| For example, if you download the connector file <code>pulsar-io-aerospike-3.0.4.nar</code>:</p><div class="language-bash codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#F8F8F2;--prism-background-color:#282A36"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-bash codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#F8F8F2"><span class="token function" style="color:rgb(80, 250, 123)">mkdir</span><span class="token plain"> connectors</span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"></span><span class="token function" style="color:rgb(80, 250, 123)">mv</span><span class="token plain"> pulsar-io-aerospike-3.0.4.nar connectors</span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain" style="display:inline-block"></span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"></span><span class="token function" style="color:rgb(80, 250, 123)">ls</span><span class="token plain"> connectors</span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain">pulsar-io-aerospike-3.0.4.nar</span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"></span><span class="token punctuation" style="color:rgb(248, 248, 242)">..</span><span class="token plain">.</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><h2 class="anchor anchorWithStickyNavbar_LWe7" id="install-tiered-storage-offloaders-optional">Install Tiered Storage Offloaders (optional)<a href="#install-tiered-storage-offloaders-optional" class="hash-link" aria-label="Direct link to Install Tiered Storage Offloaders (optional)" title="Direct link to Install Tiered Storage Offloaders (optional)"></a></h2><p>To use tiered storage offloaders, you need to download the offloaders tarball release on every broker node in one of the following ways:</p><ul><li><p>by clicking the link below and downloading the release from an Apache mirror:</p><ul><li><a href="https://archive.apache.org/dist/pulsar/pulsar-3.0.4/apache-pulsar-offloaders-3.0.4-bin.tar.gz" target="_blank" rel="noopener noreferrer" download="">Pulsar Tiered Storage Offloaders 3.0.4 release</a></li></ul></li><li><p>from the Pulsar <a href="/download/">downloads page</a></p></li><li><p>from the Pulsar <a href="https://github.com/apache/pulsar/releases/latest" target="_blank" rel="noopener noreferrer">releases page</a></p></li><li><p>using <a href="https://www.gnu.org/software/wget" target="_blank" rel="noopener noreferrer">wget</a>:</p><div class="language-shell codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#F8F8F2;--prism-background-color:#282A36"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-shell codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#F8F8F2"><span class="token function" style="color:rgb(80, 250, 123)">wget</span><span class="token plain"> https://archive.apache.org/dist/pulsar/pulsar-3.0.4/apache-pulsar-offloaders-3.0.4-bin.tar.gz</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div></li></ul><p>Once you download the tarball, in the Pulsar directory, untar the offloaders package and copy the offloaders as <code>offloaders</code> in the Pulsar directory:</p><div class="language-bash codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#F8F8F2;--prism-background-color:#282A36"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-bash codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#F8F8F2"><span class="token function" style="color:rgb(80, 250, 123)">tar</span><span class="token plain"> xvfz apache-pulsar-offloaders-3.0.4-bin.tar.gz</span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain" style="display:inline-block"></span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"></span><span class="token comment" style="color:rgb(98, 114, 164)"># you can find a directory named `apache-pulsar-offloaders-3.0.4` in the pulsar directory</span><span class="token plain"></span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"></span><span class="token comment" style="color:rgb(98, 114, 164)"># then copy the offloaders</span><span class="token plain"></span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain" style="display:inline-block"></span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"></span><span class="token function" style="color:rgb(80, 250, 123)">mv</span><span class="token plain"> apache-pulsar-offloaders-3.0.4/offloaders