Linux Setup Static IP with NetworkManager解决手动设置ip无效

问题现象：手动设置静态ip地址：sudo vi /etc/network/interfaces发现dns无效，怎么配置都无法上网

问题原因：/etc/resolv.conf是旧时生成文件，重启之后失效

问题解决：使用NetworkManager设置静态ip，方法如下：

1、Check netowrk connection:

pi@Smart4418SDK:~$ sudo nmcli connection show
NAME                UUID                                  TYPE            DEVICE 
Wired connection 1  cffa785e-0425-3777-b670-092c79328a1f  802-3-ethernet  eth0

2、The above messages show that there is a wired connection named "Wired connection 1". You can set a static IP for "Wired connection 1" by running the following commands:

sudo nmcli connection modify 'Wired connection 1' connection.autoconnect yes ipv4.method manual ipv4.address 192.168.2.199/24 ipv4.gateway 192.168.2.1 ipv4.dns 192.168.2.1
sudo reboot

3、If this is successful the connection will be assigned a static IP with IP address to be 192.168.2.199 and both gateway and DNS to be 192.168.2.1

PS：the ‘/24’ represents the number of subnetwork bits active in the mask.