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<liclass="toctree-l1"><aclass="reference internal"href="docsite/guide_selfsigned.html">How to create self-signed certificates</a></li>
<liclass="toctree-l1"><aclass="reference internal"href="docsite/guide_ownca.html">How to create a small CA</a></li>
</ul>
<ulclass="current">
<liclass="toctree-l1"><aclass="reference internal"href="acme_account_module.html">community.crypto.acme_account module – Create, modify or delete ACME accounts</a></li>
<liclass="toctree-l1"><aclass="reference internal"href="acme_account_info_module.html">community.crypto.acme_account_info module – Retrieves information on ACME accounts</a></li>
<liclass="toctree-l1"><aclass="reference internal"href="acme_ari_info_module.html">community.crypto.acme_ari_info module – Retrieves ACME Renewal Information (ARI) for a certificate</a></li>
<liclass="toctree-l1"><aclass="reference internal"href="acme_certificate_module.html">community.crypto.acme_certificate module – Create SSL/TLS certificates with the ACME protocol</a></li>
<liclass="toctree-l1"><aclass="reference internal"href="acme_certificate_deactivate_authz_module.html">community.crypto.acme_certificate_deactivate_authz module – Deactivate all authz for an ACME v2 order</a></li>
<liclass="toctree-l1"><aclass="reference internal"href="acme_certificate_renewal_info_module.html">community.crypto.acme_certificate_renewal_info module – Determine whether a certificate should be renewed or not</a></li>
<liclass="toctree-l1"><aclass="reference internal"href="acme_certificate_revoke_module.html">community.crypto.acme_certificate_revoke module – Revoke certificates with the ACME protocol</a></li>
<liclass="toctree-l1"><aclass="reference internal"href="acme_challenge_cert_helper_module.html">community.crypto.acme_challenge_cert_helper module – Prepare certificates required for ACME challenges such as <codeclass="docutils literal notranslate"><spanclass="pre">tls-alpn-01</span></code></a></li>
<liclass="toctree-l1"><aclass="reference internal"href="acme_inspect_module.html">community.crypto.acme_inspect module – Send direct requests to an ACME server</a></li>
<liclass="toctree-l1"><aclass="reference internal"href="certificate_complete_chain_module.html">community.crypto.certificate_complete_chain module – Complete certificate chain given a set of untrusted and root certificates</a></li>
<liclass="toctree-l1"><aclass="reference internal"href="ecs_certificate_module.html">community.crypto.ecs_certificate module – Request SSL/TLS certificates with the Entrust Certificate Services (ECS) API</a></li>
<liclass="toctree-l1"><aclass="reference internal"href="ecs_domain_module.html">community.crypto.ecs_domain module – Request validation of a domain with the Entrust Certificate Services (ECS) API</a></li>
<liclass="toctree-l1"><aclass="reference internal"href="get_certificate_module.html">community.crypto.get_certificate module – Get a certificate from a host:port</a></li>
<liclass="toctree-l1"><aclass="reference internal"href="gpg_keypair_module.html">community.crypto.gpg_keypair module – Generate or delete GPG private and public keys</a></li>
<liclass="toctree-l1"><aclass="reference internal"href="openssh_cert_module.html">community.crypto.openssh_cert module – Generate OpenSSH host or user certificates.</a></li>
<liclass="toctree-l1"><aclass="reference internal"href="openssh_keypair_module.html">community.crypto.openssh_keypair module – Generate OpenSSH private and public keys</a></li>
<liclass="toctree-l1"><aclass="reference internal"href="openssl_csr_info_module.html">community.crypto.openssl_csr_info module – Provide information of OpenSSL Certificate Signing Requests (CSR)</a></li>
<liclass="toctree-l1"><aclass="reference internal"href="openssl_privatekey_info_module.html">community.crypto.openssl_privatekey_info module – Provide information for OpenSSL private keys</a></li>
