EKS

Kubernetes is a popular tool for managing containerized applications. However, there are a few misunderstandings about how it works. One of the most common misconceptions concerns port exposure in Kubernetes pods. This article explains the truth about port exposure in Kubernetes. The Misconception Like many newcomers to Kubernetes, I initially thought that only the ports specified in the pod manifest would be exposed and accessible. The ports field in the YAML file seemed to be a natural place to define which ports were to be opened, in the same way that a traditional firewall is configured. This assumption led me to believe that any port not explicitly declared would be closed and unreachable. ...

Amazon Elastic Kubernetes Service (EKS) is a managed Kubernetes service that simplifies the process of deploying, managing, and scaling containerized applications. To ensure optimal functionality and performance, EKS relies on several essential add-ons. In this article, we’ll explore three crucial EKS add-ons: AWS VPC CNI , Kube-proxy , and CoreDNS. We’ll delve into what they are, how they work, why they’re indispensable for your EKS cluster, and when they became required components. ...

In the world of Kubernetes and AWS, managing access to AWS resources from your Kubernetes cluster can be tricky. That’s where AWS IAM Roles for Service Accounts (IRSA) comes in — a feature that helps bridge the gap between Kubernetes and AWS, providing a secure and efficient way to grant AWS permissions to your Kubernetes workloads. This article explains what IRSA is, why it’s important and how to configure it in your Amazon EKS cluster. ...

As Kubernetes administrators and developers, we’ve all heard the notion that pods can get evicted due to high CPU pressure on a node. But is this really true? Let’s explore this idea and put it to the test. 1 — Understanding Pod Eviction and CPU Management In Kubernetes, pod eviction is the process of removing one or more pods from a node in order to reclaim resources. This can happen for various reasons, such as: ...

Photo by frank mckenna on Unsplash Container Storage Interface (CSI) drivers play a crucial role in managing persistent storage for containerized applications. When working with Amazon Elastic Kubernetes Service (EKS), integrating CSI drivers becomes essential for efficient storage management. In this guide, we will delve into the details of CSI drivers on Amazon EKS and explore how to install and use them seamlessly with file systems. Understanding CSI Drivers: CSI is a standardized interface that allows storage vendors to develop plugins that can be used across various container orchestration platforms. With EKS, these drivers help manage the lifecycle of storage resources, enabling dynamic provisioning, attaching, and detaching volumes to and from pods ...