How to configure static IP address on Ubuntu 18.04 Bionic Beaver Linux

1. Objective
2. Operating System and Software Versions
3. Requirements
4. Difficulty
5. Conventions
6. Instructions
- 6.1. Configure static IP address using DHCP
- 6.2. Configure static IP address using Netplan
  - 6.2.1. Ubuntu Server
- 6.3. Ubuntu Desktop
- 6.4. Configure static IP address using interfaces file

Objective

The objective is to configure static IP address on Ubuntu 18.04 Bionic Beaver Linux

Operating System and Software Versions

Operating System: – Ubuntu 18.04 Bionic Beaver Linux

Requirements

Privileged access to Ubuntu 18.04 system will be required.

Difficulty

EASY

Conventions

# – requires given linux commands to be executed with root privileges either directly as a root user or by use of sudo command
$ – requires given linux commands to be executed as a regular non-privileged user

Instructions

Configure static IP address using DHCP

Most likely your current Ubuntu system uses DHCP server to configure its networking settings. Hence, the configuration of your IP address is dynamic. In many scenarios, simply configuring your router or local DHCP server is a preferred way to set a static address to any host regardless of the operating system in use. Check your router manual and assign the static IP address to your host based on its MAC address using the DHCP service.

Configure static IP address using Netplan

Netplan network configuration had been first introduced to Ubuntu 18.04 LTS Bionic Beaver. It is available to all new Ubuntu 18.04 installations.

Depending on your Ubuntu installation Netplan may not be avaiable on upgraded Ubuntu systems. If this is your case you might attempt to configure a static IP address for your network interface using /etc/network/interfaces file as described at the end of this document.

Ubuntu Server

To configure a static IP address on your Ubuntu 18.04 server you need to modify a relevant netplan network configuration file within /etc/netplan/ directory.

For example you might find there a default netplan configuration file called 01-netcfg.yaml or 50-cloud-init.yaml with a following content instructing the networkd deamon to configure your network interface via DHCP:

# This file describes the network interfaces available on your system
# For more information, see netplan(5).
network:
  version: 2
  renderer: networkd
  ethernets:
    enp0s3:
      dhcp4: yes

To set your network interface enp0s3 to static IP address 192.168.1.222 with gateway 192.168.1.1 and DNS server as 8.8.8.8 and 8.8.4.4 replace the above configuration with the one below.WARNING:
You must adhere to a correct code indent for each line of the block. In other words the prefix number of spaces for each line is important. Othersiwe you may end up with an error message similar to: Invalid YAML at //etc/netplan/01-netcfg.yaml line 7 column 6: did not find expected key

# This file describes the network interfaces available on your system
# For more information, see netplan(5).
network:
  version: 2
  renderer: networkd
  ethernets:
    enp0s3:
     dhcp4: no
     addresses: [192.168.1.222/24]
     gateway4: 192.168.1.1
     nameservers:
       addresses: [8.8.8.8,8.8.4.4]

Once ready apply changes with:

$ sudo netplan apply

In case you run into some issues execute:

$ sudo netplan --debug apply

AITEC Wiki

UBUNTU – configurer ip statique sur ubuntu 18