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  1. Manuel Rodriguez

    Fri 25 November 2022

    Troubleshoot pod traffic with nsenter and tcpdump tools

    When a pod fails to contact another network resource, logs might provide some hints, but sometimes the ultimate evidence of what is happening can be seen from a tcpdump packet capture; however, not all pods have tcpdump tools or even a shell to interact with. This blog post demonstrates how to use certain tools available in OpenShift and GNU/Linux to overcome those challenges and use tcpdump to validate network traffic in pods deployed on top of OpenShift clusters.

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