Synopsis

Security-Enhanced Linux (SELinux) is a Linux kernel security module that provides a mechanism for supporting access control security policies.

cd_selinux is a Puppet module to automate installation, configuration and troubleshooting of selinux.

WARNING

**__!!! Attention: Never use this puppet module on systems which have been previously configured manually. It is impossible to predict how and what would have been configured, hence previuos configurations outside the scope of this module may be overwritten! Automated configurations require a test environment to verify that the module suits the purpose intended by the user, as well as tune the parameters, before deploying into live production!!! __**

Table of Contents

• Features

• Repo Structure

• Dependencies

• Deployment

• native Puppet deployment

• through Foreman

• Parameters

• Mandatory Parameters

• Optional Parameters

• SELINUX

• Known Problems

• Support

• Tests

• Contact Us

• Disclaimer

Features

Installation: * install binaries required for selinux and related tools

Configuration * manage /etc/sysconfig/selinux file (file system permissions, selinux context, content) * manage current selinux status (permissive,enforcing)

Repo Structure

Repostructure has moved to REPOSTRUCTURE.md in repo.

Dependencies

All dependencies must be included in the catalogue.

• cd_resources for yum repo resources.

Deployment

native Puppet deployment

via site.pp or nodes.pp

node 'example.example.net' {
  include cd_selinux
}

through Foreman:

In order to apply parameters through Foreman, cd_selinux::params must be added to the host or hostgroup in question.

See more details about class deployment on Confdroid.com.

Parameters

The following parameters are editable via params.pp or through ENC (recommended). Values changed will take immediate effect at next puppet run. Services will be restarted where neccessary.

Mandatory Parameters

Optional Parameters

• sx_install_setools : Whether to install additional selinux tools, i.e. for troubleshooting.

• sx_selinux_status : Which selinux status should be configured, sets both the status in the configuration file and on commanbd line. Valid options are enforcing and permissive. Defaults to enforcing.

SELINUX

All files and directories are configured with correct selinux context. If selinux is disabled, these contexts are ignored.

Known Problems

• Systems configured with selinux disabled require a reboot for selinux to be enabled. This module will not do the reboot for you to avoid unexpected outages.

Support

• OS: CentOS 7

• Puppet 5.x

Tests

• Puppet Lint

• excluded tests:

  • --no-class_inherits_from_params_class-check:relavant only to non-supported outdated puppet versions

  • --no-variable_scope-check: not applicable as we are inheriting parameters from params class. the lint check does not distinguish between facts and inherited parameters.

  • --no-80chars-check: it is not always possible to stay within 80 characters, although typically only occurring on the parameter vault params.pp.

  • --no-arrow_alignment-check: this check leads to actually not having am easily readable arrow alignment, as this checks per block, not per class.

• Puppet Parser

• ERB Template Parser

• Test for unwanted UTF8 files in the Puppet code as this causes problems with PuppetDB (see tests/UTF_Files)

  Contact Us

  contact Us

Disclaimer

ConfDroid as entity is entirely independent from Puppet. We provide custom configuration modules, written for specific purposes and specific environments. The modules are tested and supported only as documented, and require testing in designated environments (i.e. lab or development environments) for parameter tuning etc. before deploying into production environments.