February 22, 2026An AI agent that can execute code, run shell commands, or call APIs needs a sandbox. Without one, a single bad tool call – whether from a bug, a hallucination, or a prompt injection attack – can read secrets, modify production data, or pivot to other systems. This article is a decision framework for choosing the right sandboxing strategy based on your trust level, threat model, and performance requirements.
February 22, 2026Multi-tenancy in Kubernetes means running workloads for multiple teams, customers, or environments on shared infrastructure. The core tension is always the same: sharing reduces cost, but isolation prevents blast radius. Choosing the wrong model creates security gaps or wastes money. This guide provides a framework for selecting the right approach and implementing it correctly.
Every Kubernetes multi-tenancy approach falls into one of three categories, each with different isolation guarantees:
February 22, 2026Namespaces are the foundation for isolating workloads in a shared Kubernetes cluster. Without a deliberate strategy, teams deploy into arbitrary namespaces, resources are unbound, and one misbehaving application can take down the entire cluster.
Namespaces provide four isolation boundaries:
kubectl get pods -n payments-prod shows exactly what you expect, not a jumble of unrelated workloads.These exist in every cluster and should be off-limits to application teams:
February 22, 2026You have dev, staging, and production. Same infrastructure, different sizes and settings. How do you organize Terraform? Two competing approaches:
.tf files, multiple state files selected by terraform workspace select.tf files and stateBoth work. Both have tradeoffs. The right choice depends on how similar your environments are, who manages them, and how much isolation you need.