Before Kubernetes was launched, it could have at most 25 nodes in a cluster. At 1.0, the target was 100. Meanwhile, Borg, Omega and Mesos were all running away at 10,000. What did it take to get Kubernetes to this number, and above? SIG Scalability and GKE Tech Lead Wojciech Tyczynski tells us.
Do you have something cool to share? Some questions? Let us know:

web: kubernetespodcast.com
mail: kubernetespodcast@google.com
twitter: @kubernetespod

Chatter of the week

Follow-up:

Chairs, from Episode 107
Christmas trees, from Episode 104
Kids music

The duck song
The duck joke
Autotune the News
The duck song goes viral on TikTok
Walmart Yodeling Kid





News of the week

KubeCon US goes virtual
PromCon schedule
AWS App2Container

Episode 48, with Issy Ben-Shaul


GKE brings Node Local DNS cache to GA

Episode 106, with John Belamaric


Update kernel and Kubelet config on GKE nodes
AKS brings 1.17 to GA; adds containerd and priority placement group support
Diamanti Spektra 3.0
Kubernetes WG Naming
Introducing Cloud Native Community Groups
Updated CNCF Storage whitepaper
Presslabs moves to Kubernetes

Presslabs Stack and WordPress Operator



Links from the interview

Omega

Episode 43, with Brian Grant


Defining scalability
Original SLOs

API-responsiveness: 99% of all our API calls return in less than 1 second
Pod startup time: 99% of pods (with pre-pulled images) start within 5 seconds


Target SLO doc - 25 nodes
Borg - ~10,000 nodes
Sep 2015, Kubernetes 1.0 - 100 nodes

“Kubernetes Has A Ways To Go To Scale Like Google, Mesos” by Timothy Prickett Morgan


March 2016, Kubernetes 1.2 - 1,000 nodes
July 2016, Kubernetes 1.3 - 2,000 nodes

Work by Clayton Coleman, guest of Episode 85


March 2017, Kubernetes 1.6 - 5000 nodes
etcd v3 improvements for web scale
Scalability Envelope
Today’s scalability numbers
EndpointSlices

Episode 104, with Bowei Du


JD.com’s 10,000 node clusters
Alibaba’s 10,000 node clusters

Episode 95, with Xiang Li


Google’s 15,000 node GKE clusters
Twitter session at the upcoming Google Cloud Next by Reza Motamedi and Maciek Różacki
Poseidon and Firmament
Wojciech Tyczynski:

GitHub
LinkedIn