Default-deny NetworkPolicy without breaking DNS
Locking a namespace to default-deny and adding traffic back safely, why DNS breaks first, and the selector mistake that silently allows far more than intended.

Every post tagged NetworkPolicy — practitioner notes from running Kubernetes, OpenShift and DevOps tooling in production for clients across the EU and the Gulf.
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Locking a namespace to default-deny and adding traffic back safely, why DNS breaks first, and the selector mistake that silently allows far more than intended.