krb5

Puppet management of the MIT kerberos stack

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Version information

released Sep 16th 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
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Start using this module

Installation method

Add this module to your Puppetfile:

mod 'simp-krb5', '7.8.0'

Learn more about managing modules with a Puppetfile

Add this module to your Bolt project:

bolt module add simp-krb5

Learn more about using this module with an existing project

Manually install this module globally with Puppet module tool:

puppet module install simp-krb5 --version 7.8.0

Tags: simp

Documentation

simp/krb5 — version 7.8.0 Sep 16th 2024

Krb5

Krb5
```
- [Table of Contents](#table-of-contents)
```

Module Description

Management of the MIT Kerberos Stack

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

This module is designed for use within a larger SIMP ecosystem, but many of its functions can be used independently.

See REFERENCE.md for full API details.

Setup

What krb5 affects

The module, by default, sets up a fully functional KDC in your environment and generates keytabs for one admin user, and all of your hosts that it can discover via the SIMP keydist directory.

keydist discovery only works if the KDC is on the same system as your Puppet Server!

Setup Requirements

To use this module, simply install it into your environment's modulepath.

If you wish to have your keytabs available for automatic distribution via puppet, you will need to create a krb5_files module that the puppet user can write to.

It is recommended that you make this a location that is separated from your regular modules so that your code synchronization engine does not remove the files and so that this sensitive information is not placed into revision control.

The simplest method for doing this is to create an environment.conf file in your environment that has something like the following:

The simp directory in the example below should be used unless you explicitly set krb5::kdc::auto_keytabs::output_dir.

modulepath = modules:/var/simp/environments/<my_environment>/site_files:$basemodulepath

You will then need to create the target keytabs directory in that space so that the puppet type knows that it should write the keytabs.

To create the default required directories, run the following on the puppet master:

   mkdir -p /var/simp/environments/<my_environment>/site_files/krb5_files/files/keytabs
   chgrp -R puppet /var/simp
   chmod -R g+rX /var/simp
   chmod g+w /var/simp/environments/<my_environment>/site_files/krb5_files/files/keytabs

If you have SELinux enabled, don't forget to set your contexts appropriately!

   chcon -R -t puppet_var_lib_t /var/simp

Beginning with krb5

The following sections give a brief guide on how to get started, for more information, please see the official Red Hat Documentation.

NOTE

You can skip this section if you're using the default settings. These will complete the following for you with randomly generated passwords for all keytabs and the master password.

Usage

Automatically manage the KDC and keytabs on clients

The examples in this section provides the hiera configuration needed to automatically set up the KDC along with automated keytab distribution.

Set the following to be applied to all nodes that require Kerberos connectivity

   classes:
     - 'krb5::keytab'

   krb5: true

On your puppet server, set the following

   classes:
     - 'krb5::kdc'

Keytab Propagation

When puppet runs on the server, it will generate a set of keytabs, one per known host. By default, the keytabs will be placed in /var/kerberos/krb5kdc/generated_keytabs/. If the setup instructions were followed for the puppet server, then the keytabs will be placed in the created directory.

During subsequent client execution, each puppet client will have all generated keytabs copied to their system in /etc/krb5_keytabs. The default keytab, krb5.keytab, will be copied to /etc/krb5.keytab and act as the system default.

While it is unlikely that you will have more than one keytab, the facility has been created to support that structure should you require it in the future for different applications.

NOTE

Should you opt out of combining your puppet server and KDC, you will need to copy the generated keytabs from your KDC to the puppet server and into a keytabs distribution space as specified in Setup Requirements. Be sure to properly set your permissions after copy!

Manual Configuration and Expansion

If you opt out of the automated process above, you can use the following to generate keytabs for your principals and distribute them in a manner of your choice.

Creating Admin Principals

ACL Configuration

The following Puppet code snippet will create an ACL for your admin user that is probably appropriate for your organization.


   krb5_acl{ "${facts['networking']['domain']}_admin":
     principal       => "*/admin@${facts['networking']['domain']}",
     operation_mask  => '*'
   }

Create Your Admin Principal

Your first principal will be an admin principal and will be allowed to manage the environment since it is in the admin group. This must be created on the KDC system.

Run the following command, as root, to create your principal:

   /usr/sbin/kadmin.local -r YOUR.DOMAIN -q "addprinc <username>/admin"

You can now do everything remotely using this principal. Load it using

   $ /usr/bin/kinit <username>/admin

Creating Host Principals

Before you can really do anything with your hosts, you need to ensure that the host itself has a keytab.

It is highly recommended that you use the instructions in Setup Requirements to provide a protected space for your keytabs to be distributed.

On the KDC, generate a principal for each host in your environment using the following:

   /usr/sbin/kadmin.local -r YOUR.DOMAIN -q 'addprinc -randkey host/<fqdn>'

Create Your Keytabs

Then, create a separate keytab file for each of your created hosts using the following command:

   /usr/sbin/kadmin.local -r YOUR.DOMAIN -q 'ktadd -k <fqdn>.keytab host/<fqdn>'

Once this is complete, the keys will be propagated across your environment per Keytab Propagation.

Integration with SIMP NFS Module

Please see our NFS module documentation or our online documentation for information on how to integrate KRB5 with NFS.

Limitations

SIMP Puppet modules are generally intended to be used on a Red Hat Enterprise Linux-compatible distribution.

Development

Please read our Contribution Guide.

If you find any issues, they can be submitted to our JIRA.

Acceptance tests

To run the system tests, you need Vagrant installed.

