Even in container world, I still find Ansible/Chef useful for a number of low-level system tuning tasks. Things like setting NUMA affinities, modifying kernel p

Even in container world, I still find Ansible/Chef useful for a number of low-level system tuning tasks. Things like setting NUMA affinities, modifying kernel parameters, setting IRQ interrupts, loading kernel modules, setting NIC parameters, etc. That kind of stuff is often overlooked, but done right can have pretty dramatic performance impact.