Nahuel Hernandez

Nahuel Hernandez

Architecture, decisions, and anti-patterns from running AWS and Kubernetes in production. Containers, GitOps, and the things the official docs do not cover.

Running MCP Servers on EKS: Architecture for Production Agentic Workloads

MCP servers are spreading from local dev tools into production infrastructure. The default deployment patterns work fine for a single user. They fall apart when you put MCP behind real traffic on EKS. This post is about what changes when you run MCP servers as production workloads, what breaks, and how to design around it.

14-Minute Read

MCP servers on EKS

For most of 2025, MCP servers lived on developer laptops. You connected your editor or your local Claude client to a stdio process, the process held a session, you were the only user. Production was not a concern because there was no production.

GitOps Meets Auto-Scaling: How ArgoCD and Karpenter Should Be Designed Together on EKS

ArgoCD and Karpenter are usually installed in the same cluster but designed in isolation. This post is about what happens when you stop treating them as two separate concerns and start designing them as one feedback loop. Mental model, anti-patterns, and real numbers from a 40-replica production workload.

14-Minute Read

ArgoCD and Karpenter

Most EKS clusters I have audited in the last two years have ArgoCD installed and Karpenter installed. Almost none of them have those two things designed to work together. ArgoCD is set up by the platform team, Karpenter is set up later by the cost-optimization initiative, and the two run side by side without anyone owning the gap between them.

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Over 15-year experience in the IT industry. Working in SysOps, DevOps and Architecture roles with mission-critical systems across a wide range of industries. Wide experience with AWS, Terraform, Kubernetes, Containers, CI/CD pipelines, and Linux. Always keeping up with the latest technologies. Passionate about automating the run of the mill. Big focus on problem-solving.