You can then run the following to execute the acceptance tests:

   bundle exec rake beaker:suites

Some environment variables may be useful:

   BEAKER_debug=true
   BEAKER_provision=no
   BEAKER_destroy=no
   BEAKER_use_fixtures_dir_for_modules=yes

BEAKER_debug: show the commands being run on the STU and their output.
BEAKER_destroy=no: prevent the machine destruction after the tests finish so you can inspect the state.
BEAKER_provision=no: prevent the machine from being recreated. This can save a lot of time while you're writing the tests.
BEAKER_use_fixtures_dir_for_modules=yes: cause all module dependencies to be loaded from the spec/fixtures/modules directory, based on the contents of .fixtures.yml. The contents of this directory are usually populated by bundle exec rake spec_prep. This can be used to run acceptance tests to run on isolated networks.

Reference

Classes

krb5: Kerberos 5 management and manipulation
krb5::client: A client class that will connect with the given KDC
krb5::config: NOTE: THIS IS A PRIVATE CLASS Basic configuration of the MIT Kerberos
krb5::config::default_settings: Default System Settings
krb5::install: Install the MIT Kerberos client
krb5::kdc: The necessary structure to manage the Kerberos 5 KDC on a given system.
krb5::kdc::auto_keytabs: Provides a mechanism for auto-generating keytabs on the KDC as well as provisioning those keytabs for distribution via Puppet if possible.
krb5::kdc::config: Provides the necessary structure to manage the Kerberos 5 KDC on a given system.
krb5::kdc::firewall: Set up the firewall for the KDC
krb5::kdc::install: Install the krb5kdc packages
krb5::kdc::selinux_hotfix: This class provides a hotfix for a broken SELinux policy in EL7
krb5::kdc::service: Manage the KRB5 services
krb5::keytab: Distribute Kerberos keytabs in a sane manner

Defined types

krb5::kdc::realm: Allows you to add a realm to the [realms] section of /var/kerberos/krb5kdc/kdc.conf.
krb5::setting: Allows you to set individual configuration elements in /etc/krb5.conf.
krb5::setting::domain_realm: Allows you to configure individual domain => realm mappings.
krb5::setting::realm: Allows you to add a realm to the [realms] section of /etc/krb5.conf.

Resource types

krb5_acl: Manages krb5 kadmind ACL entries per kadmind(8). When removing an entry, you can specify a regex for the operation_target and all associated
krb5kdc_auto_keytabs: Auto-generates principals and keytabs on a functional KDC and outputs the keytabs to a directory of the user's choosing. Can optionally take

Functions

krb5::munge_conf_filename: Returns a string that is safe to use as a filename for including in krb5 configuration files.
krb5::validate_time_duration: Validates that the passed string is a valid krb5 time duration per http://web.mit.edu/kerberos/krb5-1.13/doc/basic/date_format.html#duration.

Classes

`krb5`

This base class installs everything necessary for basic KRB client use

We modify the default /etc/krb5.conf to use an include structure under /etc/krb5.conf.simp.d. Each [subsection] is broken out into a separate directory and all files in that directory are included.

Parameters

The following parameters are available in the krb5 class:

ldap
firewall
haveged
enctypes

`ldap`

Data type: Boolean

Configure the system to incorporate LDAP components

This presently does not set up the LDAP back-end for KRB5

Default value: simplib::lookup('simp_options::ldap', { 'default_value' => false })

`firewall`

Data type: Boolean

Use the SIMP iptables module

Default value: simplib::lookup('simp_options::firewall', { 'default_value' => false })

`haveged`

Data type: Boolean

Use the SIMP haveged module

Default value: simplib::lookup('simp_options::haveged', { 'default_value' => true })

`enctypes`

Data type: Array[String]

An Array of default permitted encryption types

Default value: [ 'aes256-cts-hmac-sha1-96', 'aes128-cts-hmac-sha1-96' ]

`krb5::client`

By default, this is set up to connect with the KDC that would be configured if you use the default options.

Parameters

The following parameters are available in the krb5::client class:

realms

`realms`

Data type:

Hash[
    String,
    Struct[{
      admin_server  => Simplib::Host,
      Optional[kdc] => Simplib::Host
    }]
  ]

A Hash of Kerberos Realms that provide a Realm paired with an Admin Server and a KDC

If you specify nothing here, then the system will try to set up a client with the Puppet server as the KDC. This will fail if no server is specified.

Default value: {}

`krb5::config`

NOTE: THIS IS A PRIVATE CLASS

Basic configuration of the MIT Kerberos client

Parameters

The following parameters are available in the krb5::config class:

config_dir
default_realm
realm_domains
dns_lookup_realm
dns_lookup_kdc
renew_lifetime
forwardable
clockskew
permitted_tgs_enctypes
permitted_tkt_enctypes
permitted_enctypes
puppet_exclusive_managed

`config_dir`

Data type: Stdlib::Absolutepath

The path to the Puppet managed config files.

Default value: '/etc/krb5.conf.simp.d'

`default_realm`

Data type: String

Default realm to which to bind.

Default value: inline_template('<%= @domain.upcase %>')

`realm_domains`

Data type: Array[String]

Array of domains bound to the default realm set in $default_realm.

Default value: [ ".${facts['networking']['domain']}", $facts['networking']['domain'] ]

`dns_lookup_realm`

Data type: Boolean

Use DNS TXT records to lookup the realm.

Default value: false

`dns_lookup_kdc`

Data type: Boolean

Use DNS SRV records to lookup the KDC.

Default value: true

`renew_lifetime`

Data type: String

The default renewable lifetime for initial tickets. Should be a valid krb5 Time Duration string. @see http://web.mit.edu/kerberos/krb5-1.13/doc/basic/date_format.html#duration

Default value: '7d'

`forwardable`

Data type: Boolean

Whether or not to make initial tickets forwardable by default. This is needed for SSH GSSAPI.

Default value: true

`clockskew`

Data type: Integer[0]

Max allowable amount of seconds of clockskew allowed before assuming that a message is invalid.

