Prepare the environment
1. Turn on the virtualization Intel VT-x/EPT or AMD-V/RVI(V) option in the processor
2. Start the virtual machine and check whether the machine supports KVM
3. Turn off the firewall
[root@localhost ~]# systemctl stop firewalld
[root@localhost ~]# setenforce 0
[root@localhost ~]#
4. Install and start kvm
[root@localhost ~]# yum install -y qemu-kvm libvirt virt-install bridge-utils
[root@localhost ~]# systemctl start libvirtd
[root@localhost ~]# systemctl enable libvirtd
5. Create view storage file
[root@localhost ~]# qemu-img create -f raw /opt/CentOS-7-x86_64.raw 10G
Formatting '/opt/CentOS-7-x86_64.raw', fmt=raw size=10737418240
[root@localhost ~]# ls -l /opt/CentOS-7-x86_64.raw
-rw-r--r--. 1 root root 10737418240 10月 30 13:59 /opt/CentOS-7-x86_64.raw
6. Upload image
[root@localhost ~]# mv CentOS-7-x86_64-Minimal-2003.iso /tmp/
[root@localhost ~]# ls /tmp/
CentOS-7-x86_64-Minimal-2003.iso
7. Create a physical bridge bridge interface br0
[root@localhost ~]# virsh iface-bridge ens33 br0
[root@localhost ~]# systemctl restart network
Use your physical network card ens33 as the switch, use br0 as the network card, provide IP, and restart the network service
Note: The command may freeze or make an error, and the terminal will be forced to exit; wait a while, restart the network card, and it will be OK after logging in
8. Install the virtual machine
virt-install --virt-type kvm --name CentOS-7-x86_64 --ram 1536 --cdrom=/tmp/CentOS-7-x86_64-Minimal-2003.iso --disk path=/opt/CentOS-7-x86_64.raw --network bridge=br0 --graphics vnc,listen=0.0.0.0 --noautoconsole
9. Connect using VNC
10. Start the installation
11. Don't panic when it will exit after restart
12. View the startup on the virtual machine