangling symlinks
> >> that should be cleaned up.
> >
> > I have never done any of that on any systems I manage...
> > I sometimes need to add "--allowerasing" when I do upgrades because of 
> > packages that I've installed a long time ago, but that doesn't concern me.  
> > I've never had any issues caused by dangling symlinks.
> >
>
> With past upgrades, I've done some of the post-upgrade tasks.
> - I had trouble early on with updating configuration files.  Ed suggested I 
> could skip it,  I've skipped that step ever since.
> - This upgrade was the first in which I had trouble with the clean-up retired 
> packages step.  It crashed, and I remain suspicious it caused the trouble 
> addressed by this thread.  I'm doubtful about doing this step in the future.
> - I've been skipping the clean-up old kernels step.
> - This is the first I've seen the clean-up old keys trusted for RPM package 
> signing step.  Has anyone had trouble with this?  How risky is it?
> - I've had no trouble with clean-up old symlinks, but I vaguely recall 
> someone in this list in some past thread warning about this step being a 
> little risky.
> - For space reasons, I no longer have a rescue kernel.
> - Curious: I have not yet for this upgrade relabelled files with the latest 
> SELinux policy, yet I'm seeing no problems relating to SELinux.
>
> I hope to try some of the post-upgrade tasks Monday.  But I'll skip some 
> altogether.

Regarding "... updating configuration files.  Ed suggested I could
skip it, I've skipped that step ever since" : you might consider
switching to the new(ish) pattern of putting your configuration
changes in the <package>.d/ directory so you don't have to mess with
the package's conf file. Then you don't have problems when it comes
time to take the package maintainer's version of a conf file.

As an example, here are my three for SSH. The big thing to notice is,
they are no longer added/modified in sshd_config, so there's never a
conflict when it comes time to upgrade the package.

   # cat /etc/ssh/sshd_config.d/10-no_password.conf
   # Disable passwords
   PasswordAuthentication no
   ChallengeResponseAuthentication no
   KerberosAuthentication no
   KerberosOrLocalPasswd no
   GSSAPIAuthentication no
   UsePAM no

   # cat /etc/ssh/sshd_config.d/15-pubkey_auth.conf
   # Enable public key
   PubkeyAuthentication yes

   # cat /etc/ssh/sshd_config.d/20-no_root_login.conf
   PermitRootLogin no

Jeff
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