envoy-experiments's Introduction

Envoy proxy examples and experiments

To run the samples in this project please install the following dependencies:

Shipyard https://shipyard.run
Docker https://docker.io

Simple TCP Load Balancing ./tcp-loadbalancing

This example shows how to loadbalance two Docker containers using Envoy

Simple Routing ./routing-simple

This example shows how to route to two different containers using HTTP path

Simple Routing Kubernetes ./routing-simple-k8s

This example shows how to route to two different containers using HTTP path running in Kubernetes

WASM HTTP Filters for Consul Service Mesh ./wasm-filters

This example shows how WASM HTTP filters can be used with Envoy proxy

Install Shipyard

curl https://shipyard.run/install | bash -s

Create the environment

shipyard run ./wasm-filters

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envoy-experiments's Issues

Empty reply from server when running curl

I have clone the repo and tried to run tcp-loadbalancing

shipyard run ./tcp-loadbalancing

The CLI runs properly, creating 4 containers

docker ps
CONTAINER ID        IMAGE                                 COMMAND                  CREATED             STATUS              PORTS                NAMES
22255205b9a0        shipyardrun/ingress:latest            "ingress --service-n…"   7 seconds ago       Up 5 seconds        0.0.0.0:80->80/tcp   frontend.ingress.shipyard.run
5c7388ad994f        envoyproxy/envoy-alpine:v1.13.1       "/docker-entrypoint.…"   9 seconds ago       Up 7 seconds        10000/tcp            envoy.container.shipyard.run
2644ed8272d8        nicholasjackson/fake-service:v0.8.0   "/app/fake-service"      9 seconds ago       Up 7 seconds                             api1.container.shipyard.run
aa365ad6c278        nicholasjackson/fake-service:v0.8.0   "/app/fake-service"      9 seconds ago       Up 7 seconds                             api2.container.shipyard.run

But curl localhost gives empty server response.

curl localhost
curl: (52) Empty reply from server

Support rust filters in the Envoy proxy of consul

I tried loading a WASM filter written in rust onto consul. Currently, it throws this error: "WASM missing malloc/free". A little digging lead me to this github issue : proxy-wasm/proxy-wasm-rust-sdk#3 . So I guess having consul use the "istio/proxyv2:1.5.0" image of envoy would help support filters in Rust (the ones using the proxy-wasm-rust-sdk) and maybe other languages. Is it possible to generate a consul image that uses this image of envoy?

Thank you

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