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<article class="post-10126 post type-post status-publish format-standard category-control-panels category-cpanel-control-panels-tutorials category-tutorials tag-cpanel tag-dns tag-dns-cluster tag-whm entry" itemscope itemtype="https://schema.org/CreativeWork"><header class="entry-header"><h1 class="entry-title" itemprop="headline">Set up DNS Clustering for cPanel servers</h1>
<p class="entry-meta"><time class="entry-time" itemprop="datePublished" datetime="2013-03-06T13:00:58+05:30">March 6, 2013</time> By <span class="entry-author" itemprop="author" itemscope itemtype="https://schema.org/Person"><a href="https://acpaneltech.com/author/admin/" class="entry-author-link" itemprop="url" rel="author"><span class="entry-author-name" itemprop="name">admin</span></a></span> <span class="entry-comments-link"><a href="https://acpaneltech.com/set-up-dns-clustering-for-cpanel-servers/#respond">Leave a Comment</a></span> </p></header><div class="entry-content" itemprop="text">
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<p>DNS Clustering for cpanel servers can be realized with a set of DNS servers that share and synchronize DNS zone files. Having a name server cluster will help your domain to be online even if one of your DNS servers goes down. The standard is to have them separately in two different continents, if possible.</p>
<p><span id="more-10126"></span></p>
<h3>Requirement</h3>
<p>At least two cPanel servers with DNS running, preferably bi<span style="color: #000000;">nd. It must have DNS port ( 53 ) opened and accepting connection from the second member of the cluster. </span></p>
<h3>Enabling DNS Clustering on Each Server</h3>
<p>First, you will need to enable DNS clustering via each server&#8217;s WHM interface:</p>
<ol>
<li>Navigate to WHM’s <em>Configure Cluster</em> screen.</li>
<li>Select <em>Enable DNS Clustering</em>.</li>
<li>Click <em>Change</em>.</li>
<li>Click <em>Return to Cluster Status</em>.</li>
</ol>
<p>Now Clustering is enabled and you will be presented with a new configuration section called <em>Global Cluster options</em>.</p>
<h3>Global Cluster Options</h3>
<p>This section decides when to drop a server from the cluster if it is not responding to commands and how many commands if not responded must be considered as a server down.</p>
<p>You can keep this the default and can enable notification when a server is dropped from cluster.</p>
<h3>Setting Up The Cluster</h3>
<p>On your web server&#8217;s WHM interface:</p>
<ol>
<li>Navigate to the <em>Configure Cluster</em> screen.</li>
<li>Add a new server to the cluster box</li>
<li>Select the server type from the drop-down menu.</li>
<li>Click <em>Configure</em>. WHM will display the <em>cPanel DNS Remote Configuration</em> screen.</li>
<li>Next to <em>Remote cPanel &amp; WHM DNS service</em>, type the hostname or IP address of the nameserver you wish to link to.</li>
<li>Next to <em>Remote server username</em>, type the WHM username for the nameserver.</li>
<li>Under <em>Remote server access hash</em>, enter the nameserver&#8217;s remote access key.</li>
</ol>
<div>You can generate and retrieve a key using the nameserver&#8217;s WHM interface. Log into WHM on the nameserver, and navigate to <em>Manage SSH Keys</em>. Once the key appears, cut and paste it into the <em>Remote server access hash</em> box</div>
<h3>Specifying the Web Server&#8217;s DNS Role</h3>
<p><span style="color: #000000;">Select <em>Synchronize</em> and submit.<span> Having the members synchronised means it will sync to the changes made in other server. I&#8217;d prefer this option normally unless you need to have the server not to do so.  In that case, you have the option &#8220;Stand Alone&#8221;</span></span><span style="color: #000000;"> </span></p>
<h3>Conclusion</h3>
<p>You will need to redo the same process in the second server too, so that both of them will be in sync.  This is a very basic set up and you can have multiple nameservers, and layers of DNS clusters, by adding this cluster as a slave to another, and so forth, depending how large your DNS servers must be.</p>
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