[Howto] Introduction to Puppet
Introduction
In our daily work at the Open Source Support Center we maintain quite large numbers of servers. Especially when it comes to the management of larger clusters or larger setups this means maintaining dozens of machines which have more or less an identical configuration, varying only in small aspects - if at all. Without a central configuration management this would mean repeating the same step on and on on all machines when you just have to change a small part of the configuration. And here, Puppet comes into play.
As with all the configuration management tools out there Puppet also uses a central server which manages the configuration. The clients query the server via an encrypted connection on a regular base for new configuration. If anew configuration is found, it is imported as the server instructs: the client imports new files, modifies rights, starts services and executes commands, whatever the server says. The advantages are obvious:
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