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Puppet Essentials by Felix Frank

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Exporting resources to other agents

Puppet is commonly used to configure whole clusters of servers or HPC workers. Any configuration management system makes this task very efficient in comparison to manual care. Manifests can be shared between similar nodes. Configuration items that require individual customization per node are modeled individually. The whole process is very natural and direct.

On the other hand, there are certain configuration tasks that do not lend themselves well to the paradigm of the central definition of all states. For example, a cluster setup might include the sharing of a generated key or registering IP addresses of peer nodes as they become available. An automatic setup should include an exchange of such shared information. ...

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