KVM 虚拟化技术（四）之 命令行方式通过VNC安装虚拟机

配置 vnc

vim /etc/libvirt/qemu.conf

去掉下面的注释

vnc_listen = "0.0.0.0"

创建虚拟机

virt-install --name=vm1 --ram=1024 --vcpus=2 --disk path=/home/kvm/images/vm1.img,size=10 --cdrom /dev/cdrom --graphics vnc,password=123456,port=5910, --network bridge=br0,model=virtio --force --autostart

表示创建一个名称为vm1的虚拟机，其内存为1024M，分配2核CPU,磁盘位置在/home/kvm/images/vm1.img，size=10是磁盘大小，然后指定cdrom位置，配置图形安装，使用vnc，vnc连接密码是123456 ，端口是5910 网络使用桥接方式，创建完立即启动。

[root@kvm ~]#  virt-install --name=vm1 --ram=1024 --vcpus=2 --disk path=/home/kvm/images/vm1.img,size=10 --cdrom /dev/cdrom --graphics vnc,password=123456,port=5910, --network bridge=br0,model=virtio --force --autostart
WARNING  The requested volume capacity will exceed the available pool space when the volume is fully allocated. (10240 M requested capacity > 5270 M available)
WARNING  The requested volume capacity will exceed the available pool space when the volume is fully allocated. (10240 M requested capacity > 5270 M available)
WARNING  The requested volume capacity will exceed the available pool space when the volume is fully allocated. (10240 M requested capacity > 5270 M available)
WARNING  The requested volume capacity will exceed the available pool space when the volume is fully allocated. (10240 M requested capacity > 5270 M available)
WARNING  The requested volume capacity will exceed the available pool space when the volume is fully allocated. (10240 M requested capacity > 5270 M available)
WARNING  The requested volume capacity will exceed the available pool space when the volume is fully allocated. (10240 M requested capacity > 5270 M available)
WARNING  The requested volume capacity will exceed the available pool space when the volume is fully allocated. (10240 M requested capacity > 5270 M available)
WARNING  The requested volume capacity will exceed the available pool space when the volume is fully allocated. (10240 M requested capacity > 5270 M available)
WARNING  The requested volume capacity will exceed the available pool space when the volume is fully allocated. (10240 M requested capacity > 5270 M available)

Starting install...
WARNING  The requested volume capacity will exceed the available pool space when the volume is fully allocated. (10240 M requested capacity > 5270 M available)
Allocating 'vm1.img'                                                                   |  10 GB     00:00     
Creating domain...                                                                     |    0 B     00:00     
Cannot open display: 
Run 'virt-viewer --help' to see a full list of available command line options
Domain installation still in progress. You can reconnect to 
the console to complete the installation process.

通过vnc连接

我们可以在Chrome商店，安装vnc扩展程序，然后连接

安装的话正常安装就可以

附，创建一个 kvm 格式的虚拟机

virt-install  \
       --hvm   \
       --name=centos7 \
       --ram=1024 \
       --vcpus=1 \
       --cdrom=/opt/ios/CentOS-7-x86_64-Minimal-1611.iso \
       --virt-type=kvm \
       --disk path=/home/kvm/images/vm-centos-7.img,size=20 \
       --network network=default \
       --network bridge=br0,model=virtio \
       --accelerate \
       --graphics vnc,port=5950,password=123456 \
       --force \
       --autostart