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simpkv

SIMPkv providers
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Version information

  • 0.13.0 (latest)
  • 0.12.0
  • 0.11.0
  • 0.9.0
  • 0.8.0
  • 0.7.2
  • 0.7.1
  • 0.7.0
released May 20th 2024
This version is compatible with:
  • Puppet Enterprise 2023.8.x, 2023.7.x, 2023.6.x, 2023.5.x, 2023.4.x, 2023.3.x, 2023.2.x, 2023.1.x, 2023.0.x, 2021.7.x, 2021.6.x, 2021.5.x, 2021.4.x, 2021.3.x, 2021.2.x, 2021.1.x, 2021.0.x
  • Puppet >= 7.0.0 < 9.0.0
  • , , , ,

Start using this module

  • r10k or Code Manager
  • Bolt
  • Manual installation
  • Direct download

Add this module to your Puppetfile:

mod 'simp-simpkv', '0.13.0'
Learn more about managing modules with a Puppetfile

Add this module to your Bolt project:

bolt module add simp-simpkv
Learn more about using this module with an existing project

Manually install this module globally with Puppet module tool:

puppet module install simp-simpkv --version 0.13.0

Direct download is not typically how you would use a Puppet module to manage your infrastructure, but you may want to download the module in order to inspect the code.

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Tags: simp, simpkv

Documentation

simp/simpkv — version 0.13.0 May 20th 2024

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Table of Contents

Overview

This is a SIMP module

This module is a component of the System Integrity Management Platform, a compliance-management framework built on Puppet.

If you find any issues, please submit them via JIRA.

Module Description

Provides an abstract library that allows Puppet to access one or more key/value stores.

This module provides

  • a standard Puppet language API (functions) for using key/value stores

  • a configuration scheme that allows users to specify per-application use of different key/value store instances

  • adapter software that loads and uses store-specific interface software provided by the simpkv module itself and other modules

  • interfaces for 2 types of stores

    • local filesystem store: Useful for module acceptance tests or small sites that are not subject to high-performance and/or high-availability requirements.
    • LDAP store: Useful for large sites that are subject to high-performance and/or high-availability requirements.

  • support for creating custom store interfaces

    • a Ruby API for the store interface software that developers can implement to provide their own store interface
    • a standard acceptance testing framework developers can use to verify their store interfaces work as expected
    • a developers guide.

Setup

What simpkv Affects

simpkv manages the contents of one or more key/value stores via Puppet functions which affect store, retrieve, and modify operations.

Setup Requirements

simpkv has 3 main setup requirements:

  1. simpkv requires hieradata configuration (a simpkv::options Hash), when it is used to manage the contents of key/value stores.

    • simpkv will operate without any configuration by internally configuring itself to use the auto-default local filesystem store, however, this key/value store is really only useful in Puppet module tests.

  2. simpkv expects each configured key/value store to be managed elsewhere.

    • You can manage LDAP servers with the simp/ds389 module.

  3. simpkv expects any store-specific interface requirements to be addressed elsewhere.

    • Some stores may impose other store-specific requirements in order for their simpkv interface software to operate. For example, a store may require packages to be installed on a server compiling the Puppet manifests.
    • Any store-specific requirements will be listed in that store's interface documentation.

Terminology

The following terminology will be used throughout the remainder of this document:

  • backend- A specific key/value store that has unique configuration, (e.g., directory of files on a local filesystem, LDAP server, Consul server, Etcd server, Zookeeper server).

  • plugin - Ruby software that interfaces with a type of backend to affect the operations requested in simpkv Puppet functions. For example, the 'ldap' plugin manages simpkv data stored in an external LDAP server.

Usage

Using simpkv is simple:

  • Use simpkv functions to store or retrieve key/value pairs in your Puppet code.

  • Configure the backend(s) to use in hieradata.

  • Reconfigure the backend(s) in hieradata, as your needs change.

    • No changes to your Puppet code will be required.
    • Just transfer your data from the old key/value store to the new one.

