Puppet Labs released a command-line interface & set of APIs last week, called Faces, that allows sysadmins to create or extend subcommands and actions for Puppet. The API is callable from Ruby and includes objects that expose Puppet’s internal subsystem. Sysadmins can access Puppet objects like report to create, display and submit reports, and catalog to compile, save, view and convert catalogs.
FlightCaster recently open sourced Crane, a tool for distributing and remotely controlling Clojure instances, currently specialized for EC2. Incanter is a Clojure library and tool that makes R-like statistical computations easy with Clojure. Also: the build and dependency management tool Leiningen 1.0 is now available.
Managing libraries and dependencies is tedious. Clojars is a new hosted repository for Clojure libraries inspired by Ruby Gems and Gemcutter. Together with a new build tool, Leiningen, Clojars takes the pain out of library management. InfoQ talked to Alex Osborne about Clojars and how it works.
Documentation generator Yard's 0.4 release adds new features such as a live documentation server which allows users to comment on the docs. The new tool Gem Bundler allows flexible dependency management.
For years the norm for developers was to work in an iterative and incremental manner but for database developers to work in a more serial manner. The predominance of evolutionary development methods make it clear that the two groups need to work in the same manner to be productive as a team. Pramod presents material from "Refactoring Databases " on implementing evolutionary database development.
In this presentation filmed during QCon SF 2008, Dan Farino, Chief Systems Architect at MySpace, talked about administering thousands of web servers from a system’s architect viewpoint. He mostly detailed the performance counter monitoring used by MySpace, the system profiler and the system administration site demoing the tools for the audience to see how it works.
Chef, a new Ruby-based configuration and provisioning tool, has been announced. Chef offers integration with multiple tools and platforms across extended networks, using "cookbooks" to define how to install and update applications across large networks like large web server farms, or cloud-computing platforms.
In this presentation, Ian Flint, Director of Operations for Bix, Yahoo!’s online contest service, tries to explain the infrastructure and architecture employed by Yahoo! to keep going a multitude of servers running of different platforms and offering different services.
In this interview taken by InfoQ’s Ryan Slobojan, Dan Farino, Chief Systems Architect at MySpace, talks about the system architecture and the challenges faced when building a very large online community. Because MySpace is built almost entirely on the .NET Framework, Dan explains how a .NET product scales on hundreds of servers.
Kenai is a new project hosting platform from Sun. It offers a comprehensive set of services for open source projects, including source code management and issue-tracking, and most notably, it is built with JRuby on Rails.
Continuous integration is an agile practice in which each code change committed is automatically built and tested, reducing the cost of bugs by catching many of them as soon as they are introduced. Today, ThoughtWorks released Cruise, extending continuous integration to application testing and deployment. Cruise runs on Windows, Mac OS X and Linux, and includes support for .NET, Java, and Ruby.
Agile brings to organizations, among other things, small teams coupled with constant change. Navigating this effectively requires understanding what this means to Software Configuration Management practices. The July edition of CM Journal's "cm//crossroads" is dedicated to helping people meet this challenge successfully.
Subversion, a mature open source version control system used by many open source projects, has just released version 1.5. New features include: merge tracking, sparse checkouts, and conflict resolution in the command line client.
Many agree that the minimum set of Agile practices includes disciplined version control. In particular, when several development teams work in the same codebase, to ensure there's a clean, releasable version at the end of every iteration, they need a plan. Henrik Kniberg's proven scheme is a useful guide for teams. This detailed paper includes the entire method and even a cheatsheet.
There has been a lot of discussion on various agile forums and blogs about the difference between 'Done' and 'Shippable'. It might sound like both mean the same, however discussions on the lists and various blogs suggest that these are still widely misunderstood, mis-used terms. Here's a roundup of recommendations about how to handle "Done."