创建网桥

一、CentOS

1、安装网桥相关依赖

yum -y install tunctl bridge-utils

2、创建网桥配置文件

cat <<EOF > /etc/sysconfig/network-scripts/ifcfg-br0
TYPE=Bridge
DEVICE=br0
ONBOOT=yes
BOOTPROTO=static
IPADDR=192.168.0.10
NETMASK=255.255.255.0
GATEWAY=192.168.0.1
DNS1=114.114.114.114
EOF

3、修改原有网卡配置文件

cat <<EOF > /etc/sysconfig/network-scripts/ifcfg-eth0
TYPE=Ethernet
DEVICE=eth0
ONBOOT=yes
BRIDGE=br0           
EOF

4、重启网络

systemctl restart network

5、网桥显示

brctl show

二、Ubuntu

1、安装依赖

apt -y install tunctl bridge-utils

2、配置

vim /etc/netplan/00-installer-config.yaml
# This is the network config written by 'subiquity'
network:
  ethernets:
    eno1:
      dhcp4: no
      dhcp6: no
      #      addresses:
      #      - 192.168.0.241/24
      #      gateway4: 192.168.0.1
      #      nameservers:
      #        addresses:
      #        - 114.114.114.114
    eno2:
      dhcp4: no
      dhcp6: no
  version: 2
  bridges:
    br0:
      interfaces: [eno1]
      addresses: [192.168.0.241/24]
      gateway4: 192.168.0.1
      nameservers:
        addresses: [114.114.114.114]

3、应用

netplan apply

4、查看状态

networkctl status br0