BestHub
Sign in
Tagged articles

Horizontal Pod Autoscaler

8 articles · Page 1 of 1
Ops Development Stories
Ops Development Stories
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
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
HomeTech
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 AutoscalerMetricsautoscaling
0 likes · 11 min read
Understanding Kubernetes Horizontal Pod Autoscaler (HPA): Mechanism, Core Source Code, and Practical Insights
Full-Stack DevOps & Kubernetes
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 AutoscalerMetrics Server
0 likes · 20 min read
Master Kubernetes Horizontal Pod Autoscaling with Metrics Server and Custom Metrics