This document discusses system administration for Ruby developers using tools like Puppet, Chef, RVM, and Babushka. It describes setting up a simple server for a Rails application manually or with configuration management tools. It then discusses test-driven system administration, using Babushka to define dependencies between tasks and share configurations between servers.

1. @gazay

2. system administration
for rubists

3. setup server
• manually
• puppet
• chef
• gitpusshuten
• babushka
• etc…

4. manually

5. chef & puppet

6. simple setup one server for
rails app

9. test-driven sysadmin

11. nested

13. test-driven?
test code

14. test task

15. $ ruby --version
ruby 1.8.7 …
$ rvm use 1.9.2
Using ruby 1.9.2 p0
$ ruby --version
ruby 1.9.2p0 …

16. $ ruby --version
ruby 1.8.7 …
test
$ rvm use 1.9.2
Using ruby 1.9.2 p0 task
$ ruby --version
ruby 1.9.2p0 … test

17. dependency
$ ruby --version
ruby 1.8.7 …
$ rvm use 1.9.2
Using ruby 1.9.2 p0

18. shell( ‘ruby –version’ )[ ‘ruby 1.9.2 p0’ ]
shell( ‘rvm use 1.9.2’ )

19. met? {
shell( ‘ruby –version’ )[ ‘ruby 1.9.2 p0’ ]
}
shell( ‘rvm use 1.9.2’ )

20. met? {
shell( ‘ruby –version’ )[ ‘ruby 1.9.2 p0’ ]
}
meet {
shell( ‘rvm use 1.9.2’ )
}

21. dep ‘ruby 1.9.2 in use’ do
met? {
shell( ‘ruby –version’ )[ ‘ruby 1.9.2 p0’ ]
}
meet {
shell( ‘rvm use 1.9.2’ )
}
end

22. nested

23. dep ‘ruby 1.9.2 in use’ do
requires ‘1.9.2 rvm ruby’
met? {
shell( ‘ruby –version’ )[ ‘ruby 1.9.2 p0’ ]
}
meet {
shell( ‘rvm use 1.9.2’ )
}
end

24. dep ‘1.9.2 rvm ruby’ do
requires ‘rvm’
met? {
shell( ‘rvm list’ )[ ‘ruby-1.9.2-p0’ ]
}
meet {
shell( ‘rvm install 1.9.2’ )
}
end

25. dep ‘rvm’ do
met? {
which ‘rvm’
}
meet {
shell 'bash -c "`curl http://
rvm.beginrescueend.com/releases/rvminstall-
head`"'
}
end

26. dep 'Cucumber.tmbundle' do
source 'git://github.com/bmabey/cucumber
tmbundle.git'
end

27. sharing
dep 'setup-user' do
requires [
'benhoskings:passwordless ssh logins',
'benhoskings:hostname',
'benhoskings:secured ssh logins',
'benhoskings:admins can sudo‘
]
end

28. git://github.com/ benhoskings /babushka-deps

29. railsrumble stack

30. thanks!