基本概念

Driver capabilities XML format

  1. virsh # capabilities
  2. <capabilities>
  4.   <host>
  5.     <cpu>
  6.       <arch>i686</arch>
  7.       <model>n270</model>
  8.       <topology sockets='1' cores='2' threads='1'/>
  9.       <feature name='lahf_lm'/>
  10.       <feature name='lm'/>
  11.       <feature name='xtpr'/>
  12.       <feature name='cx16'/>
  13.       <feature name='tm2'/>
  14.       <feature name='est'/>
  15.       <feature name='vmx'/>
  16.       <feature name='ds_cpl'/>
  17.       <feature name='pbe'/>
  18.       <feature name='tm'/>
  19.       <feature name='ht'/>
  20.       <feature name='ss'/>
  21.       <feature name='acpi'/>
  22.       <feature name='ds'/>
  23.       <feature name='pse36'/>
  24.     </cpu>
  25.     <migration_features>
  26.       <live/>
  27.       <uri_transports>
  28.         <uri_transport>tcp</uri_transport>
  29.       </uri_transports>
  30.     </migration_features>
  31.     <secmodel>
  32.       <model>apparmor</model>
  33.       <doi></doi>
  34.     </secmodel>
  35.   </host>
  37.   <guest>
  38.     <os_type>hvm</os_type>
  39.     <arch name='i686'>
  40.       <wordsize>32</wordsize>
  41.       <emulator>/usr/bin/qemu</emulator>
  42.       <machine>pc-0.12</machine>
  43.       <machine canonical='pc-0.12'>pc</machine>
  44.       <machine>pc-0.11</machine>
  45.       <machine>pc-0.10</machine>
  46.       <machine>isapc</machine>
  47.       <domain type='qemu'>
  48.       </domain>
  49.       <domain type='kvm'>
  50.         <emulator>/usr/bin/kvm</emulator>
  51.         <machine>pc-0.12</machine>
  52.         <machine canonical='pc-0.12'>pc</machine>
  53.         <machine>pc-0.11</machine>
  54.         <machine>pc-0.10</machine>
  55.         <machine>isapc</machine>
  56.       </domain>
  57.     </arch>
  58.     <features>
  59.       <cpuselection/>
  60.       <pae/>
  61.       <nonpae/>
  62.       <acpi default='on' toggle='yes'/>
  63.       <apic default='on' toggle='no'/>
  64.     </features>
  65.   </guest>
  67.   <guest>
  68.     <os_type>hvm</os_type>
  69.     <arch name='x86_64'>
  70.       <wordsize>64</wordsize>
  71.       <emulator>/usr/bin/qemu-system-x86_64</emulator>
  72.       <machine>pc-0.12</machine>
  73.       <machine canonical='pc-0.12'>pc</machine>
  74.       <machine>pc-0.11</machine>
  75.       <machine>pc-0.10</machine>
  76.       <machine>isapc</machine>
  77.       <domain type='qemu'>
  78.       </domain>
  79.     </arch>
  80.     <features>
  81.       <cpuselection/>
  82.       <acpi default='on' toggle='yes'/>
  83.       <apic default='on' toggle='no'/>
  84.     </features>
  85.   </guest>
  87. </capabilities>

存储管理

http://libvirt.org/formatstorage.html

  • pool: 存储介质池，可选的 type 值包括：dir, fs, netfs, disk, iscsi, logical
    1. <pool type="iscsi">
    2.       <name>virtimages</name>
    3.       <uuid>3e3fce45-4f53-4fa7-bb32-11f34168b82b</uuid>
    4.       <allocation>10000000</allocation>
    5.       <capacity>50000000</capacity>
    6.       <available>40000000</available>
    7.       ...
  • volume: 文件或硬件设备提供的存储介质。
    1. <volume>
    2.       <name>sparse.img</name>
    3.       <key>/var/lib/xen/images/sparse.img</key>
    4.       <allocation>0</allocation>
    5.       <capacity unit="T">1</capacity>
    6.       ...

虚拟网络

网络模式

  • NAT 模式
  • 路由模式
  • 隔离模式
  • 支持 IPv6 网络的隔离模式
  • 使用物理主机的桥接网卡
  • 使用 macvtap 的直连模式

参考文献

防火墙

guest os 的 vnc 配置

示例 1：

  1. <graphics type='vnc' port='-1' autoport='yes' listen='10.6.9.142' passwd='your_password_here' sharePolicy='allow-exclusive'>
  2.     <listen type='address' address='10.6.9.142'/>
  3. </graphics>

返回顶部
https://huangwei.me/wiki/tech_cloud_libvirt.html