{"chapters":["change history","preface","acknowledgments","introduction","getting started with vagrant","rails on puppet","basic capistrano","advanced capistrano","monitoring with nagios","collecting metrics with ganglia","maintaining the application","running rubies with rvm","special topics","a capistrano case study","running on unicorn and nginx","acknowledgements","capistrano case study","unicorn and nginx","monitoring","metrics","maintenance","rvm","getting started with vagrant and puppet","organizing puppet with modules","introducing puppet","getting started with puppet","setting up 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