blackbox-exporter Archives - ITFROMZERO

Monitoring tutorial - IT technology blog

How to Never Forget SSL and Domain Renewals Again with Prometheus Blackbox Exporter

By IT From Zero April 23, 2026

Forgetting SSL renewals is a basic mistake that damages your reputation. Here is a detailed guide to automating monitoring and alerts 15 days in advance using Prometheus Blackbox Exporter.

Monitoring

Prometheus Blackbox Exporter: Monitor HTTP, DNS, TCP and SSL Certificate Expiry

By IT From Zero April 21, 2026

Prometheus Blackbox Exporter monitors websites, TCP ports, DNS resolution, and SSL certificates from the end-user's perspective — no agent installation required on each server. This guide covers installation, configuring HTTP/DNS/TCP modules, and setting up SSL expiry alerts integrated with Alertmanager.