Default value: 500

`permitted_tgs_enctypes`

Data type: Array[String]

Supported encryption types reported by the KDC.

Default value: $krb5::enctypes

`permitted_tkt_enctypes`

Data type: Array[String]

Permitted client encryption types.

Default value: $krb5::enctypes

`permitted_enctypes`

Data type: Array[String]

Permitted session key encryption types.

Default value: $krb5::enctypes

`puppet_exclusive_managed`

Data type: Boolean

Set to false to allow users to add files to the /etc/krb5.conf.d directory manually.

Default value: true

`krb5::config::default_settings`

NOTE: THIS IS A PRIVATE CLASS

`krb5::install`

NOTE: THIS IS A PRIVATE CLASS

Parameters

The following parameters are available in the krb5::install class:

packages
ensure
haveged

`packages`

Data type: Array[String[1]]

The list of pakages to install

Provided by module data

`ensure`

Data type: String[1]

The package state to ensure

Compatible with the Package Resource ensure parameter can

Default value: simplib::lookup('simp_options::package_ensure', { 'default_value' => 'installed' })

`haveged`

Data type: Boolean

Include haveged for entropy generation.

Default value: $krb5::haveged

`krb5::kdc`

The variables used here can be found in kdc.conf(5).

Any variable not covered here can be managed using file resources.

Examples

Add Your Own Custom Config Snippet

class my_krb5kdc {
  include 'krb5::kdc'

  file { "${krb5::kdc::config_dir}/my_snippet__custom":
    content => "My Custom Content"
  }

  Class['krb5::kdc'] -> Class['my_krb5kdc']
  Class['my_krb5kdc'] ~> Class['krb5::kdc::service']
}

Parameters

The following parameters are available in the krb5::kdc class:

trusted_nets
config_dir
ldap
firewall
haveged
auto_initialize
auto_realm
auto_management_principal
auto_generate_host_keytabs

`trusted_nets`

Data type: Simplib::Netlist

An Array of hostnames or IP addresses that are allowed into this system. Only used by the IPTables settings.

Default value: simplib::lookup('simp_options::trusted_nets', { 'default_value' => ['127.0.0.1', '::1'] })

`config_dir`

Data type: Stdlib::Absolutepath

The path to the Puppet managed config files.

Default value: '/var/kerberos/krb5kdc/kdc.conf.simp.d'

`ldap`

Data type: Boolean

If set, configure the system to incorporate LDAP components. @note This presently does not set up the LDAP back-end for KRB5

Default value: $krb5::ldap

`firewall`

Data type: Boolean

If set, use the SIMP iptables module.

Default value: $krb5::firewall

`haveged`

Data type: Boolean

If set, enable the HAVEGE daemon for entropy

Default value: $krb5::haveged

`auto_initialize`

Data type: Boolean

If set, create a default realm do all necessary work to set up the environment for production. @note This will simply use the system defaults. If you want something other than that, you'll need to call the krb5::kdc::realm define directly.

If you select this, this will automatically initialize your Kerberos database and prepare your system to run.

Default value: true

`auto_realm`

Data type: String

If $auto_initialize is set, then use this string as your default Kerberos Realm.

Default value: $facts['networking']['domain']

`auto_management_principal`

Data type: String

If $auto_initialize is set, then use this string as the primary Kerberos principal name for the default Realm.

Default value: 'puppet_auto'

`auto_generate_host_keytabs`

Data type: Boolean

If set, create keytabs for all hosts that Puppet currently knows about. @note Host Principals are identified by having a 'host/' entry in the list of principals. Any host without one of these entries will be ignored.

This is not dependent on $auto_initialize! You may want to toggle some of the parameters in the krb5::kdc::auto_keytabs class to tailor the generation.

This capability expects a ${module_name}_files module to be present in the environment's module path. It is not recommended that you place this module inside of the standard module path. Instead, the containing directory should be added to the modulepath directive of your environment.conf. @see https://docs.puppet.com/puppet/4.5/reference/config_file_environment.html With the ${module_name}_files module, you should also have a section in your Puppet auth.conf that looks something like the following and is placed before the path /file stanza.

@example auth.conf update

# Restrict access to a directory that matches the hostname
# Example: /environments/production/krb5_files/files/my.host.name.domain

path ~ ^/file_(metadata|content)/modules/krb5_files/([^/]+)
allow $2

Default value: true

`krb5::kdc::auto_keytabs`

NOTE: THIS IS A PRIVATE CLASS

The keytabs will be collected in a directory that is, by default, located at /var/kerberos/krb5kdc/generated_keytabs.

The target directory will have subdirectories created, one per host/fqdn@REALM principal that match the fqdn of the host.

Each of those directories will have a krb5.keytab file created that contains all discovered keytabs for the principal, regardless of REALM.

Note If this is enabled on a Puppet server, and $introspect is true, it will attempt to install the keytabs into the ${environmentpath}/${environment}/site_files/${module_name}_files/files/keytabs directory.

It will also attempt to automatically create host keytabs for any hosts in one of the following two directories:

${environmentpath}/${environment}/keydist
${environmentpath}/${environment}/site_files/pki_files/files/keydist

@note For any of the above, if $environmentpath is empty, or does not exist, then $confdir will be substituted for ${environmentpath}/${environment}

Parameters

The following parameters are available in the krb5::kdc::auto_keytabs class:

introspect
output_dir
all_known
user
group
realms
global_services
hosts
purge

`introspect`

Data type: Boolean

If set, attempt to discover, and create all relevant keytabs from data on the Puppet server. @note This has no effect if you aren't running on a Puppet server.

Default value: true

`output_dir`

Data type: Optional[Stdlib::Absolutepath]

The directory into which to install the keytabs.

