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Virtual Event
August 17–August 20, 2020
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Thursday, August 20 • 18:05 - 18:40
Nondestructive Forensics: Debugging K8s Services Without Disturbing State - Alex Leong, Buoyant

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If debugging distributed systems is like solving a murder mystery, then we need a way to gather clues without disturbing the scene of the crime. Some application errors (resource leaks and race conditions in particular) can take a long time to reproduce; other errors might occur unexpectedly in production. When this happens, we want to gather as much
information as possible without restarting the pod. Tools like detailed logging, debug sidecars, and Linkerd's "tap" are only usable if we had the foresight to include them before the error occurred. Ephemeral containers promise to be a useful tool, but are currently in alpha. We will compare these techniques and then see how we can use direct access to the node to enter a pod's network namespace and do detailed network debugging without needing to restart any running containers.

Speakers
avatar for Alex Leong

Alex Leong

Software Engineer, Buoyant
Alex is one of the core maintainers of the Linkerd project, working on both the control plane and the data plane. Prior to working on Linkerd, he was a member of the API team at Twitter and worked on Twitter's migration from monolith to microservices. Alex has spoken at DevNet Create... Read More →



Thursday August 20, 2020 18:05 - 18:40 CEST
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