Multiple erros when trying to generate GCE inventory via Inventory Plugin

[cheomanigua]

SUMMARY

When trying to generate a Google Cloud Engine inventory via Inventory Plugin, I get multiple errors

ISSUE TYPE

• Bug Report

COMPONENT NAME

Inventory Plugin

ANSIBLE VERSION

ansible 2.9.14
  config file = /etc/ansible/ansible.cfg
  configured module search path = [u'/home/cheo/.ansible/plugins/modules', u'/usr/share/ansible/plugins/modules']
  ansible python module location = /usr/lib/python2.7/dist-packages/ansible
  executable location = /usr/bin/ansible
  python version = 2.7.17 (default, Jul 20 2020, 15:37:01) [GCC 7.5.0]

CONFIGURATION

INVENTORY_ENABLED(/etc/ansible/ansible.cfg) = [u'host_list', u'virtualbox', u'yaml', u'constructed']

OS / ENVIRONMENT

Ubuntu 18.04.5 LTS
Linux 4.15.0-118-generic #119-Ubuntu SMP x86_64

STEPS TO REPRODUCE

ansible-inventory -i inventory-gcp_compute.yml --graph

plugin: gcp_compute
zones: # populate inventory with instances in these regions
  - us-central1-a
projects:
  - vpn-server-sasp
#filters:
  #- machineType = n1-standard-1
  #- scheduling.automaticRestart = true AND machineType = n1-standard-1
service_account_file: /home/cheo/sergio/ansible-gce/vpn-server-sasp-d5e0d0f06446.json
auth_kind: serviceaccount
scopes:
  - 'https://www.googleapis.com/auth/cloud-platform'
  - 'https://www.googleapis.com/auth/compute.readonly'
keyed_groups:
  # Create groups from GCE labels
  - prefix: gcp
    key: labels
hostnames:
  # List host by name instead of the default public ip
  - name
compose:
  # Set an inventory parameter to use the Public IP address to connect to the host
  # For Private ip use "networkInterfaces[0].networkIP"
  ansible_host: networkInterfaces[0].accessConfigs[0].natIP

EXPECTED RESULTS

A list of GCE instances

ACTUAL RESULTS

ansible-inventory 2.9.14
  config file = /etc/ansible/ansible.cfg
  configured module search path = [u'/home/cheo/.ansible/plugins/modules', u'/usr/share/ansible/plugins/modules']
  ansible python module location = /usr/lib/python2.7/dist-packages/ansible
  executable location = /usr/bin/ansible-inventory
  python version = 2.7.17 (default, Jul 20 2020, 15:37:01) [GCC 7.5.0]
Using /etc/ansible/ansible.cfg as config file
host_list declined parsing /home/cheo/sergio/ansible-gce/inventory-gcp_compute.yml as it did not pass its verify_file() method
virtualbox declined parsing /home/cheo/sergio/ansible-gce/inventory-gcp_compute.yml as it did not pass its verify_file() method
[WARNING]:  * Failed to parse /home/cheo/sergio/ansible-gce/inventory-gcp_compute.yml with yaml plugin: Plugin configuration YAML file, not YAML inventory
  File "/usr/lib/python2.7/dist-packages/ansible/inventory/manager.py", line 280, in parse_source
    plugin.parse(self._inventory, self._loader, source, cache=cache)
  File "/usr/lib/python2.7/dist-packages/ansible/plugins/inventory/yaml.py", line 112, in parse
    raise AnsibleParserError('Plugin configuration YAML file, not YAML inventory')
[WARNING]:  * Failed to parse /home/cheo/sergio/ansible-gce/inventory-gcp_compute.yml with constructed plugin: Incorrect plugin name in file: gcp_compute
  File "/usr/lib/python2.7/dist-packages/ansible/inventory/manager.py", line 280, in parse_source
    plugin.parse(self._inventory, self._loader, source, cache=cache)
  File "/usr/lib/python2.7/dist-packages/ansible/plugins/inventory/constructed.py", line 109, in parse
    self._read_config_data(path)
  File "/usr/lib/python2.7/dist-packages/ansible/plugins/inventory/__init__.py", line 224, in _read_config_data
    raise AnsibleParserError("Incorrect plugin name in file: %s" % config.get('plugin', 'none found'))
[WARNING]: Unable to parse /home/cheo/sergio/ansible-gce/inventory-gcp_compute.yml as an inventory source
[WARNING]: No inventory was parsed, only implicit localhost is available