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19-22 March
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Wednesday, March 20 • 15:25 - 16:00
When They Go High, We Go Low – Hooking Libc Calls to Debug Kubernetes Apps - Tal Zwick, MetalBear

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Many tools exist for debugging cloud-native applications, and they mostly take one of two approaches: they either continuously sync local files to the remote container, or they connect the local machine to the cluster. mirrord takes a novel approach: when developers run their code with mirrord, it injects a dynamic library into the process, hooks libc calls, and relays some operations to be executed on the cluster instead of locally. That way, developers can run their code locally and debug it with a debugger. With all of the code's input and output forwarded to and from the cluster, the local process “thinks” it’s running in the cluster and can be tested and debugged in cloud conditions. This talk will discuss the rationale behind using low-level techniques in cloud-native tooling, explain some of the low level Rust code that makes it possible, and show mirrord in action with a live demo.

Speakers
avatar for Tal Zwick

Tal Zwick

Software Engineer, MetalBear
I started my way in the tech world with military service in a cyber security related unit, and then studied computer science at the Technical University of Munich. I now work at MetalBear, where I write low-level, open-source Rust code for mirrord.


Wednesday March 20, 2024 15:25 - 16:00 CET
Pavilion 7 | Level 7.3 | S06
  SDLC
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