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Linux Cloud-Native Ops Stack

Focused on practical internet operations, sharing server monitoring, troubleshooting, automated deployment, and cloud-native tech insights. From Linux basics to advanced K8s, from ops tools to architecture optimization, helping engineers avoid pitfalls, grow quickly, and become your tech companion.

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Latest from Linux Cloud-Native Ops Stack

19 recent articles

Linux Cloud-Native Ops Stack

Jun 9, 2026 · Databases

Zero‑Downtime Redis Cluster Expansion in Production

This guide details a step‑by‑step, zero‑downtime expansion of a 3‑master‑3‑slave Redis Cluster to a 4‑master‑4‑slave setup, covering node standardization, network checks, big‑key handling, full backups, monitoring, slot migration planning, progressive migration methods, replica addition, post‑expansion validation, rollback procedures, and practical lessons learned.

ClusterExpansionHash Slots

0 likes · 13 min read

Zero‑Downtime Redis Cluster Expansion in Production

Linux Cloud-Native Ops Stack

Jun 5, 2026 · Databases

Deploy a 3‑Master‑3‑Slave Redis Cluster Without Pitfalls

This guide walks through setting up a Redis Cluster with three master and three replica nodes on Rocky 9.7 VMs, covering environment preparation, source compilation, configuration files, service creation, cluster creation, verification, and production‑grade tuning.

High AvailabilityLinuxProduction Configuration

0 likes · 16 min read

Deploy a 3‑Master‑3‑Slave Redis Cluster Without Pitfalls

Linux Cloud-Native Ops Stack

Jun 1, 2026 · Cloud Native

Interview Question: How Does Kubernetes Schedule Pods to Nodes? (Full Answer)

The article explains Kubernetes pod scheduling in detail, covering how the kube‑scheduler filters and scores nodes, binds the pod, and how kubelet launches containers, plus common reasons for pods staying Pending and useful troubleshooting commands.

KubernetesNodeSelectorPod scheduling

0 likes · 8 min read

Interview Question: How Does Kubernetes Schedule Pods to Nodes? (Full Answer)

Linux Cloud-Native Ops Stack

May 6, 2026 · Fundamentals

Why TCP Uses a Three‑Way Handshake and a Four‑Step Teardown

This article explains TCP fundamentals, detailing the three‑way handshake and four‑step connection termination, the purpose of each flag and state transition, and why three handshakes and four teardowns are required, including the role of the TIME_WAIT state.

TCPTIME_WAITfour-step termination

0 likes · 5 min read

Why TCP Uses a Three‑Way Handshake and a Four‑Step Teardown

Linux Cloud-Native Ops Stack

Apr 23, 2026 · Cloud Native

Kubernetes Interview: What Exactly Happens When You Delete a Pod?

When a pod is deleted in Kubernetes, the API server timestamps the request, services stop routing traffic, kubelet runs any preStop hook, sends SIGTERM followed by a configurable grace period, then SIGKILL if needed, cleans up resources, and finally removes the pod metadata, with controllers optionally recreating a replacement pod.

Graceful TerminationKubernetesPod Deletion

0 likes · 7 min read

Kubernetes Interview: What Exactly Happens When You Delete a Pod?

Linux Cloud-Native Ops Stack

Apr 16, 2026 · Operations

Step-by-Step Loki Binary Deployment on Linux (CentOS/Ubuntu)

This guide walks through preparing a Linux host, downloading Loki v3.6.10, configuring its YAML file, setting up a systemd service, deploying Promtail for log collection, and integrating Grafana for visualization, all using a unified /app/soft directory structure.

CentOSGrafanaLinux

0 likes · 10 min read

Step-by-Step Loki Binary Deployment on Linux (CentOS/Ubuntu)

Linux Cloud-Native Ops Stack

Apr 14, 2026 · Cloud Native

Loki for Cloud‑Native: Architecture Deep Dive and Step‑by‑Step Binary Deployment

This article explains why Loki’s tag‑only indexing makes it a lightweight, cost‑effective log aggregation solution for Kubernetes, breaks down its micro‑service architecture and data flow, and provides a hands‑on binary deployment guide using Docker Compose.

GrafanaKubernetesLoki

0 likes · 10 min read

Loki for Cloud‑Native: Architecture Deep Dive and Step‑by‑Step Binary Deployment

Linux Cloud-Native Ops Stack

Apr 14, 2026 · Cloud Native

Understanding Kubernetes Storage: Ephemeral, Persistent, and Config Management

The article explains Kubernetes' storage architecture, covering ephemeral volumes like emptyDir and hostPath, persistent storage with PV/PVC (static and dynamic provisioning via StorageClass), configuration storage using ConfigMap and Secret, and enterprise‑grade plugins such as Ceph, providing code examples and practical usage guidelines.

CephConfigMapDynamicProvisioning

0 likes · 9 min read

Understanding Kubernetes Storage: Ephemeral, Persistent, and Config Management

Linux Cloud-Native Ops Stack

Apr 12, 2026 · Cloud Native

Full‑Stack Monitoring of Kubernetes with Prometheus and Grafana (Part 4)

This guide walks through setting up Prometheus and Grafana to monitor a Kubernetes cluster and all business pods, covering the deployment of kube‑state‑metrics, the required RBAC objects, service definitions, and detailed Prometheus scrape configurations for both kube‑state‑metrics and cAdvisor.

GrafanaKubernetesMonitoring

0 likes · 5 min read

Full‑Stack Monitoring of Kubernetes with Prometheus and Grafana (Part 4)

Linux Cloud-Native Ops Stack

Apr 10, 2026 · Cloud Native

Full-Stack Monitoring with Prometheus & Grafana on Kubernetes (Part 3)

This guide walks through deploying Prometheus and Grafana in a Kubernetes cluster using binary installation, detailing the Prometheus scrape configurations for core components, the necessary Service and Endpoints manifests, and how to reload the configuration to enable full‑stack monitoring.

Cloud NativeGrafanaKubernetes

0 likes · 6 min read

Full-Stack Monitoring with Prometheus & Grafana on Kubernetes (Part 3)