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<article class="markdown-body">
<header>
<h1 class="title">Direct AD Integration role</h1>
</header>
<hr>
<nav id="TOC">
<h1 class="toc-title">Contents</h1>
<ul>
<li><a href="#supported-distributions"
id="toc-supported-distributions">Supported Distributions</a></li>
<li><a href="#requirements" id="toc-requirements">Requirements</a>
<ul>
<li><a href="#collection-requirements"
id="toc-collection-requirements">Collection requirements</a></li>
</ul></li>
<li><a href="#role-variables" id="toc-role-variables">Role Variables</a>
<ul>
<li><a href="#required-variables" id="toc-required-variables">Required
variables</a>
<ul>
<li><a href="#ad_integration_realm"
id="toc-ad_integration_realm">ad_integration_realm</a></li>
<li><a href="#ad_integration_password"
id="toc-ad_integration_password">ad_integration_password</a></li>
</ul></li>
<li><a href="#optional-variables" id="toc-optional-variables">Optional
variables</a>
<ul>
<li><a href="#ad_integration_user"
id="toc-ad_integration_user">ad_integration_user</a></li>
<li><a href="#ad_integration_join_to_dc"
id="toc-ad_integration_join_to_dc">ad_integration_join_to_dc</a></li>
<li><a href="#ad_integration_force_rejoin"
id="toc-ad_integration_force_rejoin">ad_integration_force_rejoin</a></li>
<li><a href="#ad_integration_auto_id_mapping"
id="toc-ad_integration_auto_id_mapping">ad_integration_auto_id_mapping</a></li>
<li><a href="#ad_integration_client_software"
id="toc-ad_integration_client_software">ad_integration_client_software</a></li>
<li><a href="#ad_integration_membership_software"
id="toc-ad_integration_membership_software">ad_integration_membership_software</a></li>
<li><a href="#ad_integration_computer_ou"
id="toc-ad_integration_computer_ou">ad_integration_computer_ou</a></li>
<li><a href="#ad_integration_manage_timesync"
id="toc-ad_integration_manage_timesync">ad_integration_manage_timesync</a></li>
<li><a href="#ad_integration_timesync_source"
id="toc-ad_integration_timesync_source">ad_integration_timesync_source</a></li>
<li><a href="#ad_integration_manage_crypto_policies"
id="toc-ad_integration_manage_crypto_policies">ad_integration_manage_crypto_policies</a></li>
<li><a href="#ad_integration_allow_rc4_crypto"
id="toc-ad_integration_allow_rc4_crypto">ad_integration_allow_rc4_crypto</a></li>
<li><a href="#ad_integration_manage_dns"
id="toc-ad_integration_manage_dns">ad_integration_manage_dns</a></li>
<li><a href="#ad_integration_dns_server"
id="toc-ad_integration_dns_server">ad_integration_dns_server</a></li>
<li><a href="#ad_integration_dns_connection_name"
id="toc-ad_integration_dns_connection_name">ad_integration_dns_connection_name</a></li>
<li><a href="#ad_integration_dns_connection_type"
id="toc-ad_integration_dns_connection_type">ad_integration_dns_connection_type</a></li>
<li><a href="#ad_dyndns_update"
id="toc-ad_dyndns_update">ad_dyndns_update</a></li>
<li><a href="#ad_dyndns_ttl"
id="toc-ad_dyndns_ttl">ad_dyndns_ttl</a></li>
<li><a href="#ad_dyndns_iface"
id="toc-ad_dyndns_iface">ad_dyndns_iface</a></li>
<li><a href="#ad_dyndns_refresh_interval"
id="toc-ad_dyndns_refresh_interval">ad_dyndns_refresh_interval</a></li>
<li><a href="#ad_dyndns_update_ptr"
id="toc-ad_dyndns_update_ptr">ad_dyndns_update_ptr</a></li>
<li><a href="#ad_dyndns_force_tcp"
id="toc-ad_dyndns_force_tcp">ad_dyndns_force_tcp</a></li>
<li><a href="#ad_dyndns_auth"
id="toc-ad_dyndns_auth">ad_dyndns_auth</a></li>
<li><a href="#ad_dyndns_server"
id="toc-ad_dyndns_server">ad_dyndns_server</a></li>
