Тема: namespaces
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Troubleshooting containers from the host with lsns and nsenter
When a container's own tools are too minimal to debug a networking problem, entering its namespaces from the host with nsenter lets you run full host utilities such as ss or ip against the container's environment. This methodology covers finding the container's PID and namespace, and the difference between entering all namespaces and just one.
Машиночитаемо: JSON