3.4. Installing SIMP From A Repository

Using the official SIMP YUM repositories is the simplest method for getting up and running with SIMP on an existing infrastructure. If you are using a virtual infrastructure, such as AWS, Microsoft Azure, Google Cloud, or your own internal VM stack, this is the method that you will want to use.


This method does not modify your system’s partitioning scheme or encryption scheme to meet any regulatory policies. If you want an example of what that should look like either see the Installing SIMP from an ISO or check out the Kickstart files in the simp-core Git repository.

3.4.1. Enable EPEL


RHEL systems will need to enable the EPEL Repositories manually.

$ sudo yum install epel-release -y
$ sudo yum install pygpgme yum-utils

3.4.2. Install The SIMP-Project Repositories

Add the following to /etc/yum.repos.d/simp-project.repo, replacing 6 with the appropriate version of SIMP. If the repo file does not exist, create it. The repo file contents for SIMP 6.X is shown below.

If you don’t know what versions map together, please see the SIMP Version Guide.


RHEL Users should replace $releasever below with the actual release version.

This would be 7 for RHEL 7 and 6 for RHEL 6


The ‘dependencies’ repository may contain items from external vendors, most notably Puppet, Inc. and EPEL but may also contain non-SIMP project files that have been compiled for distribution.


The whitespace and alignment shown before the additional gpgkey values must be preserved



3.4.3. Rebuild The Yum Cache

$ sudo yum makecache

3.4.4. Install the SIMP Server

  1. Select the simp-adapter package appropriate for the version of Puppet you will be using
    • simp-adapter-foss: Version appropriate for FOSS Puppet
    • simp-adapter-pe: Version appropriate for Puppet Enterprise
  2. Install the simp-adapter package
$ sudo yum install -y simp-adapter-foss
  1. Install the remaining SIMP packages
$ sudo yum install -y simp


The simp RPM installs the SIMP core Puppet modules. Breaking changes in these modules trigger a breaking change update in SIMP itself.

There are a large number of additional ‘extra’ modules that may be individually installed. Search for pupmod via yum to discover what is available.

If you wish to install all of the extra modules, you can simply run sudo yum install -y simp-extras

3.4.5. Configure and Bootstrap the SIMP Server

  1. su to root
  2. Type simp config and configure the system as prompted.
  • simp config will prompt you for system settings and then apply the smallest settings subset that is required to bootstrap the system.
  • When applicable, simp config will present you with a recommendation for each setting. To keep a recommended value, press Enter. Otherwise, enter your desired value.
  • simp config generates a log file containing details of the configuration selected and actions taken.
  • For more details about the installation variables set by simp config and the corresponding actions, see Initial Configuration.
  • For a list of additional options, type simp help config.
    • simp config --dry-run will run through all of the simp config prompts without applying any changes to the system. This is the option to run to become familiar with the variables set by simp config or generate a configuration file to be used as a template for subsequent simp config runs.
    • simp config -a <Config File> will load a previously generated configuration in lieu of prompting for settings, and then apply the settings. This is the option to run for systems that will be rebuilt often.


Once simp config has been run, three SIMP configuration files will be generated:

  • /root/.simp/simp_conf.yaml: File containing all your simp config settings; can include additional settings related to ones you entered and other settings required for SIMP.
  • /etc/puppetlabs/code/environments/simp/hieradata/simp_config_settings.yaml: File containing global hieradata relevant to SIMP clients and the SIMP server.
  • /etc/puppetlabs/code/environments/simp/hieradata/hosts/<host>.yaml: SIMP server host YAML file.
  1. Type simp bootstrap


If progress bars are of equal length and the bootstrap finishes quickly, a problem has occurred. This is most likely due to an error in SIMP configuration. Refer to the previous step and make sure that all configuration options are correct.

  1. Reboot your system
$ reboot

3.4.6. Bootstrap SIMP Clients

Use the runpuppet script from the newly created SIMP server to bootstrap your clients. That script can be acquired in one of two ways:

  1. Use a SIMP server as a kickstart server, see Client Management for details on how to take advantage of SIMP to make this easier.

  2. If another server is to be used as a kickstart server, you can still use our distributed and tested provisioning script, runpuppet.

    Add the simp::server::kickstart::runpuppet class to your kickstart server node to use runpuppet. The file can be placed in an existing web server by setting the location parameter. Here’s an example that could be placed in a kickstarting profile class:

    class { 'simp::server::kickstart::runpuppet':
      location => '/var/www/web/server/path/runpuppet'


This would be the general technique that you would use to auto-bootstrap your clients via user-data scripts in cloud environments.

You should take care to ensure that your environment is protected prior to running the runpuppet script across the Internet. You may want to package it as a signed RPM specific to your environment and deploy it independently.

Be ready to sign your client credentials as systems check in with the server!

Run the script on a client. This example assumes the first option from above:

# Remove the ``--insecure`` option if your system has a certificate signed
# by a well-known CA.

$ curl --insecure https://<puppet.server.fqdn>/ks/runpuppet | bash