Fedora 19 VM: enable serial console for virsh console

small tips.

on the Fedora 19 VM ( not a KVM host )

add consle=ttyS0,115200 in /etc/sysconfig/grub file and then update grub.cfg

# cat /etc/sysconfig/grub GRUB_TIMEOUT=5 GRUB_DISTRIBUTOR="$(sed 's, release .*$,,g' /etc/system-release)" GRUB_DEFAULT=saved GRUB_DISABLE_SUBMENU=true GRUB_TERMINAL_OUTPUT="console" GRUB_CMDLINE_LINUX="rd.lvm.lv=fedora/swap rd.md=0 rd.dm=0 vconsole.keymap=us $([ -x /usr/sbin/rhcrashkernel-param ] && /usr/sbin/rhcrashkernel-param || :) rd.luks=0 vconsole.font=latarcyrheb-sun16 rd.lvm.lv=fedora/root rhgb quiet console=ttyS0,115200" GRUB_DISABLE_RECOVERY="true" # grub2-mkconfig > /boot/grub2/grub.cfg Generating grub.cfg ... Found linux image: /boot/vmlinuz-3.11.1-200.fc19.x86_64 Found initrd image: /boot/initramfs-3.11.1-200.fc19.x86_64.img Found linux image: /boot/vmlinuz-3.10.7-200.fc19.x86_64 Found initrd image: /boot/initramfs-3.10.7-200.fc19.x86_64.img Found linux image: /boot/vmlinuz-3.9.5-301.fc19.x86_64 Found initrd image: /boot/initramfs-3.9.5-301.fc19.x86_64.img Found linux image: /boot/vmlinuz-0-rescue-f3c8f32e33ea5b487a97554afaf10441 Found initrd image: /boot/initramfs-0-rescue-f3c8f32e33ea5b487a97554afaf10441.img done

on the Feroa19 VM, add “ttyS0” in /etc/securetty file.

# echo ttyS0 >> /etc/securetty

reboot the VM. You will connect to the Fedora 19 VM over virsh console.

on the VM

# reboot

on the KVM host, connect to the VM over virsh console.

[root@localhost ~]# virsh console f19-vm1 ドメイン f19-vm1 に接続しました エスケープ文字は ^] です [    0.022000] Failed to access perfctr msr (MSR c0010001 is ffffffffffffffff) [  OK  ] Started Show Plymouth Boot Screen. [  OK  ] Reached target Paths. [  OK  ] Reached target Basic System. <snip>

Please confirm the VM has a serial port.

[root@localhost ~]# virsh dumpxml f19-vm1 | grep serial    <controller type='virtio-serial' index='0'>      <alias name='virtio-serial0'/>    <serial type='pty'>      <alias name='serial0'/>    </serial>      <target type='serial' port='0'/>      <alias name='serial0'/>      <address type='virtio-serial' controller='0' bus='0' port='1'/>