<liclass="toctree-l1"><aclass="reference internal"href="openssl_privatekey_pipe_module.html">community.crypto.openssl_privatekey_pipe module – Generate OpenSSL private keys without disk access</a></li>
<liclass="toctree-l1"><aclass="reference internal"href="openssl_publickey_module.html">community.crypto.openssl_publickey module – Generate an OpenSSL public key from its private key.</a></li>
<liclass="toctree-l1"><aclass="reference internal"href="openssl_publickey_info_module.html">community.crypto.openssl_publickey_info module – Provide information for OpenSSL public keys</a></li>
<liclass="toctree-l1"><aclass="reference internal"href="openssl_signature_module.html">community.crypto.openssl_signature module – Sign data with openssl</a></li>
<liclass="toctree-l1"><aclass="reference internal"href="openssl_signature_info_module.html">community.crypto.openssl_signature_info module – Verify signatures with openssl</a></li>
<liclass="toctree-l1"><aclass="reference internal"href="x509_certificate_info_module.html">community.crypto.x509_certificate_info module – Provide information of OpenSSL X.509 certificates</a></li>
<liclass="toctree-l1"><aclass="reference internal"href="x509_crl_info_module.html">community.crypto.x509_crl_info module – Retrieve information on Certificate Revocation Lists (CRLs)</a></li>
</ul>
<ul>
<liclass="toctree-l1"><aclass="reference internal"href="gpg_fingerprint_filter.html">community.crypto.gpg_fingerprint filter – Retrieve a GPG fingerprint from a GPG public or private key</a></li>
<liclass="toctree-l1"><aclass="reference internal"href="openssl_csr_info_filter.html">community.crypto.openssl_csr_info filter – Retrieve information from OpenSSL Certificate Signing Requests (CSR)</a></li>
<liclass="toctree-l1"><aclass="reference internal"href="openssl_privatekey_info_filter.html">community.crypto.openssl_privatekey_info filter – Retrieve information from OpenSSL private keys</a></li>
<liclass="toctree-l1"><aclass="reference internal"href="openssl_publickey_info_filter.html">community.crypto.openssl_publickey_info filter – Retrieve information from OpenSSL public keys in PEM format</a></li>
<liclass="toctree-l1"><aclass="reference internal"href="parse_serial_filter.html">community.crypto.parse_serial filter – Convert a serial number as a colon-separated list of hex numbers to an integer</a></li>
<liclass="toctree-l1"><aclass="reference internal"href="to_serial_filter.html">community.crypto.to_serial filter – Convert an integer to a colon-separated list of hex numbers</a></li>
<liclass="toctree-l1"><aclass="reference internal"href="x509_certificate_info_filter.html">community.crypto.x509_certificate_info filter – Retrieve information from X.509 certificates in PEM format</a></li>
<liclass="toctree-l1"><aclass="reference internal"href="x509_crl_info_filter.html">community.crypto.x509_crl_info filter – Retrieve information from X.509 CRLs in PEM format</a></li>
</ul>
<ul>
<liclass="toctree-l1"><aclass="reference internal"href="gpg_fingerprint_lookup.html">community.crypto.gpg_fingerprint lookup – Retrieve a GPG fingerprint from a GPG public or private key file</a></li>
</ul>
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<h1>community.crypto.openssl_dhparam module – Generate OpenSSL Diffie-Hellman Parameters<aclass="headerlink"href="#community-crypto-openssl-dhparam-module-generate-openssl-diffie-hellman-parameters"title="Link to this heading"></a></h1>
<divclass="admonition note">
<pclass="admonition-title">Note</p>
<p>This module is part of the <aclass="reference external"href="https://galaxy.ansible.com/ui/repo/published/community/crypto/">community.crypto collection</a> (version 2.20.0).</p>
<p>It is not included in <codeclass="docutils literal notranslate"><spanclass="pre">ansible-core</span></code>.