<li><a href="#ad_integration_join_parameters"
id="toc-ad_integration_join_parameters">ad_integration_join_parameters</a></li>
<li><a href="#ad_integration_sssd_settings"
id="toc-ad_integration_sssd_settings">ad_integration_sssd_settings</a></li>
<li><a href="#ad_integration_sssd_custom_settings"
id="toc-ad_integration_sssd_custom_settings">ad_integration_sssd_custom_settings</a></li>
<li><a href="#ad_integration_preserve_authselect_profile"
id="toc-ad_integration_preserve_authselect_profile">ad_integration_preserve_authselect_profile</a></li>
</ul></li>
</ul></li>
<li><a href="#example-playbook" id="toc-example-playbook">Example
Playbook</a></li>
<li><a href="#rpm-ostree" id="toc-rpm-ostree">rpm-ostree</a></li>
<li><a href="#license" id="toc-license">License</a></li>
<li><a href="#author-information" id="toc-author-information">Author
Information</a></li>
</ul>
</nav>
<hr>
<p>An ansible role which configures direct Active Directory
integration.</p>
<h1 id="supported-distributions">Supported Distributions</h1>
<ul>
<li>RHEL7+, CentOS7+</li>
<li>Fedora</li>
</ul>
<h1 id="requirements">Requirements</h1>
<p>In order to join to the domain, you must use an Active Directory user
which has sufficient join permissions. It is not recommended to use the
Administrator user as the security footprint of this user is too
large.</p>
<p>See <a
href="https://www.mankier.com/8/adcli#Delegated_Permissions">Delegated
Permissions</a> for the explicit permissions a user must have.</p>
<p>Time must be in sync with Active Directory servers. The
ad_integration role will use the timesync system role for this if the
user specifies <code>ad_integration_manage_timesync</code> to true and
provides a value for <code>ad_integration_timesync_source</code> to use
as a timesource.</p>
<p>RHEL8 (and newer) and Fedora no longer support RC4 encryption out of
the box, it is recommended to enable AES in Active Directory, if not
possible then the AD-SUPPORT crypto policy must be enabled. The
integration role will use the crypto_policies system role for this if
the user sets the <code>ad_integration_manage_crypto_policies</code> and
<code>ad_integration_allow_rc4_crypto</code> parameters to true.</p>
<p>The Linux system must be able to resolve default AD DNS SRV
records.</p>
<p>The following firewall ports must be opened on the AD server side,
reachable from the Linux client.</p>
<table>
<thead>
<tr class="header">
<th>Source Port</th>
<th>Destination</th>
<th>Protocol</th>
<th>Service</th>
</tr>
</thead>
<tbody>
<tr class="odd">
<td>1024:65535</td>
<td>53</td>
<td>TCP and UDP</td>
<td>DNS</td>
</tr>
<tr class="even">
<td>1024:65535</td>
<td>389</td>
<td>TCP and UDP</td>
<td>LDAP</td>
</tr>
<tr class="odd">
<td>1024:65535</td>
<td>636</td>
<td>TCP</td>
<td>LDAPS</td>
</tr>
<tr class="even">
<td>1024:65535</td>
<td>88</td>
<td>TCP and UDP</td>
<td>Kerberos</td>
</tr>
<tr class="odd">
<td>1024:65535</td>
<td>464</td>
<td>TCP and UDP</td>
<td>Kerberos change/set password (kadmin)</td>
</tr>
<tr class="even">
<td>1024:65535</td>
<td>3268</td>
<td>TCP</td>
<td>LDAP Global Catalog</td>
</tr>
<tr class="odd">
<td>1024:65535</td>
<td>3269</td>
<td>TCP</td>
<td>LDAP Global Catalog SSL</td>
</tr>
<tr class="even">
<td>1024:65535</td>
<td>123</td>
<td>UDP</td>
<td>NTP/Chrony(Optional)</td>
</tr>
<tr class="odd">
<td>1024:65535</td>
<td>323</td>
<td>UDP</td>
<td>NTP/Chrony (Optional)</td>
</tr>
</tbody>
</table>
<h2 id="collection-requirements">Collection requirements</h2>
<p>This role requires additional modules from external collections.
