chef-docker


Description

Installs/Configures Docker. Please see COMPATIBILITY.md for more information about Docker versions that are tested and supported by cookbook versions along with LWRP features.

This cookbook was inspired by @thoward's docker-cookbook: https://github.com/thoward/docker-cookbook

Breaking Change Alert

In version 1.0 of this cookbook, we will be making a significant breaking changes including the way that we handle the custom resources (docker_image, docker_container and docker_registry). It is highly recommended that you constrain the version of the cookbook you are using in the appropriate places.

• metadata.rb
• Chef Environments
• Berksfile
• Chef Policyfile

More details about specific changes will be documented in the 1.0_CHANGES.md file.

Requirements

Chef

• Chef 11+

Platforms

• Amazon 2014.03.1 (experimental)
• CentOS 6
• Debian 7
• Fedora 19, 20
• Mac OS X (only docker installation currently)
• Oracle 6
• RHEL 6
• Ubuntu 12.04, 12.10, 13.04, 13.10, 14.04 (experimental)

Cookbooks

Opscode Cookbooks

• apt
• git
• homebrew
• yum-epel

Third-Party Cookbooks

• aufs
• device-mapper
• golang
• lxc
• modules
• sysctl

Usage

Default Installation

• Add recipe[docker] to your node's run list

Execution Drivers

If your system is running a Docker version before 0.9, you'll need to explicitly set up LXC outside of this cookbook. This will likely be true for most distros after Docker 1.0 and chef-docker 1.0 is released.

• lxc on community site
• lxc on Github

Storage Drivers

Beginning in chef-docker 1.0, storage driver installation and configuration is expected to be handled before this cookbook's execution, except where required by Docker.

AUFS

If you need AUFS support, consider adding the aufs cookbook to your node/recipe before docker.

• aufs on community site
• chef-aufs on Github

Then, set the storage_driver attribute of this cookbook to aufs.

device-mapper

If you need device-mapper support, consider adding the device-mapper cookbook to your node/recipe before docker.

• device-mapper on community site
• chef-device-mapper on Github

Then, set the storage_driver attribute of this cookbook to devicemapper (please note lack of dash).

Ubuntu 14.04 Package Installation via Docker PPA

By default, this cookbook will use the docker.io package from Ubuntu 14.04's repository. To use the Docker PPA package, just set the repo_url attribute to the Docker PPA URL. e.g. node.set['docker']['package']['repo_url'] = 'https://get.docker.io/ubuntu'

Attributes

Installation/System Attributes

These attributes are under the node['docker'] namespace.

Attribute	Description	Type	Default
arch	Architecture for docker binary (note: Docker only currently supports x86_64)	String	auto-detected (see attributes/default.rb)
group_members	Users to manage in node['docker']['group']	Array of Strings	[]
init_type	Init type for docker ("runit", "systemd", "sysv", or "upstart")	String	auto-detected (see attributes/default.rb)
install_dir	Installation directory for docker binary (custom setting only valid for non-package installations)	String	auto-detected (see attributes/default.rb)
install_type	Installation type for docker ("binary", "package" or "source")	String	package
ipv4_forward	Sysctl set net.ipv4.ip_forward to 1	TrueClass, FalseClass	true
ipv6_forward	Sysctl set net.ipv6.conf.all.forwarding to 1	TrueClass, FalseClass	true
version	Version of docker	String	nil

Binary Installation Attributes

These attributes are under the node['docker']['binary'] namespace.

Attribute	Description	Type	Default
checksum	Optional SHA256 checksum for docker binary	String	auto-detected (see attributes/default.rb)
version	Version of docker binary	String	node['docker']['version'] (if set) or latest
url	URL for downloading docker binary	String	http://get.docker.io/builds/#{node['kernel']['name']}/#{node['docker']['arch']}/docker-#{node['docker']['binary']['version']}

Package Installation Attributes

These attributes are under the node['docker']['package'] namespace.

