tree ed5e75883fc44d14f7824b0a5ed40a6ab650923e
parent e8beaed8dcde2c198e91addb0baa884079363581
author Lorenz Brun <lorenz@monogon.tech> 1738073228 +0100
committer Lorenz Brun <lorenz@monogon.tech> 1739286346 +0000

m/n/k8s: add nftables network policy controller

This integrates my K8s network policy controller. In its current form it
does not have many guarantees as the custom CNI plugin is not yet in
there but it mostly works. Also there is still a DNS hole as host-local
services are not properly policed yet.

It has a basic smoke test using the connectivity testing helper as well
as some metrics to make sure it is integrated properly and to be able to
monitor its performance.

Change-Id: Ia2f54b9975361270678ce742ae5e32df25e515c5
Reviewed-on: https://review.monogon.dev/c/monogon/+/3740
Tested-by: Jenkins CI
Reviewed-by: Jan Schär <jan@monogon.tech>