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Thursday, May 6 • 13:30 - 14:05
Live Experiments with K8s Applications: Pitfalls and How to Avoid Them - Fabio Oliveira & Srinivasan Parthasarathy, IBM Research

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Your K8s apps are instrumented for observability. You are using ingress controllers/service meshes in your production K8s cluster and can shift traffic between different versions of your app. You wish to take your CI/CD to the next level by introducing metrics-driven automated rollouts using live experiments like canary, A/B, and A/B/n comparisons. What could go wrong? We demonstrate how subtle differences in the design of the experiment---how metrics are collected, queried, and used; the traffic shifting policy; the number of requests sent to different versions during the experiment and its duration; and when/how it is terminated---can lead to dramatically different outcomes, and in turn, directly impact the version of the app chosen to run in production. We also discuss simple and statistically effective remedies for the above problem, so that experiments become repeatable and their outcomes are more accurate and trustworthy.

avatar for Fabio Oliveira

Fabio Oliveira

Research Scientist, IBM Research
Fabio is a Research Scientist and Manager at IBM Research where he leads the Cloud-native Computing and Analytics team in the Hybrid Cloud Platform Research Department. Fabio has co-founded the iter8 open source project and has worked on several projects related to cloud computing... Read More →
avatar for Srinivasan Parthasarathy

Srinivasan Parthasarathy

Senior Research Scientist and Manager, DevSecOps, IBM
Sri is a senior research scientist and manager at IBM Research, where he leads the DevSecOps group. Sri co-founded the Iter8 open-source project, and has presented at Kubecon EU 2020 and 2021, and at multiple community meetups like Knative and KFServing. He holds 25+ patents and has... Read More →

iter8 pdf

Thursday May 6, 2021 13:30 - 14:05 CEST
CI/CD Theater