新版centos修改网卡IP

新版的centos修改了网卡配置的方法，下面是新的配置方法：

方法1
1.查看当前连接名称：

nmcli connection show

输出示例：

NAME                UUID                                  TYPE      DEVICE
Wired connection 1  12345678-1234-1234-1234-123456789abc  ethernet  eth0

2.修改 IP 地址（假设连接名为 Wired connection 1，网卡为 eth0）：

sudo nmcli connection modify "Wired connection 1" ipv4.addresses 192.168.1.100/24
sudo nmcli connection modify "Wired connection 1" ipv4.gateway 192.168.1.1
sudo nmcli connection modify "Wired connection 1" ipv4.dns "8.8.8.8 8.8.4.4"
sudo nmcli connection modify "Wired connection 1" ipv4.method manual

3.重启连接：

sudo nmcli connection down "Wired connection 1"
sudo nmcli connection up "Wired connection 1"

方法2
1.编辑网卡配置文件（假设网卡名为 eth0）：

sudo vi /etc/sysconfig/network-scripts/ifcfg-eth0

2.修改或添加以下内容：

BOOTPROTO=static
ONBOOT=yes
IPADDR=192.168.1.100
NETMASK=255.255.255.0
GATEWAY=192.168.1.1
DNS1=8.8.8.8
DNS2=8.8.4.4

3.重启网络服务：

sudo systemctl restart network