To check whether it is installed, run <codeclass="code docutils literal notranslate"><spanclass="pre">ansible-galaxy</span><spanclass="pre">collection</span><spanclass="pre">list</span></code>.</p>
You need further requirements to be able to use this module,
see <aclass="reference internal"href="#ansible-collections-community-crypto-openssl-dhparam-module-requirements"><spanclass="std std-ref">Requirements</span></a> for details.</p>
<p>To use it in a playbook, specify: <codeclass="code docutils literal notranslate"><spanclass="pre">community.crypto.openssl_dhparam</span></code>.</p>
<h2><aclass="toc-backref"href="#id1"role="doc-backlink">Synopsis</a><aclass="headerlink"href="#synopsis"title="Link to this heading"></a></h2>
<ulclass="simple">
<li><p>This module allows one to (re)generate OpenSSL DH-params.</p></li>
<li><p>This module uses file common arguments to specify generated file permissions.</p></li>
<li><p>Please note that the module regenerates existing DH params if they do not match the module’s options. If you are concerned that this could overwrite your existing DH params, consider using the <codeclass="ansible-option docutils literal notranslate"><strong><aclass="reference internal"href="#ansible-collections-community-crypto-openssl-dhparam-module-parameter-backup"><spanclass="std std-ref"><spanclass="pre">backup</span></span></a></strong></code> option.</p></li>
<li><p>The module can use the cryptography Python library, or the <codeclass="docutils literal notranslate"><spanclass="pre">openssl</span></code> executable. By default, it tries to detect which one is available. This can be overridden with the <codeclass="ansible-option docutils literal notranslate"><strong><aclass="reference internal"href="#ansible-collections-community-crypto-openssl-dhparam-module-parameter-select-crypto-backend"><spanclass="std std-ref"><spanclass="pre">select_crypto_backend</span></span></a></strong></code> option.</p></li>
</ul>
</section>
<sectionid="requirements">
<spanid="ansible-collections-community-crypto-openssl-dhparam-module-requirements"></span><h2><aclass="toc-backref"href="#id2"role="doc-backlink">Requirements</a><aclass="headerlink"href="#requirements"title="Link to this heading"></a></h2>
<p>The below requirements are needed on the host that executes this module.</p>
<aclass="ansibleOptionLink"href="#parameter-attributes"title="Permalink to this option"></a><pclass="ansible-option-type-line"><spanclass="ansible-option-aliases">aliases: attr</span></p>
<td><divclass="ansible-option-cell"><p>The attributes the resulting filesystem object should have.</p>
<p>To get supported flags look at the man page for <em>chattr</em> on the target system.</p>
<p>This string should contain the attributes in the same order as the one displayed by <em>lsattr</em>.</p>
<p>The <codeclass="docutils literal notranslate"><spanclass="pre">=</span></code> operator is assumed as default, otherwise <codeclass="docutils literal notranslate"><spanclass="pre">+</span></code> or <codeclass="docutils literal notranslate"><spanclass="pre">-</span></code> operators need to be included in the string.</p>
<aclass="ansibleOptionLink"href="#parameter-backup"title="Permalink to this option"></a><pclass="ansible-option-type-line"><spanclass="ansible-option-type">boolean</span></p>
</div></td>
<td><divclass="ansible-option-cell"><p>Create a backup file including a timestamp so you can get the original DH params back if you overwrote them with new ones by accident.</p>
<aclass="ansibleOptionLink"href="#parameter-force"title="Permalink to this option"></a><pclass="ansible-option-type-line"><spanclass="ansible-option-type">boolean</span></p>
</div></td>
<td><divclass="ansible-option-cell"><p>Should the parameters be regenerated even it it already exists.</p>
<aclass="ansibleOptionLink"href="#parameter-group"title="Permalink to this option"></a><pclass="ansible-option-type-line"><spanclass="ansible-option-type">string</span></p>
</div></td>
<td><divclass="ansible-option-cell"><p>Name of the group that should own the filesystem object, as would be fed to <em>chown</em>.</p>
<p>When left unspecified, it uses the current group of the current user unless you are root, in which case it can preserve the previous ownership.</p>
<aclass="ansibleOptionLink"href="#parameter-mode"title="Permalink to this option"></a><pclass="ansible-option-type-line"><spanclass="ansible-option-type">any</span></p>
</div></td>
<td><divclass="ansible-option-cell"><p>The permissions the resulting filesystem object should have.</p>
