Configuring netplan on Ubuntu

Netplan is the default network manager that Ubuntu uses. To configure a static network configuration on Ubuntu using netplan, follow these steps:

• Use the command ls /etc/netplan to return the name of the configuration file with the .yaml extension, which in the case of these instructions I will us 01-network-manager-all.yaml. Make sure you use the name of your .yaml file in the commands in future steps.
• Before making any changes to this file, make sure to create a backup copy of it, using the command, sudo cp /etc/netplan/01-network-manager-all.yaml 01-network-manager-all.yaml.bak
• Edit the netplan configuration file. I used vi, using the command sudo vi /etc/netplan/01-network-manager-all.yaml
• Then add the following lines by replacing the interface name, IP address, gateway, and DNS information that fit your networking needs.

network:
  version: 2
  ethernets:
   ens33:
     dhcp4: False
     addresses:
     - 10.0.5.12/24
     gateway4: 10.0.5.2
     nameservers:
       search: [morris.local]
       addresses: 
       - 10.0.5.5

• Once done, save and close the file.
• To test the new configuration use the command, sudo netplan try
  • Note: If it validates the configuration, you will receive the configuration accepted message; otherwise, it rolls back to the previous configuration.
• Run the following command to apply the new configurations: sudo netplan apply
• After applying the configurations, check that your IP configuration was applied using the command, ip a