Can not make MetalLB work with kube-router

[vladimirtiukhtin]

Is this a bug report or a feature request?:

More likely a feature

What happened:

MetalLb works perfect with kube-proxy but not with kube-router

What you expected to happen:

It is possibly a kube-router issue, but I expected load balancer just work

How to reproduce it (as minimally and precisely as possible):

Flush your iptables rules, stop kube-proxy, substitute it with kube-router

[danderson]

Yup, see #160. kube-router and metallb are known to be incompatible, because of cloudnativelabs/kube-router#242 . MetalLB relies on kube-proxy (or its equivalent) to program the dataplane on every node, and kube-router currently does not. There's nothing I can really do about this, other than wait for kube-router to support loadBalancer endpoints.

[vladimirtiukhtin]

@danderson thanks for your prompt response. I noticed as well, that kube-proxy can not work with metallb in ipvs mode. I tried ARP mode and kube-proxy in iptables mode and it works. Switching to ipvs breaks connectivity. Possibly because iptables does DNAT on prerouting stage when ipvs requires packet to be accepted by kernel

[danderson]

Yup, that's #153. I haven't had time to diagnose it yet, but I suspect IPVS mode in kube-proxy might also be ignoring LoadBalancer IPs.