AI agent applications, installation, large-model testing, computer fundamentals, IT operations and maintenance exchange, network technology exchange, Linux learning
The article walks through eight production‑grade shell scripts that secure Linux servers—from account policies and SSH hardening to firewalls, ClamAV, fail2ban, AIDE, SELinux and kernel sysctl tweaks—providing concrete commands, configuration examples and a one‑click hardening script.
This guide compiles essential Linux network commands—from ping and traceroute to ip, ss, and tcpdump—plus deep packet‑capture techniques with Wireshark and real‑world case studies, providing a step‑by‑step troubleshooting workflow that lets operators quickly pinpoint and resolve complex network failures.
The article examines how AI is reshaping operations—from instant fault detection and 47‑second incident resolution to natural‑language deployment scripts, predictive capacity planning, continuous security monitoring, and automated knowledge bases—while arguing that engineers will transition from fire‑fighters to system designers.
This comprehensive guide walks Linux system administrators through IPv6 fundamentals, address types, kernel checks, step‑by‑step configuration for CentOS/RHEL, Ubuntu and Debian, verification methods, common pitfalls, and best‑practice monitoring to smoothly transition from IPv4 to IPv6.
This article walks through Git installation, essential configuration, the three internal areas, object storage, branch mechanics, common commands, best‑practice workflows, and how Git triggers CI/CD pipelines, providing a complete understanding for developers who think they already know Git.
This guide walks you through installing a full LNMP stack on CentOS or Ubuntu, configuring Nginx, MySQL, and PHP, deploying WordPress with essential plugins and security hardening, and setting up popular forums such as phpBB, Flarum, and Discourse, followed by performance tuning tips.
This article shares ten years of ops experience and walks through the full lifecycle of VPN deployment—from OpenVPN, WireGuard, and IPsec/IKEv2 installation on Linux to hardware VPN vendor comparison and an in‑depth SD‑WAN technology overview—helping enterprises select the most suitable solution for their network, security, and cost requirements.
The author shares a curated collection of over 50 GB of free operations learning materials—including Linux system administration, data‑center fundamentals, Kubernetes clusters, a complete engineer learning path, and information‑security compliance—each with Baidu Cloud download links for beginners.
This article walks through selecting the most suitable AI coding agent, provides step‑by‑step installation commands for Claude Code, OpenCode, Pi Agent and Hermes, details how to configure six domestic large language models, introduces the cc‑switch tool for quick model swapping, compares model capabilities, and offers troubleshooting tips.
This comprehensive guide walks you through OpenStack deployment from a single‑node DevStack test to a production‑grade HA cluster with Kolla‑Ansible, covering hardware planning, component configuration, performance tuning, network setup, troubleshooting, monitoring, backup strategies, and useful operational scripts.
