Monitoring Archives - ITFROMZERO

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A Practical Guide to Monitoring PgBouncer Connection Pooler with Prometheus and Grafana

By IT From Zero October 14, 2026

Hands-on experience monitoring PgBouncer with Prometheus and Grafana. Learn how to track waiting queries, measure pool saturation, and craft alert rules that eliminate alert fatigue in production.

Monitoring

Installing and Configuring Vector: A High-Performance Log Pipeline Alternative to Logstash

By IT From Zero October 12, 2026

A hands-on comparison of Vector vs. Logstash covering RAM, CPU usage, and log parsing. Includes a step-by-step guide to installing Vector on Linux, writing VRL pipelines to parse Nginx logs, and shipping them efficiently to Elasticsearch.

Monitoring

Installing OpenCost on Kubernetes: Real-Time Cloud Cost Allocation with Prometheus

By IT From Zero October 12, 2026

Learn how to install OpenCost on Kubernetes with Prometheus to break down and allocate real-time cloud costs down to namespaces and pods.

Monitoring

Installing Coroot: Infrastructure and Application Monitoring with eBPF, Automated Root Cause Analysis

By IT From Zero October 12, 2026

A guide to installing Coroot for infrastructure and microservice monitoring via eBPF. A zero-code solution that automates service mapping and root cause analysis.

Monitoring

Installing and Configuring Fluent Bit on Linux: High-Performance Log Collection, Filtering, and Forwarding to Loki and Elasticsearch

By IT From Zero October 11, 2026

A practical guide to configuring Fluent Bit on Linux: Collect, parse, and route Nginx logs and syslog to Grafana Loki and Elasticsearch with minimal resource overhead.

Monitoring

Monitoring Pi-hole DNS Server with Prometheus and Grafana: Track DNS Query Traffic, Ad Blocking Rates, and Top Clients

By IT From Zero October 10, 2026

Transform Pi-hole into a network security monitoring station with Prometheus and Grafana. Step-by-step setup for pihole-exporter, battle-tested PromQL queries, and practical alerting strategies to eliminate false alarms.

Monitoring

Guide to Monitoring Self-Hosted GitHub Actions Runners with Prometheus and Grafana: Track Runner Health, Job Queue, and Build Duration

By IT From Zero October 2, 2026

Running self-hosted GitHub Actions runners without monitoring leaves CI/CD teams vulnerable to unexpected crashes and clogged job queues. This guide covers a comprehensive monitoring solution for runner infrastructure, job queues, and build duration using Prometheus and Grafana.

Monitoring

Monitoring Memcached with Prometheus & Grafana: Decoding the ‘Blind Spots’ Overloading Your Database

By IT From Zero September 18, 2026

Is your system slow because of Memcached or the Database? Learn how to use Prometheus Memcached Exporter and Grafana to track Hit Rate, Evictions, and Memory Usage effectively.

Monitoring

Installing Nagios Core on Ubuntu: Monitoring Rock-Solid Infrastructure with NRPE and Custom Plugins

By IT From Zero September 9, 2026

Don't overlook Nagios Core if you need absolute stability. A detailed guide on installing Nagios on Ubuntu, configuring NRPE, and writing high-quality custom monitoring plugins.

Monitoring

Advanced PromQL: Don’t Let “Average Numbers” Mislead You

By IT From Zero September 9, 2026

Don't be fooled by averages. Learn how to use Histogram Quantiles and Subqueries in PromQL to measure P99 latency and optimize your monitoring system.