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Sep 4, 2025 · Cloud Native

Why Kubernetes HPA Ignores High CPU Usage and How Tolerance Affects Scaling

This article explains the internal architecture and source‑code flow of Kubernetes Horizontal Pod Autoscaler, detailing how components like HorizontalController and ReplicaCalculator compute desired replicas, why a default 10% tolerance can prevent scaling even when CPU exceeds the target, and how behavior policies and scaling limits influence HPA decisions.

Cloud NativeHPAHorizontal Pod Autoscaler

0 likes · 16 min read

Why Kubernetes HPA Ignores High CPU Usage and How Tolerance Affects Scaling

System Architect Go

Nov 16, 2024 · Cloud Native

Kubernetes 10 Common Questions and Answers

This article answers ten common Kubernetes questions, covering pod scheduling strategies, OOM behavior, dynamic ConfigMap updates, pod stability, ClusterIP service load balancing, log collection, liveness probes, scaling mechanisms, exec access, and troubleshooting container restarts, providing concise explanations for each scenario.

ClusterIPConfigMapHorizontal Pod Autoscaler

0 likes · 9 min read

Kubernetes 10 Common Questions and Answers

Linux Ops Smart Journey

Oct 7, 2024 · Cloud Native

Mastering Kubernetes Metrics Server: Deploy, Configure, and Optimize

This guide explains what the Kubernetes Metrics Server is, its key use cases such as autoscaling, health checks, and cost optimization, and provides step‑by‑step Helm commands to install, configure, and verify it in a cloud‑native cluster.

Cloud NativeHorizontal Pod AutoscalerKubernetes

0 likes · 6 min read

Mastering Kubernetes Metrics Server: Deploy, Configure, and Optimize

HomeTech

Mar 16, 2022 · Cloud Native

Understanding Kubernetes Horizontal Pod Autoscaler (HPA): Mechanism, Core Source Code, and Practical Insights

This article explains how Kubernetes Horizontal Pod Autoscaler (HPA) balances resource demand and workload by automatically scaling pod replicas, describes the different metric types it supports, walks through the core controller code (Run, worker, reconcile, and replica calculation), highlights current limitations, and shares practical observations from real‑world usage.

Horizontal Pod AutoscalerKubernetesMetrics

0 likes · 11 min read

Understanding Kubernetes Horizontal Pod Autoscaler (HPA): Mechanism, Core Source Code, and Practical Insights

Full-Stack DevOps & Kubernetes

Oct 23, 2020 · Cloud Native

Master Kubernetes Horizontal Pod Autoscaling with Metrics Server and Custom Metrics

This guide walks through setting up Kubernetes Horizontal Pod Autoscaling (HPA) using the Metrics Server for CPU and memory metrics, deploying a sample Go web app, performing load tests, and extending autoscaling with Prometheus‑based custom metrics for fine‑grained scaling control.

Auto ScalingHorizontal Pod AutoscalerKubernetes

0 likes · 20 min read

Master Kubernetes Horizontal Pod Autoscaling with Metrics Server and Custom Metrics

MaGe Linux Operations

Oct 8, 2020 · Cloud Native

How to Auto‑Scale Nginx on Kubernetes Using Prometheus Adapter and Custom Metrics

This guide walks through deploying an Nginx sample app on Kubernetes, exposing Prometheus‑collected custom metrics, configuring a Prometheus adapter, and creating a Horizontal Pod Autoscaler that scales the deployment based on request‑per‑second metrics.

DevOpsHorizontal Pod AutoscalerKubernetes

0 likes · 16 min read

How to Auto‑Scale Nginx on Kubernetes Using Prometheus Adapter and Custom Metrics

Alibaba Cloud Native

Jul 24, 2019 · Cloud Native

How Does Kubernetes HPA Really Scale Pods? Deep Dive into Principles and Evolution

This article explains the core principles of Kubernetes Horizontal Pod Autoscaler, walks through a concrete scaling example, discusses noise handling, cooldown periods, boundary calculations, and traces the evolution of HPA across API versions with practical YAML snippets.

HPAHorizontal Pod AutoscalerKubernetes

0 likes · 10 min read

How Does Kubernetes HPA Really Scale Pods? Deep Dive into Principles and Evolution

High Availability Architecture

May 10, 2018 · Cloud Native

Kubernetes Automatic Scaling with Custom Metrics Using Prometheus and HPA v2

This article explains how to configure Kubernetes Horizontal Pod Autoscaler (HPA) to scale workloads based on custom business metrics collected by Prometheus, covering installation of Metrics Server, deployment of a demo app, setup of the Prometheus adapter, and practical load‑testing steps.

Auto ScalingHorizontal Pod AutoscalerKubernetes

0 likes · 7 min read

Kubernetes Automatic Scaling with Custom Metrics Using Prometheus and HPA v2