ssl-certificate – ITFROMZERO – Share tobe shared!

Eliminate ‘Not Secure’ Warnings: How to Install Let’s Encrypt for VMware ESXi Using ACME

By admin August 20, 2026

Eliminate the annoying 'Not Secure' warning on VMware ESXi. Detailed guide on how to install free Let's Encrypt certificates via ACME.sh and DNS-01 challenge with ease.

Monitoring

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

By admin 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.