Docker Docker Docker Chef

Transcript

1. 1.

   Docker Docker Docker Chef

2. 2.

   Config Management Camp Ghent, Belgium February 2016

3. 3.

   Sean OMeara sean@chef.io @someara

4. 4.

   whoami

5. 5.

   Part 1

6. 6.

   Remember the time

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   Remember that time we didn’t need configuration management because we

   had packaging?
8. 8.

   Remember that time the cloud came out and we didn’t

   need sysadmins?
9. 9.

   Remember that time when we didn’t need schemas because we

   had MongoDB?
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    Repeat after me

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    CONFIGURATION MANAGEMENT AND IMMUTABLE INFRASTRUCTURE ARE NOT MUTUALLY EXCLUSIVE

12. 12.

    Say it again

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    CONFIGURATION MANAGEMENT AND IMMUTABLE INFRASTRUCTURE ARE NOT MUTUALLY EXCLUSIVE

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    We good?

15. 15.

    The Docker cookbook

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    Configuration Management is not restricted to files, directories, packages and

    services
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    Configuration Management tests and repairs any programmable noun

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    Images are nouns

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    Containers are nouns

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    hello world

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    https://flic.kr/p/br26Cb Setup v0.0.1

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    Install ChefDK

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    git clone https:// github.com/someara/chef- docker-tutorial

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    kitchen test

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    git checkout v0.0.1 git checkout v0.1.0 git checkout v0.1.1 git

    checkout v0.2.0 git checkout v0.2.1 git checkout v0.3.0 git checkout v0.3.1
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    https://flic.kr/p/s684tk Feature v0.1.0

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    metadata.rb

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    .kitchen.yml

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    recipes/hello.rb

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    kitchen converge hello kitchen login hello docker images docker ps

    -a docker logs hello-world
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    git add . git commit -a -m “v0.1.0 - hello”

    git tag v0.1.0
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    https://flic.kr/p/53stX2 Patch v0.1.1

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    Bug report: “hello is not idempotent”

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    kitchen converge hello kitchen converge hello

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    kitchen login hello docker ps -a docker logs hello-world

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    hello-world exits after every run

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    This is expected!

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    http://gliderlabs.com/

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    recipes/hello.rb

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    rubocop \ && rspec \ && kitchen test hello

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    metadata.rb

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    git add . git commit -a -m “v0.1.1 - hello”

    git tag v0.1.1
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    an echo server https://flic.kr/p/6WtX6X

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    https://flic.kr/p/s684tk Feature v0.2.0

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    Recipe work Kitchen work Behavior testing Unit Final Acceptance Commit

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    .kitchen.yml

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    recipes/echo.rb

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    Docker Containers have 40+ (and growing) runtime API options

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    None
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    kitchen converge echo kitchen converge echo kitchen login echo docker

    images docker ps -a docker logs an_echo_server docker inspect an_echo_server echo "hi" | nc localhost 7
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    test/integration/echo/inspec/run_spec.rb

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    rubocop \ && rspec \ && kitchen test echo

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    metadata.rb

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    git add . git commit -a -m “v0.2.0 - echo”

    git tag v0.2.0
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    https://flic.kr/p/dRGr3t Patch v0.2.1

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    Security team recommends a change… Service should listen on explicitly

    defined interfaces
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    kitchen converge echo kitchen login echo netstat -anp

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    Listening on :::7 Let’s fix that.

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    recipes/echo.rb

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    test/integration/echo/inspec/run_spec.rb

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    rubocop \ && rspec \ && kitchen test echo

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    metadata.rb

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    git add . git commit -a -m “v0.2.1 - echo

    patch” git tag v0.2.1
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    https://flic.kr/p/ayDujN notifications and subscriptions

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    https://flic.kr/p/cNdyo Feature v0.3.0

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    recipes/web.rb

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    recipes/web.rb

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    kitchen converge web kitchen converge web kitchen login web docker

    images docker ps -a curl localhost docker logs bob
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    test/integration/web/inspec/run_spec.rb

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    rubocop \ && rspec \ && kitchen test web

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    metadata.rb

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    git add . git commit -a -m “v0.3.0 - web”

    git tag v0.3.0
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    https://flic.kr/p/o9c2G3 Patch v0.3.1

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    Marketing team recommends a change… Bob wasn’t there.

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    kitchen converge web kitchen login web curl localhost

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    Bob was here. Let’s fix that.

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    recipes/web.rb

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    test/integration/echo/inspec/run_spec.rb

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    rubocop \ && rspec \ && kitchen test web

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    metadata.rb

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    git add . git commit -a -m “v0.3.1 - echo

    patch” git tag v0.3.1
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    Part 2

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    kitchen-dokken http://on.mtv.com/1ls5SRc

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    Experimental status Soon to be renamed something less clever

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    Removes bootstrap overhead Uses Docker volumes Chef not baked into

    images Works on Travis
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    https://github.com/someara/ kitchen-dokken/

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    Install ChefDK chef gem install kitchen-dokken

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    git clone https://github.com/ someara/hello_dokken

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    kitchen list docker ps -a

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    None
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    kitchen create docker ps -a

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    Chef container Data container Runner container

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    docker run \ —volumes-from chef \ —volumes-from data \ imagename

    \ chef-client
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    docker diff suitename

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    https://travis-ci.org/ someara/etcd-cookbook

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    fin

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    None