• 安裝所需套件

yum install -y  bridge-utils\
                libvirt-python \
                libvirt-client \
                virt-install \
                virt-viewer \
                virt-manager libvirt \
                qemu-kvm qemu-img 

• vim /etc/sysconfig/selinux

SELinux=disabled

• 重新開機

reboot

• 啟動KVM

lsmod | grep kvm 
systemctl start libvirtd 
systemctl enable libvirtd