未找到AWS lambda图像环境变量

Question

我使用容器映像创建AWS。但是，没有找到YAML中定义的环境变量.

如何创建容器映像

Hello World Example

• Update

1. 使用SAM作为支架，选择AWS Quick Start Templates >template.yaml和环境ECR
   1. 使用ECR容器图像

   创建lambda函数。

这是我试过的YAML

AWSTemplateFormatVersion: "2010-09-09"
Transform: AWS::Serverless-2016-10-31
Description: >
  python3.9

  Sample SAM Template for sam_hello_world

# More info about Globals: https://github.com/awslabs/serverless-application-model/blob/master/docs/globals.rst
Globals:
  Function:
    Timeout: 3
    Environment:
      Variables:
        BUCKET_NAME: "somes3bucketname"

Resources:
  HelloWorldFunction:
    Type: AWS::Serverless::Function # More info about Function Resource: https://github.com/awslabs/serverless-application-model/blob/master/versions/2016-10-31.md#awsserverlessfunction
    Properties:
      PackageType: Image
      Architectures:
        - x86_64
    Metadata:
      Dockerfile: Dockerfile
      DockerContext: ./hello_world
      DockerTag: python3.9-v1

AWSTemplateFormatVersion: "2010-09-09"
Transform: AWS::Serverless-2016-10-31
Description: >
  python3.9

  Sample SAM Template for sam_hello_world

# More info about Globals: https://github.com/awslabs/serverless-application-model/blob/master/docs/globals.rst
Globals:
  Function:
    Timeout: 3

Resources:
  HelloWorldFunction:
    Type: AWS::Serverless::Function # More info about Function Resource: https://github.com/awslabs/serverless-application-model/blob/master/versions/2016-10-31.md#awsserverlessfunction
    Properties:
      PackageType: Image
      Architectures:
        - x86_64
      Environment:
        Variables:
          BUCKET_NAME: "somes3bucketname"
    Metadata:
      Dockerfile: Dockerfile
      DockerContext: ./hello_world
      DockerTag: python3.9-v1

我的app.py

import io
import json
import os

def lambda_handler(event, context):

    print(os.environ)
    print(os.environ["BUCKET_NAME"])
    return {"statusCode": 200}

但是，这将引发键错误，因为os.environ找不到环境变量。

{
  "errorMessage": "'BUCKET_NAME'",
  "errorType": "KeyError",
  "requestId": "xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx",
  "stackTrace": [
    "  File \"/var/task/app.py\", line 32, in lambda_handler\n    os.environ[\"BUCKET_NAME\"],\n",
    "  File \"/var/lang/lib/python3.9/os.py\", line 679, in __getitem__\n    raise KeyError(key) from None\n"
  ]
}

Answer 1

我怀疑我从3开始的步骤是错误的。

基本上，在执行sam build时，它会构建容器映像，但是环境变量不会添加到映像本身。

只有在执行template.yaml时才会考虑到sam deploy。