Here, we will learn how to Resolve the “NoCredentialProviders: no valid providers in chain” Error in AWS SDK with example in details.
The “NoCredentialProviders: no valid providers in chain” error occurs when the AWS SDK is unable to find valid AWS credentials for authenticating your requests.
Reasons for the error:
AWS SDK and CLI rely on a chain of providers to obtain the necessary credentials. When none of these providers can supply valid credentials, the error “NoCredentialProviders: no valid providers in chain” is triggered. The possible reasons for the error include:
- Missing or incorrectly set environment variables.
- Incomplete or incorrect AWS CLI configuration.
- Absence of IAM roles or incorrect IAM roles in EC2 instances, ECS tasks, or Lambda functions.
- Missing or improperly configured AWS shared credentials file.
How to set up AWS credentials
To resolve the “NoCredentialProviders: no valid providers in chain” Error in AWS SDK, you need to provide valid AWS credentials using one of the following methods:
1: Environment variables:
export AWS_ACCESS_KEY_ID="your_access_key_id" export AWS_SECRET_ACCESS_KEY="your_secret_access_key"
2: AWS CLI configuration:
aws configure # Enter your access key, secret key, default region, and output format when prompted.
3: EC2 Instance Profiles:
- Assign an IAM role with the necessary permissions to your EC2 instance via the AWS Management Console or CLI.
4: AWS Shared Credentials file:
Create a file named
credentials in the
.aws directory in your home directory and add the following content:
[default] aws_access_key_id = YOUR_ACCESS_KEY aws_secret_access_key = YOUR_SECRET_KEY
5: Amazon ECS Task Role:
- Create an IAM role with the required permissions and assign it to your Amazon ECS task definition.
6: AWS Lambda Execution Role:
- Assign an IAM role with the required permissions to your AWS Lambda function.
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