python - 尽管 gce.py 有效，但 Ansible 中的 GCE 模块找不到 apache-libcloud

Question

我用 pip 安装了 ansible、a​​pache-libcloud。此外，我可以将 gcloud cli 和 ansible 作品用于任何与 gce 无关的剧本。

在ansible playbook中使用gce模块作为任务创建实例时，出现如下错误:

TASK: [Launch instances] ****************************************************** 
<127.0.0.1> REMOTE_MODULE gce instance_names=mm2 machine_type=f1-micro image=ubuntu-1204-precise-v20150625 zone=europe-west1-d service_account_email= pem_file=../pkey.pem project_id=fancystuff-11
<127.0.0.1> EXEC ['/bin/sh', '-c', 'mkdir -p $HOME/.ansible/tmp/ansible-tmp-1437669562.03-233461447935889 && chmod a+rx $HOME/.ansible/tmp/ansible-tmp-1437669562.03-233461447935889 && echo $HOME/.ansible/tmp/ansible-tmp-1437669562.03-233461447935889']
<127.0.0.1> PUT /var/folders/v4/ll0_f8lj7yl7yghb645h95q9ckfc19/T/tmpyDoPt9 TO /Users/d046179/.ansible/tmp/ansible-tmp-1437669562.03-233461447935889/gce
<127.0.0.1> EXEC ['/bin/sh', '-c', u'LANG=en_US.UTF-8 LC_CTYPE=en_US.UTF-8 /usr/bin/python /Users/d046179/.ansible/tmp/ansible-tmp-1437669562.03-233461447935889/gce; rm -rf /Users/d046179/.ansible/tmp/ansible-tmp-1437669562.03-233461447935889/ >/dev/null 2>&1']
failed: [localhost -> 127.0.0.1] => {"failed": true, "parsed": false}
failed=True msg='libcloud with GCE support (0.13.3+) required for this module'


FATAL: all hosts have already failed -- aborting

还有我写的playbook的site.yml:

 name: Create a sandbox instance
  hosts: localhost
  vars:
    names: mm2
    machine_type: f1-micro
    image: ubuntu-1204-precise-v20150625
    zone: europe-west1-d
    service_account_email: xxx@developer.gserviceaccount.com
    pem_file: ../pkey.pem
    project_id: fancystuff-11
  tasks:
    - name: Launch instances
      local_action: gce instance_names={{names}} machine_type={{machine_type}}
                    image={{image}} zone={{zone}} service_account_email={{ service_account_email }}
                    pem_file={{ pem_file }} project_id={{ project_id }}
      register: gce

gce 云模块失败并显示错误消息“此模块需要具有 GCE 支持的 ibcloud (0.13.3+)”。但是，从 ansible github repo 运行 gce.py 是可行的。 python 脚本找到 apache-libcloud 库并打印一个包含所有正在运行的实例的 json。此外，pip install apache-libcloud 声明它已正确安装。

我是否缺少任何指向 python 库 (PYTHONPATH) 的环境变量？

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更新 1:

我在 gce 任务之前包含了以下任务:

- name: install libcloud
  pip: name=apache-libcloud

这也不会影响行为，也不会阻止任何错误消息。

---

更新 2:

我添加了以下任务来检查可用的 PYTHONPATH:

- name: Getting PYTHONPATH
  local_action: shell python -c 'import sys; print(":".join(sys.path))'
  register: pythonpath
- debug:  
    msg: "PYTHONPATH: {{ pythonpath.stdout }}"

返回以下内容:

PYTHONPATH: :/usr/local/lib/python2.7/site-packages/setuptools-17.1.1-py2.7.egg:/usr/local/lib/python2.7/site-packages/pip-7.0.3-py2.7.egg:/usr/local/lib/python2.7/site-packages:/usr/local/Cellar/python/2.7.10/Frameworks/Python.framework/Versions/2.7/lib/python27.zip:/usr/local/Cellar/python/2.7.10/Frameworks/Python.framework/Versions/2.7/lib/python2.7:/usr/local/Cellar/python/2.7.10/Frameworks/Python.framework/Versions/2.7/lib/python2.7/plat-darwin:/usr/local/Cellar/python/2.7.10/Frameworks/Python.framework/Versions/2.7/lib/python2.7/plat-mac:/usr/local/Cellar/python/2.7.10/Frameworks/Python.framework/Versions/2.7/lib/python2.7/plat-mac/lib-scriptpackages:/usr/local/Cellar/python/2.7.10/Frameworks/Python.framework/Versions/2.7/lib/python2.7/lib-tk:/usr/local/Cellar/python/2.7.10/Frameworks/Python.framework/Versions/2.7/lib/python2.7/lib-old:/usr/local/Cellar/python/2.7.10/Frameworks/Python.framework/Versions/2.7/lib/python2.7/lib-dynload:/usr/local/lib/python2.7/site-packages:/Library/Python/2.7/site-packages

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更新 3:

我引入了自己的 test.py 脚本作为执行与 gce ansible 模块相同的 apache-libcloud 导入的任务。脚本导入就好了!!!

Answer 1

设置 PYTHONPATH 解决了这个问题。例如:

$ export PYTHONPATH=/usr/local/lib/python2.7/site-packages/