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Linux is the backbone of modern computing—powering servers, cloud platforms, and DevOps pipelines. In interviews for DevOps, SRE, System Administration, and Cloud roles, Linux troubleshooting questions are a favorite. But here’s the secret: interview...

Today’s server story is about a failing database connection. A web application was trying to connect to PostgreSQL 13 on one of our servers, but the connection simply wouldn’t work. Let’s walk through the problem, the investigation, and the fix. The ...

Spent some time in the lab fine-tuning RSVP-TE over an MPLS Core in EVE-NG. The goal? Build a fully operational LSP across the service provider backbone, ensuring label switching and TE constraints work as expected. But... I ran into a classic issue:...
