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Prominent venture firm Kleiner Perkins Caufield & Byers announced that it’s backing Puppet Labs, the company behind an open source data center management tool called Puppet, by leading a new $5 million round of funding.

The Portland, Ore. company (formerly known as Reductive Labs) says a number of important organizations already use Puppet, including Digg, Twitter, Genentech, Oracle/Sun, and Stanford University. It’s supposed to be a simplified tool for systems administrators that “takes the pain out of manually configuring servers.” Puppet makes it easy to describe the configuration of a company’s current servers, and therefore repeat that configuration on new systems. And since it’s open source, Puppet also includes hundreds of free, community-developed modules.

Puppet Labs says it has thousands of users, and that it has more than 60 customers for its product support, training, and professional servers. The company is also releasing the latest update to Puppet today, version 2.6, which includes a number of features to make Puppet palatable to large enterprises.

The company has now raised more than $7 million. Previous investors True Ventures and Radar Partners participated in the round.

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