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1.Topology-aware Service Routing in Kubernetes Boots a Smarter Service Discovery Jun Du, Software Engineer, Huawei Cloud
2.Agenda Topologies in Kubernetes Topology-aware service routing Solutions and prototypes Q&A
3.Topology is Arbitrary AZ Region Rack Host Generator Anything you like…
4.Topology in Kubernets scheduler Scheduling is about finding hardware to run your code. Where should I run this Pod?
5.Node Affinity Should I run my Pod on this Node?
6.Pod Affinity/Anti-affinity Labels identify topologies topologyKey is the key of Node Labels Should I run my Pod in the same hostname as a web-frontend Pod?
7.Topologies in Pod (Anti-)Affinity
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10.Supported topology-aware features in Kubernetes Node level - Workloads - Volumes Within a node - Hardware
11.Agenda Topologies in Kubernetes Requests of topology-aware service routing Solutions and prototypes Q&A
12.Kubernetes Service & Endpoints
13.i ptables IPVS
14.Topology-aware service routing: user stories Clear demand for node-local - per-node services: fluentd , aws - es -proxy - secure “Find zone-local backends for service X”? - data costs - performance Extend: “locality” means same topological level - select a subset of endpoints based on topology
15.Topology-aware service routing: problem statements Hard requests or soft requests? - try local, then go wider ? - always want that one? How hard to try? - weight per topo What if multiple backends satisfy? - probabilities
16.Topology-aware service routing: problem statements Hard requests or soft requests? - try local, then go wider ? - always want that one? How hard to try? - weight per topo What if multiple backends satisfy? - probabilities
17.Solutions and prototypes API Changes:
18.Architecture
19.Data Flow
20.Topology-aware service routing R unning well in Huawei Cloud CCE Happy to open source the implementation - Proposal: https ://github.com/kubernetes/community/pull/1551
21.Contact US!
22.Contact US!