Attribute	Description	Type	Default
action	Action for docker packages ("install", "update", etc.)	String	install
distribution	Distribution for docker packages	String	auto-detected (see attributes/default.rb)
name	Override Docker package name	String	auto-detected (see attributes/default.rb)
repo_url	Repository URL for docker packages	String	auto-detected (see attributes/default.rb)
repo_key	Repository GPG key URL for docker packages	String	https://get.docker.io/gpg

Source Installation Attributes

These attributes are under the node['docker']['source'] namespace.

Attribute	Description	Type	Default
ref	Repository reference for docker source	String	master
url	Repository URL for docker source	String	https://github.com/dotcloud/docker.git

Docker Daemon Attributes

For more information: http://docs.docker.io/en/latest/reference/commandline/cli/#daemon

These attributes are under the node['docker'] namespace.

Attribute	Description	Type	Default
api_enable_cors	Enable CORS headers in API	TrueClass, FalseClass	nil
bind_socket (DEPRECATED)	Socket path that docker should bind	String	unix:///var/run/docker.sock
bind_uri (DEPRECATED)	TCP URI docker should bind	String	nil
bip	Use this CIDR notation address for the network bridge's IP, not compatible with bridge	String	nil
bridge	Attach containers to a pre-existing network bridge; use 'none' to disable container networking	String	nil
debug	Enable debug mode	TrueClass, FalseClass	nil (implicitly false)
dns	DNS server(s) for containers	String, Array	nil
dns_search	DNS search domain(s) for containers	String, Array	nil
exec_driver	Execution driver for docker	String	nil (implicitly native as of 0.9.0)
graph	Path to use as the root of the docker runtime	String	nil (implicitly /var/lib/docker)
group	Group for docker socket and group_members	String	nil (implicitly docker)
host	Socket(s) that docker should bind	String, Array	unix:///var/run/docker.sock
http_proxy	HTTP_PROXY environment variable	String	nil
icc	Enable inter-container communication	TrueClass, FalseClass	nil (implicitly true)
insecure-registry	List of well-known insecure registries	String, Array	nil
ip	Default IP address to use when binding container ports	String	nil (implicitly 0.0.0.0)
iptables	Enable Docker's addition of iptables rules	TrueClass, FalseClass	nil (implicitly true)
logfile	Set custom DOCKER_LOGFILE	String	nil
mtu	Set the containers network MTU	Fixnum	nil (implicitly default route MTU or 1500 if no default route is available)
no_proxy	NO_PROXY environment variable	String	nil
options	Additional options to pass to docker. These could be flags like "-api-enable-cors".	String	nil
pidfile	Path to use for daemon PID file	String	nil (implicitly /var/run/docker.pid)
ramdisk	Set DOCKER_RAMDISK when using RAM disk	TrueClass or FalseClass	false
registry-mirror	List of docker registry mirrors	String, Array	nil
restart (DEPRECATED)	Restart containers on boot	TrueClass or FalseClass	auto-detected (see attributes/default.rb)
selinux_enabled	Enable SELinux	TrueClass or FalseClass	nil
storage_driver	Storage driver for docker	String	nil
storage_opt	Storage driver options	String, Array	nil
tls	Use TLS	TrueClass, FalseClass	nil (implicitly false)
tlscacert	Trust only remotes providing a certificate signed by the CA given here	String	nil (implicitly ~/.docker/ca.pem)
tlscert	Path to TLS certificate file	String	nil (implicitly ~/.docker/cert.pem)
tlskey	Path to TLS key file	String	nil (implicitly ~/.docker/key.pem)
tlsverify	Use TLS and verify the remote (daemon: verify client, client: verify daemon)	TrueClass, FalseClass	nil (implicitly false)
tmpdir	TMPDIR environment variable	String	nil

LWRP Attributes

These attributes are under the node['docker'] namespace.

Attribute	Description	Type	Default
docker_daemon_timeout	Timeout to wait for the docker daemon to start in seconds for LWRP commands	Fixnum	10

docker_container Attributes

These attributes are under the node['docker'] namespace.

Attribute	Description	Type	Default
container_cmd_timeout	container LWRP default cmd_timeout seconds	Fixnum	60
container_init_type	Init type for docker containers (nil, "runit", "systemd", "sysv", or "upstart")	String	node['docker']['init_type']

docker_image Attributes

These attributes are under the node['docker'] namespace.

