Scalable and Multitenant Networking in XDP and Kubernetes Operators
Talkat KubeCon + CloudNativeCon North America 2020 Virtual · on Friday, 2020-11-20· at 17:05· Intrado Virtual Event Platform,·
summary
A Kubernetes networking implementation using XDP/eBPF programs plus CRD operators that creates VPC and subnet objects and programs constant-time provisioning via RPCs to a few labeled hosts. It uses in-network bouncers and dividers (distributed hash tables) with Geneve encapsulation and eBPF maps to route and then install direct-host mappings on first ARP, avoiding per-flow rule bloat found in OVS. Demo provisions 40 endpoints at ~0.35s each, supports service replacement via scaled endpoints, and targets 50k–100k node clusters.
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chapters (15)
- 0:00Intro
- 0:38Agenda
- 3:07Main Topic
- 4:01Current Network Model
- 5:21Network Objects
- 6:43Introduction
- 8:23Limitations of flowbased network programming
- 10:38The rule of virtual function
- 11:47Creating a VPC
- 12:47Creating a Subnet
- 17:54Extra Hub Problem
- 18:43Direct Communication
- 20:01Kubernetes Services
- 22:16Summary
- 23:01Demonstration
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