yahoo-eng-team team mailing list archive

[Christian Grabowski <1931735@xxxxxxxxxxxxxxxxxx>]

** Also affects: cloud-init
   Importance: Undecided
       Status: New

-- 
You received this bug notification because you are a member of Yahoo!
Engineering Team, which is subscribed to cloud-init.
https://bugs.launchpad.net/bugs/1931735

Title:
  node failed to deploy because an ephemeral network device was not
  found

Status in cloud-init:
  New
Status in MAAS:
  New

Bug description:
  Hi,

  Using MAAS snap 2.8.6-8602-g.07cdffcaa.

  I just had a node failed to deploy because a network device that was
  present during commissioning wasn't present anymore, making cloud-init
  sad. To be precise, the node deployed properly, rebooted, and during
  the post-deploy boot, cloud-init got sad with :

  RuntimeError: Not all expected physical devices present:
  {'be:65:46:cb:58:b7'}

  (full stacktrace at https://pastebin.canonical.com/p/9Ycxwk5rRy/)

  I was indeed able to find the network device with MAC address
  'be:65:46:cb:58:b7', and it's an ephemeral NIC that gets created when
  someone logs in the HTML5 console (this is a Gigabyte server by the
  way). So someone was probably logged on the HTML5 console when the
  node was commissioned.

  I deleted this ephemeral device from the node in MAAS, and was then
  able to deploy it properly.

  These ephemeral NICs appear to have random MAC addresses. I was logged
  on the HTML5 console during the boot logged above, and you can see
  there's a device named "enx5a099ca01d4b" with MAC address
  "5a:09:9c:a0:1d:4b" (which doesn't match a known OUI).

  This is actually a cdc_ether device :
  $ dmesg|grep cdc_ether
  [   29.867170] cdc_ether 1-1.3:2.0 usb0: register 'cdc_ether' at usb-0000:06:00.3-1.3, CDC Ethernet Device, 5a:09:9c:a0:1d:4b
  [   29.867296] usbcore: registered new interface driver cdc_ether
  [   29.958137] cdc_ether 1-1.3:2.0 enx5a099ca01d4b: renamed from usb0
  [  205.908811] cdc_ether 1-1.3:2.0 enx5a099ca01d4b: unregister 'cdc_ether' usb-0000:06:00.3-1.3, CDC Ethernet Device

  (the last time is very probably when I logged off the HTML5 console,
  which removes the device).

  So I think :
  - MAAS should ignore these devices by default
  - cloud-init shouldn't die when a cdc_ether device is missing.

  Thanks

To manage notifications about this bug go to:
https://bugs.launchpad.net/cloud-init/+bug/1931735/+subscriptions