The backend configuration of simpkv can be as simple as you want (one backend) or complex (multiple backends of different types servicing different applications). Examples of both scenarios will be shown in this section.

Single Backend Example

This example will store and retrieve host information using

  • simpkv function signatures that assume the default backend
  • hieradata that only configures the default backend.

To store a node's hostname and IP address:

simpkv::put("hosts/${facts['clientcert']}", $facts['ipaddress'])

To create a hosts file using the list of stored host information:

$result = simpkv::list('hosts')
$result['keys'].each |$host, $info | {
  host { $host:
    ip => $info['value'],
  }
}

In hieradata, configure the default backend in the simpkv::options Hash. This example, will configure simpkv's file backend.

simpkv::options:

  # Hash of backend configurations.
  # - We have only the required 'default' entry which will apply to
  #   all simpkv calls.
  backends:
    default:
      # The plugin type and id must be specified.
      type: file
      id: file

      # plugin-specific configuration
      root_path: "/var/simp/simpkv/file"
      lock_timeout_seconds: 30

Multiple Backends Example

This example will store and retrieve host information using

  • simpkv function signatures that request a backend based on an application identifier
  • multi-backend hieradata that supports the request.

The function signatures and hieradata are a little more complicated, but still relatively straightforward to understand.

To store a node's hostname and IP address using the backend servicing myapp1:

$simpkv_options = { 'app_id' => 'myapp1' }
$empty_metadata = {}
simpkv::put("hosts/${facts['clientcert']}", $facts['ipaddress'], $empty_metadata, $simpkv_options)

To create a hosts file using the list of stored host information using the backend servicing myapp1:

$simpkv_options = { 'app_id' => 'myapp1' }
$result = simpkv::list('hosts', $simpkv_options)
$result['keys'].each |$host, $info | {
  host { $host:
    ip => $info['value'],
  }
}

In hieradata, configure multiple backends in the simpkv::options Hash. This example will configure a single instance of a LDAP backend and two instances of file backend, assuming we are using simpkv's LDAP and file plugins, respectively. It is artificially complex, but illustrates the flexibility you have when configuring backends:

  • You can use any mix of backend types.

  • You can use multiple instances of a backend type.

    • Each 'type' and 'id' specifies a unique configuration.

  • You can map different applications to the same backend.

# The backend configurations here will be inserted into simpkv::options
# below via the alias function.

simpkv::backend::ldap_default:
  type: ldap
  id: default
  ldap_uri: ldapi://%2fvar%2frun%2fslapd-simp_data.socket

simpkv::backend::file_myapp:
  type: file
  id: myapp

simpkv::backend::file_yourapp:
  type: file
  id: yourapp


simpkv::options:
  # Hash of backend configurations.
  # * Includes application-specific backends and the required default backend.
  # * simpkv will use the appropriate backend for each simpkv function call.
  backends:
    # Backend for specific myapp_special_snowflake* applications
    "myapp_special_snowflake": "%{alias('simpkv::backend::file_myapp')}"

    # Backend for remaining myapp* applications, including myapp1
    "myapp":                   "%{alias('simpkv::backend::ldap_default')}"

    # Backend for all yourapp* applications
    "yourapp":                 "%{alias('simpkv::backend::file_yourapp')}"

    # Required default backend for everything else, including simpkv
    # function calls with no application identifier
    "default":                 "%{alias('simpkv::backend::ldap_default')}"

In this example, we are setting the application identifier to myapp1 in our simpkv function calls. simpkv will select myapp as the backend to use for myapp1, based on the simple matching algorithm described in Backend Selection.

Binary Value Example

simpkv is able to store and retrieve binary values, provided the Puppet code uses the appropriate configuration and functions/types for binary data.

Below is an example of using simpkv for a binary value.

