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Error: ConfigError: Missing region in config

Solution

You must specify a region. You can also configure your region by running "aws configure".
This error is a not an DynamoDB specific error, it can happen with any AWS API/CLI/SDK command if you're not having a default AWS region setup in your environment variables or in credentials configuration.

There are a few ways to solve this error:

  • You can set the AWS_DEFAULT_REGION environment variable to something like "us-east-1" (replace with region you're actually using).

    export AWS_DEFAULT_REGION=us-east-1

  • If using AWS profiles, you can include the region in the ~/.aws/config file. Make sure following entry exists in this file:

    [profile my-profile]
    region=us-east-1

  • If using CLI, you can end your command with --region=[region]

    aws dynamodb list-tables --endpoint-url http://localhost:8000 --region=us-east-1

  • If using SDK, you pass the region you want to use into the DynamoDB service construtor. In Node.js case, it will look like this:

    import { DynamoDB } from "aws-sdk"
    
    const ddb = new DynamoDB({
      region: 'us-east-1'
    })
    

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