# grubby --default-kernel
/boot/vmlinuz-5.15.0-310.184.5.2.el9uek.x86_64
# grubby --info=ALL | grep ^kernel
kernel="/boot/vmlinuz-5.15.0-310.184.5.2.el9uek.x86_64"
kernel="/boot/vmlinuz-5.15.0-302.167.6.el9uek.x86_64"
kernel="/boot/vmlinuz-5.14.0-570.30.1.0.1.el9_6.x86_64"
kernel="/boot/vmlinuz-5.14.0-503.11.1.el9_5.x86_64"
kernel="/boot/vmlinuz-0-rescue-dfbeda345e8248dda7782b18ad072ff3"
# grubby --set-default
/boot/vmlinuz-5.14.0-570.30.1.0.1.el9_6.x86_64
The default is /boot/loader/entries/dfbeda345e8248dda7782b18ad072ff3-5.14.0-570.30.1.0.1.el9_6.x86_64.conf with index 2 and kernel /boot/vmlinuz-5.14.0-570.30.1.0.1.el9_6.x86_64