[英]Error when creating items AWS Lambda to DynamoDB with python
[英]AWS DynamoDB Python Connection Error
無法在AWS Dynamodb上運行示例代碼。
我正在嘗試運行他們在該網站上提供的AWS示例python代碼。 這是我的python文件:
from __future__ import print_function # Python 2/3 compatibility
import boto3
dynamodb = boto3.resource('dynamodb', region_name='us-west-2', endpoint_url="http://localhost:8000")
table = dynamodb.create_table(
TableName='Movies',
KeySchema=[
{
'AttributeName': 'year',
'KeyType': 'HASH' #Partition key
},
{
'AttributeName': 'title',
'KeyType': 'RANGE' #Sort key
}
],
AttributeDefinitions=[
{
'AttributeName': 'year',
'AttributeType': 'N'
},
{
'AttributeName': 'title',
'AttributeType': 'S'
},
],
ProvisionedThroughput={
'ReadCapacityUnits': 10,
'WriteCapacityUnits': 10
}
)
print("Table status:", table.table_status)
然后,我在終端中運行python文件,並收到以下錯誤:
File "MoviesCreateTable.py", line 32, in <module>
'WriteCapacityUnits': 10
File "/home/name/.local/lib/python2.7/site-packages/boto3/resources/factory.py", line 520, in do_action
response = action(self, *args, **kwargs)
File "/home/name/.local/lib/python2.7/site-packages/boto3/resources/action.py", line 83, in __call__
response = getattr(parent.meta.client, operation_name)(**params)
File "/home/name/.local/lib/python2.7/site-packages/botocore/client.py", line 159, in _api_call
return self._make_api_call(operation_name, kwargs)
File "/home/name/.local/lib/python2.7/site-packages/botocore/client.py", line 483, in _make_api_call
operation_model, request_dict)
File "/home/name/.local/lib/python2.7/site-packages/botocore/endpoint.py", line 141, in make_request
return self._send_request(request_dict, operation_model)
File "/home/name/.local/lib/python2.7/site-packages/botocore/endpoint.py", line 170, in _send_request
success_response, exception):
File "/home/name/.local/lib/python2.7/site-packages/botocore/endpoint.py", line 249, in _needs_retry
caught_exception=caught_exception, request_dict=request_dict)
File "/home/name/.local/lib/python2.7/site-packages/botocore/hooks.py", line 227, in emit
return self._emit(event_name, kwargs)
File "/home/name/.local/lib/python2.7/site-packages/botocore/hooks.py", line 210, in _emit
response = handler(**kwargs)
File "/home/name/.local/lib/python2.7/site-packages/botocore/retryhandler.py", line 183, in __call__
if self._checker(attempts, response, caught_exception):
File "/home/name/.local/lib/python2.7/site-packages/botocore/retryhandler.py", line 251, in __call__
caught_exception)
File "/home/name/.local/lib/python2.7/site-packages/botocore/retryhandler.py", line 277, in _should_retry
return self._checker(attempt_number, response, caught_exception)
File "/home/name/.local/lib/python2.7/site-packages/botocore/retryhandler.py", line 317, in __call__
caught_exception)
File "/home/name/.local/lib/python2.7/site-packages/botocore/retryhandler.py", line 223, in __call__
attempt_number, caught_exception)
File "/home/name/.local/lib/python2.7/site-packages/botocore/retryhandler.py", line 359, in _check_caught_exception
raise caught_exception
botocore.vendored.requests.exceptions.ConnectionError: ('Connection aborted.', error(111, 'Connection refused'))
當Dynamodb不運行時,會發生這種情況。 檢查localhost:8000/shell
以驗證它是否正在運行。
確保滿足文檔中給出的所有先決條件 。
在開始本教程之前,您需要執行以下操作:
- 在計算機上下載並運行DynamoDB。 有關更多信息,請參閱下載並運行DynamoDB 。
- 注冊Amazon Web Services並創建訪問密鑰。 您需要這些憑證才能使用AWS開發工具包。 要創建一個AWS賬戶,請訪問http://aws.amazon.com/ ,選擇創建一個AWS賬戶,然后按照在線說明進行操作。
- 創建一個AWS憑證文件。 有關更多信息,請參閱Boto 3文檔中的“配置”。
- 安裝Python 2.6或更高版本。 有關更多信息,請參見https://www.python.org/downloads 。
如果要連接雲實例而不是localhost,請參考以下基於區域的端點。
https://docs.aws.amazon.com/general/latest/gr/rande.html#ddb_region
dynamodb = boto3.resource('dynamodb', region_name='us-west-2', endpoint_url="http://dynamodb.us-west-2.amazonaws.com")
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