This article explains how to design SLA metrics for object storage services, describes the S3 protocol, proposes availability calculations, outlines monitoring and alerting rules, and provides practical implementation examples using s3cmd, Python boto, and Java SDK to ensure reliable cloud storage operations.
This article explains the Zabbix‑Agent active mode workflow, detailing how the agent initiates TCP connections to the Zabbix‑Server to request monitoring items, receives the item list, sends collected data back, and provides step‑by‑step configuration of the agent and server, including template cloning and essential parameters.
This article provides two Bash scripts: one that continuously displays inbound and outbound traffic of a specified network interface, and another that remotely checks disk usage on up to 100 servers, issuing warnings when partitions exceed a defined threshold.
This extensive training program covers everything a data center operations engineer needs—from foundational infrastructure management and server hardware maintenance to advanced network configuration, security hardening, monitoring, fault handling, and practical hands‑on skills for real‑world challenges.
This guide explains how to create a shell script that checks SSL certificate expiration dates and integrates it with Zabbix by configuring a user parameter, testing the script, and setting up monitoring items, triggers, graphs, and alerts to ensure services remain available.
This guide explains how to troubleshoot Filebeat failing to start due to an EOF error while loading registrar state, by inspecting logs, resetting the registry directory, and restarting the service on a Linux host.
This guide explains how to deploy RabbitMQ on Kubernetes and improve its performance through Helm installation, resource tuning, monitoring, scaling, security hardening, and advanced configuration techniques, providing practical code examples for each step.
This article explains the origins of GitOps, defines its core principles of declarative infrastructure, versioned desired state, automated approval, and compliance monitoring, and outlines its benefits and a concrete practice using tools such as GitLab, ArgoCD, Kubernetes, Terraform, Prometheus, and Grafana.
The article introduces Promoter, a Go‑based webhook that fetches Prometheus metrics, renders alert graphs with gonum/plot, stores the images in S3‑compatible object storage, and embeds them in DingTalk notifications, providing deployment instructions, template customization, and core implementation details.
This guide explains how to complement Prometheus white‑box monitoring with black‑box probes by deploying the Blackbox Exporter in a Kubernetes cluster, configuring ConfigMaps, Deployments, Services, and Prometheus scrape jobs for HTTP, DNS, TCP, and ICMP checks, and using annotations for automatic service discovery.
This article explains how database administrators can monitor system resource usage with commands like top, iostat, and vmstat, and configure MySQL slow query logging, including enabling the log, setting thresholds, viewing logs, and applying best‑practice recommendations for analysis and issue resolution.
This article introduces Redis Sentinel as the official high‑availability solution for Redis, explains its core functions, provides configuration examples, compares three ways to receive failover notifications (script, client subscription, and indirect service), and offers design recommendations for robust production deployments.
This article presents a comprehensive overview of risk control model building for online small‑loan scenarios, covering pre‑loan, in‑loan and post‑loan stages, the associated data pipelines, model deployment strategies, optimization attempts, and monitoring frameworks to ensure accuracy, stability and effectiveness.
This article provides a detailed overview of common Linux server failures, a step‑by‑step methodology for fault isolation, practical monitoring tools and commands, and a real‑world case study illustrating diagnosis and remediation techniques for production environments.
This article explains the key Linux performance indicators—CPU, memory, disk I/O, file system, and network—describes how to monitor them with commands like top, vmstat, iostat, iotop, and smem, and provides practical guidance on interpreting the results to identify and resolve system bottlenecks.
This tutorial explains how to add Actuator and Prometheus dependencies to a Spring Boot application, configure security, expose metrics endpoints, run Prometheus and Grafana via Docker, and set up Grafana dashboards for real‑time monitoring of Spring Boot services.
This article explains how to build real-time monitoring applications using PHP and the WebSocket protocol, covering the fundamentals of WebSocket, setting up a Ratchet server, creating client-side JavaScript connections, and providing complete code examples such as a stock price monitor.
The article explains how automating thread dump creation and download in Kubernetes using tools like Fabric8, Prometheus, and CI/CD pipelines dramatically improves fault‑diagnosis speed, data centralization, real‑time capture, and integration with testing frameworks, transforming manual, error‑prone processes into streamlined, intelligent operations.
This guide walks you through integrating SpringBoot with Prometheus and Grafana, covering dependency setup, YAML configuration, a test controller, Prometheus scrape jobs, and Grafana dashboard creation to achieve real‑time application monitoring and performance analysis.
This article explains how an operations platform can automate and streamline IT management by detailing its core value, essential components such as CMDB, monitoring, automation tools, ticketing, and analytics, and outlining implementation steps, technology choices, and advanced extensions like AI and DevOps integration.