Unable to use Dynamodb locally with Node 18.13.0

Question

I have a problem that I do not understand. With node 18.13.0, I am not able to use Dynamodb locally.

I always get this error: "message": "UnknownEndpoint: Inaccessible host: localhost' at port 8005'. This service may not be available in the `localhost' region.", "type": 0

But with node 16 I have no problem. Here is all the information I can give you, I am on mac (m1) on Ventura 13.1 (also on windows 11).

The serveless version:

Framework Core: 3.27.0 (local) 3.27.0 (global)
Plugin: 6.2.3
SDK: 4.3.2

Here is my serverless.yml:

service: hydradis-planning-delivery
provider:
  name: aws
functions:
  - '${file(routes.yml)}'
plugins:
  - serverless-plugin-typescript
  - serverless-offline
  - serverless-dynamodb-local
custom:
  dynamodb:
    start:
      port: 8005
  serverless-offline:
    httpPort: 3005
    lambdaPort: 3015

Here is my connection:

var dynamoDbCreation = new AWS.DynamoDB({
region: 'localhost',
endpoint: ('http://localhost:8005')
});

Can you help me?

Did you start DynamoDB Local? Does netstat, or equivalent, show it listening on port 8005? — jarmod
– jarmod, Commented Jan 28, 2023 at 17:28
AWS Lambda node.18x runtime does not use the AWS SDK 2.0 by default. So the DynamoDB code probably wron there. You have 2 option, install the 2.0 aws sdk. Or rewrite the code to support 3.0. docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/index.html — Sándor Bakos
– Sándor Bakos, Commented Jan 29, 2023 at 10:00
I don't know why, but yesterday there was a response that gave the answer. If I replace the localhost in the region field with 127.0.0.1 it works. Thanks anyway for the info. — Doublon
– Doublon, Commented Jan 29, 2023 at 20:32

Leeroy Hannigan · Accepted Answer · 2023-01-30 11:52:36Z

2

You should not use literal string localhost as region but rather the endpoint:

var dynamoDbCreation = new AWS.DynamoDB({
region: 'http://127.0.0.1:8005',
endpoint: ('http://localhost:8005')
});

answered Jan 30, 2023 at 11:52

Leeroy Hannigan

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1 Comment

relbns Over a year ago

in my case it was the endpoint that I needed to change from "localhost" to 127.0.0.1 for example: new AWS.DynamoDB({ region: "localhost"; endpoint: "127.0.0.1:8000"; // instead of localhost:8000"; })

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