Senior Site Reliability Engineer | Ingénieur.e en fiabilité de site senior

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You have a Kubernetes cluster running in a cloud environment. An application team reports that their microservice cannot reach an external service. What steps would you take to diagnose and resolve this issue?

A microservice running in your Kubernetes cluster is experiencing intermittent connectivity issues when trying to access another service within the cluster. You’re using Cilium as the CNI. How would you leverage Cilium’s tools and eBPF-based capabilities to diagnose the problem?

You notice that Pods in your Kubernetes cluster can’t connect to an external service hosted on the public internet (e.g., a third-party API). How would you debug the issue using Cilium and cloud networking tools?