升级到Python 3.6后，无法在启动时启动cloud-init

时间：2017-09-20 17:12:28

标签： python python-3.x ubuntu cloud-init

我在新的云服务器（Ubuntu 16.04）上安装了Python 3.6而不是默认的3.5版本。重新启动服务器后，我发现它在启动时无法执行cloud-init，并在syslog中出现以下错误。

Sep 20 16:16:14 cloud-init[1310]: Traceback (most recent call last):
Sep 20 16:16:14 cloud-init[1310]:   File "/usr/bin/cloud-init", line 9, in <module>
Sep 20 16:16:14 cloud-init[1310]:     load_entry_point('cloud-init==0.7.9', 'console_scripts', 'cloud-init')()
Sep 20 16:16:14 cloud-init[1310]:   File "/usr/local/lib/python3.6/dist-packages/pkg_resources/__init__.py", line 570, in load_entry_point
Sep 20 16:16:14 cloud-init[1310]:     return get_distribution(dist).load_entry_point(group, name)
Sep 20 16:16:14 cloud-init[1310]:   File "/usr/local/lib/python3.6/dist-packages/pkg_resources/__init__.py", line 2751, in load_entry_point
Sep 20 16:16:14 cloud-init[1310]:     return ep.load()
Sep 20 16:16:14 cloud-init[1310]:   File "/usr/local/lib/python3.6/dist-packages/pkg_resources/__init__.py", line 2405, in load
Sep 20 16:16:14 cloud-init[1310]:     return self.resolve()
Sep 20 16:16:14 cloud-init[1310]:   File "/usr/local/lib/python3.6/dist-packages/pkg_resources/__init__.py", line 2411, in resolve
Sep 20 16:16:14 cloud-init[1310]:     module = __import__(self.module_name, fromlist=['__name__'], level=0)
Sep 20 16:16:14 cloud-init[1310]:   File "/usr/lib/python3/dist-packages/cloudinit/cmd/main.py", line 27, in <module>
Sep 20 16:16:14 cloud-init[1310]:     from cloudinit import stages
Sep 20 16:16:14 cloud-init[1310]:   File "/usr/lib/python3/dist-packages/cloudinit/stages.py", line 21, in <module>
Sep 20 16:16:14 cloud-init[1310]:     from cloudinit.handlers import cloud_config as cc_part
Sep 20 16:16:14 cloud-init[1310]:   File "/usr/lib/python3/dist-packages/cloudinit/handlers/cloud_config.py", line 11, in <module>
Sep 20 16:16:14 cloud-init[1310]:     import jsonpatch
Sep 20 16:16:14 cloud-init[1310]:   File "/usr/lib/python3/dist-packages/jsonpatch.py", line 114, in <module>
Sep 20 16:16:14 cloud-init[1310]:     json.load = get_loadjson()
Sep 20 16:16:14 cloud-init[1310]:   File "/usr/lib/python3/dist-packages/jsonpatch.py", line 108, in get_loadjson
Sep 20 16:16:14 cloud-init[1310]:     argspec = inspect.getargspec(json.load)
Sep 20 16:16:14 cloud-init[1310]:   File "/usr/lib/python3.6/inspect.py", line 1072, in getargspec
Sep 20 16:16:14 cloud-init[1310]:     raise ValueError("Function has keyword-only parameters or annotations"
Sep 20 16:16:14 cloud-init[1310]: ValueError: Function has keyword-only parameters or annotations, use getfullargspec() API which can support them
Sep 20 16:16:14 cloud-init[1310]: Error in sys.excepthook:
Sep 20 16:16:14 cloud-init[1310]: Traceback (most recent call last):
Sep 20 16:16:14 cloud-init[1310]:   File "/usr/lib/python3/dist-packages/apport_python_hook.py", line 63, in apport_excepthook
Sep 20 16:16:14 cloud-init[1310]:     from apport.fileutils import likely_packaged, get_recent_crashes
Sep 20 16:16:14 cloud-init[1310]:   File "/usr/lib/python3/dist-packages/apport/__init__.py", line 5, in <module>
Sep 20 16:16:14 cloud-init[1310]:     from apport.report import Report
Sep 20 16:16:14 cloud-init[1310]:   File "/usr/lib/python3/dist-packages/apport/report.py", line 30, in <module>
Sep 20 16:16:14 cloud-init[1310]:     import apport.fileutils
Sep 20 16:16:14 cloud-init[1310]:   File "/usr/lib/python3/dist-packages/apport/fileutils.py", line 23, in <module>
Sep 20 16:16:14 cloud-init[1310]:     from apport.packaging_impl import impl as packaging
Sep 20 16:16:14 cloud-init[1310]:   File "/usr/lib/python3/dist-packages/apport/packaging_impl.py", line 23, in <module>
Sep 20 16:16:14 cloud-init[1310]:     import apt
