init-local fails with network: config: disabled from NoCloud datasource.

[Witold Krecicki]

When passing network-config "network: config: disabled" via NoCloud I'm getting the following error in cloud-init.log:

2017-04-04 10:08:01,021 - stages.py[INFO]: Applying network configuration from ds bringup=False: {'network': {'config': 'disabled'}}
2017-04-04 10:08:01,021 - util.py[WARNING]: failed stage init-local
2017-04-04 10:08:01,021 - util.py[DEBUG]: failed stage init-local
Traceback (most recent call last):
  File "/usr/lib/python3/dist-packages/cloudinit/cmd/main.py", line 647, in status_wrapper
    ret = functor(name, args)
  File "/usr/lib/python3/dist-packages/cloudinit/cmd/main.py", line 365, in main_init
    init.apply_network_config(bring_up=bool(mode != sources.DSMODE_LOCAL))
  File "/usr/lib/python3/dist-packages/cloudinit/stages.py", line 648, in apply_network_config
    return self.distro.apply_network_config(netcfg, bring_up=bring_up)
  File "/usr/lib/python3/dist-packages/cloudinit/distros/__init__.py", line 150, in apply_network_config
    dev_names = self._write_network_config(netconfig)
  File "/usr/lib/python3/dist-packages/cloudinit/distros/debian.py", line 84, in _write_network_config
    self._net_renderer.render_network_state("/", ns)
  File "/usr/lib/python3/dist-packages/cloudinit/net/eni.py", line 451, in render_network_state
    util.write_file(fpeni, header + self._render_interfaces(network_state))
  File "/usr/lib/python3/dist-packages/cloudinit/net/eni.py", line 409, in _render_interfaces
    for iface in network_state.iter_interfaces():
AttributeError: 'NoneType' object has no attribute 'iter_interfaces'

[Scott Moser (smoser)]

I'm pretty sure this will work if you provide it with a network-config file of:
config: disabled

The top level 'network' does not need to be repeated in the 'network-config' file as it is assumed to be network config due to its anme.

I've just tested in an lxc container doing:

echo "config: disabled" > /var/lib/cloud/seed/nocloud-net/network-config

if that doesnt fix the problem, please set Status back to New.

[Launchpad Janitor (janitor)]

[Expired for cloud-init because there has been no activity for 60 days.]

[James Falcon (falcojr)]

Tracked in Github Issues as https://github.com/canonical/cloud-init/issues/2850