When Metrics Leak Secrets: Kubernetes CTF Lessons

In this blog, I’ll walk you through how I uncovered three hidden flags in a Kubernetes cluster by investigating Grafana, VictoriaMetrics, and VictoriaLogs. Each step highlights a different misconfiguration from weak secret management to metrics leaking sensitive data, to logs revealing too much detail. I’ll also highlight the security lessons learned so you know what to avoid in your own cloud native architecture.

Serverless Computing in Kubernetes: A Developer’s Guide

Deploy serverless functions with OpenFaaS on Kubernetes using Rancher. Learn setup, scaling, and cloud-native app workflows for modern development.

Simplifying Microservices with Istio and Service Mesh Architecture

In this guide, we take a developer-first journey through Istio’s capabilities—sidecar proxies, WASM plugin customization, secure ingress and egress gateways, multi-cluster setups, zero-trust security with mTLS, and real-world traffic management patterns. Using a coffee shop microservices app as our example, we break down abstract concepts into digestible sections and hands-on examples.

Understanding Observability with OpenTelemetry and Coffee

Understanding Observability with OpenTelemetry and Coffee is your practical guide to modern observability. This blog breaks down OpenTelemetry concepts, explains code instrumentation with .NET 8, and explores the OpenTelemetry Collector. Using a real-world coffee shop microservices app to simplify tracing, logging, and metrics collection. Introducing SigNoz to help you get visibility into your distributed systems.