使用SDK进行Openstack开发 - auth_url不起作用

Question

使用this link进入openstack dev，我的auth_url的格式为http://192.168.43.18/identity/v3，来自openstack RC yaml文件。当我使用它，因为在链接中使用，我得到了以下错误消息：

Traceback (most recent call last): 
    File "conn_tester.py", line 22, in <module> 
    images = conn.list_images() 
    File "/usr/local/lib/python2.7/dist-packages/libcloud/compute/drivers/openstack.py", line 282, in list_images 
    self.connection.request('/images/detail').object, ex_only_active) 
    File "/usr/local/lib/python2.7/dist-packages/libcloud/common/openstack.py", line 223, in request 
    raw=raw) 
    File "/usr/local/lib/python2.7/dist-packages/libcloud/common/base.py", line 536, in request 
    action = self.morph_action_hook(action) 
    File "/usr/local/lib/python2.7/dist-packages/libcloud/common/openstack.py", line 290, in morph_action_hook 
    self._populate_hosts_and_request_paths() 
    File "/usr/local/lib/python2.7/dist-packages/libcloud/common/openstack.py", line 324, in _populate_hosts_and_request_paths 
    osa = osa.authenticate(**kwargs) # may throw InvalidCreds 
    File "/usr/local/lib/python2.7/dist-packages/libcloud/common/openstack_identity.py", line 855, in authenticate 
    return self._authenticate_2_0_with_password() 
    File "/usr/local/lib/python2.7/dist-packages/libcloud/common/openstack_identity.py", line 880, in _authenticate_2_0_with_password 
    return self._authenticate_2_0_with_body(reqbody) 
    File "/usr/local/lib/python2.7/dist-packages/libcloud/common/openstack_identity.py", line 885, in _authenticate_2_0_with_body 
    method='POST') 
    File "/usr/local/lib/python2.7/dist-packages/libcloud/common/base.py", line 637, in request 
    response = responseCls(**kwargs) 
    File "/usr/local/lib/python2.7/dist-packages/libcloud/common/base.py", line 157, in __init__ 
    message=self.parse_error()) 
libcloud.common.exceptions.BaseHTTPError: {"error": {"message": "get_version_v3() got an unexpected keyword argument 'auth'", "code": 400, "title": "Bad Request"}} 

我试图改变的验证网址来http://192.168.43.18:35357还端口是5000，但我得到这个错误：

requests.exceptions.ConnectionError: HTTPConnectionPool(host='192.168.43.18', port=35357): Max retries exceeded with url: /v2.0/tokens (Caused by NewConnectionError('<urllib3.connection.HTTPConnection object at 0x7fe06f7dff90>: Failed to establish a new connection: [Errno 111] Connection refused',)) 

使用devstack版本16.0.0

Python代码：

from libcloud.compute.types import Provider 
from libcloud.compute.providers import get_driver 

auth_username = 'demo' 
auth_password = 'password' 
#auth_url = 'http://controller:5000' 
auth_url = 'http://192.168.43.18:35357' 
#auth_url = 'http://192.168.43.18/identity/v3/' 
project_name = 'demo' 
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_region=region_name) 


#print "hello" 
images = conn.list_images() 
for image in images: 
    print(image) 

Answer 1

它看起来像你可以指定v3代替：

from libcloud.compute.types import Provider 
from libcloud.compute.providers import get_driver 

auth_username = 'demo' 
auth_password = 'password' 
auth_url = 'http://192.168.43.18:5000' 
project_name = 'demo' 
region_name = 'RegionOne' 

provider = get_driver(Provider.OPENSTACK) 
conn = provider(auth_username, 
       auth_password, 
       ex_force_auth_url=auth_url, 
       ex_force_auth_version='3.x_password', 
       ex_tenant_name=project_name, 
       ex_force_service_region=region_name) 


#print "hello" 
images = conn.list_images() 
for image in images: 
print(image) 

使用v3的例子并不多。租户通常会与2.0关联，因此我不确定是否需要ex_tenant_name选项。

梯形版本：

https://developer.openstack.org/api-ref/identity/v3/

更多关于libcloud信息：

https://libcloud.readthedocs.io/en/latest/compute/drivers/openstack.html#connecting-to-the-openstack-installation

此外，你可以看到，如果重点是使用V2.0：

curl http://192.168.43.18:5000/v2.0 

如果是，那么我会以为像这样的工作：

from libcloud.compute.types import Provider 
from libcloud.compute.providers import get_driver 

auth_username = 'demo' 
auth_password = 'password' 
auth_url = 'http://192.168.43.18:5000' 
project_name = 'demo' 
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_region=region_name) 


#print "hello" 
images = conn.list_images() 
for image in images: 
    print(image) 

如果仍不能正常工作，请确认您使用的是公共梯形端点。根据您的版本，您可能会收到不同级别的信息：

openstack endpoint list --long 

或

openstack endpoint list