Name: Enhancing DNS Reliability in Kubernetes With Node Local DNS Cache - Sanjay Kumar K K R & Priyanshi Agrawal, New Relic
Start: 2025-08-06T16:30:00+0530
End: 2025-08-06T17:00:00+0530

6-7 August
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Wednesday August 6, 2025 4:30pm - 5:00pm IST

Hall 6

In Kubernetes, DNS resolution is vital for service discovery. CoreDNS, the default DNS provider, can face performance issues such as timeouts, latency, and scalability challenges, which increase reliance on upstream DNS and lead to unreliable service discovery. To enhance DNS reliability, we propose integrating Node Local DNS Cache.

We'll discuss implementing node-local DNS caching in 270 clusters with over 18,000 nodes, effectively resolving DNS issues, boosting resolution reliability, reducing CoreDNS load, and minimizing dependency on upstream DNS sources. Attendees will gain insights into the technical approach, including performance assessments and testing scenarios emphasizing latency improvements. We've achieved a 30x performance enhancement and greater dns query-handling capacities through node-local DNS cache deployment. This session will provide valuable understanding of techniques to ensure robust DNS resolution in large-scale Kubernetes environments.

Speakers

Sanjay Kumar K K R

Software Engineer, New Relic

Sanjay Kumar is a Software Engineer at New Relic, specializing in cloud-agnostic Kubernetes clusters at scale. With expertise in multi-cloud infrastructure, observability, and platform engineering, he has built resilient, high-performance Kubernetes deployments across AWS, GCP, and... Read More →

Priyanshi Agrawal

Software Engineer, New Relic

Priyanshi is a software engineer with 3+ years of experience at VMware and New Relic, specializing in GO, Kubernetes, Microservices, Restful Web Services, Git, AWS, and multicloud solutions. Known for blending technical expertise with leadership, Priyanshi excels at driving innovative... Read More →

Wednesday August 6, 2025 4:30pm - 5:00pm IST
Hall 6

Operations + Performance

Content Experience Level Beginner

KubeCon + CloudNativeCon India 2025

Sanjay Kumar K K R

Priyanshi Agrawal

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