offloaders</span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain" style="display:inline-block"></span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"></span><span class="token function" style="color:rgb(80, 250, 123)">ls</span><span class="token plain"> offloaders</span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain">tiered-storage-jcloud-3.0.4.nar</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><p>For more details of how to configure tiered storage feature, you can refer to the <a href="/docs/3.0.x/cookbooks-tiered-storage/">Tiered storage cookbook</a></p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="deploy-a-zookeeper-cluster">Deploy a ZooKeeper cluster<a href="#deploy-a-zookeeper-cluster" class="hash-link" aria-label="Direct link to Deploy a ZooKeeper cluster" title="Direct link to Deploy a ZooKeeper cluster"></a></h2><div class="theme-admonition theme-admonition-note alert alert--secondary admonition_LlT9"><div class="admonitionHeading_tbUL"><span class="admonitionIcon_kALy"><svg viewBox="0 0 14 16"><path fill-rule="evenodd" d="M6.3 5.69a.942.942 0 0 1-.28-.7c0-.28.09-.52.28-.7.19-.18.42-.28.7-.28.28 0 .52.09.7.28.18.19.28.42.28.7 0 .28-.09.52-.28.7a1 1 0 0 1-.7.3c-.28 0-.52-.11-.7-.3zM8 7.99c-.02-.25-.11-.48-.31-.69-.2-.19-.42-.3-.69-.31H6c-.27.02-.48.13-.69.31-.2.2-.3.44-.31.69h1v3c.02.27.11.5.31.69.2.2.42.31.69.31h1c.27 0 .48-.11.69-.31.2-.19.3-.42.31-.69H8V7.98v.01zM7 2.3c-3.14 0-5.7 2.54-5.7 5.68 0 3.14 2.56 5.7 5.7 5.7s5.7-2.55 5.7-5.7c0-3.15-2.56-5.69-5.7-5.69v.01zM7 .98c3.86 0 7 3.14 7 7s-3.14 7-7 7-7-3.12-7-7 3.14-7 7-7z"></path></svg></span>note</div><div class="admonitionContent_S0QG"><p>If you already have an existing zookeeper cluster and want to use it, you can skip this section.</p></div></div><p><a href="https://zookeeper.apache.org" target="_blank" rel="noopener noreferrer">ZooKeeper</a> manages a variety of essential coordination-related and configuration-related tasks for Pulsar. To deploy a Pulsar cluster, you need to deploy ZooKeeper first. A 3-node ZooKeeper cluster is the recommended configuration. Pulsar does not make heavy use of ZooKeeper, so the lightweight machines or VMs should suffice for running ZooKeeper.</p><p>To begin, add all ZooKeeper servers to the configuration specified in <a href="/docs/3.0.x/reference-configuration/#zookeeper"><code>conf/zookeeper.conf</code></a> (in the Pulsar directory that you create <a href="#install-the-pulsar-binary-package">above</a>). The following is an example:</p><div class="language-properties codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#F8F8F2;--prism-background-color:#282A36"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-properties codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#F8F8F2"><span class="token key attr-name" style="color:rgb(241, 250, 140)">server.1</span><span class="token punctuation" style="color:rgb(248, 248, 242)">=</span><span class="token value attr-value">zk1.us-west.example.com:2888:3888</span><span class="token plain"></span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"></span><span class="token key attr-name" style="color:rgb(241, 250, 140)">server.2</span><span class="token punctuation" style="color:rgb(248, 248, 242)">=</span><span class="token value attr-value">zk2.us-west.example.com:2888:3888</span><span class="token plain"></span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"></span><span class="token key attr-name" style="color:rgb(241, 250, 140)">server.3</span><span class="token punctuation" style="color:rgb(248, 248, 242)">=</span><span class="token value attr-value">zk3.us-west.example.com:2888:3888</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><blockquote><p>If you only have one machine on which to deploy Pulsar, you only need to add one server entry in the configuration file.</p></blockquote><blockquote><p>If your machines are behind NAT use 0.0.0.0 as server entry for the local address. If the node use external IP in configuration for itself, behind NAT, zookeper service won't start because it tries to put a listener on an external ip that the linux box doesn't own. Using 0.0.0.0 start a listener on ALL ip, so that NAT network traffic can reach it.