[Galaxy Kirin V10] [server] KVM create Bridge

1、 precondition ： Install Kirin V10 Server operating system 、 install kvm、 stay kvm Create a good Kirin V10 The system's virtual machine

      Experimental environment ： The host machine ： kirin V10  0711  x86_64         ip：192.168.1.11

                        virtual machine ：kvm + kirin V10 0711 x86_64    ip：192.168.1.110

2、 Host configuration

# yum install bridge-utils  -y      // install bridge-utils software package , It provides brctl Tools to configure the bridge

Check tun and bridge Whether the module is loaded

# lsmod | grep tun

# lsmod | grep bridge      

establish brdige

# brctl addbr br0

# brctl addif br0 ens33        //ens33 Actually prepare the network card name for bridging for the host , Modify according to the actual name   # brctl show br0

 # brctl stp br0 on

# brctl show br0

# ifconfig ens33

#  ifconfig br0

 # ifconfig enp3s0 0 up

# ifconfig br0 up

# dhclient br0

# ifconfig  br0

 # ifconfig  ens33

  here , As a vassal of the bridge excuse （slave）, Physical network port ens33  The interface does not have its own IP Address , The bridge is parasitic on it .

  Open the virtual machine configuration details , On the network card xml In the configuration file, the configuration is changed to bridge,（ notes ： If xml You can't edit , You can open it in preferences according to the prompt xml Editing authority ）

Before change ：

After the change ：

And change the mode to bridge ：

If this option is not shown in the figure above, you can choose to specify a shared device , as follows ：

Start the virtual machine after configuration

3、 Virtual machine configuration

Start virtual machine , Then fix the virtual machine configuration ip,ip Address and host ens33 ip Same as segment , Gateway and host ens33 Same gateway , Then restart the virtual machine ens33 The Internet

# vim /etc/sysconfig/network-scripts/ifcfg-ens3

# systemctl  stop  network

# systemctl restart NetworkManager

The host machine Virtual machine connectivity test ：

4、 If the host computer and virtual machine network are not connected, check whether the virtual network card of the host computer is in the physical machine br0 On , as follows ：

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