Noodling around with HashiCorp's consul.

Verify installation as follows:

$ consul --version
Consul v1.0.7
Protocol 2 spoken by default, understands 2 to 3 (agent will automatically use protocol >2 when speaking to compatible agents)
$

consul may be run in development mode as follows:

$ consul agent -dev

[As usual, Ctrl-C to terminate.]

The consul console should now be available at:

http://localhost:8500

Register service:

$ curl --request PUT --data @sample.json http://localhost:8500/v1/catalog/register

Curl service:

$ curl http://localhost:8500/v1/catalog/service/redis

Dig service:

$ dig @127.0.0.1 -p 8600 redis.service.consul

Deregister service:

$ curl --request PUT --data @sample.json http://localhost:8500/v1/catalog/deregister

Some useful stuff here:

https://www.consul.io/docs/guides/consul-containers.html

Official image

Consul uses HashiCorp's serf, but provides some useful features on top of what serf can provide.

Consul uses the following ports:

There is also an HTTPS port, but it usually seems to be set to -1.

Like many other HashiCorp products, there is only a single binary.

Which simplifies deployment ... the client and the server are the same docker image.

Servers are specified with the -server option.

Install dependencies:

$ go get github.com/hashicorp/consul/api

Voluminous documentation here.

Some inspiration here, but not actually very useful:

http://varunksaini.com/consul-service-discovery-golang/