CodeBuild build failures.

AWS CodeBuild build failures can occur for various reasons, ranging from issues in your build specifications to infrastructure-related problems. Here are some common causes and steps to address CodeBuild build failures:

1. Check Build Logs:
   • Review the build logs in the CodeBuild console. Look for error messages or stack traces that provide information about the cause of the failure.
2. Verify Buildspec File:
   • Check your build spec file (usually buildspec.yml) for any syntax errors, incorrect commands, or misconfigured build phases.
3. Inspect Environment Variables:
   • Ensure that any environment variables required for your build are correctly set. This includes variables specified in the build spec file or environment variables set in the CodeBuild project configuration.
4. Check IAM Permissions:
   • Verify that the IAM role associated with your CodeBuild project has the necessary permissions to access resources like S3 buckets, ECR repositories, etc.
5. Artifact Output Paths:
   • If your build generates artifacts, double-check that the specified output paths in the build spec file are correct.
6. Network Issues:
   • If your build requires internet access, ensure that the VPC and subnet configurations for your CodeBuild project allow internet connectivity.
7. Check for Resource Limits:
   • Verify that your CodeBuild project's resource limits (e.g., memory, CPU) are sufficient for your build process. Consider increasing resources if necessary.
8. Review Environment Image:
   • Make sure the Docker image or runtime environment you're using in your build is compatible with the build process. If needed, update the environment image.
9. Verify Source Control Integration:
   • If you're using a source control system, ensure that the integration is correctly set up and that CodeBuild is pulling the correct source code.
10. Handle Credentials Properly:
    • If your build process requires access to AWS resources, ensure that you're using the appropriate credentials (e.g., IAM roles, AWS CLI configuration).
11. Software Version Compatibility:
    • Verify that the versions of software and dependencies used in your build process are compatible with each other.
12. Handle External Dependencies:
    • If your build process relies on external services or dependencies, ensure they are accessible and properly configured.
13. Consider Build Timeout Settings:
    • If your build process is taking a long time, ensure that the build timeout setting in your CodeBuild project configuration is appropriate.
14. Review AWS Service Limits:
    • Ensure that you're not hitting any service limits (e.g., concurrent builds) that might be causing failures.
15. Monitor for Infrastructure Issues:
    • Keep an eye on the AWS Service Health Dashboard and CloudWatch metrics for any reported issues with the CodeBuild service or underlying infrastructure.

If you've gone through these steps and are still experiencing build failures, consider checking specific error messages, consulting AWS documentation, or reaching out to AWS Support for further assistance. Providing detailed information about the error messages can greatly aid in troubleshooting.