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unfortunately, this tool assumes full coverage with k8. but let's say you have an external pub/sub solution and your services are decoupled. that's a pretty low bar.

sidenote: I noticed Istio (envoy actually) has some weird non-deterministic behavior when you hit pod resource limits (504 bad gateway, 0DC)

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Not sure if I'm addressing your point correctly, but Kardinal does have the concept of external services and provides a plugin system that allows you to manage stateful external services. Here is an example [1] of a plugin to manage Neon [2] (a serverless Postgres DB with support for branches). You can find more information about plugins here: https://kardinal.dev/docs/concepts/plugins

[1] https://github.com/kurtosis-tech/neondb-plugin [2] https://neon.tech/

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