Puppet – server management made easy

Resources:
Puppet – Open source data centre automation and configuration management framework
ERB – Powerful templating system for Ruby
Puppet Recipes – Recipes for configuring Puppet
Puppet Dashboard – Web interface and reporting tool for Puppet

If you have more than a handful of servers, maintaining them by hand becomes a tedious task. Of course, you can automate this with shell scripts, but this is an ad hoc solution. Puppet can help you to reach a more consistent way of managing your servers. All your configuration changes are made in a central repository and pushed to your various servers, which can be Linux, BSD or Solaris. There are lot of ready-made Puppet modules to configure various system components, and everyone can write their own Puppet modules.

Read more at LinuxUser

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