[CentOS] CentOS 7, systemd,, and message floods

Wed Apr 5 20:41:06 UTC 2017
Chris Adams <linux at cmadams.net>

Once upon a time, Brian Mathis <brian.mathis+centos at betteradmin.com> said:
> if grep -q debug /proc/cmdline; then
>     echo "Kernel and systemd debugging was enabled as part of an errant
> script during the yum update"
>     echo "See https://bugs.centos.org/view.php?id=12425 and
> https://wiki.centos.org/HowTos/Grub2"
> fi

Assuming your GRUB entries are in the usual order (newest kernel first),
you can do:

grub2-set-default "$(grep '^menuentry' /boot/grub2/grub.cfg | grep -v debug | head -n 1 | cut -d\' -f2)"

and then reboot.
Chris Adams <linux at cmadams.net>