AWS linux: ansible 2.9.7 使用 ec2.py 和 python 3.7 得到：ImportError: No module named boto, boto do installed

Question

我安裝了 python 3.7

 python --version
Python 3.7.6

我也安裝了 python 2.7 但我不想使用它
所以我設置：
設置別名 python=python3

ansible：

ansible --version
ansible 2.9.7
  config file = /etc/ansible/ansible.cfg
  configured module search path = ['/home/ec2-user/.ansible/plugins/modules', '/usr/share/ansible/plugins/modules']
  ansible python module location = /home/ec2-user/.local/lib/python3.7/site-packages/ansible
  executable location = /home/ec2-user/.local/bin/ansible
  python version = 3.7.6 (default, Feb 26 2020, 20:54:15) [GCC 7.3.1 20180712 (Red Hat 7.3.1-6)]

在 /etc/ansible/hosts 我從這里設置 ec2.py ：
https://raw.githubusercontent.com/ansible/ansible/stable-2.9/contrib/inventory/ec2.py
但是當我運行時：

ansible localhost -m ping 

我越來越：

[WARNING]:  * Failed to parse /etc/ansible/hosts with script plugin: Inventory script (/etc/ansible/hosts) had an execution error: Traceback (most recent call last):   File "/etc/ansible/hosts", line 164, in <module>     import boto
ImportError: No module named boto
[WARNING]:  * Failed to parse /etc/ansible/hosts with yaml plugin: Syntax Error while loading YAML.   expected '<document start>', but found '<scalar>'  The error appears to be in '/etc/ansible/hosts': line 12, column 31, but may be
elsewhere in the file depending on the exact syntax problem.  The offending line appears to be:  variables needed for Boto have already been set:     export AWS_ACCESS_KEY_ID='AK123'                               ^ here
[WARNING]:  * Failed to parse /etc/ansible/hosts with ini plugin: /etc/ansible/hosts:3: Error parsing host definition ''''': No closing quotation
[WARNING]: Unable to parse /etc/ansible/hosts as an inventory source
[WARNING]: No inventory was parsed, only implicit localhost is available

PLAY [Ansible Ad-Hoc] ***********************************************************************************************************************************************************************************************************************

TASK [ping] *********************************************************************************************************************************************************************************************************************************
Saturday 02 May 2020  08:36:13 +0000 (0:00:00.089)       0:00:00.089 **********
ok: [localhost]

PLAY RECAP **********************************************************************************************************************************************************************************************************************************
localhost                  : ok=1    changed=0    unreachable=0    failed=0    skipped=0    rescued=0    ignored=0

Saturday 02 May 2020  08:36:14 +0000 (0:00:00.290)       0:00:00.380 **********
===============================================================================

boto and boto3 are installed in my server 

    pip3 install boto
    Defaulting to user installation because normal site-packages is not writeable
    Requirement already satisfied: boto in ./.local/lib/python3.7/site-packages (2.49.0)

pip3 install boto3
Defaulting to user installation because normal site-packages is not writeable
Requirement already satisfied: boto3 in ./.local/lib/python3.7/site-packages (1.13.0)
Requirement already satisfied: s3transfer<0.4.0,>=0.3.0 in ./.local/lib/python3.7/site-packages (from boto3) (0.3.3)
Requirement already satisfied: botocore<1.17.0,>=1.16.0 in ./.local/lib/python3.7/site-packages (from boto3) (1.16.0)
Requirement already satisfied: jmespath<1.0.0,>=0.7.1 in ./.local/lib/python3.7/site-packages (from boto3) (0.9.5)
Requirement already satisfied: docutils<0.16,>=0.10 in ./.local/lib/python3.7/site-packages (from botocore<1.17.0,>=1.16.0->boto3) (0.15.2)
Requirement already satisfied: urllib3<1.26,>=1.20; python_version != "3.4" in ./.local/lib/python3.7/site-packages (from botocore<1.17.0,>=1.16.0->boto3) (1.25.9)
Requirement already satisfied: python-dateutil<3.0.0,>=2.1 in ./.local/lib/python3.7/site-packages (from botocore<1.17.0,>=1.16.0->boto3) (2.8.1)
Requirement already satisfied: six>=1.5 in ./.local/lib/python3.7/site-packages (from python-dateutil<3.0.0,>=2.1->botocore<1.17.0,>=1.16.0->boto3) (1.14.0)

Answer 1

讓我們從你開始的地方開始（我的系統上的版本會有點不同，但結果會是一樣的）。

您已安裝 python 2.7

$ which python
/usr/bin/python
$ python --version
Python 2.7.17

您的清單腳本可以使用 shebang 執行： #!/usr/bin/env python 。 目前這給出了：

$ /usr/bin/env python --version
Python 2.7.17

現在，您還安裝了 python3

$ which python3
/usr/bin/python3
$ python3 --version
Python 3.6.9

由於您更喜歡使用python3 ，因此您創建一個別名，以便python命令行指向您的首選版本

$ alias python=python3
$ python --version
Python 3.6.9

您現在認為對python的任何調用都將直接指向python3 ...除非在使用env時這絕對不是真的

$ /usr/bin/env python --version
Python 2.7.17

結論：您需要將庫存腳本 sheebang 行更改為以下之一：

#!/usr/bin/env python3
#!/usr/bin/python3

Answer 2

它看起來像一個安裝問題。

  configured module search path = ['/home/ec2-user/.ansible/plugins/modules', '/usr/share/ansible/plugins/modules']
  ansible python module location = /home/ec2-user/.local/lib/python3.7/site-packages/ansible
  executable location = /home/ec2-user/.local/bin/ansible

Ansible python 模塊是 /home/ec2-user/.local/lib/python3.7 這是 in.local

嘗試which python3使用該路徑運行命令ansible localhost -m ping -e 'ansible_python_interpreter=<path goes here>