Puppet Module to manage SELinux on RHEL machines
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README.markdown

SELinux Puppet Module

Build Status

This module can set SELinux and compile SELinux type enforcement files (.te) into modules deploying them to running RHEL based system. It allows you to keep .te files in text form in a repository, while allowing the system to compile and manage SELinux modules.

This module features:

  • all enforcing/permissive/disabled switch covered
  • ability to select selinux module directory
  • a file context file (.fc) can be used with a type enforcement (.te) one
  • error detection: it will not silently fails to compile or load a module
  • once loaded, it will not create a new catalog for each run
  • it will only try to load a module if loaded and source version are different.
  • module enable/disable (stay loaded)
  • cleanup if you remove your module
  • puppet lint compliant code
  • full spec testing

SELinux boolean are not part of this module as there's a resource type (selboolean) that puppet provides. This module use the other SELinux resource type, selmodule to load the module.

This project has been forked from https://github.com/spiette/puppet-selinux as we needed a version that worked this Centos7. The original project appears to have been abandonded.

Requirements

  • puppet >= 2.7
  • RedHat/Fedora based distribution

Installation

puppet module install continuent/selinux

Synopsys

selinux class

include selinux
class { 'selinux':
  mode => 'permissive'
}

Parameters:

  • mode

    (enforced|permissive|disabled) sets the operating state for SELinux.

  • installmake

    make is required to install modules. If you have the make package declared elsewhere, you want to set this to false. It defaults to true.

selinux::module

selinux::module { 'rsynclocal':
  source   => 'puppet:///modules/site/rsynclocal'
}

This will place the .te (and .fc if present) file(s) on the target machine, compile into a .pp and load the module. source will be set to puppet:///modules/selinux/${name} by default.

selinux::module { 'rsynclocal':
  ensure => 'disabled'
}

This keep the module installed but disabled. You can also disable system modules.

selinux::module { 'rsynclocal':
  ensure => 'enabled'
}

Note: ensure => present include ensure => enabled

selinux::module { 'rsynclocal':
  ensure => 'absent'
}

This will remove all files related to rsynclocal on the target system.

Parameters

  • ensure

    (present|enabled|disabled|absent) - set the state for a module

  • modules_dir

    The directory where modules (source files, .mod and .pp) will live on a system. Defaults to $vardir/selinux, can be changed in $selinux::params.

  • source

    Source directory (either a puppet URI or local file) of the SELinux .te module. Defaults to puppet:///modules/selinux/${name}

  • ignore

    If you want to exclude files of your selinux module to be transferred to the node (.svn directories for example), you can add a string to exclude or a list of pattern, eg. [ 'CVS', '.svn' ]. Defaults to nothing: all files will be copied. You can use resource defaults if you always want to ignore the same pattern:

      Selinux::Module {
        ignore => [ 'CVS', '.svn' ]
      }
      

SELinux reference

  • selinux(8)
  • man -k selinux for module specific documentation
  • audit2allow(1) to build your modules with audit log on permissive mode
  • selboolean, selmodule resources type from puppet
  • selrange, selrole, seltype, seluser parameters for the file resource type

Performance impact

Many SELinux commands are slow to execute, especially on changes. Your puppet run could last a couple of minutes if you add a dozen of modules in one shot. If you're using modules, each time semdule -l will run (2 seconds easily), just to look if your module is loaded.

Contribute

Please see the Github page. We'll review pull requests and bug reports. If the module don't do what you want, please explain your use case. Please submit your pull requests in the pullrequest branch and make sure tests are running.

Credits