autodock 0.0.2

Daemon for Docker Automation

autodock is a Daemon for Docker Automation.

autodock is MIT licensed.

Installation

Either pull the automatically updated Docker image:

$ docker pull prologic/autodock

Or install from the development repository:

$ git clone https://github.com/prologic/autodock.git
$ cd autodock
$ pip install -r requirements.txt

Plugins

autodock comes with a number of plugins where each piece of functionality is provided by a separate plugin. Each plugin is “linked” to autodock to receive Docker events and issue new Docker API commands. The following list is a list of the currently available plugins for production use:

• autodock-cron – Provides a Cron-like scheduler for Containers

• autodock-logger – Logs Dockers Events

• autodock-hipache – Automatically registers virtualhosts with hipache

Example #1 – Logging Docker Events

Note

See: autodock Logger plugin

Start the daemon:

$ docker run -d -v /var/run/docker.sock:/var/run/docker.sock --name autodock:autodock prologic/autodock

Link and start an autodock plugin:

$ docker run -i -t --link autodock prologic/autodock-logger

Now whenever you start a new container autodock will listen for Docker events. The autodock-logger plugin will log all Docker Events received by autodock.

Example #2 – Automatic Virtual Hosting with hipache

Note

See autodock Hipache plugin

Start the daemon:

$ docker run -d --name autodock prologic/autodock

Link and start an autodock plugin:

$ docker run -d --link autodock prologic/autodock-hipache

Now whenever you start a new container autodock will listen for Docker events and discover containers that have been started. The autodock-hipache plugin will specifically listen for starting containers that have a VIRTUALHOST environment variable and reconfigure the running hipache container.

Start a “Hello World” Web Application:

$ docker run -d -e VIRTUALHOST=hello.local prologic/hello

Now assuming you had hello.local configured in your /etc/hosts pointing to your hipache container you can now visit http://hello.local/

echo "127.0.0.1 hello.local" >> /etc/hosts
curl -q -o - http://hello.local/
Hello World!

Note

This method of hosting and managing webapps and websites is in production deployments and talked about in more detail in the post A Docker-based mini-PaaS.

Example #3 – Cron-like Scheduling of Containers

Note

See autodock Cron plugin

Start the daemon:

$ docker run -d --name autodock prologic/autodock

Link and start an autodock plugin:

$ docker run -d --link autodock prologic/autodock-cron

Now whenever you create a new container autodock will listen for Docker events and discover containers that have been created. The autodock-cron plugin will specifically listen for created containers that have a CRON environment variable and schedule a job based on the cron expression supplied and re-run that container when its scheduled has triggered.

Start a “Hello” Busybox Container:

$ docker run -i -t --name hello busybox sh -c "echo Hello"

After about three minutes or so you should see the following in the logs:

$ docker logs hello
Hello
Hello
Hello