Add Klipper ServiceLB addon

[gw0]

Summary

MicroK8s is advertised to support multi-region HA clusters and run on bare metal instances, but is missing an addon load balancer suitable for this scenario. I stumbled upon Klipper ServiceLB which from reading the docs seems like a decent solution if there isn't much traffic, see:

• https://docs.k3s.io/networking#service-load-balancer
• https://github.com/k3s-io/klipper-lb

Why is this important?

Regarding load balancers, MicroK8s only has an MetalLB addon that is unsuitable for the multi-region cluster of bare metal instances (requires shared LAN/VPC).

Are you interested in contributing to this feature?

No. It seems to require integration with MicroK8s itself?

[zacbayhan]

I have not worked with Klipper, but you (or someone else) might find the following links interesting.

https://microk8s.io/docs/addon-metallb

https://metallb.universe.tf

Do you have a need that metallb doesn't fill?

[gw0]

Do you have a need that metallb doesn't fill?

From my understanding MetalLB supports only Layer 2 mode (requires that all instances are in the same LAN/VPC) and BGP mode (requires control over BGP routing). None of these are useful if one wants to have K8s nodes spread across multiple regions (even cloud providers and random data centers) consisting of simple bare metal instances.

[zacbayhan]

Thanks for the follow-up, let me do a little reading on klipper and I'll follow up.