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Difficulty: MediumTroubleshooting Local Development and AWS Credentials

A developer is testing a local Java application that uses the AWS SDK for Java v2 to retrieve messages from an Amazon SQS queue. The application is configured to use a profile named dev-profile. When running the application locally, it fails with the following error:

software.amazon.awssdk.core.exception.SdkClientException: Unable to load credentials from any of the providers in the chain

The developer verifies that the local AWS credentials and configuration files exist. Which TWO conditions could explain this credential loading failure? (Select TWO).

  1. The credentials file (~/.aws/credentials) defines the profile as [profile dev-profile] instead of [dev-profile].Answer
  2. The environment variable AWS_PROFILE is not set on the local machine, and the ~/.aws/credentials file does not contain a [default] profile.Answer
  3. C
    The developer configured the credentials in the Systems Manager Parameter Store under the name dev-profile, which the SDK cannot retrieve locally.
  4. D
    The IAM role associated with the SQS queue has a trust policy that does not include the developer's local workstation IP address under the principal field.
  5. E
    The developer resolved the issue by hardcoding the access key and secret key strings directly as arguments in the SqsClient.builder() constructor.

Answer

The credentials file (~/.aws/credentials) must define the profile without the 'profile' prefix, and the environment variable AWS_PROFILE must be set to the profile name if a default profile is not defined.
The correct options identify valid reasons for the SDK's inability to load credentials. First, in the shared credentials file (~/.aws/credentials), profiles must be declared as [profile_name] (e.g., [dev-profile]) without the 'profile' prefix, which is only used in the configuration file (~/.aws/config). If the prefix is included in the credentials file, the SDK will fail to resolve the profile. Second, if the AWS_PROFILE environment variable is not defined, the default credential provider chain looks for the [default] profile. If no default profile is configured, the chain fails and throws an SdkClientException.

Step-by-Step Solution

1
Examine the local system's environment variables to check if AWS_PROFILE is set.
If AWS_PROFILE is unset, the SDK default provider chain defaults to searching for credentials under the '[default]' profile header.
To understand which profile the Java SDK is attempting to load.
2
Inspect the content and structure of the ~/.aws/credentials file.
Identify if the target profile is defined correctly as '[dev-profile]' or incorrectly as '[profile dev-profile]'.
The credentials file does not support the 'profile' keyword prefix in brackets, which is a common syntax error that prevents the SDK from reading the credentials.

Key Concept

AWS SDK credential lookup precedence and configuration syntax rules for local development.
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Topics

Troubleshooting Local Development and AWS Credentials

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