Why kube-proxy and kube-router pods have the same IP as my host

All about k0s
#1

Hi,

Why can the kube-proxy and the kube-router pods get the same IP as my host? Neither of them has an associated service. How do get achieved this? Also, does this mean I can access these pods directly from my host?

Thanks

#2

Both of those pods are running in the host network namespace. If you look at the pod definitions you can sse this:

hostNetwork: true

This is why the pod reports it’s IP as the same as the host.

#3

Thanks a lot.

Can I ask why they have to connect to the host network? I think it is the first time seeing some pods using that network option.

#4

They are running on the host network as they need to be able to configure networking at the host level.

For example kube-proxy needs to be able to create the ClusterIPs using iptables

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