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@@ -1504,6 +1504,32 @@
</li>
<li class="chapter " data-level="5.3.5" data-path="../nats_tools/nsc/revocation.html">
<a href="../nats_tools/nsc/revocation.html">
Revocation
</a>
</li>
<li class="chapter " data-level="5.3.6" data-path="../nats_tools/nsc/managed.html">
<a href="../nats_tools/nsc/managed.html">
Managed Operators
</a>
</li>
@@ -2593,26 +2619,26 @@
</code></pre>
<p>In this case, <code>nats-cluster-node-1</code> is seeding the rest of the cluster through the autodiscovery feature. Now NATS servers <code>nats-cluster-node-1</code> and <code>nats-cluster-node-2</code> are clustered together.</p>
<p>Add in more replicas of the subscriber:</p>
<pre class="language-"><code class="lang-sh">% docker <span class="token function">service</span> scale ruby-nats<span class="token operator">=</span>3
<pre class="language-"><code class="lang-sh">% docker <span class="token function">service</span> scale ruby-nats<span class="token operator">=</span><span class="token number">3</span>
</code></pre>
<p>Then confirm the distribution on the Docker Swarm cluster:</p>
<pre class="language-"><code class="lang-sh">% docker <span class="token function">service</span> <span class="token function">ps</span> ruby-nats
ID NAME IMAGE NODE DESIRED STATE CURRENT STATE ERROR
25skxso8honyhuznu15e4989m ruby-nats.1 wallyqs/ruby-nats:ruby-2.3.1-nats-v0.8.0 node-1 Running Running 2 minutes ago
0017lut0u3wj153yvp0uxr8yo ruby-nats.2 wallyqs/ruby-nats:ruby-2.3.1-nats-v0.8.0 node-1 Running Running 2 minutes ago
2sxl8rw6vm99x622efbdmkb96 ruby-nats.3 wallyqs/ruby-nats:ruby-2.3.1-nats-v0.8.0 node-2 Running Running 2 minutes ago
25skxso8honyhuznu15e4989m ruby-nats.1 wallyqs/ruby-nats:ruby-2.3.1-nats-v0.8.0 node-1 Running Running <span class="token number">2</span> minutes ago
0017lut0u3wj153yvp0uxr8yo ruby-nats.2 wallyqs/ruby-nats:ruby-2.3.1-nats-v0.8.0 node-1 Running Running <span class="token number">2</span> minutes ago
2sxl8rw6vm99x622efbdmkb96 ruby-nats.3 wallyqs/ruby-nats:ruby-2.3.1-nats-v0.8.0 node-2 Running Running <span class="token number">2</span> minutes ago
</code></pre>
<p>The sample output after adding more NATS server nodes to the cluster, is below - and notice that the client is <em>dynamically</em> aware of more nodes being part of the cluster via auto discovery!</p>
<pre class="language-"><code class="lang-sh"><span class="token punctuation">[</span>2016-08-15 12:51:52 +0000<span class="token punctuation">]</span> Saying hi <span class="token punctuation">(</span>servers <span class="token keyword">in</span> pool: <span class="token punctuation">[</span><span class="token punctuation">{</span>:uri<span class="token operator">=</span><span class="token operator">&gt;</span><span class="token comment">#&lt;URI::Generic nats://10.0.1.3:4222&gt;, :was_connected=&gt;true, :reconnect_attempts=&gt;0}]</span>
<span class="token punctuation">[</span>2016-08-15 12:51:53 +0000<span class="token punctuation">]</span> Saying hi <span class="token punctuation">(</span>servers <span class="token keyword">in</span> pool: <span class="token punctuation">[</span><span class="token punctuation">{</span>:uri<span class="token operator">=</span><span class="token operator">&gt;</span><span class="token comment">#&lt;URI::Generic nats://10.0.1.3:4222&gt;, :was_connected=&gt;true, :reconnect_attempts=&gt;0}]</span>
<span class="token punctuation">[</span>2016-08-15 12:51:54 +0000<span class="token punctuation">]</span> Saying hi <span class="token punctuation">(</span>servers <span class="token keyword">in</span> pool: <span class="token punctuation">[</span><span class="token punctuation">{</span>:uri<span class="token operator">=</span><span class="token operator">&gt;</span><span class="token comment">#&lt;URI::Generic nats://10.0.1.3:4222&gt;, :was_connected=&gt;true, :reconnect_attempts=&gt;0}]</span>
<span class="token punctuation">[</span>2016-08-15 12:51:55 +0000<span class="token punctuation">]</span> Saying hi <span class="token punctuation">(</span>servers <span class="token keyword">in</span> pool: <span class="token punctuation">[</span><span class="token punctuation">{</span>:uri<span class="token operator">=</span><span class="token operator">&gt;</span><span class="token comment">#&lt;URI::Generic nats://10.0.1.3:4222&gt;, :was_connected=&gt;true, :reconnect_attempts=&gt;0}, {:uri=&gt;#&lt;URI::Generic nats://10.0.1.7:4222&gt;, :reconnect_attempts=&gt;0}, {:uri=&gt;#&lt;URI::Generic nats://10.0.1.6:4222&gt;, :reconnect_attempts=&gt;0}]</span>
