KVM learning resources

KVM Learning resources

video ：

Mr. Chen ：
https://www.bilibili.com/video/BV1AT4y1J7T6 《 introduction 》
https://www.bilibili.com/video/BV1S7411871J 《 Advanced 》

article ：

It's kind of a KVM series , Yes KVM Many contents of .
http://www.21yunwei.com/archives/1758 and http://www.21yunwei.com/archives/1758《KVM Virtualization tutorial 》
http://www.361way.com/kvm-qcow2-preallocation-metadata/3354.html 《kvm Virtualization summary （ Nine ）virt-install And qcow2 preallocation》
https://blog.51cto.com/koumm/1288795 《kvm Virtual learning notes ( One ) And kvm Virtualization environment installation 》

Record the problems encountered during ：

One 、 Modify the name of the virtual machine

# You need to shut down the virtual machine to execute the following instructions , Change the name 
virsh domrename CentOS7_mini CentOS7_mini_148

Two 、 After modification /etc/securetty , After restart centos7 The machine keeps flashing - Number ？

Reference article ：VIRSH CONSOLE Get into CENTOS 7 The virtual machine is stuck http://blog.ljmict.com/?p=89

systemctl enable [email protected]
systemctl start [email protected]

echo "ttyS0" >> /etc/securetty
grubby --update-kernel=ALL --args="console=ttyS0"
reboot

Restart after the above instructions , The machine keeps flashing - Number .

At first, I thought that the instruction just now caused the system problem .

In the end emergency mode see journalctl -xb It's the log that knows , In the afternoon /etc/fstab The contents of the document are wrong . This makes it impossible to restart the system （ In my impression, there is a video about this phenomenon ）, I'm really drunk .