3.2. System Requirements

The scalability of SIMP correlates to the scalability of Puppet. From the Puppet tuning guide, a number of factors contribute to scalability, including:

  • Speed and quantity of available hardware

  • Number of nodes, and frequency of check-in

  • Number of modules in your module path

  • Amount of hieradata

Official hardware requirements for your SIMP server:

  • At least 3.4 GB of RAM + swap.

With less than 3.4 GB it is possible for either the puppet database or puppet server to not start.

We recommend the following hardware requirements for your SIMP server:

  • 2 CPUs and 6 GB of RAM, at a minimum

  • 2 - 4 CPUs and 10 GB of RAM to serve up to 1,000 nodes

The SIMP team recommends allocating the latter, in addition to a minimum of 50 GB HDD space. Again, these are not hard requirements, but anything less may not leave adequate room for logs, applications, rsync data, etc.


If you want to optimize the Puppet server, the Puppet tuning guide is a good place to start. Use the advanced memory debugging guide for further optimization.