<pre class="language-"><code class="lang-sh"><span class="token punctuation">[</span><span class="token number">2016</span>-08-15 <span class="token number">12</span>:51:52 +0000<span class="token punctuation">]</span> Saying hi <span class="token punctuation">(</span>servers <span class="token keyword">in</span> pool: <span class="token punctuation">[</span><span class="token punctuation">{</span>:uri<span class="token operator">=</span><span class="token operator">&gt;</span><span class="token comment">#&lt;URI::Generic nats://10.0.1.3:4222&gt;, :was_connected=&gt;true, :reconnect_attempts=&gt;0}]</span>
<span class="token punctuation">[</span><span class="token number">2016</span>-08-15 <span class="token number">12</span>:51:53 +0000<span class="token punctuation">]</span> Saying hi <span class="token punctuation">(</span>servers <span class="token keyword">in</span> pool: <span class="token punctuation">[</span><span class="token punctuation">{</span>:uri<span class="token operator">=</span><span class="token operator">&gt;</span><span class="token comment">#&lt;URI::Generic nats://10.0.1.3:4222&gt;, :was_connected=&gt;true, :reconnect_attempts=&gt;0}]</span>
<span class="token punctuation">[</span><span class="token number">2016</span>-08-15 <span class="token number">12</span>:51:54 +0000<span class="token punctuation">]</span> Saying hi <span class="token punctuation">(</span>servers <span class="token keyword">in</span> pool: <span class="token punctuation">[</span><span class="token punctuation">{</span>:uri<span class="token operator">=</span><span class="token operator">&gt;</span><span class="token comment">#&lt;URI::Generic nats://10.0.1.3:4222&gt;, :was_connected=&gt;true, :reconnect_attempts=&gt;0}]</span>
<span class="token punctuation">[</span><span class="token number">2016</span>-08-15 <span class="token number">12</span>:51:55 +0000<span class="token punctuation">]</span> Saying hi <span class="token punctuation">(</span>servers <span class="token keyword">in</span> pool: <span class="token punctuation">[</span><span class="token punctuation">{</span>:uri<span class="token operator">=</span><span class="token operator">&gt;</span><span class="token comment">#&lt;URI::Generic nats://10.0.1.3:4222&gt;, :was_connected=&gt;true, :reconnect_attempts=&gt;0}, {:uri=&gt;#&lt;URI::Generic nats://10.0.1.7:4222&gt;, :reconnect_attempts=&gt;0}, {:uri=&gt;#&lt;URI::Generic nats://10.0.1.6:4222&gt;, :reconnect_attempts=&gt;0}]</span>
</code></pre>
<p>Sample output after adding more workers which can reply back (since ignoring own responses):</p>
<pre class="language-"><code class="lang-sh"><span class="token punctuation">[</span>2016-08-15 16:06:26 +0000<span class="token punctuation">]</span> Received reply - world
<span class="token punctuation">[</span>2016-08-15 16:06:26 +0000<span class="token punctuation">]</span> Received reply - world
<span class="token punctuation">[</span>2016-08-15 16:06:27 +0000<span class="token punctuation">]</span> Received greeting - hi - _INBOX.b8d8c01753d78e562e4dc561f1
<span class="token punctuation">[</span>2016-08-15 16:06:27 +0000<span class="token punctuation">]</span> Received greeting - hi - _INBOX.4c35d18701979f8c8ed7e5f6ea
<pre class="language-"><code class="lang-sh"><span class="token punctuation">[</span><span class="token number">2016</span>-08-15 <span class="token number">16</span>:06:26 +0000<span class="token punctuation">]</span> Received reply - world
<span class="token punctuation">[</span><span class="token number">2016</span>-08-15 <span class="token number">16</span>:06:26 +0000<span class="token punctuation">]</span> Received reply - world
<span class="token punctuation">[</span><span class="token number">2016</span>-08-15 <span class="token number">16</span>:06:27 +0000<span class="token punctuation">]</span> Received greeting - hi - _INBOX.b8d8c01753d78e562e4dc561f1
<span class="token punctuation">[</span><span class="token number">2016</span>-08-15 <span class="token number">16</span>:06:27 +0000<span class="token punctuation">]</span> Received greeting - hi - _INBOX.4c35d18701979f8c8ed7e5f6ea
</code></pre>
<h3 id="and-so-forth"><a name="and-so-forth" class="plugin-anchor" href="#and-so-forth"><i class="fa fa-link" aria-hidden="true"></i></a>And so forth...</h3>
<p>From here you can experiment adding to the NATS cluster by simply adding servers with new service names, that route to the seed server <code>nats-cluster-node-1</code>. As you&apos;ve seen above, clients will automatically be updated to know that new servers are available in the cluster.</p>
@@ -2661,7 +2687,7 @@ ID NAME IMAGE
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