Error: dynamodb unable to locate credentials

What's Causing This Error

This error message indicates that the SDK or library used to interact with DynamoDB cannot locate the necessary credentials to authenticate the request. This can happen if the credentials are not set up correctly or if the SDK or library is not configured to use the correct credentials.

Solution: Here's How To Resolve It

To solve this error, ensure that the credentials are set up correctly and that the SDK or library is configured to use them. One way to do this is by setting your access key and secret key as environment variables and then using them to instantiate the DynamoDB client.

import boto3

import os

# Set access key and secret key as environment variables
os.environ['AWS_ACCESS_KEY_ID'] = 'ACCESS_KEY'
os.environ['AWS_SECRET_ACCESS_KEY'] = 'SECRET_KEY'

# Instantiate a client
dynamodb = boto3.client('dynamodb', region_name='us-west-2')

Another way to provide credentials is by providing them when creating the session.

import boto3

# Instantiate a session

session = boto3.Session(

    aws_access_key_id='ACCESS_KEY',

    aws_secret_access_key='SECRET_KEY',

    region_name='us-west-2'

)

# Instantiate a client
dynamodb = session.client('dynamodb')

You can also use an IAM role to provide credentials. This is useful when you run your code on an EC2 instance or Lambda function with an IAM role. In this case, you do not need to provide any access and secret keys.

import boto3

# Instantiate a client
dynamodb = boto3.client('dynamodb', region_name='us-west-2')

It is also essential to check that the provided access key and secret key are valid and have the necessary permissions to access the DynamoDB service.

Finally, check that the IAM user or role used to call the function has the necessary permissions to perform the desired operation on the DynamoDB service.