virsh console 登錄CentOS7系統

一、在kvm虛擬機中執行如下命令

systemctl start [e-mail]
systemctl enable [e-mail]

二、在KVM物理機中進行連接

[root@192-168-5-25 ~]# virsh console node-192.168.5.69-Harbor
Connected to domain node-192.168.5.69-Harbor
Escape character is ^]

CentOS Linux 7 (Core)
Kernel 3.10.0-327.el7.x86_64 on an x86_64

k8s-harbor login: root
Password: 
Last login: Thu Sep  5 15:57:10 on ttyS0
[root@k8s-harbor ~]# 

按ctrl+]退出登錄

三、連接報錯 error: operation failed: Active console session exists for this domain

[root@192-168-5-25 ~]# ps aux | grep console
root     162814  0.0  0.0 337104  6476 pts/16   Sl+  15:47   0:00 virsh console node-192.168.5.69-Harbor
root     163622  0.0  0.0 112664   968 pts/19   S+   15:56   0:00 grep --color=auto console
[root@192-168-5-25 ~]# kill -9 162814

# 刪除進程再重新登錄即可