Please use the following command to install them:</p>
<div class="sourceCode" id="cb1"><pre
class="sourceCode bash"><code class="sourceCode bash"><span id="cb1-1"><a href="#cb1-1" aria-hidden="true" tabindex="-1"></a><span class="ex">ansible-galaxy</span> collection install <span class="at">-vv</span> <span class="at">-r</span> meta/collection-requirements.yml</span></code></pre></div>
<h1 id="role-variables">Role Variables</h1>
<h2 id="required-variables">Required variables</h2>
<h3 id="ad_integration_realm">ad_integration_realm</h3>
<p>Active Directory realm, or domain name to join</p>
<h3 id="ad_integration_password">ad_integration_password</h3>
<p>The password of the user used to authenticate with when joining the
machine to the realm. Do not use cleartext - use Ansible Vault to
encrypt the value.</p>
<h2 id="optional-variables">Optional variables</h2>
<h3 id="ad_integration_user">ad_integration_user</h3>
<p>The user name to be used to authenticate with when joining the
machine to the realm.</p>
<p>Default: Administrator</p>
<h3 id="ad_integration_join_to_dc">ad_integration_join_to_dc</h3>
<p>an Active Directory domain controller's hostname (do not use IP
address) may be specified to join via that domain controller
directly.</p>
<p>Default: Not set</p>
<h3 id="ad_integration_force_rejoin">ad_integration_force_rejoin</h3>
<p>Leave existing domain prior to performing join. This might be needed
if the keytab is unable to authenticate with the machine account to the
AD domain.</p>
<p>Default: false</p>
<h3
id="ad_integration_auto_id_mapping">ad_integration_auto_id_mapping</h3>
<p>perform automatic UID/GID mapping for users and groups, set to
<code>false</code> to rely on POSIX attributes already present in Active
Directory.</p>
<p>Default: true</p>
<h3
id="ad_integration_client_software">ad_integration_client_software</h3>
<p>Only join realms for which we can use the given client software.
Possible values include sssd or winbind. Not all values are supported
for all realms.</p>
<p>Default: Automatic selection</p>
<h3
id="ad_integration_membership_software">ad_integration_membership_software</h3>
<p>The software to use when joining to the realm. Possible values
include samba or adcli. Not all values are supported for all realms.</p>
<p>Default: Automatic selection</p>
<h3 id="ad_integration_computer_ou">ad_integration_computer_ou</h3>
<p>The distinguished name of an organizational unit to create the
computer account. It can be relative to the Root DSE, or a complete LDAP
DN.</p>
<p>Default: Default AD computer container</p>
<h3
id="ad_integration_manage_timesync">ad_integration_manage_timesync</h3>
<p>If true, the ad_integration role will use
fedora.linux_system_roles.timesync. Requires providing a value for
<code>ad_integration_timesync_source</code> to use as a time source.</p>
<p>Default: false</p>
<h3
id="ad_integration_timesync_source">ad_integration_timesync_source</h3>
<p>Hostname or IP address of time source to synchronize the system clock
with. Providing this variable automatically sets
<code>ad_integration_manage_timesync</code> to true.</p>
<h3
id="ad_integration_manage_crypto_policies">ad_integration_manage_crypto_policies</h3>
<p>If true, the ad_integration role will use
fedora.linux_system_roles.crypto_policies as needed</p>
<p>Default: false</p>
<h3
id="ad_integration_allow_rc4_crypto">ad_integration_allow_rc4_crypto</h3>
<p>If true, the ad_integration role will set the crypto policy allowing
RC4 encryption. Providing this variable automatically sets
ad_integration_manage_crypto_policies to true</p>
<p>Default: false</p>
<h3 id="ad_integration_manage_dns">ad_integration_manage_dns</h3>
<p>If true, the ad_integration role will use
fedora.linux_system_roles.network to add the provided dns server (see
below) with manual DNS configuration to an existing connection. If true
then the following variables are required:</p>
<ul>
<li><code>ad_integration_dns_server</code> - DNS server to add</li>
<li><code>ad_integration_dns_connection_name</code> - Existing network
connection name to configure</li>
<li><code>ad_integration_dns_connection_type</code> - Existing network
connection type to configure</li>
</ul>
<h3 id="ad_integration_dns_server">ad_integration_dns_server</h3>
<p>IP address of DNS server to add to existing networking configuration.
