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.
This guide explains why disks larger than 2 TB cannot use MBR, shows how to use GPT with the parted tool, walks through partitioning, formatting, mounting, and configuring automatic mounts via UUID, and lists six critical red‑flags to prevent costly mistakes.
This guide walks through the complete process of setting up a three‑node RabbitMQ 3.12.14 cluster on Rocky Linux 9.7 ARM, covering host configuration, firewall rules, SELinux, time sync, Erlang and RabbitMQ installation, directory layout, cookie synchronization, service start‑up, cluster joining, verification, production hardening, common admin commands and troubleshooting.
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.
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.
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.
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.
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.
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.
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.
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.
