ubuntu 18.04 network after cloud-init removal

Question

I installed new Ubuntu 18.04 on my home server and i noticed that /etc/network/interfaces file is empty. After searching on internet I found out that version 18.04 uses cloud-init package to init networking and other stuff. I removed cloud-init package and configured interface in /etc/network/interfaces for static IP but now after I reboot server it seems that networking is not configured before services startup because every service configured to listed on that interface fails to listen. After server is booted i have to manually run command service [name] start. How do I fix this?

Interface config image

Interface config image

Did you run `systemct list-unit-files | grep networking` to see if it's enabled? — Nasir Riley, Jun 30 '18 at 03:35
```systemctl list-unit-files | grep networking``` outputs nothing but ```systemctl list-unit-files | grep network``` outputs [this](https://i.imgur.com/Q7kaWL0.png). — Richardds, Jul 01 '18 at 18:01

score 11 · Accepted Answer · answered Jul 07 '18 at 04:52

Ubuntu has changed the tooling behind its network configuration, and that's what you're running into now with your 18.04 system. The new system is Netplan, and /etc/network/interfaces and the related ifupdown tools have been deprecated.

Since you removed cloud-init it's not really the problem here. You have two ways to move forward - you can either 1) configure Netplan with your static IP info; or 2) re-install the legacy ifupdown package and use it like you used to.

To configure Netplan, remove the config file that cloud-init probably left behind: rm /etc/netplan/50-cloud-init.yaml

And then create a new config file named something like /etc/netplan/99_config.yaml and adapt one of the config file examples found here.

ubuntu 18.04 network after cloud-init removal

1 Answers1