ubuntu各版本修改网卡配置

关于我从liunx到ubuntu一路摸索过来总结的一些知识..

17.10以前版本

文件路径：/etc/sysconfig/network-scripts/ifcfg-eth0(你的网卡)，设置网卡IP地址(也可以配置网关和DNS)

 # 静态分配的配置方法：
 # This file describes the network interfaces available on your system
 # and how to activate them. For more information, see interfaces(5).
 
 # The loopback network interface
 auto lo
 iface lo inet loopback
 
 # The primary network interface
 auto ens33
 iface ens33 inet static
 address 192.168.1.8     # IP地址
 netmask 255.255.255.0   # 子网掩码
 gateway 192.168.1.1     # 网关
 broadcast 192.168.1.255 # 广播地址 在IP中，如果最后一改数字时255,那一定是广播地址(可忽略)
  
  # 修改网卡的硬件地址：
 ifconfig ens33 hw ether 00:0c:29:f0:cf:f9 #(可忽略)

DEVICE="eth0"
TYPE=Ethernet
BOOTPROTO=static
HWADDR=00:0C:29:4C:84:AB
IPADDR=192.168.1.8
NETMASK=255.255.255.0
GATEWAY=192.168.1.1
DEFROUTE="yes"
IPV4_FAILURE_FATAL="yes"
IPV6INIT=no
NAME="System eth0"
NM_CONTROLLED=yes
ONBOOT=yes
PEERDNS=yes
PEERROUTES="yes"
UUID="5fb06bd0-0bb0-7ffb-45f1-d6edd65f3e03"
USERCTL=no
DNS1=202.106.0.20
DNS2=192.168.1.1

(2)/etc/sysconfig/network，设置网关

NETWORKING=yes
HOSTNAME=localhost.localdomain
GATEWAY=192.168.1.1

(3)/etc/resolv.conf，设置DNS

nameserver=202.106.0.20
nameserver=192.168.1.1
search localdomain

修改网络配置 17.10以后版本

文件路径：/etc/netplan/00-installer-config.yaml

可以多种格式配置

# This is the network config written by 'subiquity'
network:
  ethernets:
    ens33:     #配置的网卡的名称
      addresses: [192.168.31.215/24]    #配置的静态ip地址和掩码
      dhcp4: no    #关闭DHCP，如果需要打开DHCP则写yes
      optional: true
      gateway4: 192.168.31.1    #网关地址
      nameservers:
         addresses: [192.168.31.1,114.114.114.114]    #DNS服务器地址，多个DNS服务器地址需要用英文逗号分隔开
  version: 2
  renderer: networkd    #指定后端采用systemd-networkd或者Network Manager，可不填写则默认使用systemd-workd
   routes: #默认路由 自己设置
             - to: 172.18.0.0/16
               via: 172.18.105.1

# This is the network config written by 'subiquity'
 network:
      version: 2
      ethernets:
              ens33:   #网卡名称
                  dhcp4: no
                  addresses: 
                          - 192.168.1.12/24      #ip
                  optional: true
                  gateway4: 192.168.1.1         #网关
                  nameservers:
                          addresses:
                                  - 114.114.114.114  #dns1
                                  - 255.255.255.255   #dns2
              ens38:
                  dhcp4: no
                  addresses: [192.168.11.13/24]
                  optional: true
                  gateway4: 192.168.1.1
                  nameservers:
                          addresses:
                                 - 114.114.114.114         
                                 - 255.255.255.255