A web server to route requests in a Kubernetes cluster to a corresponding Service based upon routes describes in a JSON configuration file.

Itself runs as a container within a kubernetes cluster with the path to the configuration file and options passed as command-line arguments.

--domain-suffixes Domain suffixes, comma separated. Default: .local

--kubernetes-dns-domain Kubernetes DNS domain. Default: cluster.local

--kubernetes-namespace Kubernetes namespace to server. Default: default

--static Whether to enable the proxy to serve content from a static file server. Default: false

--static-scheme Scheme of the static file server. Default: http

--static-host Hostname of the static file server. Default: ``

--static-path Path prefix of the static file server. Default: /

--fallback Whether to enable a fallback proxy. Default: false

--fallback-scheme Fallback scheme. Default: http

--fallback-host Fallback host. Default: ``

--fallback-path Fallback path. Default: /

--routes Absolute path to the routes file. Default: ``

--concurrency concurrency per host. Default: 32

--timeout dial timeout.

To log stats to Datadog, set the DD_AGENT_SERVICE_HOST_PORT environment variable.

The routes.json file is a JSON object with hostnames as top-level keys. Each hostname references an object with path prefixes as keys. Each path prefix is a key to a pattern.

{
  "example.com": {
  	"/": "<pattern>"
  }
}

Possible patterns are as follows.

rm -Rf ./Godeps
rm -Rf ./vendor
go get ./...
go get -u ./...
godep save ./...
godep update ./...

There's a shell script to get a local server running. First set up your $GOPATH, then clone the repo into $GOPATH/src/github.com/newsdev/kubernetes-dns-reverse-proxy

export GOPATH=~/gocode
mkdir -p $GOPATH/src/github.com/newsdev/
cd $GOPATH/src/github.com/newsdev
git clone git@github.com:newsdev/kubernetes-dns-reverse-proxy.git
cd kubernetes-dns-reverse-proxy
./test/demo.sh

This boots a copy of the kubernetes-dns-reverse-proxy server on localhost:8080, and the test server on localhost:8090 (this echos back the Host heeader provided).

Hit http://www.127.0.0.1.xip.io:8080/projects/app1 and check your local logs. You'll see this route to service1 as specified in the routes.

Try http://www.127.0.0.1.xip.io:8080/projects/app2. This should route to service 2.

go test ./...

TK