根据华为云文档说明：
Python SDK使用还需要提前装好openstack的python模块，否则报openstack 模块不存在错误。
Python SDK提供GitHub和pip两种安装方式。
方式一：下载GitHub源码安装方式，如下：
将代码下载到您项目合适的位置，以pythonsdk作为您选择的位置举例，执行下面的命令完成源码下载和安装：
git clone https://github.com/huaweicloud/huaweicloud-sdk-python pythonsdk
cd pythonsdk
pip install -r requirements.txt
python setup.py install
方式二：使用pip安装，请执行以下命令：
pip install huaweicloud-sdk-python
当采用方式一时，如果只git clone了sdk就直接使用它里面的例子，在AK/SK认证的时候就会报：
openstack.exceptions.ConfigException: Cloud myhuaweicloud.com was not found.
我使用方式二，个人感觉sdk比较方便
认证方式中他包含有两种方式：
1.token认证
2.AK/SK认证
因为1方式需要传入账号密码等多个参数，所以采用第二种
认证例子test.py 如下：
#encoding=utf-8
from openstack import connection
projectId = "***"
cloud = "myhuaweicloud.com"
region= "***" # example: region = "cn-north-1"
AK = "***"
SK = "***"
conn = connection.Connection(
project_id=projectId,
cloud=cloud,
region=region,
ak = AK,
sk = SK)
def test_compute():
servers = conn.compute.servers(limit = 3)
for server in servers:
print server
if __name__ == "__main__":
test_compute()
来源于华为云的官方文档：https://support.huaweicloud.com/devg-sdk/sdk_02_0005.html
参数在里面有说明。
当我使用这个例子运行时它报错：
[root@localhost huaweicloud]# python test.py
Traceback (most recent call last):
File "test.py", line 26, in <module>
test_compute()
File "test.py", line 22, in test_compute
for server in servers:
File "/usr/lib/python2.7/site-packages/openstack/resource2.py", line 872, in list
params=query_params)
File "/usr/lib/python2.7/site-packages/keystoneauth1/session.py", line 1123, in get
return self.request(url, 'GET', **kwargs)
File "/usr/lib/python2.7/site-packages/openstack/session.py", line 66, in map_exceptions_wrapper
return func(*args, **kwargs)
File "/usr/lib/python2.7/site-packages/openstack/aksksession.py", line 308, in request
service_type=endpoint_filter.service_type)
File "/usr/lib/python2.7/site-packages/openstack/aksksession.py", line 444, in get_endpoint
base_url = self._get_endpoint_from_iamdata(service_type)
File "/usr/lib/python2.7/site-packages/openstack/aksksession.py", line 460, in _get_endpoint_from_iamdata
self.__iam_endpoint = self.__fetch_all_endpoint_service_project_level()
File "/usr/lib/python2.7/site-packages/openstack/aksksession.py", line 502, in __fetch_all_endpoint_service_project_level
endpoint_filter=identity_service.AdminService())
File "/usr/lib/python2.7/site-packages/openstack/session.py", line 66, in map_exceptions_wrapper
return func(*args, **kwargs)
File "/usr/lib/python2.7/site-packages/openstack/aksksession.py", line 398, in request
logger=_logger)
File "/usr/lib/python2.7/site-packages/keystoneauth1/session.py", line 466, in _http_log_request
if self._get_split_loggers(split_loggers):
File "/usr/lib/python2.7/site-packages/keystoneauth1/session.py", line 454, in _get_split_loggers
split_loggers = self._split_loggers
AttributeError: 'ASKSession' object has no attribute '_split_loggers'
Exception AttributeError: "'ASKSession' object has no attribute '_session'" in <bound method ASKSession.__del__ of <openstack.aksksession.ASKSession object at 0x7fce44772c50>> ignored
思考应该不是代码问题，因为代码是直接复制于官方的例子，工单询问华为云技术，说是环境或者参数问题，因为环境看文档只是说明要装好openstack模块，没有其他要求，所以认为是参数问题，之后核对完参数还是同样的报错。。。之后猜想可能是环境上还有特殊要求，因此在另一台机器上使用pip install huaweicloud-sdk-python命令尝试安装了一把，运行没有报错了。对比了两个环境，发现各个包版本都是一致的，最后仔细看了下报错：
File "/usr/lib/python2.7/site-packages/keystoneauth1/session.py", line 466, in _http_log_request
if self._get_split_loggers(split_loggers):
File "/usr/lib/python2.7/site-packages/keystoneauth1/session.py", line 454, in _get_split_loggers
它追踪到keystoneauth1这个东西有报错，然后使用
pip show keystoneauth1
命令查看发现能跑的哪个环境keystoneauth1版本是3.4.0，报错环境keystoneauth1版本是3.18.0
之后卸载掉keystoneauth1 3.18.0安装keystoneauth1 3.4.0后可以正常运行认证流程了，猜想keystoneauth1 3.18.0对这sdk不兼容吧。。。
之后的各种sdk调用都顺顺利利了
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