huichen/consistent_service

Service discovery, consistent hashing, data duplication

Consistent Service

This library provides

• service containerization with docker
• service discovery and automatic registration/deregistartion with etcd and registrator
• service node assignment with consistent hashing

Prerequisite

1. Install docker on your machines

2. Launch an etcd cluster

Do it your way or the easiest way via etcd_docker

3. Install registrator on all machines in the cluster

docker run -d --name=registrator --net=host --volume=/var/run/docker.sock:/tmp/docker.sock
  gliderlabs/registrator etcd://<your etcd endpoint ip:port>/services

Note: all services will be registered under etcd's /services keyspace.

Run example

Start a few busybox containers with different ports

docker run -it -p 8081:8081 busybox
docker run -it -p 8082:8082 busybox

Go to example dir and

go run main.go --endpoints=http://<your etcd endpoint ip:port> --service_name=/services/busybox

Then stop/restart a few containers and check how a service node is assigned accordingly.