DNS and Kubernetes

—and getting it wrong almost stalled critical clinical workflows.

A Radiology customer of ours had invested significantly into Kubernetes for application modernization. But intermittent failures kept surfacing:

❌ “Service not found” errors
❌ Slow access to clinical imaging apps
❌ Random outages blamed on “the network”

The real culprit?
👉 Cluster DNS stretched to breaking point
👉 Configuration drift across CoreDNS pods
👉 Zero observability for resolution failures

Once we fixed it:
✅ DNS became predictably reliable
✅ App requests resolved instantly
✅ Clinicians got fast, uninterrupted access

Because when DNS works, everything works.
And when it doesn’t… well, even Kubernetes can’t save you. 😅

📊 Before vs After: What We Fixed

(Interactive diagram above 👆)

✅ CIO/CTO Outcome:

Reliability, speed, and operational confidence — delivered quietly through the foundational services that everyone assumes “just work.”

🔔 Call To Action:

If you're scaling Kubernetes in healthcare or another critical environment…

📌 Let’s run a Kubernetes Reliability Assessment focused on:

• DNS & service discovery health

• CoreDNS performance/config validation

• Network policy & service routing alignment

• Observability & failure-path testing

Prevent the outage before it becomes your headline.