This repository illustrates the use of dynamic routing configuration (RDS) of the Envoy proxy.

It accompanies a forthcoming blog post.

It is based on the front proxy example code from the Envoy proxy repository, documented in the
envoy docs.

Version 1.9.0 of Envoy is used here, rather than latest.

Assuming that Docker as well as Docker Compose are installed, run the example using

cd front-proxy
docker-compose up --build -d
curl localhost:8000/service/1
curl localhost:8000/service/2
docker-compose down

RDS has a statistics tree rooted at http.<stat_prefix>.rds.<route_config_name>, see https://www.envoyproxy.io/docs/envoy/v1.9.0/configuration/http_conn_man/rds

The statistics is available at http://localhost:8001/stats, in Prometheus format at http://localhost:8001/stats/prometheus.

Filebeat is installed and configured in the front proxy Docker image to send the logs from Envoy to a logstash instance.