[CentOS] CentOS 7 kernel console under KVM?

[Paul Heinlein]

On Wed, 8 Oct 2014, Nux! wrote:

> For my templates I use:
> grubby --update-kernel=ALL --args="crashkernel=0 at 0 video=1024x768 console=ttyS0,115200n8 console=tty0 consoleblank=0"

In kickstart files for CentOS 7 VMs that run in what I still think of 
as runlevel 3, I use a somewhat simpler recipe:

bootloader --location=mbr --append="console=ttyS0"

On the VM, that translates into /etc/default/grub looking something 
like this:

GRUB_TIMEOUT=5
GRUB_DISTRIBUTOR="$(sed 's, release .*$,,g' /etc/system-release)"
GRUB_DEFAULT=saved
GRUB_DISABLE_SUBMENU=true
GRUB_TERMINAL="serial console"
GRUB_SERIAL_COMMAND="serial"
GRUB_CMDLINE_LINUX="rd.lvm.lv=vg0/vmroot console=ttyS0 crashkernel=auto  vconsole.font=latarcyrheb-sun16 vconsole.keymap=us"
GRUB_DISABLE_RECOVERY="true"


When the VM boots, it's then easy to run "virsh console YOURVM" to 
attach to the serial console.

-- 
Paul Heinlein
heinlein at madboa.com
45°38' N, 122°6' W