cloud-init "nocloud" networking setup

README.md

cloud-init is absolute cancer. Its code is horrible. It has no documentation at all.

It took me 5 fucking hours to figure out how to properly configure networking on recent cloud-init (Ubuntu 16.04 cloud image) with local datasource.

It's not mentioned anywhere you need to provide dsmode: local. (but only if you need network-config, besides that everything is fine; someone below noted that -m flag does the same thing, good to know) Of course nobody needs documentation for network-config format either. (cloudinit/net/__init__.py is a protip, enjoy the feces dive)

Oh, and by the way - no, it's not possible to provide network-config to uvt-kvm without patching shit.

Use -N flag for cloud-localds for network-config.

meta-data

dsmode: local
# ↑ THIS. SHIT.

network-config

---
version: 1
config:
 - type: physical
   name: ens3
   subnets:
    - control: auto
      type: static
      address: |
         192.168.21.37
             pre-up echo xD > /tmp/yesitsthereyo # quality configuration injection, real thing

user-data

#cloud-config
chpasswd:
  list: |
    root:password
  expire: False
write_files:
  - content: |
    You don't really need that, just a bloody test.
  path: /root/test.txt

This saved me so much time! Fuck it, why even bother having one config for different network managers? Just a few run commands on the network manager and it was done. Mostly different cloud-config files for each linux distro anyway.