</p></blockquote><p>Example of configuration on <em>server.3</em></p><div class="language-properties codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#F8F8F2;--prism-background-color:#282A36"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-properties codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#F8F8F2"><span class="token key attr-name" style="color:rgb(241, 250, 140)">server.1</span><span class="token punctuation" style="color:rgb(248, 248, 242)">=</span><span class="token value attr-value">zk1.us-west.example.com:2888:3888</span><span class="token plain"></span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"></span><span class="token key attr-name" style="color:rgb(241, 250, 140)">server.2</span><span class="token punctuation" style="color:rgb(248, 248, 242)">=</span><span class="token value attr-value">zk2.us-west.example.com:2888:3888</span><span class="token plain"></span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"></span><span class="token key attr-name" style="color:rgb(241, 250, 140)">server.3</span><span class="token punctuation" style="color:rgb(248, 248, 242)">=</span><span class="token value attr-value">0.0.0.0:2888:3888</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><p>On each host, you need to specify the ID of the node in the <code>myid</code> file, which is in the <code>data/zookeeper</code> folder of each server by default (you can change the file location via the <a href="/docs/3.0.x/reference-configuration/#zookeeper-dataDir"><code>dataDir</code></a> parameter).</p><blockquote><p>See the <a href="https://zookeeper.apache.org/doc/r3.4.10/zookeeperAdmin.html#sc_zkMulitServerSetup" target="_blank" rel="noopener noreferrer">Multi-server setup guide</a> in the ZooKeeper documentation for detailed information on <code>myid</code> and more.</p></blockquote><p>For example, on a ZooKeeper server like <code>zk1.us-west.example.com</code>, you can set the <code>myid</code> value as follows:</p><div class="language-bash codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#F8F8F2;--prism-background-color:#282A36"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-bash codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#F8F8F2"><span class="token function" style="color:rgb(80, 250, 123)">mkdir</span><span class="token plain"> -p data/zookeeper</span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"></span><span class="token builtin class-name" style="color:rgb(189, 147, 249)">echo</span><span class="token plain"> </span><span class="token number">1</span><span class="token plain"> </span><span class="token operator">></span><span class="token plain"> data/zookeeper/myid</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><p>On <code>zk2.us-west.example.com</code>, the command is <code>echo 2 > data/zookeeper/myid</code> and so on.</p><p>Once you add each server to the <code>zookeeper.conf</code> configuration and have the appropriate <code>myid</code> entry, you can start ZooKeeper on all hosts (in the background, using nohup) with the <a href="/docs/3.0.x/reference-cli-tools/"><code>pulsar-daemon</code></a> CLI tool:</p><div class="language-bash codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#F8F8F2;--prism-background-color:#282A36"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-bash codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#F8F8F2"><span class="token plain">bin/pulsar-daemon start zookeeper</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><blockquote><p>If you plan to deploy Zookeeper with the Bookie on the same node, you need to start zookeeper by using different stats |
| port by configuring the <code>metricsProvider.httpPort</code> in zookeeper.conf.</p></blockquote><h2 class="anchor anchorWithStickyNavbar_LWe7" id="initialize-cluster-metadata">Initialize cluster metadata<a href="#initialize-cluster-metadata" class="hash-link" aria-label="Direct link to Initialize cluster metadata" title="Direct link to Initialize cluster metadata"></a></h2><div class="theme-admonition theme-admonition-note alert alert--secondary admonition_LlT9"><div class="admonitionHeading_tbUL"><span class="admonitionIcon_kALy"><svg viewBox="0 0 14 16"><path fill-rule="evenodd" d="M6.3 5.69a.942.942 0 0 1-.28-.7c0-.28.09-.52.28-.7.19-.18.42-.28.7-.28.28 0 .52.09.7.28.18.19.28.42.28.7 0 .28-.09.52-.28.7a1 1 0 0 1-.7.3c-.28 0-.52-.11-.7-.3zM8 7.99c-.02-.25-.11-.48-.31-.69-.2-.19-.42-.3-.69-.31H6c-.27.02-.48.13-.69.31-.2.2-.3.44-.31.69h1v3c.02.27.11.5.31.69.2.2.42.31.69.31h1c.27 0 .48-.11.69-.31.2-.19.3-.42.31-.69H8V7.98v.01zM7 2.3c-3.14 0-5.7 2.54-5.7 5.68 0 3.14 2.56 5.7 5.7 5.7s5.7-2.55 5.7-5.7c0-3.15-2.56-5.69-5.7-5.69v.01zM7 .98c3.86 0 7 3.14 7 7s-3.14 7-7 7-7-3.12-7-7 3.14-7 7-7z"></path></svg></span>note</div><div class="admonitionContent_S0QG"><p>When provisioning a new cluster, you need to initialize the cluster metadata on the metadata store (e.g., ZooKeeper). You need to initialize it <strong>only once</strong>.