问题描述
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:
- 安装无服务器
npm install -g serverless
- 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
我已经在我的机器上安装了 aws cli
,使用 aws 凭据对其进行了配置,当我运行部署命令 sls deploy
时,它成功完成。
我使用以下命令 sls invoke --function hello
测试 lambda 函数,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,对其进行 dockerize 并使用 serverless-python-requirements
插件进行部署。
为此,我执行以下步骤:
- 创建虚拟环境
python -m venv ./venv
- 激活虚拟环境
source venv/bin/activate
- 安装 numpy 依赖
pip install numpy
- 冻结 python 依赖项
pip freeze > requirements.txt
- 安装 serverless-python-requirements 插件
sls plugin install -n serverless-python-requirements
我更新后的 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
我更新后的 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
进行这些更改后,当我运行部署命令 sls deploy
时,它失败并显示以下错误:
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 export SLS_DEBUG=*
为无服务器启用了调试日志,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过大导致的,但我不知道如何解决这个问题,或者我在配置中遗漏了什么。
我尝试使用 aws cli 在提到的 s3 存储桶中上传大文件,并且没有任何问题:
aws s3 cp large_file.zip s3://sls-demo-dev-serverlessdeploymentbucket-xyz/large_file.zip
我不知道如何解决这个问题,而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。
解决方法
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