Default value: undef

`all_known`

Data type: Boolean

If set, generate keytabs for any 'host/.*' entries known to the KDC.

Default value: false

`user`

Data type: String

The user that should own the keytab files.

Default value: 'root'

`group`

Data type: String

The group that should own the keytab files.

Default value: 'puppet'

`realms`

Data type: String

The REALMs into which the hosts should be added unless otherwise specified in the $hosts Hash. Will be auto-upcased.

Default value: simplib::lookup('krb5::kdc::auto_realm', { 'default_value' => $facts['networking']['domain'] })

`global_services`

Data type: Array[String]

An Array of Kerberos services that should be added to all hosts.

Default value: []

`hosts`

Data type:

Hash[String,
    Struct[{'ensure'             => Enum['absent','present'],
            Optional['realms']   => Array[String],
            Optional['services'] => Array[String]
    }]
  ]

A Hash of hosts for which keytabs should be generated, and kept in the KDC by Puppet. This is done as a Hash so that you don't end up with thousands of Puppet resources in your catalog. @note The Hash should be formatted as follows: { 'fqdn' => 'ensure' => ('absent'|'present') # Required 'realms' => ['REALM1', 'REALM2'] # Optional. Will be auto upcased. 'services' => ['svc1','svc2'] # Optional }

@note This will be combined with the auto-generated hosts if $auto_generate is true

Default value: {}

`purge`

Data type: Boolean

If set, purge any keytab directories for systems that we don't know about.

Default value: true

`krb5::kdc::config`

NOTE: THIS IS A PRIVATE CLASS

The variables used here can be found in kdc.conf(5).

Any variable not covered here can be managed using file resources.

Examples

Add Your Own Custom Config Snippet

class my_krb5kdc {
  include 'krb5::kdc'

  file { "${krb5::kdc::config_dir}/my_snippet__custom":
    content => "My Custom Content"
  }

  Class['krb5::kdc'] -> Class['my_krb5kdc']
  Class['my_krb5kdc'] ~> Class['krb5::kdc::service']
}

Parameters

The following parameters are available in the krb5::kdc::config class:

kdb5_password
kdc_ports
kdc_tcp_ports

`kdb5_password`

Data type: String

The password that should be used for auto-initializing the Principal database

If this password is changed, there will be no effect unless the password file is physically removed from the system

@note For safety, the Principal database will not be rebuilt unless it is physically absent from the system

Default value: simplib::passgen('kdb5kdc', { 'length' => 1024 })

`kdc_ports`

Data type: Array[Simplib::Port]

The UDP ports on which the KDC should listen

Default value: [88, 750]

`kdc_tcp_ports`

Data type: Array[Simplib::Port]

The TCP ports on which the KDC should listen

Default value: [88, 750]

`krb5::kdc::firewall`

NOTE: THIS IS A PRIVATE CLASS

Parameters

The following parameters are available in the krb5::kdc::firewall class:

kdc_ports
kdc_tcp_ports
trusted_nets
allow_kadmind
kadmind_udp_ports
kadmind_tcp_ports

`kdc_ports`

Data type: Array[Simplib::Port]

The UDP ports on which the KDC should listen

Default value: $krb5::kdc::config::kdc_ports

`kdc_tcp_ports`

Data type: Array[Simplib::Port]

The TCP ports on which the KDC should listen

Default value: $krb5::kdc::config::kdc_tcp_ports

`trusted_nets`

Data type: Simplib::Netlist

Hostnames and/or IP addresses that are allowed into this system

Only used by the IPTables settings

Default value: $krb5::kdc::config::_trusted_nets

`allow_kadmind`

Data type: Boolean

Allow remote connections to kadmind

You should probably always allow this

Default value: true

`kadmind_udp_ports`

Data type: Array[Simplib::Port]

The UDP ports on which kadmind should listen

Default value: [464]

`kadmind_tcp_ports`

Data type: Array[Simplib::Port]

The TCP ports on which kadmind should listen

Default value: [464, 749]

`krb5::kdc::install`

NOTE: THIS IS A PRIVATE CLASS

Parameters

The following parameters are available in the krb5::kdc::install class:

ensure

`ensure`

Data type: String

The package state to ensure

Accepts all valid options for the Package resource's ensure parameter

Default value: simplib::lookup('simp_options::package_ensure', { 'default_value' => 'installed' })

`krb5::kdc::selinux_hotfix`

NOTE: THIS IS A PRIVATE CLASS

The OS confinement of this class should be done elsewhere.

`krb5::kdc::service`

NOTE: THIS IS A PRIVATE CLASS

Parameters

The following parameters are available in the krb5::kdc::service class:

ensure
enable

`ensure`

Data type: String

May be one of 'running' or 'stopped'.

Default value: 'running'

`enable`

Data type: Boolean

If true, enable the services at boot time.

Default value: true

`krb5::keytab`

Users should feel free to do what they like, but this will be consistent

Parameters

The following parameters are available in the krb5::keytab class:

keytab_source
owner
group
mode

`keytab_source`

Data type: Any

The File resource compatible source for the system keytab

Default value: "puppet:///modules/krb5_files/keytabs/${facts['networking']['fqdn']}"

`owner`

Data type: Any

The keytab file owner

Default value: 'root'

`group`

Data type: Any

The keytab file group

Default value: 'root'

`mode`

Data type: Any

The keytab file mode

Default value: '0400'

Defined types

`krb5::kdc::realm`

Note: The kdc.conf file is fully managed by Puppet

See also
- kdc.conf(5)
  - -> REALMS SECTION

Parameters

The following parameters are available in the krb5::kdc::realm defined type:

initialize
auto_principal
trusted_nets
acl_file
admin_keytab
database_name
default_principal_expiration
default_principal_flags
dict_file
kadmind_port
kpasswd_port
key_stash_file
kdc_ports
kdc_tcp_ports
master_key_name
master_key_type
max_life
max_renewable_life
iprop_enable
iprop_master_ulogsize
iprop_slave_poll
supported_enctypes
reject_bad_transit
config_dir
ensure
firewall

`initialize`

Data type: Boolean

If set, auto-initialize the Realm. This will add an initial Principal for this Realm.

