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The Horizontal Pod Autoscaler (HPA) in Kubernetes automatically scales the number of pods in a deployment or replica set based on observed resource usage, such as CPU or memory. This article breaks down how HPA works, when to use it, its pros and cons, and how to get started with it in your Kubernetes cluster. 1. What is HPA? HPA dynamically adjusts the number of pods in a Kubernetes workload (like a Deployment or StatefulSet) based on metrics from the Kubernetes Metrics Server. ...

Kubernetes Resource Management: LimitRange vs ResourceQuota Managing resources in Kubernetes is critical for ensuring fair usage, stability, and predictable performance in a multi-tenant cluster. Two powerful tools provided by Kubernetes for this purpose are LimitRange and ResourceQuota. This article explains what they are, their differences, and how to use them effectively. What is LimitRange? LimitRange is a Kubernetes policy object that sets default resource limits (CPU/memory) for containers in a namespace. ...

Need a secure, fast, and self-hosted solution for storing container images? Setting up a private Docker registry is easier than you think. Why Run Your Own Docker Registry? Running your own registry allows you to: Avoid Docker Hub rate limits Store proprietary images securely Speed up CI/CD workflows Control image retention and access Great for air-gapped environments and enterprise deployments. 1. Prerequisites You’ll need: Docker installed Access to a server or VM Optional: domain name and TLS certs (for production) 2. Start a Local Registry (Quick Start) docker run -d -p 5000:5000 --name registry registry:2 This launches a registry on localhost:5000. ...

Deploying applications to Kubernetes? Follow these best practices to avoid downtime, improve scalability, and simplify operations. 1. Use Readiness and Liveness Probes Probes help Kubernetes know when your app is healthy and ready to serve traffic. livenessProbe: httpGet: path: /healthz port: 8080 initialDelaySeconds: 5 periodSeconds: 10 readinessProbe: httpGet: path: /ready port: 8080 initialDelaySeconds: 5 periodSeconds: 10 2. Configure Resource Requests and Limits Avoid over/under-scheduling: ...

Common Ingress Errors in Kubernetes Ingress is a powerful Kubernetes resource that manages external access to services within your cluster. However, it often becomes a source of confusion and frustration due to misconfigurations or overlooked details. This article outlines the most common Ingress errors and how to fix them. 1. Misconfigured Annotations Annotations can control features like URL rewrites, authentication, and rate limiting. Incorrect annotations may silently break your setup. ...