AI agent applications, installation, large-model testing, computer fundamentals, IT operations and maintenance exchange, network technology exchange, Linux learning
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.
This guide walks through Ceph’s architecture, deployment with cephadm, hardware selection, common failure scenarios, and practical performance tuning steps, offering concrete commands and best‑practice recommendations to keep a Ceph cluster stable and efficient.
This guide walks through the complete Prometheus monitoring lifecycle—from binary, Docker, and Kubernetes deployments to Ansible‑driven node_exporter rollout, SNMP switch and router monitoring, alert routing via WeChat, SMS and email, production‑grade tuning, high‑availability designs, and systematic troubleshooting.
This article walks through data‑center network architecture, explains the distinct roles of switches, routers, firewalls and web‑traffic management devices, compares major vendors, highlights key selection metrics, and provides ready‑to‑run configuration examples for each device type.
The article explains why bastion hosts are essential for operations, compares five widely used solutions—including JumpServer, Teleport, Guacamole, QiZhi, and Spug—highlights their strengths and weaknesses, and provides a detailed, step‑by‑step guide to install and use JumpServer for secure, auditable server access.
This guide walks through setting up a production‑grade Docker environment by deploying a private Harbor registry, integrating GitLab CI for automated builds and deployments, and configuring Prometheus‑Grafana monitoring with alerting, while sharing practical pitfalls and best‑practice recommendations.
This step‑by‑step guide shows how to install MongoDB 7.0 on Linux, configure a production‑grade replica set, enable keyfile‑based internal authentication, create RBAC users, restrict network access, set system limits, schedule backups, and apply performance‑tuning and monitoring practices to keep the database secure and reliable.
SQLite, the server‑less, single‑file database engine, is the most widely deployed database on the planet, powering Android, iOS, browsers and countless desktop apps; this article walks through its core features, Linux installation, command‑line CRUD, language bindings for Python, C, Java and Go, plus practical backup and performance tricks.
This article walks you through installing PostgreSQL via binary packages or source compilation, securing the instance, and applying memory, connection, and WAL tweaks on a 16‑core, 32 GB server to boost throughput from under 1 k TPS to over 4 k TPS.
This article walks readers through MySQL and MariaDB relationships, compares binary and source‑code installations, details security initialization steps, and provides concrete high‑concurrency configuration parameters for production environments, all with copy‑and‑paste commands.
