启动第一个 KVM 虚机

红太狼 2022-06-16 04:16 198阅读 0赞

![upload-ueditor-image-20160307-1457304718715003747.jpg][]

本节演示如何使用 virt-manager 启动 KVM 虚机。

首先通过命令 virt-manager 启动图形界面

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   <td><code># virt-manager</code></td> 
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![upload-ueditor-image-20160307-1457304718954070405.jpg][]

点上面的图标创建虚机

![upload-ueditor-image-20160307-1457304719096052736.jpg][]

给虚机命名为 kvm1，这里选择从哪里启动虚机。如果是安装新的 OS，可以选择第一项。如果已经有安装好的镜像文件，选最后一项（如上图）

接下来需要告诉 virt-manager 镜像的位置。

![upload-ueditor-image-20160307-1457304719284067208.jpg][]

点击 “Browser”

![upload-ueditor-image-20160307-1457304719417023312.jpg][]

在我的系统中存放了一个 cirros-0.3.3-x86\_64-disk.img 镜像文件 。cirros 是一个很小的 linux 镜像，非常适合测试用，大家可以到 [ http://download.cirros-cloud.net/][http_download.cirros-cloud.net] 下载，然后放到 /var/lib/libvirt/images/ 目录下，这是 KVM 默认查找镜像文件的地方。

![upload-ueditor-image-20160307-1457304719548026046.jpg][]

为虚拟机分配 CPU 和内存

![upload-ueditor-image-20160307-1457304719741020819.jpg][]

点击 “Forward”， 再确认一下信息，就可以启动虚机了。

![upload-ueditor-image-20160307-1457304719929070271.jpg][]

virt-manager 会打开虚机 kvm1 的控制台窗口，可以看到启动情况

![upload-ueditor-image-20160307-1457304720129005307.jpg][]

virt-manager 可以对虚机进行各种管理操作，界面直观友好，很容易上手。 同时我们也可以用命令 virsh 管理虚机，比如查看宿主机上的虚机

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      1 
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     <code>root@ubuntu:~</code> 
     <code># virsh list</code> 
    </div> 
    <div> 
     <code>Id&nbsp;&nbsp;&nbsp; Name&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; State</code> 
    </div> 
    <div> 
     <code>--------------------------------</code> 
    </div> 
    <div> 
     <code>8&nbsp;&nbsp;&nbsp;&nbsp; kvm1&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; running</code> 
    </div> </td> 
  </tr> 
 </tbody> 
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至此，第一个虚机已经跑起来了，采用的都是默认设置，后面我们会逐步讨论有关虚机更细节的内容，比如存储和网卡的设置。

![upload-ueditor-image-20160307-1457304720271060997.png][]

[upload-ueditor-image-20160307-1457304718715003747.jpg]: http://7xo6kd.com1.z0.glb.clouddn.com/upload-ueditor-image-20160307-1457304718715003747.jpg
[upload-ueditor-image-20160307-1457304718954070405.jpg]: http://7xo6kd.com1.z0.glb.clouddn.com/upload-ueditor-image-20160307-1457304718954070405.jpg
[upload-ueditor-image-20160307-1457304719096052736.jpg]: http://7xo6kd.com1.z0.glb.clouddn.com/upload-ueditor-image-20160307-1457304719096052736.jpg
[upload-ueditor-image-20160307-1457304719284067208.jpg]: http://7xo6kd.com1.z0.glb.clouddn.com/upload-ueditor-image-20160307-1457304719284067208.jpg
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[http_download.cirros-cloud.net]: http://download.cirros-cloud.net/
[upload-ueditor-image-20160307-1457304719548026046.jpg]: http://7xo6kd.com1.z0.glb.clouddn.com/upload-ueditor-image-20160307-1457304719548026046.jpg
[upload-ueditor-image-20160307-1457304719741020819.jpg]: http://7xo6kd.com1.z0.glb.clouddn.com/upload-ueditor-image-20160307-1457304719741020819.jpg
[upload-ueditor-image-20160307-1457304719929070271.jpg]: http://7xo6kd.com1.z0.glb.clouddn.com/upload-ueditor-image-20160307-1457304719929070271.jpg
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