root@9e4755cadd13:~/openstack-ci-cloud/openstack-ansible/playbooks# ansible lsnmc1023 -m debug -a var=hostvars -vvvv
Variable files: "-e @/etc/openstack_deploy/user_secrets.yml "
ansible 2.4.1.0
  config file = None
  configured module search path = ['/etc/ansible/roles/plugins/library']
  ansible python module location = /opt/ansible-runtime/lib/python3.5/site-packages/ansible
  executable location = /opt/ansible-runtime/bin/ansible
  python version = 3.5.2 (default, Nov 23 2017, 16:37:01) [GCC 5.4.0 20160609]
No config file found; using defaults
setting up inventory plugins
Parsed /home/ubuntu/openstack-ci-cloud/openstack-ansible/inventory/dynamic_inventory.py inventory source with script plugin
 [WARNING]: Unable to parse /etc/openstack_deploy/inventory.ini as an inventory source

Loading callback plugin minimal of type stdout, v2.0 from /opt/ansible-runtime/lib/python3.5/site-packages/ansible/plugins/callback/__init__.py
META: ran handlers
container_name: "lsnmc1023"
physical_host: "lsnmc1023"
The full traceback is:
Traceback (most recent call last):
  File "/opt/ansible-runtime/lib/python3.5/site-packages/ansible/executor/task_executor.py", line 125, in run
    res = self._execute()
  File "/opt/ansible-runtime/lib/python3.5/site-packages/ansible/executor/task_executor.py", line 521, in _execute
    result = self._handler.run(task_vars=variables)
  File "/opt/ansible-runtime/lib/python3.5/site-packages/ansible/plugins/action/debug.py", line 57, in run
    results = self._templar.template(self._task.args['var'], convert_bare=True, fail_on_undefined=True, bare_deprecated=False)
  File "/opt/ansible-runtime/lib/python3.5/site-packages/ansible/template/__init__.py", line 450, in template
    disable_lookups=disable_lookups,
  File "/opt/ansible-runtime/lib/python3.5/site-packages/ansible/template/__init__.py", line 672, in do_template
    res = j2_concat(rf)
  File "<template>", line 11, in root
  File "/opt/ansible-runtime/lib/python3.5/site-packages/ansible/vars/hostvars.py", line 117, in __repr__
    out[host] = self.get(host)
  File "/opt/ansible-runtime/lib/python3.5/_collections_abc.py", line 595, in get
    return self[key]
  File "/opt/ansible-runtime/lib/python3.5/site-packages/ansible/vars/hostvars.py", line 91, in __getitem__
    self._cached_result[sha1_hash] = templar.template(data, fail_on_undefined=False, static_vars=STATIC_VARS)
  File "/opt/ansible-runtime/lib/python3.5/site-packages/ansible/template/__init__.py", line 494, in template
    disable_lookups=disable_lookups,
  File "/opt/ansible-runtime/lib/python3.5/site-packages/ansible/template/__init__.py", line 494, in template
    disable_lookups=disable_lookups,
  File "/opt/ansible-runtime/lib/python3.5/site-packages/ansible/template/__init__.py", line 494, in template
    disable_lookups=disable_lookups,
  File "/opt/ansible-runtime/lib/python3.5/site-packages/ansible/template/__init__.py", line 450, in template
    disable_lookups=disable_lookups,
  File "/opt/ansible-runtime/lib/python3.5/site-packages/ansible/template/__init__.py", line 672, in do_template
    res = j2_concat(rf)
  File "<template>", line 13, in root
  File "/opt/ansible-runtime/lib/python3.5/site-packages/jinja2/runtime.py", line 262, in call
    return __obj(*args, **kwargs)
ValueError: 'lsnmc1016' is not in list

lsnmc1023 | FAILED! => {
    "failed": true,
    "msg": "Unexpected failure during module execution.",
    "stdout": ""
}