Attribute	Description	Type	Default
image_cmd_timeout	image LWRP default cmd_timeout seconds	Fixnum	300

docker_registry Attributes

These attributes are under the node['docker'] namespace.

Attribute	Description	Type	Default
registry_cmd_timeout	registry LWRP default cmd_timeout seconds	Fixnum	60

Recipes

• recipe[docker] Installs/Configures Docker
• recipe[docker::aufs] Installs/Loads AUFS Linux module
• recipe[docker::binary] Installs Docker binary
• recipe[docker::cgroups] Installs/configures default platform Control Groups support
• recipe[docker::devicemapper] Installs/Configures Device Mapper
• recipe[docker::group] Installs/Configures docker group
• recipe[docker::lxc] Installs/configures default platform LXC support
• recipe[docker::package] Installs Docker via package
• recipe[docker::runit] Installs/Starts Docker via runit
• recipe[docker::source] Installs Docker via source
• recipe[docker::systemd] Installs/Starts Docker via systemd
• recipe[docker::sysv] Installs/Starts Docker via SysV
• recipe[docker::upstart] Installs/Starts Docker via Upstart

LWRPs

• docker_container: container operations
• docker_image: image/repository operations
• docker_registry: registry operations

Getting Started

Here's a quick example of pulling the latest image and running a container with exposed ports (creates service automatically):

# Pull latest image
docker_image 'samalba/docker-registry'

# Run container exposing ports
docker_container 'samalba/docker-registry' do
  detach true
  port '5000:5000'
  env 'SETTINGS_FLAVOR=local'
  volume '/mnt/docker:/docker-storage'
end

Maybe you want to automatically update your private registry with changes from your container?

# Login to private registry
docker_registry 'https://docker-registry.example.com/' do
  username 'shipper'
  password 'iloveshipping'
end

# Pull tagged image
docker_image 'apps/crowsnest' do
  tag 'not-latest'
end

# Run container
docker_container 'crowsnest'

# Save current timestamp
timestamp = Time.new.strftime('%Y%m%d%H%M')

# Commit container changes
docker_container 'crowsnest' do
  repository 'apps'
  tag timestamp
  action :commit
end

# Push image
docker_image 'crowsnest' do
  repository 'apps'
  tag timestamp
  action :push
end

See full documentation for each LWRP and action below for more information.

docker_container

Below are the available actions for the LWRP, default being run.

These attributes are associated with all LWRP actions.

Attribute	Description	Type	Default
cmd_timeout	Timeout for docker commands (catchable exception: Chef::Provider::Docker::Container::CommandTimeout)	Integer	node['docker']['container_cmd_timeout']
command	Command to run in or identify container	String	nil
container_name	Name for container/service	String	nil

docker_container action :commit

These attributes are associated with this LWRP action.

Attribute	Description	Type	Default
author	Author for commit	String	nil
message	Message for commit	String	nil
repository	Remote repository	String	nil
run	Configuration to be applied when the image is launched with docker run	String	nil
tag	Specific tag for image	String	nil

Commit a container with optional repository, run specification, and tag:

docker_container 'myApp' do
  repository 'myRepo'
  tag Time.new.strftime("%Y%m%d%H%M")
  run '{"Cmd": ["cat", "/world"], "PortSpecs": ["22"]}'
  action :commit
end

docker_container action :cp

These attributes are associated with this LWRP action.

Attribute	Description	Type	Default
destination	Host path to copy file	String	nil
source	Container path to get file	String	nil

Copying a file from container to host:

docker_container 'myApp' do
  source '/path/to/container/file'
  destination '/path/to/save/on/host'
  action :cp
end

docker_container action :create

By default, this will handle creating a service for the container when action is create, run or start. set['docker']['container_init_type'] = false or add init_type false for LWRP to disable this behavior.

Attributes for this action can be found in the run action (except for the detach attribute).

docker_container action :export

These attributes are associated with this LWRP action.

Attribute	Description	Type	Default
destination	Host path to save tarball	String	nil

Exporting container to host:

docker_container 'myApp' do
  destination '/path/to/save/on/host.tgz'
  action :export
end

docker_container action :kill

These attributes are associated with this LWRP action.

