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Ambassador

Ambassador is an API Gateway for microservices built on Envoy. Key features in Ambassador include:

  • Ability to flexibly map public URLs to services running inside a Kubernetes cluster
  • Simple setup and configuration
  • Integrated monitoring
  • All the load balancing, observability, and protocol support of Envoy

To get started, visit http://www.getambassador.io, or join our Gitter channel.

Mapping

Ambassador is built around the idea of mapping resources (in the REST sense) to services (in the Kubernetes sense). A resource is identified by a URL prefix -- for example, you might declare that any URL beginning with /user/ identifies a "user" resource. A service is code running in Kubernetes that can handle the resource you want to map.

What's in this repo

If you clone this repository, you'll have access to multiple Kubernetes resource files:

  • ambassador-rest.yaml defines the main Ambassador server itself;
  • ambassador-store.yaml defines the persistent storage that Ambassador uses to remember which services are running;
  • ambassador-sds.yaml defines the Envoy Service Discovery Service that Ambassador relies on; and finally,
  • ambassador.yaml wraps up all of the above.

Additionally, you can choose either

  • ambassador-https.yaml, which defines an HTTPS-only service for talking to Ambassador and is recommended, or
  • ambassador-http.yaml, which defines an HTTP-only mechanism to access Ambassador.