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<article class="markdown-body">
<header>
<h1 class="title">crypto_policies</h1>
</header>
<hr>
<nav id="TOC">
<h1 class="toc-title">Contents</h1>
<ul>
<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="#variables-exported-by-the-role"
id="toc-variables-exported-by-the-role">Variables Exported by the
Role</a></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>This Ansible role manages system-wide crypto policies.</p>
<p>This concept is well adopted since Red Hat Enterprise Linux 8 and in
Fedora.</p>
<h1 id="requirements">Requirements</h1>
<p>See below</p>
<h2 id="collection-requirements">Collection requirements</h2>
<p>If you want to manage <code>rpm-ostree</code> systems with this role,
you will need to install additional collections. Please run the
following command line to install the collection.</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>
<p>By default, this role will just report system status as described in
the following section.</p>
<ul>
<li><code>crypto_policies_policy</code></li>
</ul>
<p>Use this variable to specify the desired crypto policy on the target
system, which can be either the base policy or a base policy with
subpolicies as accepted by the <code>update-crypto-policies</code> tool.
For example <code>FUTURE</code> or <code>DEFAULT:NO-SHA1:GOST</code>.
The specified base policy and subpolicies must be available on the
target system.</p>
<p>The default value is <code>null</code> meaning the configuration is
not changed and the role will just collect the facts below.</p>
<p>The list of available base policies on the target system can be found
in the <code>crypto_policies_available_policies</code> variable and the
list of available subpolicies can be found in the
<code>crypto_policies_available_subpolicies</code> variable.</p>
<ul>
<li><code>crypto_policies_reload</code></li>
</ul>
<p>By default (<code>true</code>), updating crypto policies forces
reload of some of the daemons affected by crypto policies in the system.
Setting <code>false</code> prevents this behavior and is helpful if the
role is executed during system enrollment or some other follow-up tasks
is expected to do it later.</p>
<ul>
<li><code>crypto_policies_reboot_ok</code></li>
</ul>
<p>Crypto policies can not know all the custom applications using crypto
libraries that are affected by change of crypto policies so it is
recommended to reboot after changing crypto policies to make sure all of
the services and applications will read the new configuration files. By
default (<code>false</code>), if reboot is required, this role will set
<code>crypto_policies_reboot_required</code> variable as described below
and it is up to the user of the role to reboot the system afterwards,
for example after applying some other changes that might need reboot. If
there are no other tasks in the playbook that require reboot, you can
set this value to <code>true</code> and this role will handle the reboot
for you, when needed.</p>
<ul>
<li><code>crypto_policies_transactional_update_reboot_ok</code></li>
</ul>
<p>This variable is used to handle reboots required by transactional
updates. If a transactional update requires a reboot, the role will
proceed with the reboot if
<code>crypto_policies_transactional_update_reboot_ok</code> is set to
<code>true</code>. If set to <code>false</code>, the role will notify
the user that a reboot is required, allowing for custom handling of the
reboot requirement. If this variable is not set, the role will fail to
ensure the reboot requirement is not overlooked.</p>
<h2 id="variables-exported-by-the-role">Variables Exported by the
Role</h2>
<ul>
<li><code>crypto_policies_active</code></li>
</ul>
<p>This fact contains the currently active policy name in the format as
accepted by <code>crypto_policies_policy</code> variable above.</p>
<ul>
<li><code>crypto_policies_available_policies</code></li>
</ul>
<p>This is a list of all base policies available on the target system.
Custom policy files can be installed by copying the <code>.pol</code>
files into <code>/etc/crypto-policies/policies</code> directory (not
implemented in this role yet).</p>
<ul>
<li><code>crypto_policies_available_subpolicies</code></li>
</ul>
<p>This is a list of all subpolicies available on the target system.
Custom subpolicies can be installed by copying the <code>.pmod</code>
files into <code>/etc/crypto-policies/policies/modules</code> directory
(not implemented in this role yet).</p>
<ul>
<li><code>crypto_policies_available_modules</code></li>
</ul>
<p>Deprecated alias to
<code>crypto_policies_available_subpolicies</code>.</p>
<ul>
<li><code>crypto_policies_reboot_required</code></li>
</ul>
<p>Default <code>false</code> - if <code>true</code>, this means a
reboot is needed to apply the changes made by the role</p>
<h1 id="example-playbook">Example Playbook</h1>
<p>The following playbook configures the system to the default crypto
policy level without SHA1. The update is done without reboot (which is
recommended to do by the user afterwards).</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="kw">-</span><span class="at"> </span><span class="fu">name</span><span class="kw">:</span><span class="at"> Manage crypto policies</span></span>
<span id="cb2-2"><a href="#cb2-2" aria-hidden="true" tabindex="-1"></a><span class="at"> </span><span class="fu">hosts</span><span class="kw">:</span><span class="at"> all</span></span>
<span id="cb2-3"><a href="#cb2-3" aria-hidden="true" tabindex="-1"></a><span class="at"> </span><span class="fu">roles</span><span class="kw">:</span></span>
<span id="cb2-4"><a href="#cb2-4" aria-hidden="true" tabindex="-1"></a><span class="at"> </span><span class="kw">-</span><span class="at"> </span><span class="fu">role</span><span class="kw">:</span><span class="at"> linux-system-roles.crypto_policies</span></span>
<span id="cb2-5"><a href="#cb2-5" aria-hidden="true" tabindex="-1"></a><span class="at"> </span><span class="fu">vars</span><span class="kw">:</span></span>
<span id="cb2-6"><a href="#cb2-6" aria-hidden="true" tabindex="-1"></a><span class="at"> </span><span class="fu">crypto_policies_policy</span><span class="kw">:</span><span class="at"> </span><span class="st">"DEFAULT:NO-SHA1"</span></span>
<span id="cb2-7"><a href="#cb2-7" aria-hidden="true" tabindex="-1"></a><span class="at"> </span><span class="fu">crypto_policies_reload</span><span class="kw">:</span><span class="at"> </span><span class="ch">false</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, see the file LICENSE for more information.</p>
<h1 id="author-information">Author Information</h1>
<p>Jakub Jelen, 2020</p>
</article>
</body>
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