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Linux修改网卡为固定IP

需要net-tools/netplan
  • RHEL
  • Diban
    Migrate to Debian before Ubuntu 20.04 ends support (April, 2025).

RHEL-like

  • Alma/Rocky
  • CentOS
    Less than RHEL version 8

View

net adapter list:

$cd /etc/sysconfig/network-scripts
$ls ifcfg-* -l

ipv4

$ip addr

ipv6

$ip -6 addr

Setup

Start job network adapter:

ONBOOT=yes

static

$cd /etc/sysconfig/network-scripts
$sudo vi ifcfg-enp0s3

BOOTPROTO=none
IPADDR=192.168.1.186
PREFIX=24
GATEWAY=192.168.1.1
DNS1=211.161.191.235
DNS2=211.161.122.197

IPv6 Network

  • IPV6INIT=yes
    This initializes the interface for IPv6 addressing.
  • IPV6_AUTOCONF=yes
    This enables the IPv6 auto-configuration for the interface.
  • IPV6_DEFROUTE=yes
    This indicates that the default IPv6 route has been assigned to the interface.
  • IPV6_FAILURE_FATAL=no
    indicates that the system won’t fail even when IPv6 fails.

virtual machine

设置Network Adapter为Bridged

net adapter

  • vmware
    default: eth0

  • vbox
    default: enp0s3

Debian-like

Debian:

sudo apt install netplan.io

Ubuntu

$cd /etc/netplan/
$sudo vi 00-installer-config.yaml
  • Normal

路由器下

#This is the network config written by 'subiquity'
network:
  ethernets:
    enp0s3:
      dhcp4: no
      addresses:
        - 192.168.0.55/24
      gateway4: 192.168.0.1
      nameservers:
              addresses: [192.168.0.1, 192.168.1.1]
  version: 2

nameserver

在热点下

  • nameserver 1
    设置Host的IP
  • nameserver 2
    设置Host的DNS

for example:

# This is the network config written by 'subiquity'
network:
  ethernets:
    ens32:
      #dhcp4: true
      dhcp4: no
      addresses:
        - 192.168.69.119/24
      gateway4: 192.168.69.113
      nameservers:
        addresses: [192.168.69.113, 192.168.69.218]
  version: 2

宿主机的IP: 192.168.69.113

宿主机的DNS: 192.168.69.218

Ref