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[Pavel Sviderski <pavel@xxxxxxxxxxxxxxx>]

Public bug reported:

When docker version 0.9.0 is used the nova docker driver cannot create
an instance.

2014-03-14 14:19:57.010 ERROR nova.scheduler.filter_scheduler [req-
6a76b8b0-54a5-47ea-972a-4afbaa7fbe95 admin demo] [instance: f049452c-
af4b-4e72-a5bf-30e98de634a5] Error from last host: precise64 (node
precise64): [u'Traceback (most recent call last):\n', u'  File
"/opt/stack/nova/nova/compute/manager.py", line 1070, in
_build_instance\n    set_access_ip=set_access_ip)\n', u'  File
"/opt/stack/nova/nova/compute/manager.py", line 357, in
decorated_function\n    return function(self, context, *args,
**kwargs)\n', u'  File "/opt/stack/nova/nova/compute/manager.py", line
1478, in _spawn\n    LOG.exception(_(\'Instance failed to spawn\'),
instance=instance)\n', u'  File
"/opt/stack/nova/nova/openstack/common/excutils.py", line 68, in
__exit__\n    six.reraise(self.type_, self.value, self.tb)\n', u'  File
"/opt/stack/nova/nova/compute/manager.py", line 1475, in _spawn\n
block_device_info)\n', u'  File
"/opt/stack/nova/nova/virt/docker/driver.py", line 311, in spawn\n
instance_id=instance[\'name\'])\n', u'InstanceDeployFailure: Cannot
setup network: Cannot find any PID under container
"a4892757db16edc62dfda981859a11e02d07a40cdfca83d9e466e841ba4094e3"\n']

The driver fails in the '_find_container_pid' method. The reason is that
in 0.9 there is a new built-in execution driver used by default
(libcontainer). Instead of cgroup path /sys/fs/cgroup/devices/lxc/ it
uses /sys/fs/cgroup/devices/docker/.

Could it be possible to rewrite _find_container_pid using the docker
remote api and do not access cgroup filesystem directly?

** Affects: nova
     Importance: Undecided
         Status: New


** Tags: docker

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https://bugs.launchpad.net/bugs/1292479

Title:
  Instance creation fails using Docker 0.9.0

Status in OpenStack Compute (Nova):
  New

Bug description:
  When docker version 0.9.0 is used the nova docker driver cannot create
  an instance.

  2014-03-14 14:19:57.010 ERROR nova.scheduler.filter_scheduler [req-
  6a76b8b0-54a5-47ea-972a-4afbaa7fbe95 admin demo] [instance: f049452c-
  af4b-4e72-a5bf-30e98de634a5] Error from last host: precise64 (node
  precise64): [u'Traceback (most recent call last):\n', u'  File
  "/opt/stack/nova/nova/compute/manager.py", line 1070, in
  _build_instance\n    set_access_ip=set_access_ip)\n', u'  File
  "/opt/stack/nova/nova/compute/manager.py", line 357, in
  decorated_function\n    return function(self, context, *args,
  **kwargs)\n', u'  File "/opt/stack/nova/nova/compute/manager.py", line
  1478, in _spawn\n    LOG.exception(_(\'Instance failed to spawn\'),
  instance=instance)\n', u'  File
  "/opt/stack/nova/nova/openstack/common/excutils.py", line 68, in
  __exit__\n    six.reraise(self.type_, self.value, self.tb)\n', u'
  File "/opt/stack/nova/nova/compute/manager.py", line 1475, in _spawn\n
  block_device_info)\n', u'  File
  "/opt/stack/nova/nova/virt/docker/driver.py", line 311, in spawn\n
  instance_id=instance[\'name\'])\n', u'InstanceDeployFailure: Cannot
  setup network: Cannot find any PID under container
  "a4892757db16edc62dfda981859a11e02d07a40cdfca83d9e466e841ba4094e3"\n']

  The driver fails in the '_find_container_pid' method. The reason is
  that in 0.9 there is a new built-in execution driver used by default
  (libcontainer). Instead of cgroup path /sys/fs/cgroup/devices/lxc/ it
  uses /sys/fs/cgroup/devices/docker/.

  Could it be possible to rewrite _find_container_pid using the docker
  remote api and do not access cgroup filesystem directly?

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