The reason why I noticed was that telegraf was reporting context related issues even with selinux disabled. That’s when I noticed all of the debugging lines in dmesg as well as debug mode enabled in /proc/cmdline. On Feb 28, 2017, 10:49 AM -0500, Valeri Galtsev <galtsev at kicp.uchicago.edu>, wrote: > > On Tue, February 28, 2017 9:22 am, Rob DeSanno wrote: > > Last time I saw it, I had just upgraded my CentOS 7 box with the > > 3.10.0-514 kernel and it rebooted already configured into debug mode. Not > > sure if this is a “feature†of the newer kernels or not but glad to > > see that i’m not the only one who had noticed this. > > > > # awk -F\' '$1=="menuentry " {print i++ " : " $2}' /etc/grub2.cfg > > 0 : CentOS Linux (3.10.0-514.6.2.el7.x86_64) 7 (Core) > > 1 : CentOS Linux (3.10.0-514.6.2.el7.x86_64) 7 (Core) with debugging > > 2 : CentOS Linux (0-rescue-7b37bcbe36eb420fb6426976c41b0aaf) 7 (Core) > > 3 : CentOS Linux (0-rescue-7b37bcbe36eb420fb6426976c41b0aaf) 7 (Core) with > > debugging > > I am not certain if there is real harm to have kernel with all debug stuff > running on production machines. Probably no harm security wise, the only > unpleasant stuff is: you really would prefer to run as slim kernel as > possible on production systems. If I'm wrong about "no harm", somebody > chime in, I then will be really eager to address it on my boxes. > > Valeri > > > > > On Feb 27, 2017, 8:40 PM -0500, Chris Adams <linux at cmadams.net>, wrote: > > > Once upon a time, Thomas Eriksson <thomas.eriksson at 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. > > > -- > > > Chris Adams <linux at cmadams.net > > > _______________________________________________ > > > CentOS mailing list > > > CentOS at centos.org > > > https://lists.centos.org/mailman/listinfo/centos > > _______________________________________________ > > CentOS mailing list > > CentOS at centos.org > > https://lists.centos.org/mailman/listinfo/centos > > > > > ++++++++++++++++++++++++++++++++++++++++ > Valeri Galtsev > Sr System Administrator > Department of Astronomy and Astrophysics > Kavli Institute for Cosmological Physics > University of Chicago > Phone: 773-702-4247 > ++++++++++++++++++++++++++++++++++++++++ > _______________________________________________ > CentOS mailing list > CentOS at centos.org > https://lists.centos.org/mailman/listinfo/centos