Thank you for the updates.
My update from 3.10.0-1127.13.1.el7 to 3.10.0-1127.19.1.el7 was uneventful, but I have Kernelcare installed and rarely do the kernel updates manually (nor reboot the server afterwards, or course) unless the kernel update is related to a zero-day security bug. Igor is usually pretty quick about patching things anyway, so it has to be a pretty extreme situation before I update the kernel manually.
I also haven’t read about any problems related to that specific upgrade.
In any event, I think it’s unlikely that Virtualmin would have anything to do with a problem that occurred during a CentOS kernel upgrade because I’m almost certain that all it does is run
You can enable syslog kernel logging in
/etc/rsyslog.conf by adding
( kern.* TAB TAB TAB /var/log/kernel.log )
In the meantime, you can try poking around in
/var/log/dmesg.old if it exists)
/var/log/boot.log (and older saved boot logs)
/var/log/yum.log (and older logs)
but it’s a crapshoot whether you’ll find anything useful.
You can get recent kernel update history with
rpm -q kernel --last
but it’s just a list.