Once upon a time, Thomas Eriksson thomas.eriksson@slac.stanford.edu said:
I noticed that some, but not all, of my CentOS 7 machines have these kernel parameters for turning on systemd debug level logging added to the grub.cfg file.
Yep, for each of the installed kernels, I have two GRUB entries: one with and one without debugging. It seems that when I install a new kernel, the debugging entry gets the "default" choice.
I don't know what's adding them though.