Multi nodes vagrant setup for Docker and Weave testing.
This Vagrant project allows you to easily setup and test multiple configuration of Docker and Weave.
vagrant-docker-weave repo available at: https://github.com/BrunoBonacci/vagrant-docker-weave
Authors:
- Bruno Bonacci
We will have to execute a number of different commands in different boxes. To easily identify which box are we referring to we will follow this convension:
$ echo "this is the host machine, like your laptop"
node2$ echo "this is a command to execute in the Vagrant node2"
cnt1$ echo "this command is to be run inside the container1"
To start the cluster run:
$ vagrant up
To ssh into any of the three nodes just type:
$ vagrant ssh <node_name>
Example, to ssh into node 3 type:
$ vagrant ssh node3
To access a specific container first you need to ssh into the node which is hosting the container, then run
$ docker attach <container-id>
the container-id can be retrieved with
$ docker ps
To stop the cluster:
$ vagrant halt
To dispose the cluster
$ vagrant destroy
You can start the cluster of nodes with:
$ vagrant up
This will start 3 nodes with a host-only network set up on 20.20.20.21/24.
Every node will have docker and weave pre-installed.
Generally we are going to try to create a network topology for our containers
as the main container network. For this reason our container will be started
specifying --net=none to Docker to instruct it to not create the default container's network.
Where this is not possible I will highlight case by case.
For a more interative session I do suggest to open at least three independent terminal windows and ssh into all three nodes. Then you can choose any of the following sample and run the node setup scripts.
- Simple network - single network with three containers on a private network
- Two isolated networks - two networks which are isolated from each other.
- Exposing a network - how to give access to a network from the outside world.
- Network with DNS - Sample of Weave DNS with docker containers
Copyright © 2015 B. Bonacci
Distributed under the Apache License v 2.0 (http://www.apache.org/licenses/LICENSE-2.0)