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EPISODE · Jun 16, 2026 · 9 MIN

How Kubernetes Network Policies Create Silent Outages

from DevOps Daily with Fexingo: CI/CD, Kubernetes, and Modern Software Operations · host Fexingo

Lucas and Luna dig into a specific Kubernetes failure pattern that most teams discover the hard way: network policies that block healthy traffic after a rollout. They walk through a real incident at a mid-size fintech company where a seemingly innocuous deny-all ingress policy took down payment processing for 47 minutes. Lucas explains how Kubernetes NetworkPolicy objects are evaluated, why default-deny patterns can backfire, and why teams should use audit-mode logging before enforcing. Luna shares a pragmatic checklist for testing network policies in staging. They close with the one label selector rule every DevOps engineer should memorize before their next production deploy. A solid episode for anyone running Kubernetes beyond a hobby cluster. #Kubernetes #NetworkPolicy #DevOps #ProductionIncident #Fintech #PodNetworking #CNI #Calico #Cilium #DefaultDeny #LabelSelector #SilentOutage #InfrastructureAsCode #CloudNative #Technology #FexingoBusiness #BusinessPodcast #TechOps Keep every episode free: buymeacoffee.com/fexingo

Episode metadata supplied by the publisher feed · Published Jun 16, 2026

What this episode covers

Lucas and Luna dig into a specific Kubernetes failure pattern that most teams discover the hard way: network policies that block healthy traffic after a rollout. They walk through a real incident at a mid-size fintech company where a seemingly innocuous deny-all ingress policy took down payment processing for 47 minutes. Lucas explains how Kubernetes NetworkPolicy objects are evaluated, why default-deny patterns can backfire, and why teams should use audit-mode logging before enforcing. Luna shares a pragmatic checklist for testing network policies in staging. They close with the one label selector rule every DevOps engineer should memorize before their next production deploy. A solid episode for anyone running Kubernetes beyond a hobby cluster. #Kubernetes #NetworkPolicy #DevOps #ProductionIncident #Fintech #PodNetworking #CNI #Calico #Cilium #DefaultDeny #LabelSelector #SilentOutage #InfrastructureAsCode #CloudNative #Technology #FexingoBusiness #BusinessPodcast #TechOps Keep every episode free: buymeacoffee.com/fexingo

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Frequently Asked Questions

How long is this episode of DevOps Daily with Fexingo: CI/CD, Kubernetes, and Modern Software Operations?

This episode is 9 minutes long.

When was this DevOps Daily with Fexingo: CI/CD, Kubernetes, and Modern Software Operations episode published?

This episode was published on June 16, 2026.

What is this episode about?

Lucas and Luna dig into a specific Kubernetes failure pattern that most teams discover the hard way: network policies that block healthy traffic after a rollout. They walk through a real incident at a mid-size fintech company where a seemingly...

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