GitHub - joesonw/homemade-external-load-balancer: External Load Balancer for kub...

README.md

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Introduction

At work, we all have AWS ELB, Aliyun SLB, etc. What if we just want to have a k8s cluster up running at home with this nice feature?

I give yout HELB(Homemade External Load-Balancer). It provides dynamic resolved dns names for your services on your machine, accessible private or public.

How to use?

This is a simple demonstration of how it could be deployed (at least how I deployed).

My scenario was having a domain name, and I want to load balance my services/apps with dynamic resolved dns rather than configure it each time by hand.

Because I access it through LAN/OpenVPN only, I set it up with a private LAN ip (if you want to use it on the public internet, you could implement ip.Interface by requesting public ip services for the proxy to use)

I have a traefik reverse proxy for all the requests. Services will be found, resolved ad route to traefik.

In any case I have my ip changed, or your internet is ADSL (changes ip each time?). There is a nameserver module where it monitors ip, and update it to DNS providers periodically.

see install for a basic deployment

Following is how to annotate services so they could be picked up by HELB

apiVersion: v1
kind: Service
metadata:
  annotations:
    helb/alias: aria2
    helb/enable: "true"
    helb/port: http
  name: aria2
  namespace: default
spec:
  ports:
  - name: http
    port: 80
    protocol: TCP
    targetPort: 6800
  selector:
    app: aria2
  type: LoadBalancer