We share professional insights on cloud-native, DevOps & operations, Kubernetes, observability & monitoring, and Linux systems.
ZAP (Zed Attack Proxy), an OWASP open‑source web application security testing tool, offers proxy interception, active and passive scanning, CI/CD integration via Docker or command line, and is suited for penetration testing, DevSecOps, and compliance checks such as OWASP Top 10 and PCI DSS.
This guide explains how to install TCPDump on various platforms, list network interfaces, capture traffic, apply filters by IP, port, or protocol, save and read capture files, and use advanced options like limiting packet count and displaying packet contents, empowering network and security professionals.
Elasticsearch, built on Lucene, is a distributed search and analytics engine offering full-text search, log and metric analysis, real-time data processing, and recommendation capabilities; the guide explains its core functions, basic index and document management, and advanced query and aggregation features with practical API examples.
Learn essential MySQL commands—from connecting and managing databases, tables, and users to performing CRUD operations, advanced queries, indexing, and backup/restore—along with practical code examples and optimization tips, enabling you to efficiently handle relational data in real‑world applications.
This article introduces six indispensable tools—kubectl, Helm, Prometheus + Grafana, Istio, Velero, and K9s—that simplify Kubernetes cluster management by covering resource handling, monitoring, networking, security, backup, and interactive UI, helping readers efficiently operate production‑grade clusters.
This article compares traditional Operations (Ops), DevOps, and Site Reliability Engineering (SRE) by outlining their definitions, core responsibilities, typical technology stacks, and career considerations, helping readers understand the distinct philosophies and choose the path that best fits their interests and market demand.
This article compiles practical advice from experienced operations engineers on the challenges and strategies for achieving a 300,000 CNY yearly salary, covering skill development, career moves, company size, automation, and the evolving role of SRE/DevOps.
This article presents seven practical Bash shell scripts for Linux system administration, covering automatic file backup, disk usage alerts, old log cleanup, server reachability checks, DNS resolution monitoring, HTTP service health checks, and random password generation, each with explanations and code examples.
This article compares Prometheus and Zabbix across architecture design, data collection methods, storage engines, scalability, deployment complexity, alerting mechanisms, and suitable scenarios, helping operations teams choose the most appropriate monitoring solution for cloud‑native or traditional enterprise environments.
This article explains why Kubernetes certificates often become hidden "time bombs," describes the typical failures caused by expired certificates, and provides practical methods to detect upcoming expirations and safely renew or replace them to keep clusters running smoothly.
