Centos7搭建KVM虚拟化环境

骑猪看日落 2023-06-15 07:26 17阅读 0赞

**如果觉得写得不错，烦请微信搜索公众号 "郑州行疆户外" 了解程序员的户外业余喜好。**

![2020102921582474.jpg][]

# 1. 查看系统版本 #

\[root@openstack ~\]\# cat /etc/centos-release

CentOS Linux release 7.4.1708 (Core)

# **2.** **首先验证****CPU****是否支持虚拟化** #

\[root@openstack ~\]\# cat /proc/cpuinfo | egrep 'vmx|svm'

# 3. 查看是否加载KVM #

\[root@openstack ~\]\# lsmod | grep kvm

kvm\_intel 170086 0

kvm 566340 1 kvm\_intel

irqbypass 13503 1 kvm

这表明已经加载，如果没有加载则执行以下命令加载KVM

\[root@openstack ~\]\# modprobe kvm

# 4. 关闭selinux #

\[root@openstack ~\]\# setenforce 0

\[root@openstack ~\]\# vim /etc/sysconfig/selinux

SELINUX=disabled

# **5.** 安装KVM相关软件包 #

\[root@openstack ~\]\# yum install qemu-kvm qemu-img virt-manager libvirt libvirt-python virt- manager libvirt-client virt-install virt-viewer -y

# 6. 启动libvirt并设置开机自启动 #

\[root@openstack ~\]\# systemctl start libvirtd

\[root@openstack ~\]\# systemctl enable libvirtd

# 7. 实施SR-IOV功能，添加intel\_iommu=on #

\[root@localhost ~\]\# vim /etc/**default**/grub

GRUB\_TIMEOUT=5

GRUB\_DISTRIBUTOR="$(sed 's, release .\*$,,g' /etc/system-release)"

GRUB\_DEFAULT=saved

GRUB\_DISABLE\_SUBMENU=**true**

GRUB\_TERMINAL\_OUTPUT="console"

GRUB\_CMDLINE\_LINUX="crashkernel=auto rd.lvm.lv=centos/root rd.lvm.lv=centos/swap rhgb quiet intel\_iommu=on"

GRUB\_DISABLE\_RECOVERY="true"

\[root@localhost ~\]\# grub2-mkconfig -o /boot/grub2/grub.cfg

# 8. 安装虚拟机  #

新建两个目录：

\[root@openstack ~\]\# mkdir /home/iso

\[root@openstack ~\]\# mkdir /home/images

## **1****） 进入图形化** ##

\[root@openstack ~\]\# virt-manager

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2hwdTEx_size_16_color_FFFFFF_t_70][]

## **2****）本地安装介质** ##

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2hwdTEx_size_16_color_FFFFFF_t_70 1][]

## **3****）选择浏览** ##

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2hwdTEx_size_16_color_FFFFFF_t_70 2][]

## **4****）这里我们选择左下角的加号来新建一个存储池（不创建也可以，这样会安装到****默认的位置，我这里的默认位置磁盘空间不够，因此新建一个存放位置）** ##

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2hwdTEx_size_16_color_FFFFFF_t_70 3][]

## **5****）创建存储池，名称随便起** ##

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2hwdTEx_size_16_color_FFFFFF_t_70 4][]

## **6****）目标路径就是前面创建的目录** ##

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2hwdTEx_size_16_color_FFFFFF_t_70 5][]

## **7****）创建好后，会出现在上面，点击它，然后点击加号，在****images****存储池里创建****一个存储卷** ##

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2hwdTEx_size_16_color_FFFFFF_t_70 6][]

## **8****）名称随便起，我这里的空间大，就给了****100G** ##

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2hwdTEx_size_16_color_FFFFFF_t_70 7][]

## **9****）点击选择卷** ##

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2hwdTEx_size_16_color_FFFFFF_t_70 8][]

## **10****）找到****/home/iso****目录下的****iso****文件** ##

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2hwdTEx_size_16_color_FFFFFF_t_70 9][]

## **11****）这里选择自定义存储，就是我们在****images****存储池里创建的存储卷** ##

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2hwdTEx_size_16_color_FFFFFF_t_70 10][]

## **12****）点击前进，然后点击完成，开始进入虚拟机系统安装** ##

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2hwdTEx_size_16_color_FFFFFF_t_70 11][]

**如果觉得写得不错，烦请微信搜索公众号 "郑州行疆户外" 了解程序员的户外业余喜好。**

![2020102921582474.jpg][]

[2020102921582474.jpg]: https://img-blog.csdnimg.cn/2020102921582474.jpg
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