k8s-http-router
Warning: this project is very new and might have some issues. We have been using it successfully in our testing clusters for a couple of months. Bug reports are welcome!g
This project has been pulled from the new Gondor backend built on Kubernetes. It simply routes HTTP requests to Kubernetes services using the HTTP Host header. Additional configuration can be specified, but nothing else is currently supported.
Setup
To get k8s-http-router running on your Kubernetes cluster you can use the following replication controller:
kind: ReplicationController
apiVersion: v1beta3
metadata:
name: router
spec:
replicas: 3
selector:
name: router
template:
metadata:
labels:
name: router
spec:
containers:
- name: router
image: quay.io/eldarion/k8s-http-router
ports:
- name: router-http
containerPort: 80
- name: router-https
containerPort: 443
and service:
kind: Service
apiVersion: v1beta3
metadata:
name: router
labels:
name: router
spec:
selector:
name: router
ports:
- name: router-http
port: 80
- name: router-https
port: 443
createExternalLoadBalancer: true
To add a service to route, use the router annotation:
kind: Service
apiVersion: v1beta3
metadata:
name: my-website
labels:
name: my-website
annotations:
router: '{"config": {}, "hosts": ["example.com"]}'
spec:
selector:
name: my-website
ports:
- port: 80
targetPort: 8000
k8s-http-router will watch for service changes and keep its internal data structures up-to-date with changes in the Kubernetes service objects.
Credit
Thanks to Google for the amazing Kubernetes project.
Thanks to the flynn project for a great router design this is inspired by, but stripped down and modified for Kubernetes.
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