To store the content of a generated keytab file:

# Load in the binary content from a file. Returns a Binary Puppet type.
$original_binary_content = binary_file('/path/to/keytabs/app.keytab')

# Set a key/value pair with the binary content
simpkv::put('app/keytab', $original_binary_content)

To retrieve the keytab binary content and use it in a file resource:

# Retrieve a binary value from a key/value store and set a Binary variable
$retrieved_result = simpkv::get('app/keytab')
$retrieved_binary_content = Binary.new($retrieved_result['value'], '%r')

# Persist binary data to another file
file { '/different/path/to/keytabs/app.keytab':
  content => $retrieved_binary_content
}

Global Key Example

By default, the key/folder path referenced in a simpkv function is tied to the Puppet environment of the node whose manifest is being compiled. This ensures the data stored for one Puppet environment (e.g., 'dev') does not corrupt the data for another Puppet environment (e.g., 'production'). Nevertheless, there are times in which you may want to store data that is applicable to all Puppet environments, instead. simpkv supports global data through an option in each simpkv function call.

Below is an example of using simpkv to store a node's hostname and IP address as global data:

$simpkv_options = { 'global' => true }
$empty_metadata = {}
simpkv::put("hosts/${facts['clientcert']}", $facts['ipaddress'], $empty_metadata, $simpkv_options)

To create a hosts file using the list of stored, global host information:

$simpkv_options = { 'global' => true }
$result = simpkv::list('hosts', $simpkv_options)
$result['keys'].each |$host, $info | {
  host { $host:
    ip => $info['value'],
  }
}

Auto-Default Backend

simpkv is intended to be configured via simpkv::options and any application-specific configuration passed to the simpkv Puppet functions. However, to facilitate Puppet manifest testing and the rollout of simpkv capabilities (specifically, the use of simpkv internally in simplib::passgen), when simpkv::options is not set in hieradata, simpkv will automatically use the 'file' plugin to store key/value data on the local filesystem. This is equivalent to the following simpkv::options hieradata:

simpkv::options:
  environment: "%{server_facts.environment}"
  softfail: false
  backend: default
  backends:
    default:
      type: file
      id: auto_default

The 'file' plugin id described here.

Reference

simpkv Function Reference

See REFERENCE.md for the module's function reference.

simpkv Configuration Reference

The simpkv configuration used for each simpkv function call is comprised of a merge of

  • function-provided options Hash
  • hieradata configuration specified by the simpkv::options Hash
  • global configuration defaults.

The merge is executed in a fashion to ensure the function-provided options take precedence over the simpkv::options hieradata values and global defaults.

The merged simpkv configuration contains global and backend-specific configurations, along with an optional, function-provided application identifier. The primary keys in this Hash are as follows:

  • app_id: Optional String from simpkv function calls, only. Specifies an application name that can be used to identify which backend configuration to use via fuzzy name matching, in the absence of the backend option.

    • More flexible option than backend.
    • Useful for grouping together simpkv function calls found in different catalog resources.
    • See Backend Selection.

  • backend: Optional String. Specifies a definitive backend configuration to use.

    • Takes precedence over app_id.

    • When present, must match a key in backends and will be used unequivocally.

      • If that backend does not exist in backends, the simpkv function will fail.

    • When absent, the backend configuration will be selected from the set of entries in backends, using the app_id option if specified.

    • See Backend Selection.

  • backends: Required Hash. Specifies backend configurations. Each key is the name of a backend configuration and its value contains the corresponding configuration Hash.

    • Each key is a String.
    • Must include a 'default' key.
    • More than one key can use the same backend configuration.
    • See Backend Configuration Entries for more details about a backend configuration Hash.

  • global: Optional Boolean. Set to true when the key being accessed is global. Otherwise, the key will be tied to the Puppet environment of the node whose manifest is being compiled.

    • Defaults to false.

  • softfail: Optional Boolean. Whether to ignore simpkv operation failures.

    • When true, each simpkv function will return a result object even when the operation failed at the backend.
    • When false, each simpkv function will fail when the backend operation failed.
    • Defaults to false when absent.