Attribute	Description	Type	Default
cookbook	Cookbook to grab any templates	String	docker
init_type	Init type for container service handling	FalseClass, String	node['docker']['container_init_type']
init_template	Template to use for init configuration	String	nil
signal	Signal to send to the container	String	nil (implicitly KILL)
socket_template	Template to use for configuring socket (relevent for init_type systemd only)	String	nil

Kill a running container:

docker_container 'shipyard' do
  action :kill
end

Send SIGQUIT to a running container:

docker_container 'shipyard' do
  signal 'QUIT'
  action :kill
end

docker_container action :redeploy

Stops, removes, and runs a container. Useful for notifications from image build/pull.

Attributes for this action can be found in the stop, remove, and run actions.

Redeploy container when new image is pulled:

docker_image 'shipyard/shipyard' do
  action :pull
  notifies :redeploy, 'docker_container[shipyard]', :immediately
end

docker_container 'shipyard' do
  # Other attributes
  action :run
end

docker_container action :remove

These attributes are associated with this LWRP action.

Attribute	Description	Type	Default
cookbook	Cookbook to grab any templates	String	docker
force	Force removal	TrueClass, FalseClass	nil
init_type	Init type for container service handling	FalseClass, String	node['docker']['container_init_type']
init_template	Template to use for init configuration	String	nil
socket_template	Template to use for configuring socket (relevent for init_type systemd only)	String	nil

Remove a container:

docker_container 'shipyard' do
  action :remove
end

docker_container action :remove_link

These attributes are associated with this LWRP action.

Attribute	Description	Type	Default
link	Link to remove from container	String	nil

Remove a container:

docker_container 'shipyard' do
  link 'foo'
  action :remove_link
end

docker_container action :remove_volume

These attributes are associated with this LWRP action.

Attribute	Description	Type	Default
volume	Volume(s) to remove from container	String, Array	nil

Remove a container:

docker_container 'shipyard' do
  volume %w(/extravol1 /extravol2)
  action :remove_volume
end

docker_container action :restart

These attributes are associated with this LWRP action.

Attribute	Description	Type	Default
cookbook	Cookbook to grab any templates	String	docker
init_type	Init type for container service handling	FalseClass, String	node['docker']['container_init_type']
init_template	Template to use for init configuration	String	nil
socket_template	Template to use for configuring socket (relevent for init_type systemd only)	String	nil

Restart a container:

docker_container 'shipyard' do
  action :restart
end

docker_container action :run

By default, this will handle creating a service for the container when action is create, run or start. set['docker']['container_init_type'] = false or add init_type false for LWRP to disable this behavior.

These attributes are associated with this LWRP action.

Attribute	Description	Type	Default
additional_host	Add a custom host-to-IP mapping (host:ip)	String, Array	nil
attach	Attach container's stdout/stderr and forward all signals to the process	TrueClass, FalseClass	nil
cidfile	File to store container ID	String	nil
container_name	Name for container/service	String	nil
cookbook	Cookbook to grab any templates	String	docker
cpu_shares	CPU shares for container	Fixnum	nil
detach	Detach from container when starting	TrueClass, FalseClass	nil
dns	DNS servers for container	String, Array	nil
dns_search	DNS search domains for container	String, Array	nil
entrypoint	Overwrite the default entrypoint set by the image	String	nil
env	Environment variables to pass to container	String, Array	nil
env_file	Read in a line delimited file of ENV variables	String	nil
expose	Expose a port from the container without publishing it to your host	Fixnum, String, Array	nil
hostname	Container hostname	String	nil
image	Image for container	String	LWRP name
init_type	Init type for container service handling	FalseClass, String	node['docker']['container_init_type']
init_template	Template to use for init configuration	String	nil
link	Add link to another container	String, Array	nil
label	Options to pass to underlying labeling system	String	nil
lxc_conf	Custom LXC options	String, Array	nil
memory	Set memory limit for container	Fixnum	nil
net	Configure networking for container	String	nil
networking (DEPRECATED)	Configure networking for container	TrueClass, FalseClass	true
opt	Custom driver options	String, Array	nil
port	Map network port(s) to the container	Fixnum (DEPRECATED), String, Array	nil
privileged	Give extended privileges	TrueClass, FalseClass	nil
public_port (DEPRECATED)	Map host port to container	Fixnum	nil
publish_exposed_ports	Publish all exposed ports to the host interfaces	TrueClass, FalseClass	false
remove_automatically	Automatically remove the container when it exits (incompatible with detach)	TrueClass, FalseClass	false
restart	Restart policy for the container (no, on-failure, always)	String	nil
socket_template	Template to use for configuring socket (relevent for init_type systemd only)	String	nil
stdin	Attach container's stdin	TrueClass, FalseClass	nil
tty	Allocate a pseudo-tty	TrueClass, FalseClass	nil
user	User to run container	String	nil
volume	Create bind mount(s) with: [host-dir]:[container-dir]:[rw	ro]. If "container-dir" is missing, then docker creates a new volume.	String, Array
volumes_from	Mount all volumes from the given container(s)	String	nil
working_directory	Working directory inside the container	String	nil

