DNS Caching & Cluster Autoscaling

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Contentful

Ritterstraße 12 · Berlin

Wie du uns findest

When you reach the graffiti, just keep walking inside the building to the courtyard and you will see the Contentful FooBar on your left.

Bild des Veranstaltungsortes

Details

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

AGENDA

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

SPEAKER BIOS

Yann Hamon is a Site Reliability Engineer (SRE) at Contentful.
https://github.com/yannh

Karthik Viswanathan is a SRE at Contentful.
https://github.com/argvk

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.
https://github.com/johanneswuerbach

LOCATION

The meetup will be held at Contentful’s office located at:
Ritterstraße[masked] Berlin