Backend Configuration Entries

Each backend configuration entry in backends is a Hash. The Hash must contain type and id keys, where the (type,id) pair defines a unique configuration (i.e., unique plugin instance).

  • type is the type of plugin, e.g., 'ldap'.

    • 'file' and 'ldap' are provided by the simpkv module.
    • Other modules may provide their own plugins.

  • id is the instance identifier for a type.

  • Other keys for configuration specific to the backend may also be present.

Backend Selection

The backend to use for a simpkv Puppet function call will be determined from the merged simpkv options Hash as follows:

  • If a specific backend is requested via the backend key in the merged simpkv options Hash, that backend will be selected.

    • If that backend does not exist in backends, the simpkv function will fail.

  • Otherwise, if an app_id option is specified in the merged simpkv options Hash and it matches a key in the backends Hash, exactly, that backend will be selected.

  • Otherwise, if an app_id option is specified in the merged simpkv options Hash and it starts with the key in the backends Hash, that backend will be selected.

    • When multiple backends satisfy the 'start with' match, the backend with the most matching characters is selected.

  • Otherwise, if the app_id option does not match any key in in the backends Hash or is not present, the default backend will be selected.

To clarify this backend selection algorithm, consider a site in which simpkv is configured for multiple backends in the following simpkv::options Hash.

simpkv::options:
  # Hash of backend configurations.
  # * Includes application-specific backends and the required default backend.
  # * simpkv will use the appropriate backend for each simpkv function call.
  backends:
    # Backend for specific myapp_special_snowflake* applications
    "myapp_special_snowflake":
      type: file
      id: myapp_special_snowflake

    # Backend for remaining myapp* applications
    "myapp":
      type: file
      id: myapp

    # Backend for all yourapp* applications
    "yourapp":
      type: file
      id: yourapp

    # required default backend for everything else, including simpkv
    # function calls with no application identifier
    "default":
      type: file
      id: default

The following table shows the backend that simpkv will select make given the options specified by the simpkv function call.

simpkv Function Call Backend Selected Comments
simpkv::get('key') default No special handling requested
simpkv::get('key', {'backend' => 'yourapp'}) yourapp Specific backend requested
simpkv::get('key', {'backend' => 'oops'}) N/A Function will fail since 'oops' backend does not exist
simpkv::get('key', {'app_id' => 'myapp'}) myapp Exact match
simpkv::get('key', {'app_id' => 'myapp1'}) myapp Starts with match
simpkv::get('key', {'app_id' => 'myapp_special'}) myapp Starts with match
simpkv::get('key', {'app_id' => 'myapp_special_snowflake_for_bob'}) myapp_special_snowflake Starts with match
simpkv::get('key', {'app_id' => 'otherapp'}) default No match so fallback to default

Backend Basics

This section describes details about the folder layout and format of data stored by simpkv that you may find useful when you are inspecting data in a backend.

Backend Folder Layout

The storage in a simpkv backend can be notionally represented as a folder tree with key files at terminal nodes. simpkv automatically sets up the folder layout at the top level and the user specifies key files below that. Specifically,

  • simpkv stores global keys in a globals sub-folder of the root folder.

    • Global keys are not tied to any specific Puppet environment.
    • You must specify 'global' => true in the options passed to simpkv functions in order to access global keys.

  • simpkv stores all other keys in sub-folders named for the Puppet environment in which each key was created.

    • The parent directory for all environment folders is <root folder>/environments.

  • Further sub-folder trees are allowed for global or environment-specific keys.

    • A relative paths in a key name indicates a sub-folder tree (e.g. 'app1/keya').

For example,

simpkv Key/Value Tree

The actual representation of the root folder and 'key file' is backend specific.

Backend Data Format

Internally, simpkv automatically serializes each key's value and optional metadata into a string for backend storage, and then deserializes it upon retrieval. The string is a JSON representation of a Hash with at least 2 attributes:

  • value: Always present. Key's value

  • metadata: Always present. Key's metadata

  • encoding and original_encoding: Only present when the key's value is a Puppet Binary type. Indicates simpkv's internal encoding of the binary data into a representation suitable for JSON.

