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 explains how to view Kubernetes certificates, check their expiration dates with kubeadm, renew them when needed, restart kubelet services, verify the renewal, and automate the whole process with a Bash script.
This guide introduces the open‑source 1Panel web console, outlines its key features, provides step‑by‑step commands for quick installation, and details essential hardening, backup, and troubleshooting practices for reliable Linux server operations.
MySQL’s original utf8 implementation was a limited, buggy version that only supported three‑byte characters, leading to data loss for emojis and rare symbols, so MySQL introduced utf8mb4 as a full UTF‑8 solution and now recommends it as the default encoding.
This guide explains what Traefik is, highlights its automatic service‑discovery and dynamic routing features, and provides step‑by‑step Docker‑Compose instructions to install Traefik, deploy a sample service, and verify the setup using curl or a browser.
This guide walks you through the four core stages of HTTPS certificate handling—CA distribution, domain request, validation, and data encryption—while providing detailed OpenSSL commands, Linux/Windows/macOS trust‑store paths, and a ready‑to‑run shell script for fully automated certificate generation.
This article introduces pwru, Cilium's eBPF‑based packet‑tracing tool, explains kernel requirements, shows how to install the pre‑built binary, details command‑line options, and provides practical examples for filtering, output customization, and debugging dropped packets in Linux networking.
This guide walks through how to design and implement effective Prometheus metrics for various application types, covering golden metrics, label selection, naming conventions, histogram bucket choices, and Grafana visualization tricks to improve observability and operational insight.
Termix is a free, self‑hostable, web‑based server management suite that combines multi‑panel SSH terminals, file handling, and robust security features, and can be quickly installed via Docker with optional SSL support for production environments.
MySQL 8.0 will lose Oracle support on April 30, 2026, ending security patches, bug fixes, and official assistance, so organizations must choose between upgrading to a newer MySQL version, switching to Percona Server, or migrating to alternative databases like MariaDB or PostgreSQL.
The talk details Tencent PCG’s end‑to‑end observability platform, its data‑standardization pipeline, client‑backend session linking, AI‑enhanced SRE Agent with large language models, and the roadmap toward a SaaS offering, illustrating how modern operations integrate AI for rapid fault localization.
