Focused on sharing DevOps, Kubernetes, Linux, Docker, Istio, microservices, Spring Cloud, Python, Go, databases, Nginx, Tomcat, cloud computing, and related technologies.
This guide walks you through installing Ollama on Linux, configuring its service, pulling the Deepseek‑R1 model, and exposing a friendly Open‑WebUI Docker interface for interactive AI chat and private knowledge‑base uploads.
This step‑by‑step guide shows how to set up a full LNMP stack, compile and configure Zabbix server, proxy, and agents on CentOS 7, covering repository setup, service initialization, database preparation, UI initialization, and host registration for a robust distributed monitoring solution.
This guide walks you through Ansible fundamentals, installation, core concepts, sample playbooks, advanced modules like templates and handlers, dynamic inventory, and Ansible Tower, enabling you to automate configuration management and deploy complex environments such as LAMP stacks with confidence.
This guide walks through a complete Kubernetes DevOps case study, detailing how to containerize micro‑services, create Docker images, write deployment and service manifests, set up a CI/CD pipeline with Jenkins or GitLab CI, integrate monitoring with Prometheus‑Grafana, manage logs via ELK/EFK, optionally add a service mesh, and perform fault‑injection testing for continuous optimization.
This guide compiles a comprehensive set of Linux command‑line utilities—including shell quoting rules, environment handling, text processing, process management, system monitoring, networking, and /proc filesystem exploration—to help sysadmins diagnose, locate, and resolve a wide range of system issues efficiently.
K3k is a lightweight, experimental tool from Rancher that streamlines the installation and management of K3s clusters via a simple CLI and Helm‑deployed controller, enabling developers to quickly spin up, test, and tear down Kubernetes environments locally or in CI/CD pipelines.
This guide explains why a production Redis cluster may show intermittent timeouts and READONLY errors, analyzes root causes such as network jitter, resource saturation, and costly commands, and provides step‑by‑step troubleshooting and configuration fixes to restore stability and performance.
This guide lists several free Docker registry mirror URLs, shows how to add them to the daemon.json file, and explains the steps to restart Docker so that image pulls are faster and more reliable.
This guide presents twenty common production‑environment problems—from log analysis and database recovery to Kubernetes scheduling—detailing real‑world scenarios, step‑by‑step command solutions, and preventive measures that help engineers quickly diagnose, resolve, and avoid outages.
This article introduces gping, a Rust‑based network diagnostic tool that extends the classic ping command with real‑time ASCII graphing, multi‑host support, customizable colors, and cross‑platform compatibility, and provides step‑by‑step installation and usage examples on Linux.
