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我正在尝试在 AWS 上部署 python 无服务器应用程序。

我遵循非常简单的教程，并执行以下步骤：

  1. 安装无服务器 npm install -g serverless
  2. 生成模板项目sls create --template aws-python3 --name sls-demo --path sls-demo

我的handler.py文件如下所示：

import json


def hello(event, context):
    body = {
        "message": "Go Serverless v1.0! Your function executed successfully!",
        "input": event
    }

    response = {
        "statusCode": 200,
        "body": json.dumps(body)
    }

    return response

我的serverless.yml配置文件如下所示：

service: sls-demo
frameworkVersion: '2'

provider:
  name: aws
  runtime: python3.8
  lambdaHashingVersion: 20201221
  region: eu-central-1

functions:
  hello:
    handler: handler.hello

我已经aws cli在我的机器上安装，使用 aws 凭据配置它，当我运行部署命令sls deploy时它成功完成。

我使用以下命令测试 lambda 函数，sls invoke --function hello结果成功返回：

{
    "statusCode": 200,
    "body": "{\"message\": \"Go Serverless v1.0! Your function executed successfully!\", \"input\": {}}"
}

现在我想在我的 lambda 函数中引入一些额外的依赖项，将其 dockerize 并使用serverless-python-requirements插件进行部署。

为此，我执行以下步骤：

  1. 创建虚拟环境python -m venv ./venv
  2. 激活虚拟环境source venv/bin/activate
  3. 安装numpy依赖pip install numpy
  4. 冻结python依赖项pip freeze > requirements.txt
  5. 安装 serverless-python-requirements 插件sls plugin install -n serverless-python-requirements

我更新的handler.py文件如下所示：

import json
import numpy


def hello(event, context):
    array = numpy.arange(15).reshape(3, 5)

    body = {
        "message": "Go Serverless v1.0! Your function executed successfully!",
        "input": event,
        "array": array
    }

    response = {
        "statusCode": 200,
        "body": json.dumps(body)
    }

    return response

我更新的serverless.yml配置文件如下所示：

service: sls-demo
frameworkVersion: '2'

provider:
  name: aws
  runtime: python3.8
  lambdaHashingVersion: 20201221
  region: eu-central-1

functions:
  hello:
    handler: handler.hello

plugins:
  - serverless-python-requirements

custom:
  pythonRequirements:
    dockerizePip: non-linux

在这些更改之后，当我运行部署命令sls deploy时，它会失败并出现以下错误：

Serverless: Recoverable error occurred (Inaccessible host: `sls-demo-dev-serverlessdeploymentbucket-xyz.s3.eu-central-1.amazonaws.com'. This service may not be available in the `eu-central-1' region.), sleeping for ~5 seconds. Try 1 of 4

我通过导出此标志为无服务器启用了调试日志，export SLS_DEBUG=*异常堆栈跟踪如下所示：

Serverless: Recoverable error occurred (UnknownEndpoint: Inaccessible host: `sls-demo-dev-serverlessdeploymentbucket-xyz.s3.eu-central-1.amazonaws.com'. This service may not be available in the `eu-central-1' region.
    at Request.ENOTFOUND_ERROR (/Users/macbook/.nvm/versions/node/v14.16.0/lib/node_modules/serverless/node_modules/aws-sdk/lib/event_listeners.js:507:46)
    at Request.callListeners (/Users/macbook/.nvm/versions/node/v14.16.0/lib/node_modules/serverless/node_modules/aws-sdk/lib/sequential_executor.js:106:20)
    at Request.emit (/Users/macbook/.nvm/versions/node/v14.16.0/lib/node_modules/serverless/node_modules/aws-sdk/lib/sequential_executor.js:78:10)
    at Request.emit (/Users/macbook/.nvm/versions/node/v14.16.0/lib/node_modules/serverless/node_modules/aws-sdk/lib/request.js:688:14)
    at ClientRequest.error (/Users/macbook/.nvm/versions/node/v14.16.0/lib/node_modules/serverless/node_modules/aws-sdk/lib/event_listeners.js:339:22)
    at ClientRequest.<anonymous> (/Users/macbook/.nvm/versions/node/v14.16.0/lib/node_modules/serverless/node_modules/aws-sdk/lib/http/node.js:96:19)
    at ClientRequest.emit (events.js:315:20)
    at ClientRequest.EventEmitter.emit (domain.js:467:12)
    at TLSSocket.socketErrorListener (_http_client.js:469:9)
    at TLSSocket.emit (events.js:315:20)
    at TLSSocket.EventEmitter.emit (domain.js:467:12)
    at emitErrorNT (internal/streams/destroy.js:106:8)
    at emitErrorCloseNT (internal/streams/destroy.js:74:3)
    at processTicksAndRejections (internal/process/task_queues.js:80:21)
----------------------------------------------------------------------------------------------------), sleeping for ~7 seconds. Try 1 of 4

当无服务器尝试将构建工件上传到 s3 存储桶时会发生此错误：

Serverless: Uploading service sls-demo.zip file to S3 (33.14 MB)...

我怀疑这个错误是由于文件太大而发生的，但我不知道如何解决这个问题，或者我错过了配置中的某些内容。

我尝试使用 aws cli 在提到的 s3 存储桶中上传大文件，它可以正常工作：

aws s3 cp large_file.zip s3://sls-demo-dev-serverlessdeploymentbucket-xyz/large_file.zip

我不知道如何解决此问题，并且我无法在互联网上找到有关此错误的任何答案。任何帮助表示赞赏。

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