<p>For those used to <em>/usr/bin/chmod</em> remember that modes are actually octal numbers. You must give Ansible enough information to parse them correctly. For consistent results, quote octal numbers (for example, <codeclass="docutils literal notranslate"><spanclass="pre">'644'</span></code> or <codeclass="docutils literal notranslate"><spanclass="pre">'1777'</span></code>) so Ansible receives a string and can do its own conversion from string into number. Adding a leading zero (for example, <codeclass="docutils literal notranslate"><spanclass="pre">0755</span></code>) works sometimes, but can fail in loops and some other circumstances.</p>
<p>Giving Ansible a number without following either of these rules will end up with a decimal number which will have unexpected results.</p>
<p>As of Ansible 1.8, the mode may be specified as a symbolic mode (for example, <codeclass="docutils literal notranslate"><spanclass="pre">u+rwx</span></code> or <codeclass="docutils literal notranslate"><spanclass="pre">u=rw,g=r,o=r</span></code>).</p>
<p>If <codeclass="docutils literal notranslate"><spanclass="pre">mode</span></code> is not specified and the destination filesystem object <strong>does not</strong> exist, the default <codeclass="docutils literal notranslate"><spanclass="pre">umask</span></code> on the system will be used when setting the mode for the newly created filesystem object.</p>
<p>If <codeclass="docutils literal notranslate"><spanclass="pre">mode</span></code> is not specified and the destination filesystem object <strong>does</strong> exist, the mode of the existing filesystem object will be used.</p>
<p>Specifying <codeclass="docutils literal notranslate"><spanclass="pre">mode</span></code> is the best way to ensure filesystem objects are created with the correct permissions. See CVE-2020-1736 for further details.</p>
<aclass="ansibleOptionLink"href="#parameter-owner"title="Permalink to this option"></a><pclass="ansible-option-type-line"><spanclass="ansible-option-type">string</span></p>
</div></td>
<td><divclass="ansible-option-cell"><p>Name of the user that should own the filesystem object, as would be fed to <em>chown</em>.</p>
<p>When left unspecified, it uses the current user unless you are root, in which case it can preserve the previous ownership.</p>
<p>Specifying a numeric username will be assumed to be a user ID and not a username. Avoid numeric usernames to avoid this confusion.</p>
<aclass="ansibleOptionLink"href="#parameter-path"title="Permalink to this option"></a><pclass="ansible-option-type-line"><spanclass="ansible-option-type">path</span> / <spanclass="ansible-option-required">required</span></p>
</div></td>
<td><divclass="ansible-option-cell"><p>Name of the file in which the generated parameters will be saved.</p>
<aclass="ansibleOptionLink"href="#parameter-return_content"title="Permalink to this option"></a><pclass="ansible-option-type-line"><spanclass="ansible-option-type">boolean</span></p>
<p><emclass="ansible-option-versionadded">added in community.crypto 1.0.0</em></p>
</div></td>
<td><divclass="ansible-option-cell"><p>If set to <codeclass="ansible-value docutils literal notranslate"><spanclass="pre">true</span></code>, will return the (current or generated) DH parameter’s content as <codeclass="ansible-return-value docutils literal notranslate"><aclass="reference internal"href="#ansible-collections-community-crypto-openssl-dhparam-module-return-dhparams"><spanclass="std std-ref"><spanclass="pre">dhparams</span></span></a></code>.</p>
<aclass="ansibleOptionLink"href="#parameter-select_crypto_backend"title="Permalink to this option"></a><pclass="ansible-option-type-line"><spanclass="ansible-option-type">string</span></p>
<p><emclass="ansible-option-versionadded">added in community.crypto 1.0.0</em></p>
</div></td>
<td><divclass="ansible-option-cell"><p>Determines which crypto backend to use.</p>
<p>The default choice is <codeclass="ansible-value docutils literal notranslate"><spanclass="pre">auto</span></code>, which tries to use <codeclass="docutils literal notranslate"><spanclass="pre">cryptography</span></code> if available, and falls back to <codeclass="docutils literal notranslate"><spanclass="pre">openssl</span></code>.</p>
<p>If set to <codeclass="ansible-value docutils literal notranslate"><spanclass="pre">openssl</span></code>, will try to use the OpenSSL <codeclass="docutils literal notranslate"><spanclass="pre">openssl</span></code> executable.</p>
