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Monitoring tutorial - IT technology blog

Monitoring Longhorn on Kubernetes: Prometheus & Grafana Setup with Real-World Troubleshooting

By IT From Zero November 4, 2026

Longhorn storage clusters can degrade silently while apps keep running, risking data loss on subsequent node failures. Learn how to set up Prometheus, Grafana, and fine-tune alerts to prevent false alarms.

Python

A Guide to Using prometheus-client in Python: Collecting and Exporting Custom Metrics for Prometheus and Grafana

By IT From Zero November 3, 2026

A detailed guide on using prometheus-client in Python to track Counter, Gauge, and Histogram metrics, avoid high cardinality traps, and build practical Grafana dashboards.

Monitoring

Integrating CrowdSec with Prometheus and Grafana: Linux Server Attack Monitoring and Alerting

By IT From Zero November 2, 2026

A battle-tested guide from 6 months of running CrowdSec with Prometheus and Grafana in production: monitor attacks in real time, visualize metrics, and eliminate alert fatigue on Linux servers.

MySQL

Comprehensive Guide to MySQL Monitoring with Prometheus, Grafana, and mysqld_exporter

By IT From Zero October 31, 2026

A comprehensive guide to building a deep MySQL monitoring system using Prometheus, Grafana, and mysqld_exporter, complete with production-ready configs, optimized PromQL queries, and bottleneck troubleshooting strategies.

Monitoring

How to Monitor HashiCorp Vault with Prometheus and Grafana: Tracking Token Leases, Request Latency, and Unseal Status

By IT From Zero October 25, 2026

A detailed guide to monitoring HashiCorp Vault with Prometheus and Grafana. Learn how to collect internal telemetry, measure request latency, manage token leases, and detect sealed cluster nodes early.

Monitoring

Monitoring Argo CD Application Sync and Health Status with Prometheus and Grafana

By IT From Zero October 23, 2026

A practical guide on configuring ServiceMonitors, writing PromQL queries, and importing Grafana dashboards to monitor Argo CD sync and health status.

Monitoring

Centralized Cloudflare Traffic and Security Monitoring with Cloudflare Exporter, Prometheus, and Grafana

By IT From Zero October 22, 2026

How to integrate Cloudflare Exporter with Prometheus and Grafana for centralized monitoring of traffic, cache hit ratios, and 502 errors. Includes production-ready Docker Compose, practical PromQL queries, and API rate-limiting tips.

Database

How to Install and Use VictoriaMetrics: An Optimized Time-Series DB to Replace Prometheus

By IT From Zero October 19, 2026

Compare monitoring scaling strategies and learn how to deploy VictoriaMetrics with Docker, cutting RAM usage by 4x and saving up to 7x disk space compared to Prometheus.

Monitoring

Monitoring ClickHouse with Prometheus and Grafana: Query Performance, Mutations, and RAM

By IT From Zero October 19, 2026

A comprehensive guide to leveraging ClickHouse's native OpenMetrics endpoint with Prometheus and Grafana. Master critical PromQL queries to monitor QPS, Part Mutations, and RAM usage to prevent downtime.

Docker

Comprehensive Guide to Docker Container Monitoring with Prometheus, cAdvisor, and Grafana

By IT From Zero October 16, 2026

Unexplained Docker container crashes are a nightmare for any engineer. This step-by-step guide walks you through setting up a comprehensive monitoring stack using cAdvisor, Prometheus, and Grafana with Docker Compose to visualize and track your container resources.