We share professional insights on cloud-native, DevOps & operations, Kubernetes, observability & monitoring, and Linux systems.
This article introduces common Linux log files, essential command‑line utilities such as cat, less, tail, grep, awk, and sed for viewing logs, and powerful analysis tools like logrotate, journalctl, logwatch, and goaccess, providing practical examples for effective system log management.
This article lists the six most hazardous Linux commands, explains why they can cripple a system, and provides practical safeguards to prevent accidental system destruction while highlighting proper usage practices for each command.
This article provides a comprehensive guide to designing and deploying an enterprise‑grade monitoring system, covering requirement analysis, tool selection such as Prometheus and Zabbix, system architecture, step‑by‑step implementation, alerting, visualization, and ongoing maintenance to ensure reliable IT operations.
This guide explains how to enable Nginx's stub_status module, install and run the Nginx Prometheus Exporter, configure Prometheus to scrape Nginx metrics, and visualize the data using Grafana, providing a complete monitoring solution for web services.
This article introduces three free and user-friendly Docker visual management tools—Docker Desktop, Portainer, and Docker UI—detailing their key features such as cross‑platform support, graphical interfaces, container and image management, monitoring, and multi‑platform compatibility to help developers simplify container operations.
This article explains VPN technology and outlines four common VPN types—IPSec, SSL/TLS, PPTP, and L2TP/IPSec—detailing their modes, advantages, and security considerations for remote access and site‑to‑site networking, and also compares ease of deployment versus security risks, helping readers choose the appropriate solution for their network environment.
This article explains essential DevOps metrics—including deployment frequency, lead time for changes, change failure rate, mean time to recovery, and customer satisfaction—detailing why they matter, how to measure them, and practical practices to improve each metric for more efficient and reliable software delivery.
This article explains the Linux /proc virtual filesystem, detailing its role as an in‑memory pseudo‑filesystem that provides comprehensive system and process information such as CPU, memory, uptime, process details, hardware, and filesystem data.
The article presents NordPass's annual most‑used password list, highlights the top ten weak passwords in China that can be cracked in seconds, explains why users choose them, and offers four practical recommendations for creating stronger, more secure passwords.
This article explains why enterprises need a private Docker registry, introduces the open‑source Harbor project, outlines its architecture and hardware/software requirements, and provides detailed installation, configuration, and usage instructions—including Docker, Docker‑Compose, and Harbor setup commands—to get a secure, CNCF‑certified container image repository up and running.
