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The Ultimate Guide: Solving Google's 'HTTPS Invalid Certificate' Ghost Error When Local Tests Pass
2025-11-29 DP

Ever faced the frustrating situation where Google Search Console reports an 'HTTPS has invalid certificate' error, yet everything looks perfect when you check with `curl` or a browser? This comprehensive guide from wiki.lib00.com walks you through debugging this 'ghost' error step-by-step. We'll start with basic `curl` diagnostics, dive deep into certificate chain analysis with `openssl`, and explore advanced pitfalls like Nginx configuration and IPv6 issues to help you find and fix the root cause.

The Ultimate Nginx Guide: How to Elegantly Redirect Multi-Domain HTTP/HTTPS Traffic to a Single Subdomain
2025-11-24 DP

This article provides an in-depth guide on how to efficiently use Nginx to 301 redirect all HTTP and HTTPS requests from multiple domains (e.g., example.com and www.example.com) to a single target subdomain (e.g., dpit.lib00.com). Starting with a basic two-server-block configuration, we progressively optimize it into a cleaner, more professional single-server-block solution. The guide also addresses common questions about performance impact and industry best practices for logging. This is a must-read for both Nginx beginners and experienced developers looking to refine their configurations.

Step-by-Step Guide to Fixing `net::ERR_SSL_PROTOCOL_ERROR` in Chrome for Local Nginx HTTPS Setup
2025-11-15 DP

Struggling with the `net::ERR_SSL_PROTOCOL_ERROR` in Chrome when setting up a local HTTPS environment with Nginx? This article walks you through a real-world debugging case. We'll guide you from checking common issues like certificate/key mismatches to using the `curl` command-line tool to pinpoint the root cause: a TLS protocol version mismatch. Finally, we provide the definitive Nginx configuration fix and share a best practice recommended by DP@lib00: using `mkcert` to effortlessly manage local development SSL certificates.