Someone asked me this exact question last week, and it’s a good one because both setups look the same if you squint. A bunch of machines, some shared storage in the middle, work spread across nodes. So why does one get called “big data” and the other “microservices”? Are they just two words for the same cluster? Honestly, no. They’re built on opposite assumptions about one thing: where the data lives and who moves to whom.
Everyone setting up a Kubernetes cluster eventually hits the same wall: how do I actually get traffic into this thing? Then the docs mention ClusterIP, NodePort, LoadBalancer, Ingress, Gateway API, MetalLB — and it spirals. Worse, there’s a Service type called “LoadBalancer” and there are actual load balancers, and they are not the same thing. Let me go through the real options, where each one sits in the stack, and what genuinely makes sense to reach for.