    • simpkv uses strict Base64 encoding.

This serialization simplifies plugin development, but does limit the types of data that can be stored in the value and metadata. simpkv works with the following types:

  • Simple type: String, boolean, or numeric values
  • Standard complex type: Hash, Array, or nested Hash/Array structure whose terminal nodes are simple types
  • Binary type: Puppet Binary type when it is the key's value, only; not in any complex values or metadata

The table below shows a few examples of the serialization for clarification.

Value Type Serialized String
Simple without metadata {"value":10,"metadata":{}}
Simple with metadata {"value":true,"metadata":{"verified":true,"user":"vsmith"}}
Array with metadata {"value":[1,2,3],"metadata":{"originator":"njones","location":{"room":"29B","rack":10}}}
Hash without metadata {"value":{"attr1":"hello","attr2":{"part1":9.898,"part2":[1,2,3]}},"metadata":{}
Binary transformed by simpkv without metadata {"value":"<Base64 (strict) encoded string>","encoding":"base64","original_encoding":"ASCII-8BIT","metadata":{}"}

File Plugin

simpkv provides a plugin that maintains a file-based key/value store on the local filesystem on the server on which the Puppet manifests are being compiled. It effectively uses system commands to affect local filesystems changes.

  • This plugin is appropriate for Puppet module tests.
  • This plugin can be used for small-sites in which there is only a single server compiling Puppet manifests.

File Plugin Requirements

  • The file plugin must be configured for a local filesystem on the server compiling the Puppet manifests.

    • The file locking mechanism the plugin uses to ensure the integrity of the key files is only guaranteed to work on a local filesystem, and is not suitable for shared filesystems such as NFS.

  • The file plugin must have write privileges for the configured root_path for the user compiling the manifests.

  • The file plugin must not be used for sites using distributed Puppet servers.

    • The file plugin has no mechanisms to distribute the key/store to other compile servers.

File Plugin Configuration

The plugin has a backend type file, and supports the following plugin-specific configuration parameters.

  • root_path: Optional. Root directory path for the key files

    • Defaults to /var/simp/simpkv/file/<id> when that directory can be created or <Puppet[:vardir]>/simp/simpkv/<name> otherwise.

  • lock_timeout_seconds: Optional. Maximum number of seconds to wait for an exclusive file lock on a file modifying operation before failing the operation.

    • Defaults to 5 seconds.

Here is an example configuration for the file plugin:

simpkv::options:
  backends:
    default:
      type: file
      id:   default

LDAP Plugin

simpkv provides a plugin to interface with a LDAP key/value store configured with a simpkv LDAP schema. If your site is large and requires a high-availability, distributed key/value store, LDAP is the appropriate backend to use! The benefits of using LDAP are as follows:

  • LDAP supports the storage of any data, not just accounts data.
  • LDAP is well defined protocol implemented by a wide variety of client and server implementations.
  • LDAP is secure.
  • LDAP server implementations are highly performant.
  • LDAP server implementations support replication.

LDAP Plugin Requirements

The LDAP plugin has 4 main requirements:

  1. The package providing ldapadd, ldapdelete, ldapmodify and ldapsearch (i.e. openldap-clients) must be installed on the system on which the Puppet manifests will be compiled.

  2. The LDAP server must be loaded with the simpkv LDAP schema.

  3. The root Directory Name (DN) for the simpkv tree in LDAP must already exist.

    • This corresponds to the LDAP plugin's base_dn configuration parameter.

  4. The supplied LDAP configuration must permit the user compiling the Puppet manifests to modify the LDAP tree below that 'simpkv' root DN.

In addition, if LDAPI is not the protocol being being used to communicate with the LDAP server, the configured password file used for simple authentication with the LDAP server MUST already exist before the catalog is compiled.

  • Catalog compilation will fail if you attempt to create the file using a file Puppet resource in the same catalog as simpkv function calls. This is because the simpkv functions will be evaluated before the file resource in the compilation.

