部暑

环境：

    系统：CentOS7.5

查看有没开启虚拟化：

egrep --color '(vmx|svm)' /proc/cpuinfo
vmx是Intel，svm是AMD

有以下三个参数：

[root@TEST22 ~]# lsmod | grep kvm
kvm_intel             183621  3 
kvm                   586948  1 kvm_intel
irqbypass              13503  4 kvm

安装：

#用来管理kvm
yum install qemu-kvm qemu-kvm-tools -y

#用来创建虚拟机
yum install virt-install.noarch virt-manager python-virtinst -y

#用来管理虚拟机
yum install libvirt libvirt-python -y

启动：

systemctl start libvirtd.service

systemctl enable libvirtd.service

升级qemu:

git clone git://git.qemu.org/qemu.git
cd qemu
git submodule init
git submodule update --recursive
./configure
#./configure时可能遇到如下错误：ERROR: glib-2.22 gthread-2.0 is required to compile QEMU
#解决：yum install gtk2-devel -y
make
make install

ln -s /usr/local/bin/qemu-system-x86_64 /usr/libexec/qemu-kvm
ln -s /usr/local/bin/qemu-system-x86_64 /usr/bin/qemu-kvm
ln -s /usr/local/bin/qemu-system-x86_64 /usr/bin/qemu-img