<p>If set to <codeclass="ansible-value docutils literal notranslate"><spanclass="pre">cryptography</span></code>, will try to use the <aclass="reference external"href="https://cryptography.io/">cryptography</a> library.</p>
<aclass="ansibleOptionLink"href="#parameter-selevel"title="Permalink to this option"></a><pclass="ansible-option-type-line"><spanclass="ansible-option-type">string</span></p>
</div></td>
<td><divclass="ansible-option-cell"><p>The level part of the SELinux filesystem object context.</p>
<p>This is the MLS/MCS attribute, sometimes known as the <codeclass="docutils literal notranslate"><spanclass="pre">range</span></code>.</p>
<p>When set to <codeclass="docutils literal notranslate"><spanclass="pre">_default</span></code>, it will use the <codeclass="docutils literal notranslate"><spanclass="pre">level</span></code> portion of the policy if available.</p>
<aclass="ansibleOptionLink"href="#parameter-serole"title="Permalink to this option"></a><pclass="ansible-option-type-line"><spanclass="ansible-option-type">string</span></p>
</div></td>
<td><divclass="ansible-option-cell"><p>The role part of the SELinux filesystem object context.</p>
<p>When set to <codeclass="docutils literal notranslate"><spanclass="pre">_default</span></code>, it will use the <codeclass="docutils literal notranslate"><spanclass="pre">role</span></code> portion of the policy if available.</p>
<aclass="ansibleOptionLink"href="#parameter-setype"title="Permalink to this option"></a><pclass="ansible-option-type-line"><spanclass="ansible-option-type">string</span></p>
</div></td>
<td><divclass="ansible-option-cell"><p>The type part of the SELinux filesystem object context.</p>
<p>When set to <codeclass="docutils literal notranslate"><spanclass="pre">_default</span></code>, it will use the <codeclass="docutils literal notranslate"><spanclass="pre">type</span></code> portion of the policy if available.</p>
<aclass="ansibleOptionLink"href="#parameter-seuser"title="Permalink to this option"></a><pclass="ansible-option-type-line"><spanclass="ansible-option-type">string</span></p>
</div></td>
<td><divclass="ansible-option-cell"><p>The user part of the SELinux filesystem object context.</p>
<p>By default it uses the <codeclass="docutils literal notranslate"><spanclass="pre">system</span></code> policy, where applicable.</p>
<p>When set to <codeclass="docutils literal notranslate"><spanclass="pre">_default</span></code>, it will use the <codeclass="docutils literal notranslate"><spanclass="pre">user</span></code> portion of the policy if available.</p>
<aclass="ansibleOptionLink"href="#parameter-size"title="Permalink to this option"></a><pclass="ansible-option-type-line"><spanclass="ansible-option-type">integer</span></p>
</div></td>
<td><divclass="ansible-option-cell"><p>Size (in bits) of the generated DH-params.</p>
<aclass="ansibleOptionLink"href="#parameter-state"title="Permalink to this option"></a><pclass="ansible-option-type-line"><spanclass="ansible-option-type">string</span></p>
</div></td>
<td><divclass="ansible-option-cell"><p>Whether the parameters should exist or not, taking action if the state is different from what is stated.</p>
<aclass="ansibleOptionLink"href="#parameter-unsafe_writes"title="Permalink to this option"></a><pclass="ansible-option-type-line"><spanclass="ansible-option-type">boolean</span></p>
</div></td>
<td><divclass="ansible-option-cell"><p>Influence when to use atomic operation to prevent data corruption or inconsistent reads from the target filesystem object.</p>
<p>By default this module uses atomic operations to prevent data corruption or inconsistent reads from the target filesystem objects, but sometimes systems are configured or just broken in ways that prevent this. One example is docker mounted filesystem objects, which cannot be updated atomically from inside the container and can only be written in an unsafe manner.</p>
<p>This option allows Ansible to fall back to unsafe methods of updating filesystem objects when atomic operations fail (however, it doesn’t force Ansible to perform unsafe writes).</p>
<p>IMPORTANT! Unsafe writes are subject to race conditions and can lead to data corruption.</p>
<td><divclass="ansible-option-cell"><p>Can run in <codeclass="docutils literal notranslate"><spanclass="pre">check_mode</span></code> and return changed status prediction without modifying target.</p>
<td><divclass="ansible-option-cell"><p>Will return details on what has changed (or possibly needs changing in <codeclass="docutils literal notranslate"><spanclass="pre">check_mode</span></code>), when in diff mode.</p>
