How to enable auto updates on Rocky Linux 9 w/ dnf-automatic
This post will show you how to enable automatic system updates for your CentOS 9 / RHEL 9 / Rocky 9 system.
Update your system
It might be a good idea to update your system before installing something. Kind of ironic isn’t it? We’ll do it anyway.
[root@rocky ~]# yum update
Install dnf-automatic
[root@rocky ~]# yum install dnf-automatic
Configure dnf-automatic
This will enable daily updates
[root@rocky ~]# vi /etc/dnf/automatic.conf
apply_updates = yes
Set a schedule for updates
By default updates are installed once a day at 06:00 with a random delay of 60m, I suggest changing that to 04:00 with a delay of 15m
[root@rocky ~]# systemctl edit -f dnf-automatic-install.timer
# [Timer]
# OnCalendar=*-*-* 4:00
# RandomizedDelaySec=10m
# Persistent=true
Start dnf-automatic
Lastly start dnf-automatic and enable it to start automatically at boot time
[root@rocky ~]# systemctl enable dnf-automatic.timer
[root@rocky ~]# systemctl start dnf-automatic.timer