[lxc-users] cloud-init network config error

[Claude.Durocher at sct.gouv.qc.ca]

 I'm trying to use cloud-init to control network configuration of a Lxd container. Here's the config I use:

#cloud-config.yml
network:
  version: 1
  config:
    - type: physical
      name: eth0
      subnets:
        - type: static
          ipv4: true
          address: 10.10.10.20
          netmask: 255.255.255.0
          gateway: 10.10.10.1
          control: auto
    - type: nameserver
      address: 10.10.10.1
      
I'm launching the container on Ubuntu 16.04 (v2.0.9) with the following:

lxc launch ubuntu: CONTAINER -c user.network-config="$(cat cloud-config.yml)"

In the container, cloud-init fail to apply the network configuration. 

/var/lib/cloud/seed/nocloud-net/network-config : file created
/etc/network/interfaces.d/50-cloud-init.cfg : file not created

In cloud-init.log :

2017-03-13 20:51:44,436 - stages.py[DEBUG]: applying net config names for {'config': {'user.network-config': 'version: 1\nconfig:\n  - type: physical\n    name: eth0\n    subnets:\n      - type: static\n        ipv4: true\n        address: 10.10.10.20\n        netmask: 255.255.255.0\n        gateway: 10.10.10.1\n        control: auto\n  - type: nameserver\n    address: 10.10.10.1\n'}}
2017-03-13 20:51:44,436 - stages.py[DEBUG]: Using distro class <class 'cloudinit.distros.ubuntu.Distro'>
2017-03-13 20:51:44,437 - stages.py[WARNING]: Failed to rename devices: 'str' object has no attribute 'get'
2017-03-13 20:51:44,438 - stages.py[INFO]: Applying network configuration from ds bringup=False: {'config': {'user.network-config': 'version: 1\nconfig:\n  - type: physical\n    name: eth0\n    subnets:\n      - type: static\n        ipv4: true\n        address: 10.10.10.20\n        netmask: 255.255.255.0\n        gateway: 10.10.10.1\n        control: auto\n  - type: nameserver\n    address: 10.10.10.1\n'}}
2017-03-13 20:51:44,439 - util.py[WARNING]: failed stage init-local
2017-03-13 20:51:44,439 - util.py[DEBUG]: failed stage init-local
Traceback (most recent call last):
  File "/usr/lib/python3/dist-packages/cloudinit/cmd/main.py", line 513, in status_wrapper
    ret = functor(name, args)
  File "/usr/lib/python3/dist-packages/cloudinit/cmd/main.py", line 269, in main_init
    init.apply_network_config(bring_up=bool(mode != sources.DSMODE_LOCAL))
  File "/usr/lib/python3/dist-packages/cloudinit/stages.py", line 641, 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 446, 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 404, in _render_interfaces
    for iface in network_state.iter_interfaces():
AttributeError: 'NoneType' object has no attribute 'iter_interfaces'

Claude
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