Sep 20 16:16:14 cloud-init[1310]:   File "/usr/lib/python3/dist-packages/apt/__init__.py", line 23, in <module>
Sep 20 16:16:14 cloud-init[1310]:     import apt_pkg
Sep 20 16:16:14 cloud-init[1310]: ModuleNotFoundError: No module named 'apt_pkg'
Sep 20 16:16:14 cloud-init[1310]: Original exception was:
Sep 20 16:16:14 cloud-init[1310]: Traceback (most recent call last):
Sep 20 16:16:14 cloud-init[1310]:   File "/usr/bin/cloud-init", line 9, in <module>
Sep 20 16:16:14 cloud-init[1310]:     load_entry_point('cloud-init==0.7.9', 'console_scripts', 'cloud-init')()
Sep 20 16:16:14 cloud-init[1310]:   File "/usr/local/lib/python3.6/dist-packages/pkg_resources/__init__.py", line 570, in load_entry_point
Sep 20 16:16:14 cloud-init[1310]:     return get_distribution(dist).load_entry_point(group, name)
Sep 20 16:16:14 cloud-init[1310]:   File "/usr/local/lib/python3.6/dist-packages/pkg_resources/__init__.py", line 2751, in load_entry_point
Sep 20 16:16:14 cloud-init[1310]:     return ep.load()
Sep 20 16:16:14 cloud-init[1310]:   File "/usr/local/lib/python3.6/dist-packages/pkg_resources/__init__.py", line 2405, in load
Sep 20 16:16:14 cloud-init[1310]:     return self.resolve()
Sep 20 16:16:14 cloud-init[1310]:   File "/usr/local/lib/python3.6/dist-packages/pkg_resources/__init__.py", line 2411, in resolve
Sep 20 16:16:14 cloud-init[1310]:     module = __import__(self.module_name, fromlist=['__name__'], level=0)
Sep 20 16:16:14 cloud-init[1310]:   File "/usr/lib/python3/dist-packages/cloudinit/cmd/main.py", line 27, in <module>
Sep 20 16:16:14 cloud-init[1310]:     from cloudinit import stages
Sep 20 16:16:14 cloud-init[1310]:   File "/usr/lib/python3/dist-packages/cloudinit/stages.py", line 21, in <module>
Sep 20 16:16:14 cloud-init[1310]:     from cloudinit.handlers import cloud_config as cc_part
Sep 20 16:16:14 cloud-init[1310]:   File "/usr/lib/python3/dist-packages/cloudinit/handlers/cloud_config.py", line 11, in <module>
Sep 20 16:16:14 cloud-init[1310]:     import jsonpatch
Sep 20 16:16:14 cloud-init[1310]:   File "/usr/lib/python3/dist-packages/jsonpatch.py", line 114, in <module>
Sep 20 16:16:14 cloud-init[1310]:     json.load = get_loadjson()
Sep 20 16:16:14 cloud-init[1310]:   File "/usr/lib/python3/dist-packages/jsonpatch.py", line 108, in get_loadjson
Sep 20 16:16:14 cloud-init[1310]:     argspec = inspect.getargspec(json.load)
Sep 20 16:16:14 cloud-init[1310]:   File "/usr/lib/python3.6/inspect.py", line 1072, in getargspec
Sep 20 16:16:14 cloud-init[1310]:     raise ValueError("Function has keyword-only parameters or annotations"
Sep 20 16:16:14 cloud-init[1310]: ValueError: Function has keyword-only parameters or annotations, use getfullargspec() API which can support them
Sep 20 16:16:14 systemd[1]: Started MySQL Community Server.
Sep 20 16:16:14 systemd[1]: cloud-config.service: Main process exited, code=exited, status=1/FAILURE
Sep 20 16:16:14 systemd[1]: Failed to start Apply the settings specified in cloud-config.
Sep 20 16:16:14 systemd[1]: cloud-config.service: Unit entered failed state.
Sep 20 16:16:14 systemd[1]: cloud-config.service: Failed with result 'exit-code'.

显然存在两个问题：

ModuleNotFoundError: No module named 'apt_pkg'

ValueError: Function has keyword-only parameters or annotations, use getfullargspec() API which can support them

所以我运行了apt-get install python3-apt，但是已经安装了软件包。然后我跑了apt-get install python3-jsonpatch，它已成功完成。不幸的是，问题并没有解决。

1 个答案:

答案 0 :(得分：2)

最后，我通过使用jsonpatch升级pip包来解决了这个问题。

$ pip3 install --upgrade jsonpatch

这是旧版jsonpatch的已知错误（兼容性问题）（请参阅https://github.com/stefankoegl/python-json-patch/issues/56）。我必须按pip而不是apt-get升级软件包。这可以解决这两个错误。

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