New release Ubuntu 18.04 Bionic Beaver. So I want to configure static IP address on Ubuntu 18.04.  If your network dhcp server doesn’t enable. So static ip address configure needed.

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Step #01: At first netplan generate command run on terminal.

root@technologyrsslocal:~# netplan generate

Then open netplan config file.

root@technologyrsslocal:~# vi /etc/netplan/50-cloud-init.yaml

Insert all config like as below.

network:
 ethernets:
 eth0:
  addresses: [ ]
  dhcp4: false
  optional: true
 eth1:
  addresses: [10.66.110.20/16]
  gateway4: 10.66.10.1
  nameservers:
   addresses: [8.8.8.8,8.8.4.4]
  dhcp4: false
  optional: true
 version: 2

Or, try below details

network:
    ethernets:
        eth1:
            addresses:
            - 10.66.110.20/16
            dhcp4: false
            gateway4: 10.66.10.1
            nameservers:
                addresses:
                - 8.8.8.8
                - 8.8.4.4
                search:
                - workgroup
    version: 2

Step #02: Now run netplan apply command.

root@technologyrsslocal:~# netplan apply

That’s fine and using static IP configure. Also see my YouTube channel for more details.