</p></div></div><p>You can initialize this metadata using the <a href="/docs/3.0.x/reference-cli-tools/"><code>initialize-cluster-metadata</code></a> command of the <a href="/docs/3.0.x/reference-cli-tools/"><code>pulsar</code></a> CLI tool. This command can be run on any machine in your Pulsar cluster, so the metadata can be initialized from a ZooKeeper, broker, or bookie machine. The following is an example:</p><div class="language-shell codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#F8F8F2;--prism-background-color:#282A36"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-shell codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#F8F8F2"><span class="token plain">bin/pulsar initialize-cluster-metadata </span><span class="token punctuation" style="color:rgb(248, 248, 242)">\</span><span class="token plain"></span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> --cluster pulsar-cluster-1 </span><span class="token punctuation" style="color:rgb(248, 248, 242)">\</span><span class="token plain"></span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> --metadata-store zk:zk1.us-west.example.com:2181,zk2.us-west.example.com:2181 </span><span class="token punctuation" style="color:rgb(248, 248, 242)">\</span><span class="token plain"></span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> --configuration-metadata-store zk:zk1.us-west.example.com:2181,zk2.us-west.example.com:2181 </span><span class="token punctuation" style="color:rgb(248, 248, 242)">\</span><span class="token plain"></span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> --web-service-url http://pulsar.us-west.example.com:8080 </span><span class="token punctuation" style="color:rgb(248, 248, 242)">\</span><span class="token plain"></span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> --web-service-url-tls https://pulsar.us-west.example.com:8443 </span><span class="token punctuation" style="color:rgb(248, 248, 242)">\</span><span class="token plain"></span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> --broker-service-url pulsar://pulsar.us-west.example.com:6650 </span><span class="token punctuation" style="color:rgb(248, 248, 242)">\</span><span class="token plain"></span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> --broker-service-url-tls pulsar+ssl://pulsar.us-west.example.com:6651</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><p>As you can see from the example above, you will need to specify the following configurations. Items with * are <strong>required</strong> flags.</p><table><thead><tr><th align="left">Flag</th><th align="left">Description</th></tr></thead><tbody><tr><td align="left"><code>--cluster</code>*</td><td align="left">A name for the cluster</td></tr><tr><td align="left"><code>--metadata-store</code>*</td><td align="left">A "local" metadata store connection string for the cluster. This connection string only needs to include <em>one</em> machine in the ZooKeeper cluster.</td></tr><tr><td align="left"><code>--configuration-metadata-store</code>*</td><td align="left">The configuration metadata store connection string for the entire instance. As with the <code>--metadata-store</code> flag, this connection string only needs to include <em>one</em> machine in the ZooKeeper cluster.</td></tr><tr><td align="left"><code>--web-service-url</code>*</td><td align="left">The web service URL for the cluster, plus a port. This URL should be a standard DNS name. The default port is 8080 (you had better not use a different port).</td></tr><tr><td align="left"><code>--web-service-url-tls</code></td><td align="left">If you use <a href="/docs/3.0.x/security-tls-transport/">TLS</a>, you also need to specify a TLS web service URL for the cluster. The default port is 8443 (you had better not use a different port).</td></tr><tr><td align="left"><code>--broker-service-url</code>*</td><td align="left">A broker service URL enabling interaction with the brokers in the cluster. This URL should not use the same DNS name as the web service URL but should use the <code>pulsar</code> scheme instead. The default port is 6650 (you had better not use a different port).