Aws

Explains how the AWS default DNS server works for EC2 instances within a VPC, including the special 169.254.169.253 address and the CIDR-based resolver IP.

An overview of the AWS EC2 Instance Metadata Service (IMDS), including its link-local address and the difference between IMDSv1 and IMDSv2 access.

Explains how to access AWS EC2 user data from within an instance using the instance metadata service. Covers the metadata endpoint, a curl example, and where the user data script is stored on Linux and Windows.

A practical guide to installing and configuring the Ingress-Nginx Controller in Kubernetes, covering Helm and kubectl methods, cloud-provider annotations, and local testing workflows.

A practical guide to provisioning EFS filesystems and wiring them into Kubernetes via the AWS EFS CSI driver, IAM roles, and standard storage manifests. Covers StorageClass, PVCs, Deployments, and StatefulSets for shared, elastic storage.

A practical guide to mounting S3 buckets as volumes in Kubernetes pods using the AWS S3 CSI driver, including IAM role setup, StorageClass configuration, and deployment examples.