Only applicable if <code>ad_integration_manage_dns</code> is true</p>
<h3
id="ad_integration_dns_connection_name">ad_integration_dns_connection_name</h3>
<p>The name option identifies the connection profile to be configured by
the network role. It is not the name of the networking interface for
which the profile applies. Only applicable if
<code>ad_integration_manage_dns</code> is true</p>
<h3
id="ad_integration_dns_connection_type">ad_integration_dns_connection_type</h3>
<p>Network connection type such as ethernet, bridge, bond...etc, the
network role contains a list of possible values. Only applicable if
<code>ad_integration_manage_dns</code> is true</p>
<h3 id="ad_dyndns_update">ad_dyndns_update</h3>
<p>If true, SSSD is configured to automatically update the AD DNS server
with the IP address of the client.</p>
<p>Default: false</p>
<h3 id="ad_dyndns_ttl">ad_dyndns_ttl</h3>
<p>Optional. The TTL, in seconds, to apply to the client's DNS record
when updating it. Only applicable if <code>ad_dyndns_update</code> is
true</p>
<p><strong>Note:</strong> This will override the TTL set by an
administrator on the server.</p>
<p>Default: 3600</p>
<h3 id="ad_dyndns_iface">ad_dyndns_iface</h3>
<p>Optional. Interface or a list of interfaces whose IP addresses should
be used for dynamic DNS updates. Special value "*" implies all IPs from
all interfaces should be used. Only applicable if
<code>ad_dyndns_update</code> is true</p>
<p>Default: Use the IP addresses of the interface which is used for AD
LDAP connection</p>
<h3 id="ad_dyndns_refresh_interval">ad_dyndns_refresh_interval</h3>
<p>Optional. How often should, in seconds, periodic DNS updates be
performed in addition to when the back end goes online. Only applicable
if <code>ad_dyndns_update</code> is true</p>
<p><strong>Note:</strong> lowest possible value is 60 seconds. If value
less than 60 is specified sssd will assume lowest value only.</p>
<p>Default: 86400</p>
<h3 id="ad_dyndns_update_ptr">ad_dyndns_update_ptr</h3>
<p>Optional. If true, the PTR record should also be explicitly updated.
Only applicable if <code>ad_dyndns_update</code> is true</p>
<p>Default: true</p>
<h3 id="ad_dyndns_force_tcp">ad_dyndns_force_tcp</h3>
<p>Optional. If true, the nsupdate utility should default to using TCP
for communicating with the DNS server. Only applicable if
<code>ad_dyndns_update</code> is true</p>
<p>Default: false</p>
<h3 id="ad_dyndns_auth">ad_dyndns_auth</h3>
<p>Optional. If true, GSS-TSIG authentication will be used for secure
updates with the DNS server when updating A and AAAA records. Only
applicable if <code>ad_dyndns_update</code> is true</p>
<p>Default: true</p>
<h3 id="ad_dyndns_server">ad_dyndns_server</h3>
<p>Optional. DNS server to use when performing a DNS update when
autodetection settings fail. Only applicable if
<code>ad_dyndns_update</code> is true</p>
<p>Default: None (let nsupdate choose the server)</p>
<h3
id="ad_integration_join_parameters">ad_integration_join_parameters</h3>
<p>Additional parameters (as a string) supplied directly to the realm
join command. Useful if some specific configuration like
--user-principal=host/name@REALM or --use-ldaps is needed. See man realm
for details. Example: ad_integration_join_parameters: "--user-principal
host/<a
href="mailto:[email protected]">[email protected]</a>"</p>
<h3 id="ad_integration_sssd_settings">ad_integration_sssd_settings</h3>
<p>A list of setting to be included into the <code>[sssd]</code> section
of the sssd.conf file. See sssd.conf man pages for details. Example:</p>
<div class="sourceCode" id="cb2"><pre
class="sourceCode yaml"><code class="sourceCode yaml"><span id="cb2-1"><a href="#cb2-1" aria-hidden="true" tabindex="-1"></a><span class="fu">ad_integration_sssd_settings</span><span class="kw">:</span></span>
<span id="cb2-2"><a href="#cb2-2" aria-hidden="true" tabindex="-1"></a><span class="at"> </span><span class="kw">-</span><span class="at"> </span><span class="fu">key</span><span class="kw">:</span><span class="at"> </span><span class="st">"configuration_name"</span></span>
