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<div role="main">
<div class="section" id="reverse-dns">
<h1>Reverse DNS<a class="headerlink" href="#reverse-dns" title="Permalink to this headline">¶</a></h1>
<div class="section" id="get-ptr-record">
<h2>Get PTR record<a class="headerlink" href="#get-ptr-record" title="Permalink to this headline">¶</a></h2>
<p>PTR records refer to a parent device: either a Cloud Server or a Cloud
Load Balancer with a public virtual IP address. You must supply a fully
formed resource object in order to retrieve either one’s PTR record:</p>
<div class="code php highlight-python"><div class="highlight"><pre>/** @param $parent OpenCloud\DNS\Resource\HasPtrRecordsInterface */
$ptr = $service->ptrRecord(array(
'parent' => $parent
));
</pre></div>
</div>
<p>So, in the above example, the <tt class="docutils literal"><span class="pre">$parent</span></tt> object could be an instance of
<tt class="docutils literal"><span class="pre">OpenCloud\Compute\Resource\Server</span></tt> or
<tt class="docutils literal"><span class="pre">OpenCloud\LoadBalancer\Resource\LoadBalancer</span></tt> - because they both
implement <tt class="docutils literal"><span class="pre">OpenCloud\DNS\Resource\HadPtrRecordsInterface</span></tt>. Please
consult the <a class="reference external" href="../compute">server documentation</a> and <a class="reference external" href="../load-balancer">load
balancer documentation</a> for more
detailed usage instructions.</p>
</div>
<div class="section" id="list-ptr-records">
<h2>List PTR records<a class="headerlink" href="#list-ptr-records" title="Permalink to this headline">¶</a></h2>
<div class="code php highlight-python"><div class="highlight"><pre>/** @param $parent OpenCloud\DNS\Resource\HasPtrRecordsInterface */
$ptrRecords = $service->ptrRecordList($parent);
foreach ($ptrRecords as $ptrRecord) {
}
</pre></div>
</div>
</div>
<div class="section" id="add-ptr-record">
<h2>Add PTR record<a class="headerlink" href="#add-ptr-record" title="Permalink to this headline">¶</a></h2>
<div class="code php highlight-python"><div class="highlight"><pre>$parent = $computeService->server('foo-server-id');
$ptr = $dnsService->ptrRecord(array(
'parent' => $parent,
'ttl' => 3600,
'name' => 'example.com',
'type' => 'PTR',
'data' => '192.0.2.7'
));
$ptr->create();
</pre></div>
</div>
<p>Here is a table that explains the above attributes:</p>
<table border="1" class="docutils">
<colgroup>
<col width="10%" />
<col width="79%" />
<col width="11%" />
</colgroup>
<thead valign="bottom">
<tr class="row-odd"><th class="head">Name</th>
<th class="head">Description</th>
<th class="head">Required</th>
</tr>
</thead>
<tbody valign="top">
<tr class="row-even"><td>type</td>
<td>Specifies the record type as “PTR”.</td>
<td>Yes</td>
</tr>
<tr class="row-odd"><td>name</td>
<td>Specifies the name for the domain or subdomain. Must be a valid domain name.</td>
<td>Yes</td>
</tr>
<tr class="row-even"><td>data</td>
<td>The data field for PTR records must be a valid IPv4 or IPv6 IP address.</td>
<td>Yes</td>
</tr>
<tr class="row-odd"><td>ttl</td>
<td>If specified, must be greater than 300. Defaults to 3600 if no TTL is specified.</td>
<td>No</td>
</tr>
<tr class="row-even"><td>comment</td>
<td>If included, its length must be less than or equal to 160 characters.</td>
<td>No</td>
</tr>
</tbody>
</table>
</div>
<div class="section" id="modify-ptr-record">
<h2>Modify PTR record<a class="headerlink" href="#modify-ptr-record" title="Permalink to this headline">¶</a></h2>
<div class="code php highlight-python"><div class="highlight"><pre>$ptr->update(array(
'ttl' => $ptr->ttl * 2
));
</pre></div>
</div>
</div>
<div class="section" id="delete-ptr-record">
<h2>Delete PTR record<a class="headerlink" href="#delete-ptr-record" title="Permalink to this headline">¶</a></h2>
<div class="code php highlight-python"><div class="highlight"><pre>$ptr->delete();
</pre></div>
</div>
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