树莓派Raspberry Pi OS 设置静态IP地址
方法一（旧版本Raspberry Pi OS Debian10及以下）
编辑 /etc/network/interfaces ，修改eth0 网卡相关配置如下：
source-directory /etc/network/interfaces.d
auto lo
iface lo inet loopback
auto eth0
iface eth0 inet static
address 192.168.0.101
netmask 255.255.255.0
network 192.168.0.1
gateway 192.168.0.1
dns-nameservers 202.97.224.68202.97.224.69 #DNS 要指定，否则某些网络无法访问外网，参考https://blog.csdn.net/u013554213/article/details/78870408
方法二（新版本Raspberry Pi OS Debian11及以上）
编辑 /etc/dhcpcd.conf， 添加eth0 网卡相关配置如下：
interface eth0
static ip_address=192.168.0.103/24
static routers=192.168.0.103
注意：设置了固定固定IP后，更换路由器时，则无法连接网络，无法自动分配DHCP IP，请谨慎。此时你需要用键盘鼠标，HDMI屏幕进入修改。或者把路由器的IP设置为固定IP的同网段，才能访问。
对于Pi-Star，当连接不上指定WIFI 路由器后，会生成WiFi AP ,加入AP，再修改地址也可以的。
有线网卡：eth0
无线WIFI：wlan0，第二个WIFI： wlan1
全部参考：（Debian10为例）
# interfaces(5) file used by ifup(8) and ifdown(8)
# Please note that this file is written to be used with dhcpcd
# For static IP, consult /etc/dhcpcd.conf and 'man dhcpcd.conf'
# Include files from /etc/network/interfaces.d:
source-directory /etc/network/interfaces.d
auto lo
iface lo inet loopback
pre-up iptables-restore < /etc/iptables.rules
pre-up ip6tables-restore < /etc/ip6tables.rules
#iface eth0 inet manual #必须屏蔽掉，不然有线网卡eth0静态IP设置无效
auto eth0
iface eth0 inet static
address 192.168.2.8 #有线网卡
netmask 255.255.255.0
network 192.168.2.1
gateway 192.168.2.1 #DNS static domain_name_servers=8.8.8.8 8.8.4.4 可以改为与网关一样
auto wlan0
iface eth0 inet static
address 192.168.2.27 #WIFI0
netmask 255.255.255.0
network 192.168.2.1
gateway 192.168.2.1
auto wlan1
iface eth0 inet static
address 192.168.2.28 #USB-WIFI
netmask 255.255.255.0
network 192.168.2.1
gateway 192.168.2.1
allow-hotplug eth1
iface eth1 inet dhcp
allow-hotplug wwan0
iface wwan0 inet dhcp
allow-hotplug wlan0
iface wlan0 inet manual
wpa-conf /etc/wpa_supplicant/wpa_supplicant.conf
wireless-power off
allow-hotplug wlan1
iface wlan1 inet manual
wpa-conf /etc/wpa_supplicant/wpa_supplicant.conf
wireless-power off
iface wlan0_ap inet static
address 192.168.50.1
netmask 255.255.255.0
network 192.168.50.0
broadcast 192.168.50.255
wireless-power off
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原文：https://liujinye.gitbook.io/openshift-docs/raspberry-pi/shu-mei-pai-raspberrypios-she-zhi-jing-tai-ip