As you might have heard, Ubuntu (server) 18.04 uses a new network configuration system named Netplan.<\/p>\n
Well, Netplan is not entirely new, it was introduced in Ubuntu 17:10 but I did not pay to much attention to it at the time because I prefer the Ubuntu LTS editions.<\/p>\n
The first big change you will notice is the location the where the network configuration is stored. If you grab the default image form the Ubuntu website, there will be a file named “50-cloud-init.yaml” which is located in “\/etc\/netplan\/”. The funny part is, this is not the only place you can store network configuration files. A blog post on the Ubuntu blog<\/a> shows there are 3 locations available for storing network configurations (in order of importance):<\/p>\n You can place any number of .yaml files in each of the above directory’s, where the lowest alphabetical filename will be the leading one (A*.yaml before B*.yaml). If a filename is used in multiple directory’s, the one in the most important directory will be the leading one.<\/p>\n Did I mention the files are YAML? Great lets use an indentation dependent format, what could possibly go wrong when using nano or VI without formatting and validation tools.<\/p>\n Needles to say, this might become a bit confusing when you need to troubleshoot a system you did not configure or maintain.<\/p>\n But enough of my ranting, lets she how we can configure a static IP address.<\/p>\n Luckily Canonical did set up a webpage to provide information about Netplan (https:\/\/netplan.io<\/a>) this page also contains a neat set of Netplan examples.<\/a><\/p>\n The main page also explains that the default configuration location should be in “\/etc\/netplan\/” there are no guidelines about the names for the configuration files, so you can “go ham” on those.<\/p>\n The configuration itself is kind of straight forward here is a basic IPv4 configuration with 2 name servers:<\/p>\n If you want IPv4 DHCP instead see below (for IPv6 set “dhcp6” to true and “dhcp4” to false):<\/p>\n Don’t forget to apply the configuration when your done<\/p>\n\n
network:\r\n ethernets:\r\n eth0:\r\n addresses:\r\n - 192.168.0.2\/24\r\n gateway4: 192.168.0.1\r\n nameservers:\r\n addresses: [192.168.0.1,8.8.8.8]\r\n\r\n<\/pre>\n
network:\r\n version: 2\r\n ethernets:\r\n eth0:\r\n dhcp4: true\r\n dhcp6: false\r\n\r\n<\/pre>\n
sudo netplan apply<\/pre>\n