1. Install the required packages

Ensure you update the packages database before installing the package, then call zypper to install it:

# zypper refresh
# zypper install  yast2-online-update-configuration

2. Start the configuration tool

If you are running openSUSE on a GUI, YaST2 counts with the same module. Otherwise, run the following command to use the CLI tool:

yast2 online_update_configuration

3. Configure online updates

Enable the following settings:

    Automatic Online Update
    Interval: Daily

    Skip Interactive Patches
    Agree with Licenses
    Use delta rpms

Confirm that you have checked the three options above, select OK, and exit.

The official openSUSE documentation can be found here.