Kubernetes and eBPF
Kubernetes, as you know very well, is a very versatile and flexible platform. The Kubernetes developers, in their wisdom, avoided making many assumptions and decisions that could later paint them into a corner. For example, Kubernetes networking operates at the IP and DNS levels only. There is no concept of a network or subnets. Those are left for networking solutions that integrate with Kubernetes through very narrow and generic interfaces like CNI.
That opens the door to a lot of innovation because Kubernetes doesn’t constrain the choices of implementors.
Enter ePBF. It is a technology that allows running sandboxed programs safely in the Linux kernel without compromising the system’s security or requiring you to make changes to the kernel itself or even kernel modules. These programs execute in response to events. This is a big deal for software-defined networking, observability, and security. Brendan Gregg calls it the Linux super-power...
