![Explicit Lookup
• source ['one.erb', 'two.erb']
• source [
"host-#{node['fqdn']}/name",
"#{node['platform']}-#{node['platform_version']}/name",
"#{node['platform']}/name",
"default/name",
]](https://image.slidesharecdn.com/chef-20dialects-131113160109-phpapp01/85/Chef-Dialects-15-320.jpg)
Chef Dialects
- 2. 10KM View • Hooks to load from non-.rb Improvements to layout •
- 3. Dialect Hooks • Recipes Attributes • Metadata • • Roles • Data bags
- 4. Rules • Side effect based • Ruby classes • File extension, MIME type
- 5. Cookbook Dialects • • depends 'dialect-js' attributes/default.yml • • recipes/default.js Distributed as cookbooks
- 6. dialect-js template('/tmp/foo', { source: 'foo.erb', owner: 'root', variables: {msg: node.msg} })
- 8. Knife Dialects • Distributed as gems, knife plugins • gem install knife-dialect-erbyaml • knife role from file web.yml • knife data bag from file users jdoe.yml
- 9. Current Dialects • Javascript, based on therubyracer/V8 • Python, incomplete, based on ffi + libpython • JSON • YAML and ERB+YAML • ...
- 10. Current Dialects • Javascript, based on therubyracer/V8 • Python, incomplete, based on ffi + libpython • JSON • YAML and ERB+YAML • Puppet (soon)
- 11. Next steps • chef_fs for knife upload and chef-client -z • More dialects • Perl? • Java? • TOML? • Templates?
- 12. Layout Shortcuts • attributes/default.rb ➡ attributes.rb • recipes/default.js ➡ recipe.js • libraries/default.rb ➡ library.rb
- 14. Default lookup • source 'foo.erb' • host-fqdn/foo.erb • platform-version/foo.erb • platform/foo.erb • default/foo.erb • foo.erb ☺☺☺
- 15. Explicit Lookup • source ['one.erb', 'two.erb'] • source [ "host-#{node['fqdn']}/name", "#{node['platform']}-#{node['platform_version']}/name", "#{node['platform']}/name", "default/name", ]
- 16. Putting It All Together my-postgresql/ attributes.json metadata.yml recipe.py templates/ postgresql.conf.erb