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CentOS8 で virsh console を設定する

Last updated at Posted at 2020-03-21

1. /etc/default/grub の編集

/etc/default/grubGRUB_CMDLINE_LINUX=行の最後にconsole=tty0 console=ttyS0,115200n8を追加する。

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="crashkernel=auto resume=/dev/mapper/cl-swap rd.lvm.lv=cl/root rd.lvm.lv=cl/swap rhgb quiet console=tty0 console=ttyS0,115200n8"
GRUB_DISABLE_RECOVERY="true"
GRUB_ENABLE_BLSCFG=true

2. grub.cfg を再生成する

$ sudo grub2-mkconfig -o /boot/grub2/grub.cfg

3. 仮想マシンを再起動させる

4. 早速、virsh consoleを使ってみる

$ virsh console <ホスト名>

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