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Ray's Galactic Tech
Ray's Galactic Tech
Nov 21, 2025 · Cloud Native

Mastering Kubernetes HPA: How It Works, Real‑World Setup, and Troubleshooting

Horizontal Pod Autoscaler (HPA) in Kubernetes automatically scales pod replicas based on metrics like CPU, memory, or custom indicators, and this guide explains its core principles, configuration pitfalls, step‑by‑step troubleshooting commands, and advanced considerations such as API versions, stabilization windows, and integration with Cluster Autoscaler.

HPAKubernetesautoscaling
0 likes · 9 min read
Mastering Kubernetes HPA: How It Works, Real‑World Setup, and Troubleshooting
MaGe Linux Operations
MaGe Linux Operations
Jan 1, 2024 · Cloud Native

Install Kubernetes v1.18.8 on CentOS: Ingress, Dashboard, Helm Guide

This step‑by‑step tutorial shows how to set up a Kubernetes v1.18.8 cluster on CentOS 8.5 running in Hyper‑V, configure static IPs, unique host and machine IDs, install Docker, kubeadm, kubelet and kubectl, deploy flannel networking, the Kubernetes Dashboard, Metrics Server, Helm, and an NGINX Ingress controller, and includes troubleshooting tips.

CentOSDashboardKubernetes
0 likes · 25 min read
Install Kubernetes v1.18.8 on CentOS: Ingress, Dashboard, Helm Guide
Efficient Ops
Efficient Ops
Jan 15, 2023 · Cloud Native

Understanding kubectl top: How Kubernetes Monitors Nodes and Pods

This article explains how the kubectl top command retrieves real‑time CPU and memory metrics for Kubernetes nodes and pods, details the underlying data flow, metric‑server and cAdvisor architecture, and addresses common issues and calculation differences compared to traditional system tools.

KubernetescAdvisorkubectl top
0 likes · 15 min read
Understanding kubectl top: How Kubernetes Monitors Nodes and Pods
Efficient Ops
Efficient Ops
Nov 30, 2022 · Cloud Native

How kubectl top Retrieves Real‑Time Metrics in Kubernetes: A Deep Dive

This article explains how the kubectl top command gathers real‑time CPU and memory usage for nodes and pods, details the underlying data flow and metric API implementation in Kubernetes, compares heapster and metrics‑server, and addresses common troubleshooting scenarios.

HeapsterKubernetescAdvisor
0 likes · 15 min read
How kubectl top Retrieves Real‑Time Metrics in Kubernetes: A Deep Dive
MaGe Linux Operations
MaGe Linux Operations
Sep 4, 2022 · Cloud Native

Understanding kubectl top: How Kubernetes Metrics Are Collected and Interpreted

This article explains how the kubectl top command retrieves real‑time CPU and memory usage for nodes and pods, details the underlying data flow from cAdvisor through heapster or metrics‑server, clarifies metric calculations, compares results with native top and docker stats, and addresses common errors and troubleshooting steps.

KubernetescAdvisorkubectl top
0 likes · 14 min read
Understanding kubectl top: How Kubernetes Metrics Are Collected and Interpreted
Efficient Ops
Efficient Ops
Aug 29, 2022 · Cloud Native

Understanding kubectl top: How Kubernetes Metrics Work and Common Issues

This article explains how kubectl top retrieves real‑time CPU and memory usage for nodes and pods, details the underlying data flow and metric‑server architecture, and addresses frequent errors such as missing components, pause‑container accounting, and differences from host top or docker stats.

KubernetescAdvisorkubectl top
0 likes · 14 min read
Understanding kubectl top: How Kubernetes Metrics Work and Common Issues
MaGe Linux Operations
MaGe Linux Operations
Jul 1, 2022 · Cloud Native

Master Kubernetes Resource Insights with kube-capacity CLI

This guide explains how to install and use the kube-capacity command‑line tool to quickly view resource requests, limits, and utilization for pods and nodes in a Kubernetes cluster, including advanced options for filtering, JSON/YAML output, and integration with metrics‑server.

CLICloud NativeKubernetes
0 likes · 7 min read
Master Kubernetes Resource Insights with kube-capacity CLI
Ops Development Stories
Ops Development Stories
May 14, 2020 · Cloud Native

How to Build a Highly Available Kubernetes 1.18 Cluster with kubeadm, HAProxy, and Keepalived

This step‑by‑step guide shows how to set up a production‑grade Kubernetes 1.18 high‑availability cluster using kubeadm, HAProxy, Keepalived, Calico networking, the Kubernetes dashboard, and metrics‑server, covering node planning, environment preparation, component installation, cluster initialization, HA testing, and post‑deployment verification.

DashboardHAProxycluster-setup
0 likes · 30 min read
How to Build a Highly Available Kubernetes 1.18 Cluster with kubeadm, HAProxy, and Keepalived
Alibaba Cloud Native
Alibaba Cloud Native
Nov 18, 2019 · Cloud Native

How Kubernetes Monitoring Evolved: From Heapster to Metrics‑Server and Prometheus

This article explains the fundamentals of monitoring and logging in large‑scale Kubernetes clusters, classifies monitoring types, traces the evolution from Heapster to the lightweight metrics‑server, outlines the three Kubernetes monitoring APIs, reviews Prometheus as the de‑facto standard, and describes Alibaba Cloud’s enhanced monitoring and logging solutions.

KubernetesPrometheuslogging
0 likes · 24 min read
How Kubernetes Monitoring Evolved: From Heapster to Metrics‑Server and Prometheus