<span id="cb2-3"><a href="#cb2-3" aria-hidden="true" tabindex="-1"></a><span class="at"> </span><span class="fu">value</span><span class="kw">:</span><span class="at"> </span><span class="st">"configuration_value"</span></span></code></pre></div>
<h3
id="ad_integration_sssd_custom_settings">ad_integration_sssd_custom_settings</h3>
<p>A list of custom setting to be included into the
<code>[domain/$REALM]</code> section of the sssd.conf file. See
sssd.conf man pages for details. Example:</p>
<div class="sourceCode" id="cb3"><pre
class="sourceCode yaml"><code class="sourceCode yaml"><span id="cb3-1"><a href="#cb3-1" aria-hidden="true" tabindex="-1"></a><span class="fu">ad_integration_sssd_custom_settings</span><span class="kw">:</span></span>
<span id="cb3-2"><a href="#cb3-2" aria-hidden="true" tabindex="-1"></a><span class="at"> </span><span class="kw">-</span><span class="at"> </span><span class="fu">key</span><span class="kw">:</span><span class="at"> </span><span class="st">"configuration_name"</span></span>
<span id="cb3-3"><a href="#cb3-3" aria-hidden="true" tabindex="-1"></a><span class="at"> </span><span class="fu">value</span><span class="kw">:</span><span class="at"> </span><span class="st">"configuration_value"</span></span></code></pre></div>
<h3
id="ad_integration_preserve_authselect_profile">ad_integration_preserve_authselect_profile</h3>
<p>This is a boolean, default is <code>false</code>. If
<code>true</code>, configure realmd.conf to remove the
<code>authselect</code> command from <code>sssd-enable-logins</code> to
avoid overwriting previous PAM/nsswitch changes, until <a
href="https://issues.redhat.com/browse/RHEL-5101">RHEL-5101</a> is
addressed.</p>
<h1 id="example-playbook">Example Playbook</h1>
<p>The following is an example playbook to setup direct Active Directory
integration with AD domain <code>domain.example.com</code>, the join
will be performed with user Administrator using the vault stored
password. Prior to the join, the crypto policy for AD SUPPORT with RC4
encryption allowed will be set.</p>
<div class="sourceCode" id="cb4"><pre
class="sourceCode yaml"><code class="sourceCode yaml"><span id="cb4-1"><a href="#cb4-1" aria-hidden="true" tabindex="-1"></a><span class="kw">-</span><span class="at"> </span><span class="fu">hosts</span><span class="kw">:</span><span class="at"> all</span></span>
<span id="cb4-2"><a href="#cb4-2" aria-hidden="true" tabindex="-1"></a><span class="at"> </span><span class="fu">vars</span><span class="kw">:</span></span>
<span id="cb4-3"><a href="#cb4-3" aria-hidden="true" tabindex="-1"></a><span class="at"> </span><span class="fu">ad_integration_realm</span><span class="kw">:</span><span class="at"> </span><span class="st">"domain.example.com"</span></span>
<span id="cb4-4"><a href="#cb4-4" aria-hidden="true" tabindex="-1"></a><span class="at"> </span><span class="fu">ad_integration_password</span><span class="kw">:</span><span class="at"> !vault | …vault encrypted password…</span></span>
<span id="cb4-5"><a href="#cb4-5" aria-hidden="true" tabindex="-1"></a><span class="at"> </span><span class="fu">ad_integration_manage_crypto_policies</span><span class="kw">:</span><span class="at"> </span><span class="ch">true</span></span>
<span id="cb4-6"><a href="#cb4-6" aria-hidden="true" tabindex="-1"></a><span class="at"> </span><span class="fu">ad_integration_allow_rc4_crypto</span><span class="kw">:</span><span class="at"> </span><span class="ch">true</span></span>
<span id="cb4-7"><a href="#cb4-7" aria-hidden="true" tabindex="-1"></a><span class="at"> </span><span class="fu">roles</span><span class="kw">:</span></span>
<span id="cb4-8"><a href="#cb4-8" aria-hidden="true" tabindex="-1"></a><span class="at"> </span><span class="kw">-</span><span class="at"> linux-system-roles.ad_integration</span></span></code></pre></div>
<h1 id="rpm-ostree">rpm-ostree</h1>
<p>See README-ostree.md</p>
<h1 id="license">License</h1>
<p>MIT.</p>
<h1 id="author-information">Author Information</h1>
<p>Justin Stephenson (<a
href="mailto:[email protected]">[email protected]</a>)</p>
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