无法使用libcloud GCE驱动程序进行身份验证

Question

我正在尝试使用libcloud (1.3.0)通过以下代码连接到我的GCE项目：

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

USER_ID = "nnnnnnnn@cloudservices.gserviceaccount.com"
KEYFILE = "./xxxxxxx.json"
PROJECT = "project1"

cls = get_driver(Provider.GCE)
driver = cls(USER_ID, KEYFILE, project = PROJECT)

在PyCrypto中使用AttributeError (我运行的是2.6.1版)就会失败：

Traceback (most recent call last):
  File "g.py", line 9, in <module>
    driver = cls(USER_ID, KEYFILE, project = PROJECT)
  File "/usr/lib/python2.7/site-packages/libcloud/compute/drivers/gce.py", line 1348, in __init__
    super(GCENodeDriver, self).__init__(user_id, key, **kwargs)
  File "/usr/lib/python2.7/site-packages/libcloud/common/base.py", line 1179, in __init__
    self.connection = self.connectionCls(*args, **conn_kwargs)
  File "/usr/lib/python2.7/site-packages/libcloud/compute/drivers/gce.py", line 98, in __init__
    credential_file=credential_file, **kwargs)
  File "/usr/lib/python2.7/site-packages/libcloud/common/google.py", line 765, in __init__
    user_id, key, auth_type, credential_file, scopes, **kwargs)
  File "/usr/lib/python2.7/site-packages/libcloud/common/google.py", line 660, in __init__
    self.token = self.oauth2_conn.get_new_token()
  File "/usr/lib/python2.7/site-packages/libcloud/common/google.py", line 530, in get_new_token
    signature = base64.urlsafe_b64encode(signer.sign(hash_func))
  File "/usr/lib/python2.7/site-packages/Crypto/Signature/PKCS1_v1_5.py", line 110, in sign
    em = EMSA_PKCS1_V1_5_ENCODE(mhash, k)
  File "/usr/lib/python2.7/site-packages/Crypto/Signature/PKCS1_v1_5.py", line 211, in EMSA_PKCS1_V1_5_ENCODE
    digestAlgo  = DerSequence([hash.oid, DerNull().encode()])
AttributeError: oid

我已经按照libcloud GCE驱动程序页面上关于设置服务帐户、下载JSON文件等的所有说明进行了操作，所以我认为我正在执行正确的步骤，但是我无法解决这个问题。

Answer 1

我刚刚在Python2.7.12和PyCrypto 2.6.1上进行了测试，在libcloud 1.3.0上没有看到任何问题。查看hasher，我怀疑这是您的服务帐户配置的问题。

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

USER_ID = "559xxxxxx-compute@developer.gserviceaccount.com"
KEYFILE = "./libcloud-test-xxx.json"
PROJECT = "libcloud-test"

cls = get_driver(Provider.GCE)
driver = cls(USER_ID, KEYFILE, project = PROJECT)
print(driver.auth_type)  # should be SA
print(driver.list_nodes())

在API管理器中，我进入Credentials，然后选择"Create Credentials“-> "Service Account Key”。对于Service Account，我选择了"Compute Engine default service account“和JSON格式。

计算引擎默认服务帐户

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在凭据管理器中，服务帐户如下所示

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