Run a container:

docker_container 'myImage' do
  detach true
end

Run a container via command:

docker_container 'busybox' do
  command 'sleep 9999'
  detach true
end

Run a container from image (docker-registry for example):

docker_container 'docker-registry' do
  image 'samalba/docker-registry'
  detach true
  hostname 'docker-registry.example.com'
  port '5000:5000'
  env 'SETTINGS_FLAVOR=local'
  volume '/mnt/docker:/docker-storage'
end

docker_container action :start

These attributes are associated with this LWRP action.

Attribute	Description	Type	Default
attach	Attach container's stdout/stderr and forward all signals to the cookbook	Cookbook to grab any templates	String
init_type	Init type for container service handling	FalseClass, String	node['docker']['container_init_type']
init_template	Template to use for init configuration	String	nil
socket_template	Template to use for configuring socket (relevent for init_type systemd only)	String	nil
stdin	Attach container's stdin	TrueClass, FalseClass	nil

Start a stopped container:

docker_container 'shipyard' do
  action :start
end

docker_container action :stop

These attributes are associated with this LWRP action.

Attribute	Description	Type	Default
cookbook	Cookbook to grab any templates	String	docker
init_type	Init type for container service handling	FalseClass, String	node['docker']['container_init_type']
init_template	Template to use for init configuration	String	nil
socket_template	Template to use for configuring socket (relevent for init_type systemd only)	String	nil

Stop a running container:

docker_container 'shipyard' do
  action :stop
end

docker_container action :wait

Wait for a container to finish:

docker_container 'busybox' do
  command 'sleep 9999'
  action :wait
end

docker_image

Below are the available actions for the LWRP, default being pull.

These attributes are associated with all LWRP actions.

Attribute	Description	Type	Default
cmd_timeout	Timeout for docker commands (catchable exception: Chef::Provider::Docker::Image::CommandTimeout)	Integer	node['docker']['image_cmd_timeout']

docker_image action :build and :build_if_missing

These attributes are associated with this LWRP action.

Attribute	Description	Type	Default
dockerfile (DEPRECATED)	Dockerfile to build image	String	nil
image_url (DEPRECATED)	URL to grab image	String	nil
no_cache	Do not use the cache when building the image	TrueClass, FalseClass	false
path (DEPRECATED)	Local path to files	String	nil
rm	Remove intermediate containers after a successful build	TrueClass, FalseClass	false
source	Source dockerfile/directory/URL to build	String	nil
tag	Optional tag for image	String	nil

Build image from Dockerfile:

docker_image 'myImage' do
  tag 'myTag'
  source 'myImageDockerfile'
  action :build_if_missing
end

Build image from remote repository:

docker_image 'myImage' do
  source 'example.com/foo/myImage'
  tag 'myTag'
  action :build_if_missing
end

Conditionally rebuild image if changes upstream:

git "#{Chef::Config[:file_cache_path]}/docker-testcontainerd" do
  repository '[email protected]:bflad/docker-testcontainerd.git'
  notifies :build, 'docker_image[tduffield/testcontainerd]', :immediately
end

docker_image 'tduffield/testcontainerd' do
  action :pull_if_missing
end

docker_image action :import

These attributes are associated with this LWRP action.

