1、桥接网络-bridge

语雀内容

2、NAT网络

2.1、kvm 默认的网络模式

配置文件:/etc/libvirt/qemu/networks/default.xml

  1. <network>
  2.   <name>default</name>
  3.   <uuid>0d5ad6d1-0150-4bef-bd82-9589d62e841f</uuid>
  4.   <forward mode='nat'/>
  5.   <bridge name='virbr0' stp='on' delay='0'/>
  6.   <mac address='52:54:00:83:fe:35'/>
  7.   <ip address='192.168.124.1' netmask='255.255.255.0'>
  8.     <dhcp>
  9.       <range start='192.168.124.2' end='192.168.124.254'/>
  10.     </dhcp>
  11.   </ip>
  12. </network>
  1. #virsh
  2. virsh # net-dumpxml default
  3. 也可以查看网络的配置信息

2.2、创建nat网络

cp /etc/libvirt/qemu/networks/default.xml /etc/libvirt/qemu/networks/nat1.xml

  1. <network>
  2.   <name>nat1</name>   #名字修改
  3.   <uuid>0d5ad6d1-0150-4bef-bd83-9589d62e841f</uuid>  #id需唯一
  4.   <forward mode='nat'/> 
  5.   <bridge name='virbr1' stp='on' delay='0'/>  #名字修改
  6.   <mac address='52:54:00:86:fe:35'/>   #只能修改后三位，保证唯一
  7.   <ip address='192.168.120.1' netmask='255.255.255.0'>  #修改
  8.     <dhcp>
  9.       <range start='192.168.120.2' end='192.168.120.254'/>  #修改
  10.     </dhcp>
  11.   </ip>
  12. </network>
  1. systemctl restart libvirtd

2.3、激活

  1. virsh # net-list  #查看网络接口列表

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3、隔离网络-isolated

3.1、创建隔离网络

cp /etc/libvirt/qemu/networks/default.xml /etc/libvirt/qemu/networks/isolated200.xml

  1. <network>
  2.   <name>isolated200</name>
  3.   <uuid>0d5ad6d1-0130-4bef-bd82-9589d62e841f</uuid>
  4.   <bridge name='virbr2' stp='on' delay='0'/>
  5.   <mac address='52:54:00:82:fe:35'/>
  6.   <ip address='192.168.200.1' netmask='255.255.255.0'>
  7.     <dhcp>
  8.       <range start='192.168.200.2' end='192.168.200.254'/>
  9.     </dhcp>
  10.   </ip>
  11. </network>
  1. systemctl restart libvirtd

3.2、激活网卡

  1. #激活网卡
  2. virsh net-start isolated200
  3. #自动启动
  4. virsh net-autostart isolated200
  5. #查看虚拟的网卡
  6. virsh domiflist centos7.0

image.png