Viewing profile — lucavallin

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A comprehensive but quick walkthrough of everything you need to know about GCP networking: VPCs, subnets, routing, firewalls, Shared VPC, GKE networking, load balancing, Cloud NAT,…

Hello! This is a practical write-up based on notes from docs, blog posts, and Liz Rice’s Container Security. I pulled together the main ideas that helped me better understand how c…

I published a new blog post: "A Tour of eBPF in the Linux Kernel: Observability, Security and Networking". I recently read the book "Learning eBPF" by Liz Rice and condensed my not…

A Practical tour of eBPF in the Linux Kernel: Observability, Security and Networking. eBPF lets you run small, verified programs inside the Linux kernel, enabling fast observabilit…

I tried to write an end-to-end guide on Kubernetes networking, covering the full journey from the foundational Linux stack and CNI up to advanced topics like mTLS and service meshe…

I recently took a deep dive into the Linux kernel to understand how it handles processes, scheduling, memory, and more. While I had some OS knowledge from school, it always felt to…

In this post, I'll walk through OpenTelemtry core concepts and how to integrate OpenTelemetry in a Go application. By the end, you'll have a reusable telemetry package that sets up…

After more than a decade of writing software, I've read lots of opinions on how to write good software. Everyone loves to throw around rules and principles, so I'll do it too.

I recently made a contribution to Istio, an open-source service mesh that simplifies managing microservices. In this post, I explain how Istio handles traffic routing, security wit…

I recently made a contribution to Istio, an open-source service mesh that simplifies managing microservices. In this post, I explain how Istio handles traffic routing, security wit…

I've been working with Terraform for a while now, and I've noticed that there are a few things that people keep asking me about. I thought it would be helpful to write a blog post …