In-person + Virtual
16 -20 May
Learn More and Register to Attend

The Sched app allows you to build your schedule but is not a substitute for your event registration. You must be registered for KubeCon + CloudNativeCon Europe 2022 to participate in the sessions. If you have not registered but would like to join us, please go to the event registration page to purchase a registration.

Please note: This schedule is automatically displayed in Central European Summer Time (UTC +2). To see the schedule in your preferred timezone, please select from the drop-down menu to the right, above "Filter by Date." The schedule is subject to change.
Back To Schedule
Friday, May 20 • 11:55 - 12:30
Logs Told Us It Was DNS, It Felt Like DNS, It Had To Be DNS, It Wasn’t DNS - Laurent Bernaille & Elijah Andrews, Datadog

Sign up or log in to save this to your schedule, view media, leave feedback and see who's attending!

Feedback form is now closed.

It all started with a team reaching out because they had DNS issues during rolling updates. Business as usual when you host hundreds of applications on dozens of Kubernetes clusters… Four weeks later: We are reading kernel code to understand the corner cases of dropping Martian packets. Could this be the connection between gRPC client reconnect algorithms and the overflowing conntrack table we can feel but not see? In time, we solved the issue. And for once… it wasn't DNS! In this talk, we will focus on one of the most complex incidents we have faced in our Kubernetes environment. We will go through the debugging steps in detail, dive deep into the mysterious behaviors we discovered and explain how we finally addressed the incident by simply removing three lines of code.

Click here to view captioning/translation in the MeetingPlay platform!

avatar for Laurent Bernaille

Laurent Bernaille

Principal Engineer, Datadog
Laurent Bernaille worked several years as a consultant specializing in cloud, containers, and automation and helped organizations migrate to the public cloud, adopt containers and improve their deployment pipelines. He is now Staff Engineer at Datadog and works in the Compute team... Read More →
avatar for Elijah Andrews

Elijah Andrews

Senior Software Engineer, Datadog
I'm a software engineer at Datadog. I'm currently working on our networks, and previously worked on our data ingestion pipelines. Outside of work, I love playing guitar, going to concerts, and spending time with my cat Bao.

Friday May 20, 2022 11:55 - 12:30 CEST
Pavilion 4, Room A | Level 2 | Central Forum Feria Valencia