Attribute	Description	Type	Default
image_url (DEPRECATED)	URL to grab image	String	nil
repository	Optional repository	String	nil
source	Source file/directory/URL	String	nil
tag	Optional tag for image	String	nil

Import image from local directory:

docker_image 'test' do
  source '/path/to/test'
  action :import
end

Import image from local file:

docker_image 'test' do
  source '/path/to/test.tgz'
  action :import
end

Import image from remote URL:

docker_image 'test' do
  source 'https://example.com/testimage.tgz'
  action :import
end

docker_image action :insert

ACTION DEPRECATED AS OF DOCKER 0.10.0

These attributes are associated with this LWRP action.

Attribute	Description	Type	Default
destination	Destination path/URL	String	nil
source	Source path/URL	String	nil

Insert file from remote URL:

docker_image 'test' do
  source 'http://example.com/some/file.txt'
  destination '/container/path/for/some/file.txt'
  action :insert
end

docker_image action :load

These attributes are associated with this LWRP action.

Attribute	Description	Type	Default
input	Image source (via tar archive file)	String	nil
source	Image source (via stdin)	String	nil

Load repository via input:

docker_image 'test' do
  input '/path/to/test.tar'
  action :load
end

Load repository via stdin:

docker_image 'test' do
  source '/path/to/test.tgz'
  action :load
end

docker_image action :pull and :pull_if_missing

These attributes are associated with this LWRP action.

Attribute	Description	Type	Default
registry	Optional registry server	String	nil
tag	Optional tag for image	String	nil

Pull latest image every Chef run:

docker_image 'busybox'

Pull latest image only if missing:

docker_image 'busybox' do
  action :pull_if_missing
end

Pull tagged image:

docker_image 'bflad/test' do
  tag 'not-latest'
end

docker_image action :push

Push image (after logging in with docker_registry):

docker_image 'bflad/test' do
  action :push
end

docker_image action :remove

These attributes are associated with this LWRP action.

Attribute	Description	Type	Default
force	Force removal	TrueClass, FalseClass	nil
no_prune	Do not delete untagged parents	TrueClass, FalseClass	nil

Remove image:

docker_image 'busybox' do
  action :remove
end

docker_image action :save

These attributes are associated with this LWRP action.

Attribute	Description	Type	Default
destination	Destination path (via stdout)	String	nil
output	Destination path (via file)	String	nil
tag	Save specific tag	String	nil

Save repository via file to path:

docker_image 'test' do
  destination '/path/to/test.tar'
  action :save
end

Save repository via stdout to path:

docker_image 'test' do
  destination '/path/to/test.tgz'
  action :save
end

docker_image action :tag

These attributes are associated with this LWRP action.

Attribute	Description	Type	Default
force	Force operation	Boolean	false
repository	Remote repository	String	nil
tag	Specific tag for image	String	nil

Tag image:

docker_image 'test' do
  repository 'bflad'
  tag '1.0.0'
  action :tag
end

docker_registry

These attributes are associated with all LWRP actions.

Attribute	Description	Type	Default
cmd_timeout	Timeout for docker commands (catchable exception: Chef::Provider::Docker::Registry::CommandTimeout)	Integer	node['docker']['registry_cmd_timeout']

docker_registry action :login

These attributes are associated with this LWRP action.

Attribute	Description	Type	Default
email	Registry email	String	nil
password	Registry password	String	nil
username	Registry username	String	nil

Log into or register with public registry:

docker_registry 'https://index.docker.io/v1/' do
  email '[email protected]'
  username 'publicme'
  password 'hope_this_is_in_encrypted_databag'
end

Log into private registry with optional port:

docker_registry 'https://docker-registry.example.com:8443/' do
  username 'privateme'
  password 'still_hope_this_is_in_encrypted_databag'
end

Testing and Development

• Quickly testing with Vagrant: VAGRANT.md
• Full development and testing workflow with Test Kitchen and friends: TESTING.md

Contributing

Please see contributing information in: CONTRIBUTING.md

Maintainers

• Tom Duffield (http://tomduffield.com)
• Brian Flad ([email protected])
• Fletcher Nichol ([email protected])

License

Please see licensing information in: LICENSE