This public account is maintained by Xiaotianguo and friends, regularly publishing widely-read original technical articles. We focus on operations transformation and accompany you throughout your operations career, growing together happily.
This guide reviews essential Ansible modules—including ping, setup, file, copy, service, cron, yum, user, group, synchronize, mount, get_url, and command—explaining their purposes, key options, and providing practical command‑line examples for effective agentless automation.
This comprehensive guide lists essential Linux commands—covering help, file and directory manipulation, content processing, compression, system information, networking, disk management, permissions, user administration, built‑in utilities, system monitoring, and process control—providing concise English descriptions for each to help users efficiently manage and troubleshoot Linux systems.
This comprehensive guide explains what Helm is, its core concepts like charts and releases, how to install and upgrade it across platforms, essential commands for managing charts and releases, and why Helm simplifies Kubernetes application deployment, version control, and dependency management.
ICBC’s Software Development Center built an AI‑powered, multi‑layer data platform and decision engine that enables real‑time, precise risk monitoring and automated response for credit‑card operations, dramatically improving detection speed, coverage, and warning quality while supporting a full‑process intelligent risk‑control loop.
This guide introduces Smartctl, a powerful command‑line utility for monitoring disk health, covering installation, device discovery, health checks, SMART attribute interpretation, self‑tests, error log analysis, and automation techniques to proactively prevent storage failures on Linux systems.
A detailed post‑mortem explains how a sudden traffic surge, insufficient pod count, and a custom thread‑pool bottleneck caused Tomcat thread‑pool saturation, health‑check failures, and a zone‑wide outage, and offers concrete lessons on capacity planning, monitoring, and safe coding practices.
This article explains the fundamentals of Prometheus Histogram metrics, covering data format, metric types, how histograms work as cumulative time series, provides Go code examples for collection, and demonstrates practical queries for rate, bucket analysis, and quantile calculations to monitor service performance.
This guide introduces Terraform, an open-source IaC tool, covering its core concepts, key features, installation steps, command hierarchy, and execution workflow, enabling readers to confidently automate and manage cloud and on-premise infrastructure using declarative configurations.
This article introduces nerdctl, a Docker‑compatible CLI built on containerd, outlines its key features, installation methods, and essential commands—including image building and Docker Compose support—providing developers and sysadmins a lightweight alternative for advanced container management.
3FS is an open‑source distributed file system that abstracts multiple machines into a single namespace, offering massive scalability, fault tolerance, and high throughput through components like Meta, Mgmtd, Storage, and Client, and leveraging the CRAQ protocol for strong consistency and efficient reads and writes.
