The docker host is still addressable as 127.0.0.1 - from the virtual machine - from the outside world (i.e.This virtual machine runs unix, so can perfectly happily act as the docker host.A virtual machine running unix (called in this case a 'docker machine') called 'default' has been created (by convention with the IP 192.168.99.100).Oracle VirtualBox has been installed to create and manage virtual machines.
Instead, an extra layer and component is introduced: MacOS and the Windows OS don't have the same kernel level support for process isolation, control groups and so on, so the Docker Host cannot run on these operating systems. This is all great, but things get a little harder on a Mac or Windows. The container was created on my machine (in the host) and addressable using my loopback IP. If I want to create and connect to a MySQL DB from my machine, I just type:ĭocker run -d -e MYSQL_ROOT_PASSWORD= 123 -p 3306: 3306 mysql The containers also have the IP of the host. The Docker host is actually my machine - I can connect using the loopback IP 127.0.0.1 (i.e. Some containers in the Docker Host - one is based on a MySQL image and has a DB, one is based on a Node.js image and is running an app.the Docker Host, which runs the docker daemon, which actually does the work of starting/stopping/building containers and so on. The docker executable, which I use to issue commands to.My machine, called Dave-Ubuntu, which is running Ubuntu 2, with a local IP 192.168.0.1.This is described in detail on the Understand the Docker Architecture page, but essentially means we can do this: If you don't know what Docker is, check out my article Learn Docker by Building a Microservice or the lovely What is Docker page from the docs.Īssuming you know what Docker is you, may be aware that Docker creates processes in isolated containers using some key unix technologies which allow for low-level isolation (such as namespaces and cgroups 1). I've finally had a chance to install the new Docker for Mac Beta and give it a whirl, here are my experiences so far!īelow: The welcome message for the new Docker for Mac app
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