Fedora Silverblue: not only for your grandma
I have migrated my grandparents to Fedora Silverblue, previously they used CentOS. I was impressed how everything worked well and I like where Fedora is going overall. Less pre-installed software, I am hoping for more packages to be dropped - Evolution backend, on-line accounts, Maps and others. Overall, it works great.
Setting up Fedora Silverblue was easy, installation smooth. Then I had to ensure screen does not lock (they hate this):
gsettings set org.gnome.desktop.screensaver lock-enabled false
Timezone was not right, I had to misclick during installation:
timedatectl set-timezone Europe/Prague
I have found out that the default policy is not to automaticaly update OS without askint, what I want is auto updating without any question because they would never confirm it:
grep Update /etc/rpm-ostreed.conf AutomaticUpdatePolicy=stage
This configuration should stage updates for automatic installation (I mean boot). This finishes the configuration:
rpm-ostree reload systemctl enable rpm-ostreed-automatic.timer --now
Now, I want to access those workstation via ssh, but my parents are stuck behind home firewalls. I came up with a solution - reverse ssh tunelling. I enabled ssh, generated keys and connected to my server:
systemctl enable --now sshd ssh-keygen ssh email@example.com
A new user service will be started to create the tunnel:
mkdir -p ~/.config/systemd/user
I am forwarding both ports 22 and 5900:
cat ~/.config/systemd/user/reverse-ssh.service [Unit] Description=Reverse SSH connection After=network.target [Service] Type=simple ExecStart=/usr/bin/ssh -g -N -T -o "ServerAliveInterval 10" -o "ExitOnForwardFailure yes" -R 40122:localhost:22 -R 40159:localhost:5900 firstname.lastname@example.org Restart=always RestartSec=10m [Install] WantedBy=default.target
To enable the service:
systemctl --user daemon-reload systemctl --user enable --now reverse-ssh
Unfortunately, I was not able to get VNC running. After I enabled Remote Desktop in Gnome, I could not find any VNC client that would work. The best I could achieve was a frozen screen when connected on my LAN. Maybe I will find one later on, there are some developments in Fedora 35.
That should do it, ideal OS for elders - no reboots into dnf, no viruses, just internet and a printer. Upgrading to major Fedora releases should be also easy and I can do it via ssh:
ostree remote refs fedora rpm-ostree rebase fedora:fedora/XX/x86_64/silverblue
To revert to the previus version, simply pick the previous boot entry and
rpm-ostree rollback. Which reminds me - Fedora 35 is out, I should
probably upgrade them now.