# octocatalog-diff: GitHub’s Puppet development and testing tool – GitHub Engineering

- **期号**: SRE Weekly Issue #46（2016-10-30）
- **作者**: —
- **链接**: http://githubengineering.com/octocatalog-diff-github-s-puppet-development-and-testing-tool/

## 简介

How many times have you pushed out a puppet change that you tested very thoroughly, only to find that it did something unexpected on a host you didn’t even think it would apply to? Etsy’s solution to that is this tool that shows catalog changes for all host types in your fleet in a diff-style format.

## 正文

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