Default value: false

`auto_principal`

Data type: String

If $initialize is set, this principal will be created as an administrative Principal on the Realm.

Default value: 'puppet_auto'

`trusted_nets`

Data type: Simplib::Netlist

networks to allow access into the KDC realm.

Default value:

pick(
                                                                    getvar('krb5::kdc::trusted_nets'),
                                                                    simplib::lookup('simp_options::trusted_nets', { 'default_value' => ['127.0.0.1']})
                                                                  )

`acl_file`

Data type: Stdlib::Absolutepath

The path to the KDC realm ACL file.

Default value: "/var/kerberos/krb5kdc/kadm5_${name}.acl"

`admin_keytab`

Data type: Stdlib::Absolutepath

The path to the KDC realm keytab.

Default value: "/var/kerberos/krb5kdc/kadm5_${name}.keytab"

`database_name`

Data type: Optional[String]

The path to the KDC realm database.

Default value: undef

`default_principal_expiration`

Data type: Optional[String]

The Absolute Time for expiring the principal expiration date for this realm. @see http://web.mit.edu/kerberos/krb5-devel/doc/basic/date_format.html#abstime

Default value: undef

`default_principal_flags`

Data type: Array[String]

An array following the format prescribed in the man page. The absence of a '-' in front of the entry implies that a '+' will be added.

Default value: []

`dict_file`

Data type: Stdlib::Absolutepath

The path to the dictionary file of strings that are not allowed as passwords.

Default value: '/usr/share/dict/words'

`kadmind_port`

Data type: Optional[Simplib::Port]

The port on which kadmind should listen.

Default value: undef

`kpasswd_port`

Data type: Optional[Simplib::Port]

The port on which kpasswd should listen.

Default value: undef

`key_stash_file`

Data type: Optional[Stdlib::Absolutepath]

The path to the KDC realm master key.

Default value: undef

`kdc_ports`

Data type: Array[Simplib::Port]

UDP ports upon which the KDC should listen.

Default value: []

`kdc_tcp_ports`

Data type: Array[Simplib::Port]

TCP ports upon which the KDC should listen.

Default value: []

`master_key_name`

Data type: Optional[String]

The principal associated with the master key.

Default value: undef

`master_key_type`

Data type: String

The master key's key type.

Default value: 'aes256-cts'

`max_life`

Data type: Optional[String]

The maximum time period for which a ticket may be valid. Should be a valid krb5 Time Duration string. @see http://web.mit.edu/kerberos/krb5-1.13/doc/basic/date_format.html#duration

Default value: undef

`max_renewable_life`

Data type: Optional[String]

The maximum time period during which a valid ticket may be renewed. Should be a valid krb5 Time Duration string.

Default value: undef

`iprop_enable`

Data type: Optional[Boolean]

Whether incremental database propogation is enabled.

Default value: undef

`iprop_master_ulogsize`

Data type: Optional[Integer]

The maximum number of log entries for incremental propogation.

Default value: undef

`iprop_slave_poll`

Data type: Optional[String]

How often the KDC polls for new updates from the master.

Default value: undef

`supported_enctypes`

Data type: Array[String]

The default key/salt combinations for this realm.

Default value: [ 'aes256-cts:normal', 'aes128-cts:normal' ]

`reject_bad_transit`

Data type: Optional[Boolean]

Whether to check the list of transited realms for cross-realm tickets.

Default value: undef

`config_dir`

Data type: Stdlib::Absolutepath

The path to the Puppet managed config files.

Default value: simplib::lookup('krb5::kdc::config_dir', { 'default_value' => '/var/kerberos/krb5kdc/kdc.conf.simp.d' })

`ensure`

Data type: String

Whether to set or clear the key. Valid values are 'present' and 'absent'. Setting anything besides 'absent' will default to 'present'.

Default value: 'present'

`firewall`

Data type: Boolean

Whether to add appropriate iptables rules for KDC

Default value: simplib::lookup('krb5::kdc::firewall', { 'default_value' => false })

`krb5::setting`

Sections with nested sub-sections or allowed repeated keys have their own specialized defines.

See also
- krb5.conf(5)

Parameters

The following parameters are available in the krb5::setting defined type:

value
target
ensure
filemode
seltype

`value`

Data type: Scalar

The number/string/boolean that should be used to set the designated value. This will not be processed so make sure that it's what you want to output to the system.

`target`

Data type: Stdlib::Absolutepath

The target directory to which to add setting files.

Default value: pick(getvar('krb5::config::config_dir'), '/etc/krb5.conf.d')

`ensure`

Data type: String

Whether to set or clear the key. Valid values are 'present' and 'absent'. Setting anything besides 'absent' will default to 'present'.

Default value: 'present'

`filemode`

Data type: String

The File mode (per the Puppet File resource) that should be set on the settings files.

Default value: '0644'

`seltype`

Data type: String

The SELinux Type to which to set the file that holds the setting.

Default value: 'krb5_conf_t'

`krb5::setting::domain_realm`

It was specifically created so that you could pass in your domains as a name array and then your realm as a value.

See also
- krb5.conf(5)

Parameters

The following parameters are available in the krb5::setting::domain_realm defined type:

ensure
realm
target

`ensure`

Data type: String

Whether to set or clear the key. Valid values are 'present' and 'absent'. Setting anything besides 'absent' will default to 'present'.

