This tutorials will walk you though the steps required to configure a server static IP address by modifying the Netplan configuration.
1. Edit the configuration
First find the right Netplan configuration filename, and edit the file:
cd /etc/netplan && ls # find the netplan filename
sudo nano ##-network-manager-all.yaml
If the Netplan configuration is empty, fill in the file with the example below. Otherwise,
input the IP address reserved for the server in
xxx.xxx.xxx.xxx/yy format, the gateway (the IP address
of your router), and your DNS server's address.
If you don't have your own DNS server you can use the router's address in most cases or a public DNS server like Google
18.104.22.168 or Cloudflare
2. Apply the configuration
After the Netplan file has been saved, apply the changes by running:
sudo netplan apply