Python 我在AWS Lambda上部署应用程序时出错

我正在尝试在AWS lambda上运行flask api，使用

serverless framework

进行部署

当我使用

sls wsgi serve

时，我的应用程序在本地运行良好，但当我部署到AWS Lambda时，会出现错误（

502坏网关

）：

021-03-12T16:26:21.213+01:00    START RequestId: deedf3d6-eb1e-4f02-ac0c-47428c5bd553 Version: $LATEST

2021-03-12T16:26:21.216+01:00   module initialization error: Unable to import app.app

2021-03-12T16:26:21.331+01:00   END RequestId: deedf3b6-eb1e-4f02-ac0c-47428c5bd553

2021-03-12T16:26:21.331+01:00   REPORT RequestId: deedf3b6-eb1e-4f02-ac0c-47428c5bd553 Duration: 115.30 ms Billed Duration: 116 ms Memory Size: 1024 MB Max Memory Used: 28 MB

2021-03-12T16:26:21.331+01:00   module initialization error Unable to import app.app

2021-03-12T16:26:22.072+01:00   Traceback (most recent call last):

2021-03-12T16:26:22.072+01:00   File "/var/task/wsgi_handler.py", line 44, in import_app

2021-03-12T16:26:22.072+01:00   wsgi_module = importlib.import_module(wsgi_fqn_parts[-1])

2021-03-12T16:26:22.072+01:00   File "/var/lang/lib/python3.6/importlib/__init__.py", line 126, in import_module

2021-03-12T16:26:22.072+01:00   return _bootstrap._gcd_import(name[level:], package, level)

2021-03-12T16:26:22.072+01:00   File "<frozen importlib._bootstrap>", line 994, in _gcd_import

2021-03-12T16:26:22.072+01:00

Copy
File "<frozen importlib._bootstrap>", line 971, in _find_and_load
File "<frozen importlib._bootstrap>", line 971, in _find_and_load

2021-03-12T16:26:22.072+01:00   File "<frozen importlib._bootstrap>", line 955, in _find_and_load_unlocked

2021-03-12T16:26:22.072+01:00   File "<frozen importlib._bootstrap>", line 665, in _load_unlocked

2021-03-12T16:26:22.072+01:00   File "<frozen importlib._bootstrap_external>", line 678, in exec_module

2021-03-12T16:26:22.072+01:00   File "<frozen importlib._bootstrap>", line 219, in _call_with_frames_removed

2021-03-12T16:26:22.072+01:00   File "/var/task/app.py", line 10, in <module>

2021-03-12T16:26:22.072+01:00   from common.helpers import *

2021-03-12T16:26:22.072+01:00   File "/var/task/common/helpers.py", line 1, in <module>

2021-03-12T16:26:22.072+01:00   from common.db import db

2021-03-12T16:26:22.072+01:00   File "/var/task/common/db.py", line 1, in <module>

2021-03-12T16:26:22.072+01:00   from flask_pymongo import pymongo

2021-03-12T16:26:22.072+01:00   ModuleNotFoundError: No module named 'flask_pymongo'

requirements.txt

：

Werkzeug==0.16.1
Flask_PyMongo==2.3.0
Flask==1.1.1
Flask_Limiter==1.3.1
Flask_JWT_Extended==3.22.0
pymongo==3.10.1
pymongo[tls,srv]
dnspython

我的

serverless.yml

service : my-flask-app
provider:
  name: aws
  runtime: python3.6
  stage: dev
  region: us-east-1
plugins:
  - serverless-wsgi
  - serverless-python-requirements
custom:
  wsgi:
    app: app.app
    packRequirements: false
    pythonBin: python3
  pythonRequirements:
    dockerizePip: non-linux
    dockerFile: ./Dockerfile
package:
  exclude:
    - node_modules/**
    - venv/**
functions:
  app:
    handler: wsgi_handler.handler
    events:
      - http: ANY /
      - http: 'ANY {proxy+}'

---

有什么建议吗？

我认为您的

Dockerfile

不正确，您没有复制

requirements.txt

让pip为您安装软件包，因此依赖项没有打包。应该是这样的

FROM lambci/lambda:build-python3.6
COPY requirements.txt requirements.txt
RUN pip3 --no-cache-dir install -r requirements.txt

您的

Dockerfile

出现以下错误：

步骤2/2：运行pip3——无缓存目录安装-r requirements.txt
--->在1cda237064f0中运行
错误：无法打开需求文件：[Errno 2]没有这样的文件或目录：“requirements.txt”

我不确定您在部署应用程序时是否在构建日志中注意到这一点

还有一件事，假设您不使用任何其他变体，则不应将

requirements.txt

直接包含在

Dockerfile

中

python要求：
dockerizePip：非linux
dockerFile:./dockerFile

Dockerfile

FROM lambci/lambda:build-python3.6
# Install your dependencies in case you want to install any
#RUN yum -y install myfavourite-pacakge

此配置将采用

Dockerfile

并将

requirements.txt

添加到其中

FROM lambci/lambda:build-python3.6
# Install your dependencies in case you want to install any
#RUN yum -y install myfavourite-pacakge