Default value: 'present'

`realm`

Data type: String

The realm to which to map your domain.

`target`

Data type: Stdlib::Absolutepath

The target directory to which to add setting files.

Default value: pick(getvar('krb5::config::config_dir'), '/etc/krb5.conf.d')

`krb5::setting::realm`

Allows you to add a realm to the [realms] section of /etc/krb5.conf.

See also
- krb5.conf(5)
  - -> REALMS SECTION

Parameters

The following parameters are available in the krb5::setting::realm defined type:

admin_server
kdc
default_domain
v4_instance_convert
v4_realm
auth_to_local_names
auth_to_local
target
owner
group
mode

`admin_server`

Data type: Simplib::Host

The host where the admin server is running.

`kdc`

Data type: Optional[Simplib::Host]

The host where the KDC is running.

Default value: undef

`default_domain`

Data type: Optional[String]

The default domain in which hosts are assumed to be present.

Default value: undef

`v4_instance_convert`

Data type: Hash[String,String]

A hash of 'tag name' to 'tag value' mappings for default domain mapping translations.

Default value: {}

`v4_realm`

Data type: Optional[String]

The v4 realm to be used when talking to legacy systems.

Default value: undef

`auth_to_local_names`

Data type: Hash[String,String]

A hash of 'principal names' to 'local user names' per the man page.

Default value: {}

`auth_to_local`

Data type: Optional[String]

A general rule for mapping to local user names. The following values are allowed: DB: RULE: DEFAULT

Default value: undef

`target`

Data type: Stdlib::Absolutepath

The path to the Puppet managed config files.

Default value: pick(getvar('krb5::config::config_dir'), '/etc/krb5.conf.d')

`owner`

Data type: String

Default value: 'root'

`group`

Data type: String

Default value: 'root'

`mode`

Data type: String

Default value: '0644'

Resource types

`krb5_acl`

Manages krb5 kadmind ACL entries per kadmind(8). When removing an entry, you can specify a regex for the operation_target and all associated entries will be removed.

Properties

The following properties are available in the krb5_acl type.

`ensure`

Valid values: present, absent

The basic property that the resource should be in.

Default value: present

`operation_mask`

Valid values: %r{^([admcilpADMCILP]+|[x*])$}

The operation mask per kadmind(8). Be aware that lower case activates a mask and upper case deactivates it

Parameters

The following parameters are available in the krb5_acl type.

name
operation_target
principal
provider
target

`name`

namevar

A required, but meaningless, name

`operation_target`

An optional partially, or fully, qualified Kerberos 5 principal name upon which 'principal' is allowed to operate. If this is specified, the 'principal', 'operation_mask', and 'ensure' options will be restricted. This must be specified as a ruby regex without '/' in the case of ensure => 'absent'.

Default value: undef

`principal`

The partially, or fully, qualified Kerberos 5 principal name. This is what must appear as the usual 'name' of the resource.

`provider`

The specific backend to use for this krb5_acl resource. You will seldom need to specify this --- Puppet will usually discover the appropriate provider for your platform.

`target`

The ACL file upon which to operate

Default value: /var/kerberos/krb5kdc/kadm5.acl

`krb5kdc_auto_keytabs`

Auto-generates principals and keytabs on a functional KDC and outputs the keytabs to a directory of the user's choosing.

Can optionally take a hash of hosts, with associated principal metadata, to be created on the KDC. Will warn if you are attempting to add a host that does not have a valid REALM.

Properties

The following properties are available in the krb5kdc_auto_keytabs type.

`ensure`

Valid values: present, generated, absent

The state to enforce on the resource

Default value: present

Parameters

The following parameters are available in the krb5kdc_auto_keytabs type.

all_known
global_services
group
hosts
introspect
name
provider
purge
realms
user

`all_known`

Valid values: true, false, yes, no

Generate keytabs for any 'host/.*' entires known to the KDC.

Default value: false

`global_services`

The global services that should be applied to every auto-generated principal

`group`

The group that should own the generated keytabs, defaults to '#{Puppet[:group]}' when installing into a Puppet Environment and 'root' otherwise.

Default value: group

`hosts`

A Hash of hosts that should be managed in the KDC.

The Hash format should be as follows:

{ 'fqdn' => { 'ensure' => ('absent' | 'present') # Required 'realms' => ['REALM1', 'REALM2'] # Optional. Will be auto-upcased 'services' => ['svc1','svc2'] # Optional } }

If '$global_services' is set, it will be added to the list of services for each host here.

`introspect`

Valid values: true, false, yes, no

Attempt to discover, and create, all relevant keytabs from data on the Puppet server.

This will create host principals for discovered entities if they do not exist already!

This takes a best guess from the SIMP default PKI key locations:

${environmentpath}/${environment}/keydist
/var/simp/environments/${environment}/site_files/pki_files/files/keydist

If $environmentpath is not set, then $confdir will be substituted for ${environmentpath}/${environment}

Default value: true

`name`

namevar

The output directory to which to write the keytabs

If 'default' will be set to either /var/simp/environments/${environment}/site_files/krb5_files/files/keytabs or /var/kerberos/krb5kdc/generated_keytabs depending on which target path exists.

`provider`

The specific backend to use for this krb5kdc_auto_keytabs resource. You will seldom need to specify this --- Puppet will usually discover the appropriate provider for your platform.

`purge`

Valid values: true, false, yes, no

Remove all unmanaged keytabs from the '$name' directory

Default value: true

`realms`

The realms under which the hosts should be generated

Default value: Facter.value(:networking)['domain']

`user`

The user that should own the generated keytabs, defaults to '#{Puppet[:user]}' when installing into a Puppet Environment and 'root' otherwise.

Default value: root

Functions

`krb5::munge_conf_filename`

Type: Ruby 4.x API

Returns a string that is safe to use as a filename for including in krb5 configuration files.

