Puppet
Puppet is a configuration management tool written in Ruby. It is designed to make it easier to deploy servers and scale applications across a network and does so using a custom declarative language. It has both open-source and commercial (closed-source) versions.
Puppet does four basic things. First, it provides a place for you to define the desired state for your infrastructure’s configuration. Second, Puppet simulates changes before enforcing them. Third, Puppet enforces the desired state automatically, making corrections for drifting configurations. Finally, Puppet gives you a report on the differences between the actual and desired states before you make any changes.
A site called Puppet Forge (listed in Resources) provides access ...
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