server-doc/automatic-updates.md

fedora automatic security updates

sudo dnf install dnf-automatic

in /etc/dnf/automatic.conf

[commands]
upgrade_type = security
download_updates = yes
apply_updates = yes
reboot = never

sudo systemctl enable --now dnf-automatic.timer

change auto-update schedule

in /usr/lib/systemd/system/dnf-automatic-install.timer

[Unit]
Description=dnf-automatic-install timer
# See comment in dnf-makecache.service
ConditionPathExists=!/run/ostree-booted
Wants=network-online.target

[Timer]
######################## LINE BELOW IS SCHEDULE
OnCalendar=*-*-* 1:30  # everyday at 1:30 am
########################
RandomizedDelaySec=60m # randomized between 1:30 and 2:30
Persistent=true

[Install]
WantedBy=timers.target

check timers

systemctl list-timers	# all timers
systemctl cat dnf-automatic-install.timer	# only auto-update timer