`krb5::munge_conf_filename(String $name)`

Returns a string that is safe to use as a filename for including in krb5 configuration files.

Returns: Any String transformed filename

`name`

Data type: String

String to be converted to a k4b6 configuration filename

`krb5::validate_time_duration`

Type: Ruby 4.x API

Validates that the passed string is a valid krb5 time duration per http://web.mit.edu/kerberos/krb5-1.13/doc/basic/date_format.html#duration.

`krb5::validate_time_duration(String $time_duration)`

Validates that the passed string is a valid krb5 time duration per http://web.mit.edu/kerberos/krb5-1.13/doc/basic/date_format.html#duration.

Returns: Undef

`time_duration`

Data type: String

Time duration string to be validated

Fri Sep 13 2024 Steven Pritchard steve@sicura.us - 7.8.0

[puppetsync] Update module dependencies to support simp-iptables 7.x

Wed Jul 03 2024 Steven Pritchard steve@sicura.us - 7.7.2

Clean up legacy fact usage to support puppet 8

Wed Jan 17 2024 Richard Gardner rick@sicura.us - 7.7.1

Updated hiera.yaml facts to support puppet 8

Mon Oct 23 2023 Steven Pritchard steve@sicura.us - 7.7.0

[puppetsync] Add EL9 support

Wed Oct 11 2023 Steven Pritchard steve@sicura.us - 7.6.0

[puppetsync] Updates for Puppet 8
- These updates may include the following:
  - Update Gemfile
  - Add support for Puppet 8
  - Drop support for Puppet 6
  - Update module dependencies

Thu Sep 07 2023 Steven Pritchard steve@sicura.us - 7.5.0

Add AlmaLinux 8 support

Mon Jun 12 2023 Chris Tessmer chris.tessmer@onyxpoint.com - 7.4.0

Add RockyLinux 8 support

Mon Sep 26 2022 Trevor Vaughan trevor@sicura.us - 7.3.0

Added:
- The module now supports Amazon Linux 2
Changed:
- Added a .rubocop.yml
- Rubocop'd the Ruby

Tue Jun 15 2021 Chris Tessmer chris.tessmer@onyxpoint.com - 7.2.0

Removed
- Removed support for Puppet 5
- Removed unnecessary use of top scope in manifests
Ensured support for Puppet 7 in requirements and stdlib

Thu Jan 07 2021 Chris Tessmer chris.tessmer@onyxpoint.com - 7.1.1

Removed EL6 support

Wed Dec 18 2019 Trevor Vaughan tvaughan@onyxpoint.com - 7.1.0-0

Add EL8 support
- Update SELinux hotfix
- Migrate SELinux hotfix to vox_selinux::module
Update documentation
Add REFERENCE.md

Fri Aug 02 2019 Robert Vincent pillarsdotnet@gmail.com - 7.1.0-0

Remove Puppet 4 support
Add Puppet 6 support
Add puppetlabs-stdlib 6 support
Support puppetlabs/stdlib 6.x and puppet 6.x.

Tue Feb 12 2019 Liz Nemsick lnemsick.simp@gmail.com - 7.0.5-0

Use simplib::passgen() in lieu of passgen(), a deprecated simplib Puppet 3 function.
Use simplib::validate_re_array() in lieu of validate_re_array(), a deprecated simplib Puppet 3 function.
Removed unnecessary use of validate_port() on parameters of type Simplib::Port
Update the upper bound of stdlib to < 6.0.0
Update a URL in the README.md

Wed Nov 07 2018 Liz Nemsick lnemsick.simp@gmail.com - 7.0.4-0

Update badges and contribution guide URL in README.md

Fri Oct 12 2018 Nick Miller nick.miller@onyxpoint.com - 7.0.4-0

Changed the packages from 'latest' to 'installed'
Ensure parameters will also now respect simp_options::package_ensure

Fri Sep 07 2018 Liz Nemsick lnemsick.simp@gmail.com - 7.0.4-0

Drop Hiera 4 support

Wed Mar 21 2018 Trevor Vaughan tvaughan@onyxpoint.com - 7.0.4-0

Add support for Puppet 5 and OEL

Mon Oct 30 2017 Trevor Vaughan tvaughan@onyxpoint.com - 7.0.3-0

Allow users to modify the owner, group, and mode of files that may be used by multiple subsystems

Thu Jun 22 2017 Liz Nemsick lnemsick.simp@gmail.com - 7.0.2-0

Update custom Puppet 3 functions to namespaced, Puppet 4 functions
Fix most of the puppet strings problems
Update puppet requirement and remove OBE pe requirement in metadata.json

Wed Apr 05 2017 Jeanne Greulich jeanne.greulich@onyxpoint.com 7.0.1-0

Fixed Facter call in type for krb5kdc_auto_keytabs.rb

Fri Dec 16 2016 Nick Markowski nmarkowski@keywcorp.com - 6.0.0-0

Updated global catalysts

Tue Nov 22 2016 Liz Nemsick lnemsick.simp@gmail.com - 6.0.0-0

Update version to reflect SIMP6 dependencies
Update to SIMP6 dependencies
Minor cleanup

Wed Nov 16 2016 Liz Nemsick lnemsick.simp@gmail.com - 5.0.9-0

Updated iptables dependency version

Thu Nov 10 2016 Liz Nemsick lnemsick.simp@gmail.com - 5.0.9-0

Eliminated use of deprecated Puppet.newtype

Wed Sep 28 2016 Chris Tessmer chris.tessmer@onyxpoint.com - 5.0.7-0

Fix Forge haveged dependency name

Thu Sep 01 2016 Jeanne Greulich jeanne.greulich@onyxpoint.com - 5.0.6-0

Ensure that the /etc/krb5.simp.d/realm* files are mode 644

Tue Aug 16 2016 Trevor Vaughan tvaughan@onyxpoint.com - 5.0.5-0

Adapted to the new 'site_files' directory
Fixed a bug in the selinux policy in EL7

Thu Aug 11 2016 Nick Miller nick.miller@onyxpoint.com - 5.0.4-0

Keytab file source and permission corrections

Tue Jul 22 2016 Trevor Vaughan tvaughan@onyxpoint.com - 5.0.3-0

The Realm KDC must be explicitly specified

Mon Jul 11 2016 Trevor Vaughan tvaughan@onyxpoint.com - 5.0.2-0

Fixed a bug in the krb5kdc_auto_keytab provider where passed hosts were not getting the realms array integrated.

