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What do you understand by Puppet in DevOps?

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It is a configuration management tool that is used for automating administration tasks. Puppet makes use of the Master-Slave architecture in which the two entities communicate via an encrypted channel.

System admins need to perform a lot of repetitive tasks, notably installing and configuring servers. Writing scripts for automating such tasks is an option but it becomes hectic when the infrastructure is large. Configuration management is a great workaround for this.

Puppet helps in configuring, deploying, and managing servers. Not only does it make such redundant tasks easier but also cuts a significant portion of the total work time. The mature configuration management tool:

  1. Continuously checks whether the needed configuration for a host is in place or not. If altered, the configuration is automatically reverted back
  2. Defines distinct configurations for every host
  3. Does dynamic scaling (up and down) of machines
  4. Provides control over all the configured machines so that a centralized change can automatically get propagated to all of them
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