IoT Azure Edge 上下文版本冲突：pyOpenSSL

Question

我正在关注 Azure IoT Edge 快速入门 教程和 Configure the IoT Edge runtime 部分。

当我使用 IoT Edge 设备连接字符串配置运行时时

iotedgectl setup --connection-string "{device connection string}" --nopass

（我更改了连接字符串）我得到以下结果

Traceback (most recent call last):
  File "/usr/local/bin/iotedgectl", line 11, in <module>
    sys.exit(coremain())
  File "/Library/Python/2.7/site-packages/edgectl/__init__.py", line 23, in coremain
    version = pkg_resources.require(PACKAGE_NAME)[0].version
  File "/System/Library/Frameworks/Python.framework/Versions/2.7/Extras/lib/python/pkg_resources/__init__.py", line 959, in require
    needed = self.resolve(parse_requirements(requirements))
  File "/System/Library/Frameworks/Python.framework/Versions/2.7/Extras/lib/python/pkg_resources/__init__.py", line 851, in resolve
    raise VersionConflict(dist, req).with_context(dependent_req)
pkg_resources.ContextualVersionConflict: (pyOpenSSL 0.13.1 (/System/Library/Frameworks/Python.framework/Versions/2.7/Extras/lib/python), Requirement.parse('pyOpenSSL>=0.14'), set(['docker']))

这不允许我继续执行命令

iotedgectl start

我查看了文件init.py从第857-859行有：

        # Register the new requirements needed by req
        for new_requirement in new_requirements:
            required_by[new_requirement].add(req.project_name)

第 848 - 851 行

 if dist not in req:
                # Oops, the "best" so far conflicts with a dependency
                dependent_req = required_by[req]
                raise VersionConflict(dist, req).with_context(dependent_req)

第 959 行

needed = self.resolve(parse_requirements(requirements))

我需要在那里更改什么？或者需要配置什么？

Answer 1

从消息来看，pyOpenSSL太旧，需要0.14或更高版本。

Traceback (most recent call last):
  File "/usr/local/bin/iotedgectl", line 11, in <module>
    sys.exit(coremain())
  File "/Library/Python/2.7/site-packages/edgectl/__init__.py", line 23, in coremain
    version = pkg_resources.require(PACKAGE_NAME)[0].version
  File "/System/Library/Frameworks/Python.framework/Versions/2.7/Extras/lib/python/pkg_resources/__init__.py",
 line 959, in require
    needed = self.resolve(parse_requirements(requirements))
  File "/System/Library/Frameworks/Python.framework/Versions/2.7/Extras/lib/python/pkg_resources/__init__.py",
 line 851, in resolve
    raise VersionConflict(dist, req).with_context(dependent_req)
pkg_resources.ContextualVersionConflict: (pyOpenSSL 0.13.1 (/System/Library/Frameworks/Python.framework/Versions/2.7/Extras/lib/python),
 Requirement.parse('pyOpenSSL>=0.14'), set(['docker']))

您可以使用以下命令升级pyOpenSSL：

pip install --upgrade pyOpenSSL

如果问题无法解决，请随时告诉我。

Answer 2

在安装 iotedgectl 之前，您已经安装了较低版本的 pyOpenSSL，它不符合 iotedgectl 的版本要求，但先于与 iotedgectl 一起安装的较高版本的 pyOpenSSL。

您可以查看 this answer 以了解如何使 Python 首先引用更高版本的 pyOpenSSL。

另外，您似乎在 macOS 上工作。如果有，请参考Quickstart: Deploy your first IoT Edge module to a Linux or Mac device - preview, instead of Quickstart: Deploy your first IoT Edge module from the Azure portal to a Windows device - preview.

IoT Azure Edge 上下文版本冲突：pyOpenSSL

IoT Azure Edge ContextualVersionConflict: pyOpenSSL

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