A DevOps engineer successfully creates an Amazon Elastic Kubernetes Service (Amazon EKS) cluster that includes...

Amazon Web Services DOP-C02 Question Answer

A DevOps engineer successfully creates an Amazon Elastic Kubernetes Service (Amazon EKS) cluster that includes managed node groups. When the DevOps engineer tries to add node groups to the cluster, the cluster returns an error that states, "NodeCreationFailure: Instances failed to join the Kubernetes cluster." The DevOps engineer confirms that the EC2 worker nodes are running and that the EKS cluster is in an active state. How should the DevOps engineer troubleshoot this issue?

Ensure that the EKS cluster's VPC subnets do not overlap with the 172.17.0.0/16 CIDR range.

Use kubectl to update the kubeconfig file to use the credentials that created the cluster.

Run the AWSSupport-TroubleshootEKSWorkerNode runbook.

Create an AWS Identity and Access Management (IAM) OpenID Connect (OIDC) provider for the cluster.

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Amazon Web Services DOP-C02 Summary

Vendor: Amazon Web Services
Product: DOP-C02
Update on: Aug 1, 2025
Questions: 322

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A DevOps engineer successfully creates an Amazon Elastic Kubernetes Service (Amazon EKS) cluster that includes...

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