KVM virtualization

One 、 Deploy kvm Environmental Science

[[email protected] ~]# yum grouplist
[[email protected] ~]# yum groupinstall "Server with GUI"
[[email protected] ~]# systemctl get-default
[[email protected] ~]# systemctl set-default
[[email protected] ~]# systemctl set-default graphical.target
[[email protected] ~]# yum -y install xorg-x11-font-utils
[[email protected] ~]# reboot
[[email protected] ~]# lsmod | grep kvm
[[email protected] ~]# modprobe kvm_intel
[[email protected] ~]# yum install qemu-kvm qemu-img libvirt
[[email protected] ~]# nmcli connection modify ens160 ipv4.dns 192.168.235.140
[[email protected] ~]# nmcli connection up ens160
[[email protected] ~]# nmcli device show | grep DNS
[[email protected] ~]# ip a
[[email protected] ~]# systemctl start libvirtd
[[email protected] ~]# systemctl status libvirtd
[[email protected] ~]# virsh net-list

Two 、 Configure bridge network

# You can use this method 
[[email protected] ~]# nm-connection-editor

Click here ：

complete ：

3、 ... and 、 Separate use virt-manager and virt-install Create a virtual machine

3.1 Use virt-manager Create a virtual machine

Type in terminal virt-manager, It will pop up

storage Choose default

Click on finish Finish creating

3.2 Use virt-install Create a virtual machine

[[email protected] ~]# virt-install --name=centos7 --memory 512,maxmemory=1024 --vcpus 1,maxvcpus=4 --os-type=linux --cdrom=/iso/CentOS-7-x86_64-Minimal-2009.iso --disk path=/var/lib/libvirt/images/centos7u6.img,size=5,format=qcow2 --network bridge=virbr0 --autostart

After installation, click reboot restart ：

Four 、 Add a piece to the virtual machine 2G disk

Change the bridge mode used by the virtual machine network ：

5、 ... and 、 Create a snapshot of the virtual machine in shutdown state

vm1 snapshot

centos7 The same is true of snapshots .