Marcin Jasion - Pragmatic DevOps
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    How to debug Istio Upstream Reset 502 UPE (old 503 UC)

    Istio is a complex system. For the applications, the main component is the sidecar container Istio-Proxy, which proxies while traffic from all containers in Pod. And this can lead to some issues. This post describes one of the most complicated problems I have encountered in my career. The problem - Connection Reset 🐛 During Istio on a huge system, with more than different 40 microservices, on a single endpoint, QA engineers found a bug.

    April 25, 2022 Read
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