Ansible cannot find required boto3 module - amazon-web-services

Question

I am having trouble to fix a seemingly simple issue. I am missing a plugin during execution of an ansible playbook from a git repository. It is trying to execute the Ansible ec2_group_info command from AWS boto3 plugin. The error is the following:
[WARNING]: Skipping plugin (/home/user/git-repo-name/plugins/filters/kms_filters.py) as it seems to
be invalid: No module named 'boto3'
failed: [localhost] (item=DEV) => {"ansible_loop_var": "item", "changed": false, "item":
"DEV", "msg": "boto3 required for this module"}
My ansible information using ansible --version inside of the repo folder locally looks like this:
ansible 2.9.6
config file = /home/user-name/repo-name/ansible.cfg
configured module search path = ['/home/user-name/repo-name/modules']
ansible python module location = /usr/lib/python3/dist-packages/ansible
executable location = /usr/bin/ansible
python version = 3.8.2 (default, Apr 27 2020, 15:53:34) [GCC 9.3.0]
Outside of the repo folder locally it looks like this:
ansible 2.9.6
config file = /etc/ansible/ansible.cfg
configured module search path = ['/home/user-name/.ansible/plugins/modules', '/usr/share/ansible/plugins/modules']
ansible python module location = /usr/lib/python3/dist-packages/ansible
executable location = /usr/bin/ansible
python version = 3.8.2 (default, Apr 27 2020, 15:53:34) [GCC 9.3.0]
Python 3 is installed as well as boto3 globally, and I can use boto3 properly using python3.
I have searched on many forum pages, but I could not find a satisfying solution to my issue ...
To me it seems like it does not search for all the possible installed plugin options globally but only restrained to the options of the repo...
It seems to be failing to find the module in this plugin kms_filters.py as well. The content of the file is the following:
import boto3
import base64
kms = boto3.client('kms', region_name='region-name')
def kms_decrypt(ciphertext):
return kms.decrypt(CiphertextBlob=base64.b64decode(ciphertext)).get('Plaintext')
def kms_encrypt(plaintext, key):
return base64.b64encode(kms.encrypt(KeyId=key,Plaintext=plaintext).get('CiphertextBlob'))
class FilterModule(object):
def filters(self):
return { 'kms_encrypt': kms_encrypt, 'kms_decrypt': kms_decrypt }
How would I need to configure it so that it can find the boto3 plugin? Where do I need to add any information that makes this possible??? If possible I would prefer if the plugin is available to be used within the repo configuration itself.

Answer 1

In this case, You might be having multiple python versions, My guess is your python3 soft link points to python3.6 .Please run ls -lrt python* in /usr/bin directory to identify the python3 version. It is likely that you installed boto3 for a different python version.
Suggest try running installation of boto3 using ansible pre_tasks. That way your boto3 will always be present.