<dt><aclass="reference internal"href="openssl_publickey_module.html#ansible-collections-community-crypto-openssl-publickey-module"><spanclass="std std-ref">community.crypto.openssl_publickey</span></a></dt><dd><p>Generate an OpenSSL public key from its private key.</p>
</dd>
</dl>
</div>
</section>
<sectionid="examples">
<h2><aclass="toc-backref"href="#id6"role="doc-backlink">Examples</a><aclass="headerlink"href="#examples"title="Link to this heading"></a></h2>
<divclass="highlight-yaml+jinja notranslate"><divclass="highlight"><pre><span></span><spanclass="p p-Indicator">-</span><spanclass="w"></span><spanclass="nt">name</span><spanclass="p">:</span><spanclass="w"></span><spanclass="l l-Scalar l-Scalar-Plain">Generate Diffie-Hellman parameters with the default size (4096 bits)</span>
<spanclass="p p-Indicator">-</span><spanclass="w"></span><spanclass="nt">name</span><spanclass="p">:</span><spanclass="w"></span><spanclass="l l-Scalar l-Scalar-Plain">Generate DH Parameters with a different size (2048 bits)</span>
<spanclass="p p-Indicator">-</span><spanclass="w"></span><spanclass="nt">name</span><spanclass="p">:</span><spanclass="w"></span><spanclass="l l-Scalar l-Scalar-Plain">Force regenerate an DH parameters if they already exist</span>
<h2><aclass="toc-backref"href="#id7"role="doc-backlink">Return Values</a><aclass="headerlink"href="#return-values"title="Link to this heading"></a></h2>
<p>Common return values are documented <aclass="reference external"href="https://docs.ansible.com/ansible/devel/reference_appendices/common_return_values.html#common-return-values"title="(in Ansible vdevel)"><spanclass="xref std std-ref">here</span></a>, the following are the fields unique to this module:</p>
<aclass="ansibleOptionLink"href="#return-backup_file"title="Permalink to this return value"></a><pclass="ansible-option-type-line"><spanclass="ansible-option-type">string</span></p>
</div></td>
<td><divclass="ansible-option-cell"><p>Name of backup file created.</p>
<pclass="ansible-option-line"><strongclass="ansible-option-returned-bold">Returned:</strong> changed and if <codeclass="ansible-option docutils literal notranslate"><strong><aclass="reference internal"href="#ansible-collections-community-crypto-openssl-dhparam-module-parameter-backup"><spanclass="std std-ref"><spanclass="pre">backup</span></span></a></strong></code> is <codeclass="ansible-value docutils literal notranslate"><spanclass="pre">true</span></code></p>
<aclass="ansibleOptionLink"href="#return-dhparams"title="Permalink to this return value"></a><pclass="ansible-option-type-line"><spanclass="ansible-option-type">string</span></p>
<p><emclass="ansible-option-versionadded">added in community.crypto 1.0.0</em></p>
</div></td>
<td><divclass="ansible-option-cell"><p>The (current or generated) DH params’ content.</p>
<pclass="ansible-option-line"><strongclass="ansible-option-returned-bold">Returned:</strong> if <codeclass="ansible-option docutils literal notranslate"><strong><aclass="reference internal"href="#ansible-collections-community-crypto-openssl-dhparam-module-parameter-state"><spanclass="std std-ref"><spanclass="pre">state</span></span></a></strong></code> is <codeclass="ansible-value docutils literal notranslate"><spanclass="pre">present</span></code> and <codeclass="ansible-option docutils literal notranslate"><strong><aclass="reference internal"href="#ansible-collections-community-crypto-openssl-dhparam-module-parameter-return-content"><spanclass="std std-ref"><spanclass="pre">return_content</span></span></a></strong></code> is <codeclass="ansible-value docutils literal notranslate"><spanclass="pre">true</span></code></p>
<aclass="ansibleOptionLink"href="#return-filename"title="Permalink to this return value"></a><pclass="ansible-option-type-line"><spanclass="ansible-option-type">string</span></p>
</div></td>
<td><divclass="ansible-option-cell"><p>Path to the generated Diffie-Hellman parameters.</p>
<pclass="ansible-option-line"><strongclass="ansible-option-returned-bold">Returned:</strong> changed or success</p>
<aclass="ansibleOptionLink"href="#return-size"title="Permalink to this return value"></a><pclass="ansible-option-type-line"><spanclass="ansible-option-type">integer</span></p>
</div></td>
<td><divclass="ansible-option-cell"><p>Size (in bits) of the Diffie-Hellman parameters.</p>
<pclass="ansible-option-line"><strongclass="ansible-option-returned-bold">Returned:</strong> changed or success</p>