Thu Jun 30 2016 Nick Markowski nmarkowski@keywcorp.com - 5.0.1-0

Haveged now included by default.

Fri May 27 2016 Trevor Vaughan tvaughan@onyxpoint.com - 5.0.0-0

Overhaul of the entire module
Removed all use of 'concat'
Split the entire module into new-style components
Added tests

Fri Jan 16 2015 Trevor Vaughan tvaughan@onyxpoint.com - 4.1.0-3

Changed puppet-server requirement to puppet

Mon May 19 2014 Kendall Moore kmoore@keywcorp.com - 4.1.0-2

Removed all stock classes so they can be ported to the SIMP module.

Mon Apr 21 2014 Trevor Vaughan tvaughan@onyxpoint.com - 4.1.0-1

Updated to avoid globals and call Hiera instead.

Sat Mar 01 2014 Kendall Moore kmoore@keywcorp.com - 4.1.0-0

Refactored to pass all lint tests.
Added rspec tests for test coverage.

Mon Oct 14 2013 Trevor Vaughan tvaughan@onyxpoint.com - 0.0.1-3

Updated the custom types to no longer use Puppet::Util::FileLocking since it has been removed.

Mon Oct 07 2013 Nick Markowski nmarkowski@keywcorp.com - 0.0.1-2

Updated template to reference instance variables with @

Mon Jan 28 2013 Maintenance - 0.0.1-1

Create a Cucumber test that includes krb5 in the manifest and runs puppet successfully.

Mon Sep 10 2012 Maintenance - 0.0.1-0

Initial implementation of krb5 module.

pupmod-simp-krb5 - A Puppet Module for managing MIT Kerberos

--

Per Section 105 of the Copyright Act of 1976, these works are not entitled to
domestic copyright protection under US Federal law.

The US Government retains the right to pursue copyright protections outside of
the United States.

The United States Government has unlimited rights in this software and all
derivatives thereof, pursuant to the contracts under which it was developed and
the License under which it falls.

---

Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at

    http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.

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About Forge

Getting Started

krb5

Version information

This version is compatible with:

Start using this module

Documentation

Krb5

Table of Contents

Module Description

Setup

What krb5 affects

Setup Requirements

Beginning with krb5

Usage

Automatically manage the KDC and keytabs on clients

Keytab Propagation

Manual Configuration and Expansion

Creating Admin Principals

ACL Configuration

Create Your Admin Principal

Creating Host Principals

Create Your Keytabs

Integration with SIMP NFS Module

Limitations

Development

Acceptance tests

Reference

Table of Contents

Classes

Defined types

Resource types

Functions

Classes

krb5

Parameters

ldap

firewall

haveged

enctypes

krb5::client

Parameters

realms

krb5::config

Parameters

config_dir

default_realm

realm_domains

dns_lookup_realm

dns_lookup_kdc

renew_lifetime

forwardable

clockskew

permitted_tgs_enctypes

permitted_tkt_enctypes

permitted_enctypes

puppet_exclusive_managed

krb5::config::default_settings

krb5::install

Parameters

packages

ensure

haveged

krb5::kdc

Examples

Add Your Own Custom Config Snippet

Parameters

trusted_nets

config_dir

ldap

firewall

haveged

auto_initialize

`krb5`

`ldap`

`firewall`

`haveged`

`enctypes`

`krb5::client`

`realms`

`krb5::config`

`config_dir`

`default_realm`

`realm_domains`

`dns_lookup_realm`

`dns_lookup_kdc`

`renew_lifetime`

`forwardable`

`clockskew`

`permitted_tgs_enctypes`

`permitted_tkt_enctypes`

`permitted_enctypes`

`puppet_exclusive_managed`

`krb5::config::default_settings`

`krb5::install`

`packages`

`ensure`

`haveged`

`krb5::kdc`

`trusted_nets`

`config_dir`

`ldap`

`firewall`

`haveged`

`auto_initialize`

`auto_realm`

`auto_management_principal`

`auto_generate_host_keytabs`

`krb5::kdc::auto_keytabs`

`introspect`

`output_dir`

`all_known`

`user`

`group`

`realms`

`global_services`

`hosts`

`purge`

`krb5::kdc::config`

`kdb5_password`

`kdc_ports`

`kdc_tcp_ports`

`krb5::kdc::firewall`

`kdc_ports`

`kdc_tcp_ports`

`trusted_nets`

`allow_kadmind`

`kadmind_udp_ports`

`kadmind_tcp_ports`

`krb5::kdc::install`

`ensure`

`krb5::kdc::selinux_hotfix`

`krb5::kdc::service`

`ensure`

`enable`

`krb5::keytab`

`keytab_source`

`owner`

`group`

`mode`

`krb5::kdc::realm`

`initialize`

`auto_principal`

`trusted_nets`

`acl_file`

`admin_keytab`

`database_name`

`default_principal_expiration`

`default_principal_flags`

`dict_file`

`kadmind_port`

`kpasswd_port`

`key_stash_file`