DNS Caching & Cluster Autoscaling

Contentful - Ritterstraße 12 Berlin - View Map Berlin Kubernetes Meetup
Tue, Nov 19, 2019, 6:30 PM (CET)

About this event

Hello Berlin Kubernauts!

November has arrived and we are getting together at Contentful in just a couple weeks.

The first presentation is: CoreDNS-nodecache - A Highly-Available Node-Local DNS Cache

Yann Hamon & Karthik Viswanathan will explain a Kubernetes add-on that proposes running a DNS caching server on all of a cluster's nodes. The goal is to avoid "DNS timeout" issues. The suggested caching server is node-cache, a thin wrapper around CoreDNS. It handles the setup and teardown of the dummy network interface and associated iptables rules. Coredns-nodecache is an attempt to implement node-cache as a CoreDNS plugin, rather than a wrapper - providing high-availability and a simpler configuration.

The second presentation is: Autoscaling with Kubernetes

Johannes Würbach will lead us on a deep dive into various forms of Kubernetes autoscaling. He will cover cluster autoscaling, built-in horizontal pod autoscaling, custom metrics horizontal pod autoscaling, and vertical pod autoscaling. This presentation explains each of those terms and how they work. Johannes will also provide some guidance on when you should consider using one or more of them.

SPONSORED: A big thank you to Contentful for hosting the group this month and providing food & drinks. Thank you also to NetApp for ongoing support.

Are you a local member interested in presenting to the group? Please submit your presentation idea at: https://goo.gl/forms/fhsv9JnThW1IGSId2


18:30 - 19:00 - Social / Networking / Food / Drinks
19:00 - 19:10 - Community Announcements
19:10 - 19:40 - Yann Hamon & Karthik Viswanathan, Contentful
19:45 - 20:15 - Johannes Würbach, Contentful
20:15 - 20:45 - Social / Wrap-up


Yann Hamon is a Site Reliability Engineer (SRE) at Contentful.

Karthik Viswanathan is a SRE at Contentful.

Johannes Würbach is an infrastructure engineer at Contentful working on Kubernetes and Contentful's content storage layer. He started his career in social-gaming almost 10 years ago. He was focused on cloud infrastructure, demand based scaling, performance oriented programming, and has stayed focused on those concepts ever since.


The meetup will be held at Contentful’s office located at:
Ritterstraße 12
10969 Berlin


Tuesday, Nov 19
6:30 PM - 8:45 PM (CET)


Ritterstraße 12 Berlin