Ubuntu 18.04 Network Configuration After Cloud-Init Removal

cloud-initUbuntu

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

Best Answer

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.

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