LDAP Plugin Configuration

The simpkv LDAP plugin is of type ldap and supports the following plugin-specific configuration parameters.

  • ldap_uri: Required. The LDAP server URI.

    • This can be a LDAPI socket path or an ldap/ldaps URI specifying host and, optionally, port.
    • When using an 'ldap://' URI with StartTLS, enable_tls must be true and tls_cert, tls_key, and tls_cacert must be configured.
    • When using an 'ldaps://' URI, tls_cert, tls_key, and tls_cacert must be configured.

  • base_dn: Optional. The root DN for the 'simpkv' tree in LDAP.

    • Defaults to 'ou=simpkv,o=puppet,dc=simp'
    • Must already exist

  • admin_dn: Optional. The bind DN for simpkv administration.

    • Defaults to 'cn=Directory_Manager'
    • This identity must have permission to modify the LDAP tree below base_dn.

  • admin_pw_file: Required for all but LDAPI. A file containing the simpkv adminstration password.

    • Will be used for authentication when set, even with LDAPI.
    • When unset for LDAPI, the admin_dn is assumed to be properly configured for external EXTERNAL SASL authentication for the user compiling the manifest (e.g., 'puppet' for 'puppet agent', 'root' for 'puppet apply' and the Bolt user for Bolt plans).

  • enable_tls: Optional. Whether to enable TLS.

    • Defaults to true when ldap_uri is an 'ldaps://' URI, otherwise defaults to false.
    • Must be set to true to enable StartTLS when using an 'ldap://' URI.
    • When true tls_cert, tls_key and tls_cacert must be set.

  • tls_cert: Required for StartTLS or TLS. The certificate file.

  • tls_key: Required for StartTLS or TLS. The key file.

  • tls_cacert: Required for StartTLS or TLS. The cacert file.

  • retries: Optional. Number of times to retry an LDAP operation if the server reports it is busy.

    • Defaults to 1.

Here are some example configurations:

  • To use LDAPI (best option if the Puppet manifest compilation is being done on the LDAP server), configure the LDAP plugin as follows:
  simpkv::options:
    backends:
      default:
        type: ldap
        id:   default

        # Set this to your LDAP server's LDAPI URI
        ldap_uri: ldapi://%2fvar%2frun%2fslapd-simp_data.socket
  • To use LDAPS, configure the LDAP plugin as follows:
  simpkv::options:
    backends:
      default:
        type: ldap
        id:   default

        # Set this to your LDAP server's LDAPS URI
        ldap_uri: ldaps://ldap.example.com

        # Set this to the location of your administration DN password file
        admin_pw_file: /etc/simp/simpkv_pw.txt

        # Set these to the appropriate certs for your server
        tls_cert:     /etc/pki/simp_apps/openldap/public/puppetserver.example.com.pub
        tls_key:      /etc/pki/simp_apps/openldap/private/puppetserver.example.com.pem
        tls_cacert:   /etc/pki/simp_apps/openldap/cacerts/cacerts.pem
  • To use LDAP with StartTLS, configure the LDAP plugin as follows:
  simpkv::options:
    backends:
      default:
        type: ldap
        id:   default

        # Set this to your LDAP server's LDAP URI
        ldap_uri: ldap://ldap.example.com

        # Set this to the location of your administration DN password file
        admin_pw_file: /etc/simp/simpkv_pw.txt

        # Use StartTLS with the LDAP URI
        enable_tls: true

        # Set these to the appropriate certs for your server
        tls_cert:     /etc/pki/simp_apps/openldap/public/puppetserver.example.com.pub
        tls_key:      /etc/pki/simp_apps/openldap/private/puppetserver.example.com.pem
        tls_cacert:   /etc/pki/simp_apps/openldap/cacerts/cacerts.pem

The LDAP plugin creates the key/value store for each instance under its own tree on the LDAP server. The tree's DN is ou=,ou=instances,<base_dn>, where the instance id is the 'ldap' plugin's id configuration parameter. So, you can actually use the same LDAP server for different plugin instances.

