Virsh console connection failure

 virsh console You can simulate logging in to the virtual machine locally , But you need to configure relevant parameters on the connected virtual machine , Otherwise, you will not be able to use this function .

[[email protected] ~]$ sudo virsh console ct7_node02
Connected to domain ct7_node02
Escape character is ^]

As shown above , Always card owner , Unable to enter user name and password .

resolvent

stay grub.cfg Add console=ttyS0,115200n8 As shown in the figure below

[[email protected]_node02 grub2]# cat grub.cfg 
...
	linux16 /vmlinuz-3.10.0-514.el7.x86_64 root=/dev/mapper/cl-root console=ttyS0,115200n8
	initrd16 /initramfs-3.10.0-514.el7.x86_64.img
...

verification

[[email protected] ~]$ sudo virsh console ct7_node02
Connected to domain ct7_node02
Escape character is ^]

CentOS Linux 7 (Core)
Kernel 3.10.0-514.el7.x86_64 on an x86_64

ct7_node02 login: root
Password: 
Last login: Thu Jul 28 19:52:12 on ttyS0
[[email protected]_node02 ~]#