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authorCraig Jennings <c@cjennings.net>2024-04-07 13:41:34 -0500
committerCraig Jennings <c@cjennings.net>2024-04-07 13:41:34 -0500
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+<h1>Add nodes to the swarm</h1>
+
+<p>Once you’ve <a href="../create-swarm/index">created a swarm</a> with a manager node, you’re ready to add worker nodes.</p> <ol> <li> <p>Open a terminal and ssh into the machine where you want to run a worker node. This tutorial uses the name <code class="language-plaintext highlighter-rouge">worker1</code>.</p> </li> <li> <p>Run the command produced by the <code class="language-plaintext highlighter-rouge">docker swarm init</code> output from the <a href="../create-swarm/index">Create a swarm</a> tutorial step to create a worker node joined to the existing swarm:</p> <div class="highlight"><pre class="highlight" data-language="">$ docker swarm join \
+ --token SWMTKN-1-49nj1cmql0jkz5s954yi3oex3nedyz0fb0xx14ie39trti4wxv-8vxv8rssmk743ojnwacrr2e7c \
+ 192.168.99.100:2377
+
+This node joined a swarm as a worker.
+</pre></div> <p>If you don’t have the command available, you can run the following command on a manager node to retrieve the join command for a worker:</p> <div class="highlight"><pre class="highlight" data-language="">$ docker swarm join-token worker
+
+To add a worker to this swarm, run the following command:
+
+ docker swarm join \
+ --token SWMTKN-1-49nj1cmql0jkz5s954yi3oex3nedyz0fb0xx14ie39trti4wxv-8vxv8rssmk743ojnwacrr2e7c \
+ 192.168.99.100:2377
+</pre></div> </li> <li> <p>Open a terminal and ssh into the machine where you want to run a second worker node. This tutorial uses the name <code class="language-plaintext highlighter-rouge">worker2</code>.</p> </li> <li> <p>Run the command produced by the <code class="language-plaintext highlighter-rouge">docker swarm init</code> output from the <a href="../create-swarm/index">Create a swarm</a> tutorial step to create a second worker node joined to the existing swarm:</p> <div class="highlight"><pre class="highlight" data-language="">$ docker swarm join \
+ --token SWMTKN-1-49nj1cmql0jkz5s954yi3oex3nedyz0fb0xx14ie39trti4wxv-8vxv8rssmk743ojnwacrr2e7c \
+ 192.168.99.100:2377
+
+This node joined a swarm as a worker.
+</pre></div> </li> <li> <p>Open a terminal and ssh into the machine where the manager node runs and run the <code class="language-plaintext highlighter-rouge">docker node ls</code> command to see the worker nodes:</p> <div class="highlight"><pre class="highlight" data-language="">$ docker node ls
+ID HOSTNAME STATUS AVAILABILITY MANAGER STATUS
+03g1y59jwfg7cf99w4lt0f662 worker2 Ready Active
+9j68exjopxe7wfl6yuxml7a7j worker1 Ready Active
+dxn1zf6l61qsb1josjja83ngz * manager1 Ready Active Leader
+</pre></div> <p>The <code class="language-plaintext highlighter-rouge">MANAGER</code> column identifies the manager nodes in the swarm. The empty status in this column for <code class="language-plaintext highlighter-rouge">worker1</code> and <code class="language-plaintext highlighter-rouge">worker2</code> identifies them as worker nodes.</p> <p>Swarm management commands like <code class="language-plaintext highlighter-rouge">docker node ls</code> only work on manager nodes.</p> </li> </ol> <h2 id="whats-next">What’s next?</h2> <p>Now your swarm consists of a manager and two worker nodes. In the next step of the tutorial, you <a href="../deploy-service/index">deploy a service</a> to the swarm.</p>
+<p><a href="https://docs.docker.com/search/?q=tutorial">tutorial</a>, <a href="https://docs.docker.com/search/?q=cluster%20management">cluster management</a>, <a href="https://docs.docker.com/search/?q=swarm">swarm</a></p>
+<div class="_attribution">
+ <p class="_attribution-p">
+ &copy; 2019 Docker, Inc.<br>Licensed under the Apache License, Version 2.0.<br>Docker and the Docker logo are trademarks or registered trademarks of Docker, Inc. in the United States and/or other countries.<br>Docker, Inc. and other parties may also have trademark rights in other terms used herein.<br>
+ <a href="https://docs.docker.com/engine/swarm/swarm-tutorial/add-nodes/" class="_attribution-link">https://docs.docker.com/engine/swarm/swarm-tutorial/add-nodes/</a>
+ </p>
+</div>