Here is an example configuration of multiple instances with the same LDAPI configuration:

  simpkv::options:
    backends:
      # stored under the 'myapp' instance tree of the simp_data LDAP server
      myapp:
        type: ldap
        id:   myapp
        ldap_uri: ldapi://%2fvar%2frun%2fslapd-simp_data.socket

      # stored under the 'default' instance tree of the simp_data LDAP server
      default:
        type: ldap
        id:   default
        ldap_uri: ldapi://%2fvar%2frun%2fslapd-simp_data.socket

Debugging LDAP Integration Issues

When you are trying to debug LDAP integration issues, use the --debug option during manifest compilation to see more details about what the LDAP plugin is doing. For example,

puppet apply -t --debug my_manifests.pp

Using this option will log the exact LDAP commands used during simpkv function calls.

Other Resources

The ldap_plugin acceptance test suite is complete example on how to use the LDAP plugin. It demonstrates the following:

  • How to configure simpkv to use the LDAP plugin for LDAPI unencrypted LDAP, LDAP + StartTLS, and LDAPS protocols.

  • How to stand up simple 389-DS LDAP instances for those protocol options.

    Each 389-DS instance is

    • Created by the simp/ds389 module.

    • Bootstrapped with a LDIF that corresponds to the simpkv leg of the SIMP Data Root Directory Information Tree (DIT) shown below. SIMP Data Root DIT

    • Explicitly configured with non-standard ports, so as to not be confused with LDAP servers used for accounts management.

    • Loaded with the simpkv LDAP schema.

Limitations

  • SIMP Puppet modules are generally intended to be used on a Red Hat Enterprise Linux-compatible distribution such as EL7 and EL8.

  • simpkv only supports the use of binary data for the value when that data is a Puppet Binary. It does not support binary data which is a sub-element of a more complex value type (e.g. Array[Binary] or Hash that has a key or value that is a Binary).

  • simpkv does not support custom data types that cannot be serialized to JSON by the Ruby libraries provided by Puppet.

  • simpkv's file plugin is only guaranteed to work on local filesystems. It may not work on shared filesystems, such as NFS.

  • SIMP does not yet manage the LDAP server configured for simpkv data.

    • See the ldap_plugin acceptance test suite for an example of how to set up a simple 389-DS LDAP instance for simpkv data.

Plugin Development

Please see simpkv Plugin Development Guide for details on how to write your own custom plugin.

simpkv Development

Please read our [Contribution Guide] (https://simp.readthedocs.io/en/stable/contributors_guide/index.html).

Unit tests

Unit tests, written in rspec-puppet can be run by calling:

bundle install
bundle exec rake spec

Acceptance tests

This module includes Beaker acceptance tests using the SIMP Beaker Helpers. By default the tests use Vagrant with VirtualBox as a back-end; Vagrant and VirtualBox must both be installed to run these tests without modification.

To execute all of the tests run the following:

bundle install
bundle exec rake beaker:suites

To execute an individual suite for a specific nodeset, add the suite and the nodeset to the beaker:suites task. For example,

bundle exec rake beaker:suites[ldap_plugin,default]

Some environment variables that may be useful:

BEAKER_debug=true
BEAKER_destroy=no
BEAKER_fips=yes
BEAKER_provision=no

  • BEAKER_debug: Show the commands being run on the virtual machines and their output.

  • BEAKER_destroy=no: Prevent the virtual machine destruction after the tests finish so you can inspect the state.

  • BEAKER_fips=yes: Enable FIPS-mode on the virtual machines.

    • This can take a long time, because it must enable FIPS in the kernel command-line, rebuild the initramfs, then reboot.

  • BEAKER_provision=no: Prevent the virtual machine from being recreated.

    • This can save a lot of time while you're writing the tests.

Please refer to the SIMP Beaker Helpers documentation for more information.