Links

Why?

● Most containers only need to communicate with other containers

● Only expose the frontend to the public

Stack

Todo MVCFlask python appRequires rethinkdbPublish port 5000

RethinkDBExpose port 27015Publish port 8080

Environment

Links will expose the child container’s exposed ports, ip, and environment to the parent.

Environment vars are prefixed with the alias of the child i.e.

DB_PORT_27015_TCP=tcp://xxx.x...:27015

Starting Rethinkdbdocker run -d -p 8080 -name rethinkdb -e NAME=todo crosbymichael/rethinkdb --bind all

Publish the admin ui to the host, keep everything else internally.0.0.0.0:49155->8080/tcp, 28015/tcp, 29015/tcp

Starting the frontend

docker run -d -p 5000 -link rethinkdb:db -name todo frontend

#python code using a client libproto, ip, port = docker.require_port('db', 28015)database_name = docker.require_env('db', 'name')

Codegithub.com/crosbymichael/docker-links-backbone-todo