尝试在AWS Lambda中运行Flask应用程序时出现错误 [英] I get errors when trying to run my flask app in AWS Lambda
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问题描述
我正在尝试使用 severless 在AWS Lambda上部署在本地运行良好的Flask应用程序.部署是好的，但是我不能使用aws lambda应用程序.我收到错误 502网关错误 消息:内部服务器错误.
I am trying to deploy a flask app that run very well locally to AWS Lambda using severless. The deployment is good but I can't use the aws lambda app . I get an error 502 Bad Gateway message: Internal server error.
我检查了日志，并在这里找到了以下内容:
I checked the logs and here what I found :
2021-03-12T01:49:27.685+01:00 Traceback (most recent call last):
2021-03-12T01:49:27.685+01:00 File "/var/task/wsgi_handler.py", line 44, in import_app
2021-03-12T01:49:27.685+01:00 wsgi_module = importlib.import_module(wsgi_fqn_parts[-1])
2021-03-12T01:49:27.685+01:00 File "/var/lang/lib/python3.8/importlib/__init__.py", line 127, in import_module
2021-03-12T01:49:27.685+01:00 return _bootstrap._gcd_import(name[level:], package, level)
2021-03-12T01:49:27.685+01:00 File "<frozen importlib._bootstrap>", line 1014, in _gcd_import
2021-03-12T01:49:27.685+01:00 File "<frozen importlib._bootstrap>", line 991, in _find_and_load
2021-03-12T01:49:27.685+01:00 File "<frozen importlib._bootstrap>", line 975, in _find_and_load_unlocked
2021-03-12T01:49:27.685+01:00 File "<frozen importlib._bootstrap>", line 671, in _load_unlocked
2021-03-12T01:49:27.685+01:00 File "<frozen importlib._bootstrap_external>", line 783, in exec_module
2021-03-12T01:49:27.685+01:00 File "<frozen importlib._bootstrap>", line 219, in _call_with_frames_removed
2021-03-12T01:49:27.685+01:00 File "/var/task/app.py", line 10, in <module>
2021-03-12T01:49:27.685+01:00 from common.helpers import *
2021-03-12T01:49:27.685+01:00 File "/var/task/common/helpers.py", line 1, in <module>
2021-03-12T01:49:27.685+01:00 from common.db import db
2021-03-12T01:49:27.685+01:00 File "/var/task/common/db.py", line 1, in <module>
2021-03-12T01:49:27.685+01:00 from flask_pymongo import pymongo
2021-03-12T01:49:27.685+01:00 ModuleNotFoundError: No module named 'flask_pymongo'
2021-03-12T01:49:27.686+01:00 [ERROR] Exception: Unable to import app.app Traceback (most recent call last): File "/var/lang/lib/python3.8/imp.py", line 234, in load_module return load_source(name, filename, file) File "/var/lang/lib/python3.8/imp.py", line 171, in load_source module = _load(spec) File "<frozen importlib._bootstrap>", line 702, in _load File "<frozen importlib._bootstrap>", line 671, in _load_unlocked File "<frozen importlib._bootstrap_external>", line 783, in exec_module File "<frozen importlib._bootstrap>", line 219, in _call_with_frames_removed File "/var/task/wsgi_handler.py", line 119, in <module> wsgi_app = import_app(config) File "/var/task/wsgi_handler.py", line 49, in import_app raise Exception("Unable to import {}".format(config["app"]))
2021-03-12T01:49:27.803+01:00 START RequestId: cd231555-23cb-4444-b6fe-36e2ce590dc7 Version: $LATEST
2021-03-12T01:49:29.040+01:00 Traceback (most recent call last):
2021-03-12T01:49:29.040+01:00 File "/var/task/wsgi_handler.py", line 44, in import_app
2021-03-12T01:49:29.040+01:00 wsgi_module = importlib.import_module(wsgi_fqn_parts[-1])
2021-03-12T01:49:29.040+01:00 File "/var/lang/lib/python3.8/importlib/__init__.py", line 127, in import_module
2021-03-12T01:49:29.040+01:00 return _bootstrap._gcd_import(name[level:], package, level)
2021-03-12T01:49:29.040+01:00 File "<frozen importlib._bootstrap>", line 1014, in _gcd_import
2021-03-12T01:49:29.040+01:00 File "<frozen importlib._bootstrap>", line 991, in _find_and_load
2021-03-12T01:49:29.040+01:00 File "<frozen importlib._bootstrap>", line 975, in _find_and_load_unlocked
2021-03-12T01:49:29.040+01:00 File "<frozen importlib._bootstrap>", line 671, in _load_unlocked
2021-03-12T01:49:29.040+01:00 File "<frozen importlib._bootstrap_external>", line 783, in exec_module
2021-03-12T01:49:29.040+01:00 File "<frozen importlib._bootstrap>", line 219, in _call_with_frames_removed
2021-03-12T01:49:29.040+01:00 File "/var/task/app.py", line 10, in <module>
2021-03-12T01:49:29.040+01:00 from common.helpers import *
2021-03-12T01:49:29.040+01:00 File "/var/task/common/helpers.py", line 1, in <module>
2021-03-12T01:49:29.040+01:00 from common.db import db
我不理解 ModuleNotFoundError:没有名为'flask_pymongo'的模块在本地使用该应用程序时，我没有此功能.无论如何，我都尝试安装它，但是仍然无法正常工作.
I don't understand ModuleNotFoundError: No module named 'flask_pymongo' When I use the app in local I don't have this. I've tried to install it anyway but it still doesn't work.
我的无服务器配置:
service: serverless-flask
plugins:
- serverless-python-requirements
- serverless-wsgi
custom:
wsgi:
# This is the file name and the app name of the application
# Where file name is app.py and Flask app name is app
# ie. app = Flask(__name__)
app: app.app
packRequirements: false
pythonRequirements:
dockerizePip: non-linux
provider:
name: aws
runtime: python3.8
stage: dev
region: us-east-1
functions:
app:
handler: wsgi.handler
events:
- http: ANY /
- http: 'ANY {proxy+}'
有什么建议吗?
推荐答案
您可以尝试打包&将模块安装在容器化的lambda环境中.
Can you try packaging & installing your module in a containerised lambda env.
有时打包在Windows中的模块将无法在其他操作系统上使用.
As sometimes modules packed in windows will not work on other os.
我在使用psycopg2时遇到了类似的问题，然后将其安装并打包在 lambci docker 中，工作正常.
I had a similar issue with psycopg2 then installed and packaged in lambci docker and everything was working fine.
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