搭建了一个本地服务器，在局域网内部署了一些服务，但是路由器重启后，服务器的IP地址有时候会变，这个时候该怎么办呢，如何进行固定IP设置呢？

图形化版

图形化版类似于windows的网络设置，比较简单，此处不做描述。

Server-20版本

1. 找到yaml文件

ubuntu@ubuntu:~$ cd /etc/netplan/
ubuntu@ubuntu:/etc/netplan$ ll
total 12
drwxr-xr-x   2 root root 4096 Apr  1  2020 ./
drwxr-xr-x 100 root root 4096 May  5 01:32 ../
-rw-r--r--   1 root root  416 Apr  1  2020 50-cloud-init.yaml

2. 查看

ubuntu@ubuntu:/etc/netplan$ cat 50-cloud-init.yaml 
# This file is generated from information provided by the datasource.  Changes
# to it will not persist across an instance reboot.  To disable cloud-init's
# network configuration capabilities, write a file
# /etc/cloud/cloud.cfg.d/99-disable-network-config.cfg with the following:
# network: {config: disabled}
network:
    ethernets:
        eth0:
            dhcp4: true
            optional: true
    version: 2

3. 查看网络信息

ubuntu@ubuntu:/etc/netplan$ ifconfig
eth0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
        inet 192.168.0.xxxx  netmask 255.255.255.0  broadcast 192.168.0.255
        inet6 xxxx::xxxx:xxxx:xxxx:xxxx  prefixlen 64  scopeid 0x20<link>
        ether e4:5f:01:00:4d:49  txqueuelen 1000  (Ethernet)
        RX packets 3902  bytes 3716301 (3.7 MB)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 2633  bytes 216207 (216.2 KB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

4. 编辑

ubuntu@ubuntu:/etc/netplan$ sudo vi 50-cloud-init.yaml 

network:
    ethernets:
        eth0: # 网卡名称
            addresses: [192.168.0.101/24] # ip地址
            gateway4: 192.168.0.1	# 网关地址
            nameservers:
                    addresses: [8.8.8.8,114.114.114.114] # DNS解析地址
#            dhcp4: true
#            optional: true
    version: 2
    renderer: networkd

5. 执行

sudo netplan apply

注：其他版本可能不适用该方法。