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<!DOCTYPE html>
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<title>Cluster rippled Servers - XAG Ledger Dev Portal</title>
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<h4>In this document</h4>
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<ul class="card-body">
<li class="level-1"><a href="#cluster-rippled-servers">Cluster rippled Servers</a></li>
<li class="level-2"><a href="#see-also">See Also</a></li>
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<h1 id="cluster-rippled-servers">Cluster rippled Servers</h1>
<p>If you run multiple <a href="the-rippled-server.html"><code>rippled</code> servers</a> in the same data center, you can configure them in a <a href="clustering.html">cluster</a> to maximize efficiency. To configure clustering:</p>
<ol>
<li>
<p>For each of your servers, note the IP address of the server.</p>
</li>
<li>
<p>For each of your servers, generate a unique seed using the <a href="validation_create.html">validation_create method</a>.</p>
<p>For example, using the commandline interface:</p>
<pre><code>$ rippled validation_create
Loading: "/etc/rippled.cfg"
Connecting to 127.0.0.1:5005
{
"result" : {
"status" : "success",
"validation_key" : "FAWN JAVA JADE HEAL VARY HER REEL SHAW GAIL ARCH BEN IRMA",
"validation_public_key" : "n9Mxf6qD4J55XeLSCEpqaePW4GjoCR5U1ZeGZGJUCNe3bQa4yQbG",
"validation_seed" : "ssZkdwURFMBXenJPbrpE14b6noJSu"
}
}
</code></pre>
<p>Save the <code>validation_seed</code> and <code>validation_public_key</code> parameters from each response somewhere secure.</p>
</li>
<li>
<p>On each server, edit the <a class="external-link" href="https://github.com/ripple/rippled/blob/master/cfg/rippled-example.cfg" target="_blank">config file <i aria-hidden="true" class="fa fa-external-link"></i></a>, modifying the following sections:</p>
<ol>
<li>
<p>In the <code>[ips_fixed]</code> section, list the IP address and port of each <em>other</em> member of the cluster. For each of those servers, the port number should match the <code>protocol = peer</code> port (usually 51235) from that server's <code>rippled.cfg</code>. For example:</p>
<pre><code>[ips_fixed]
192.168.0.1 51235
192.168.0.2 51235
</code></pre>
<p>This defines specific peer servers to which this server should always attempt to maintain a direct peer-to-peer connection.</p>
</li>
<li>
<p>In the <code>[node_seed]</code> section, set the server's node seed to one of the <code>validation_seed</code> values you generated using the <a href="validation_create.html">validation_create method</a> in step 2. Each server must use a unique node seed. For example:</p>
<pre><code>[node_seed]
ssZkdwURFMBXenJPbrpE14b6noJSu
</code></pre>
<p>This defines the key pair the server uses to sign peer-to-peer communications, excluding validation messages.</p>
</li>
<li>
<p>In the <code>[cluster_nodes]</code> section, set the members of the server's cluster, identified by their <code>validation_public_key</code> values. Each server should list the public keys of all <em>other</em> members of the cluster here. Optionally, add a custom name for each server. For example:</p>
<pre><code>[cluster_nodes]
n9McNsnzzXQPbg96PEUrrQ6z3wrvgtU4M7c97tncMpSoDzaQvPar keynes
n94UE1ukbq6pfZY9j54sv2A1UrEeHZXLbns3xK5CzU9NbNREytaa friedman
</code></pre>
<p>This defines the key pairs the server uses to recognize members of its cluster.</p>
</li>
</ol>
</li>
<li>
<p>After saving the config file, restart <code>rippled</code> on each server.</p>
<pre><code># systemctl restart rippled
</code></pre>
</li>
<li>
<p>To confirm that each server is now a member of the cluster, use the <a href="peers.html">peers method</a>. The <code>cluster</code> field should list the public keys and (if configured) the custom names for each server.</p>
<p>For example, using the commandline interface:</p>
<pre><code>$ rippled peers
Loading: "/etc/rippled.cfg"
Connecting to 127.0.0.1:5005
{
"result" : {
"cluster" : {
"n9McNsnzzXQPbg96PEUrrQ6z3wrvgtU4M7c97tncMpSoDzaQvPar": {
"tag": "keynes",
"age": 1
},
"n94UE1ukbq6pfZY9j54sv2A1UrEeHZXLbns3xK5CzU9NbNREytaa": {
"tag": "friedman",
"age": 1
}
},
"peers" : [
... (omitted) ...
],
"status" : "success"
}
}
</code></pre>
</li>
</ol>
<h2 id="see-also">See Also</h2>
<ul>
<li><strong>Concepts:</strong><ul>
<li><a href="peer-protocol.html">Peer Protocol</a></li>
</ul>
</li>
<li><strong>Tutorials:</strong><ul>
<li><a href="install-rippled.html">Install rippled</a></li>
</ul>
</li>
<li><strong>References:</strong><ul>
<li><a href="validation_create.html">validation_create method</a></li>
<li><a href="peers.html">peers method</a></li>
</ul>
</li>
</ul>
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