Openstack Not able to connect to using rest api - openstack

Question

I have a local install on openstack on my virtual box. I am trying to use the lib cloud api to connnect and get a list of images,flavours etc.
Below is the code that I am trying to execute
from libcloud.compute.types import Provider
from libcloud.compute.providers import get_driver
# Authentication information so you can authenticate to DreamCompute
# copy the details from the OpenStack RC file
# https://dashboard.dreamcompute.com/project/access_and_security/api_access/openrc/
auth_username = 'admin'
auth_password = 'f882e2f4eaad434c'
TENANT_NAME = 'admin'
project_name = 'admin'
auth_url = 'http://192.168.56.101:5000/v3/tokens'
region_name = 'RegionOne'
provider = get_driver(Provider.OPENSTACK)
conn = provider(auth_username,
auth_password,
ex_force_auth_url=auth_url,
ex_force_auth_version='2.0_password',
ex_tenant_name=project_name,
ex_force_service_type='compute',
ex_force_service_name='compute',
ex_force_base_url='http://192.168.56.101:8774/v2.1/29a8949bc3a04bfead0654be8e552017')
# Get the image that we want to use by its id
# NOTE: the image_id may change. See the documentation to find
# all the images available to your user
image_id = '4525d442-e9f4-4d19-889f-49ab03be93df'
image = conn.get_image(image_id)
# Get the flavor that we want to use by its id
flavor_id = '100'
flavor = conn.ex_get_size(flavor_id)
# Create the node with the name “PracticeInstance”
# and the size and image we chose above
instance = conn.create_node(name='PracticeInstance', image=image, size=flavor)
When I run the above code I am getting below error:
C:\Python dev\website\music\openstack>python openstack.py
Traceback (most recent call last):
File "openstack.py", line 30, in <module>
image = conn.get_image(image_id)
File "C:\Users\C5265680\AppData\Local\Programs\Python\Python36\lib\site-packages\libcloud\compute\drivers\openstack.py", line 2028, in get_image
'/images/%s' % (image_id,)).object['image'])
File "C:\Users\C5265680\AppData\Local\Programs\Python\Python36\lib\site-packages\libcloud\common\openstack.py", line 223, in request
raw=raw)
File "C:\Users\C5265680\AppData\Local\Programs\Python\Python36\lib\site-packages\libcloud\common\base.py", line 536, in request
action = self.morph_action_hook(action)
File "C:\Users\C5265680\AppData\Local\Programs\Python\Python36\lib\site-packages\libcloud\common\openstack.py", line 290, in morph_action_hook
self._populate_hosts_and_request_paths()
File "C:\Users\C5265680\AppData\Local\Programs\Python\Python36\lib\site-packages\libcloud\common\openstack.py", line 324, in _populate_hosts_and_request_paths
osa = osa.authenticate(**kwargs) # may throw InvalidCreds
File "C:\Users\C5265680\AppData\Local\Programs\Python\Python36\lib\site-packages\libcloud\common\openstack_identity.py", line 855, in authenticate
return self._authenticate_2_0_with_password()
File "C:\Users\C5265680\AppData\Local\Programs\Python\Python36\lib\site-packages\libcloud\common\openstack_identity.py", line 880, in _authenticate_2_0_with_password
return self._authenticate_2_0_with_body(reqbody)
File "C:\Users\C5265680\AppData\Local\Programs\Python\Python36\lib\site-packages\libcloud\common\openstack_identity.py", line 885, in _authenticate_2_0_with_body
method='POST')
File "C:\Users\C5265680\AppData\Local\Programs\Python\Python36\lib\site-packages\libcloud\common\base.py", line 637, in request
response = responseCls(**kwargs)
File "C:\Users\C5265680\AppData\Local\Programs\Python\Python36\lib\site-packages\libcloud\common\base.py", line 157, in __init__
message=self.parse_error())
libcloud.common.exceptions.BaseHTTPError: {"error": {"message": "The resource could not be found.", "code": 404, "title": "Not Found"}}
I have checked the logs in my server at /var/log/keystone and it does not give any error so I am guessing that I am able to login.
Also there are many examples which show that after the above steps I should be able to get list of images/flavors/servers.
Not sure why i am not able to connect. Can someone please help me with this.

Answer 1

I think you should modify the auth_url and provider arguments.
As following argument set is worked at my environment.
auth_username = 'admin'
auth_password = 'f882e2f4eaad434c'
TENANT_NAME = 'admin'
project_name = 'admin'
auth_url = 'http://192.168.56.101:5000'
region_name = 'RegionOne'
provider = get_driver(Provider.OPENSTACK)
conn = provider(auth_username,
auth_password,
ex_force_auth_url=auth_url,
ex_force_auth_version='2.0_password',
ex_tenant_name=project_name)
Updated 2017.11.16
#user8040338 Your error message is the first clue,
The resource could not be found. and status code 404, the most cause of its message and status code is wrong rest api url format.
Firstly, you need to check keystone v2.0 rest api format.
At the same time, you check again Libcloud reference.
For instance, the argument ex_force_auth_version had been specified the api version 2.0_password (v2), but auth_url variable formed the url including the version resource /v3, it was wrong version and usage of API with the libcloud API argument you specified. auth_url should be a base URL from API usage.
The similar processes about each argument of API should be conducted repeatedly until solving issues.