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Deploying in Unforgiving Environments (Control Your Dependencies) (the network is a dependency)

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/(robbkidd)/ twitter.com/$1 github.com/$1

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History

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Configker

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Chef-Server

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Chef-Solo

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Patterns for Getting Stuff on Your Servers

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remote_file

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The Essential remote_file remote_file "/opt/sauce/sauce_#{node[:sauce][:version]}.tgz" do source "#{node[:sauce][:url]}/awesome_sauce_#{node[:sauce][:version]}.tgz" end

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Better: Give It a Checksum remote_file "/opt/sauce/sauce_#{node[:sauce][:version]}.tgz" do source "#{node[:sauce][:url]}/awesome_sauce_#{node[:sauce][:version]}.tgz" * checksum node[:sauce][:checksum] end

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Ever Better: Put It in the Chef Cache # v-------------------------------v * remote_file "#{Chef::Config[:file_cache_path]}/sauce_#{node[:sauce][:version]}.tgz" do source "#{node[:sauce][:url]}/awesome_sauce_#{node[:sauce][:version]}.tgz" checksum node[:sauce][:checksum] end

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packaging

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fpm

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Example Packaging Step fpm -s dir \ -t deb \ --name awesome_sauce \ --version "$(shell git describe --always --tag)" \ --before-install ./etc/preinst.sh \ --deb-upstart ./etc/saucy \ --config-files /etc/saucy.yml \ ./bin/saucy=/usr/bin/ \ saucy.yml.sample=/etc/saucy/

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shelling out

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RVM 4 custom RVM install ahead of chef-rvm 4 install RVM via tarball according to the offline steps 4 rvm mount ruby-version.tgz 4 carry on with our uses of chev-rvm 4 rvm-shell mostly

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python's default.rb include_recipe "python::#{node['python']['install_method']}" include_recipe "python::pip" include_recipe "python::virtualenv"

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python_shim.rb %w(python-pip python-virtualenv).each do |pkg| package pkg do action :install end end link "/usr/local/bin/pip" do to "/usr/bin/pip" end directory "/root/.pip/" file "/root/.pip/pip.conf" do content "[global]\ntimeout = 1\n" end

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Getting Stuff on Your Servers (Review) 4 remote_file 4 packages 4 shelling out :(

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A Tale of Three Caches

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Library Cache

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bundle package (for ruby peeps)

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Package Cache

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apt-cacher-ng

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Chef Cache

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vagrant-cachier

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monkeypatch

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class ::Chef class Provider class RemoteFile class Content < Chef::FileContentManagement::ContentBase private def current_resource_matches_target_checksum? ::Chef::Log.info("Airgapped - skipping content checksum for #{@new_resource}") true end end end end end

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Mo' Better? (things I haven't got working yet)

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chef-client --local-mode

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Shim Cookbook AntiPattern?

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no 3rd party cookbooks?

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omnibus packages?

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containers?

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Shoulders of Giants Mark Olson - Lookingglass Eric Sproul - Circonus

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Review 4 history 4 recipe patterns 4 caching tricks 4 future possibilities

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Payoff 4 works without access to network resources 4 chef convergence is faster! 4 chef convergence is predictable!

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4 Mind the Gap photo by Clicsouris 4 Vagrant - Mitchell Hashimoto/Hashicorp 4 vagrant-cachier - Fabio Rehm 4 fpm - Jordan Sissell 4 knife-solo - Mat Schaffer