cyber-forge-xds-balancer

This repository provides a hands-on demonstration of setting up an xDS (eXtensible Discovery Service) server tailored for use with the Envoy Proxy. It showcases a basic yet functional configuration to help you get started with service discovery and dynamic configuration.

Sample Config File

This a sample YAML file that defines the xDS configuration. This includes listener setup, routing logic, and cluster endpoint specifications.

name: sample-config
spec: 
  listeners:
  - name: listener_0
    address: 0.0.0.0
    port: 9000
    routes:
    - name: echo-route
      prefix: /
      clusters:
      - echo-cluster
  clusters:
  - name: echo-cluster
    endpoints:
    - address: 127.0.0.1
      port: 9101
    - address: 127.0.0.1
      port: 9102

This configuration initializes a listener on port 9000, routes requests to an endpoint cluster named echo-cluster, and specifies two backend services on ports 9101 and 9102.

Running Sample Applications

To test the xDS server functionality, you can deploy lightweight echo servers as backend services. Use Docker to spin up these sample apps, which act as endpoints:

docker run -d --rm --name=echo9100 -p 9100:8080 miledxz/echo-server echo-server --echotext=Sample-Endpoint!
docker run -d --rm --name=echo9101 -p 9101:8080 miledxz/echo-server echo-server --echotext=Sample-Endpoint!

Stopping Sample Applications

Stop all the sample endpoints created in the previous step:

docker stop echo9100
docker stop echo9101