</td></tr><tr><td align="left"><code>--broker-service-url-tls</code></td><td align="left">If you use <a href="/docs/3.0.x/security-tls-transport/">TLS</a>, you also need to specify a TLS web service URL for the cluster as well as a TLS broker service URL for the brokers in the cluster. The default port is 6651 (you had better not use a different port).</td></tr></tbody></table><div class="theme-admonition theme-admonition-note alert alert--secondary admonition_LlT9"><div class="admonitionHeading_tbUL"><span class="admonitionIcon_kALy"><svg viewBox="0 0 14 16"><path fill-rule="evenodd" d="M6.3 5.69a.942.942 0 0 1-.28-.7c0-.28.09-.52.28-.7.19-.18.42-.28.7-.28.28 0 .52.09.7.28.18.19.28.42.28.7 0 .28-.09.52-.28.7a1 1 0 0 1-.7.3c-.28 0-.52-.11-.7-.3zM8 7.99c-.02-.25-.11-.48-.31-.69-.2-.19-.42-.3-.69-.31H6c-.27.02-.48.13-.69.31-.2.2-.3.44-.31.69h1v3c.02.27.11.5.31.69.2.2.42.31.69.31h1c.27 0 .48-.11.69-.31.2-.19.3-.42.31-.69H8V7.98v.01zM7 2.3c-3.14 0-5.7 2.54-5.7 5.68 0 3.14 2.56 5.7 5.7 5.7s5.7-2.55 5.7-5.7c0-3.15-2.56-5.69-5.7-5.69v.01zM7 .98c3.86 0 7 3.14 7 7s-3.14 7-7 7-7-3.12-7-7 3.14-7 7-7z"></path></svg></span>note</div><div class="admonitionContent_S0QG"><p>If you do not have a DNS server, you can use multi-host format in the service URL with the following settings:</p><div class="language-shell codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#F8F8F2;--prism-background-color:#282A36"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-shell codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#F8F8F2"><span class="token plain">--web-service-url http://host1:8080,host2:8080,host3:8080 </span><span class="token punctuation" style="color:rgb(248, 248, 242)">\</span><span class="token plain"></span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain">--web-service-url-tls https://host1:8443,host2:8443,host3:8443 </span><span class="token punctuation" style="color:rgb(248, 248, 242)">\</span><span class="token plain"></span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain">--broker-service-url pulsar://host1:6650,host2:6650,host3:6650 </span><span class="token punctuation" style="color:rgb(248, 248, 242)">\</span><span class="token plain"></span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain">--broker-service-url-tls pulsar+ssl://host1:6651,host2:6651,host3:6651</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><p>If you want to use an existing BookKeeper cluster, you can add the <code>--existing-bk-metadata-service-uri</code> flag as follows:</p><div class="language-shell codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#F8F8F2;--prism-background-color:#282A36"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-shell codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#F8F8F2"><span class="token plain">--existing-bk-metadata-service-uri </span><span class="token string" style="color:rgb(255, 121, 198)">"zk+null://zk1:2181;zk2:2181/ledgers"</span><span class="token plain"> </span><span class="token punctuation" style="color:rgb(248, 248, 242)">\</span><span class="token plain"></span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain">--web-service-url http://host1:8080,host2:8080,host3:8080 </span><span class="token punctuation" style="color:rgb(248, 248, 242)">\</span><span class="token plain"></span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain">--web-service-url-tls https://host1:8443,host2:8443,host3:8443 </span><span class="token punctuation" style="color:rgb(248, 248, 242)">\</span><span class="token plain"></span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain">--broker-service-url pulsar://host1:6650,host2:6650,host3:6650 </span><span class="token punctuation" style="color:rgb(248, 248, 242)">\</span><span class="token plain"></span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain">--broker-service-url-tls pulsar+ssl://host1:6651,host2:6651,host3:6651</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><p>You can obtain the metadata service URI of the existing BookKeeper cluster by using the <code>bin/bookkeeper shell whatisinstanceid</code> command. You must enclose the value in double quotes since the multiple metadata service URIs are separated with semicolons.</p></div></div><h2 class="anchor anchorWithStickyNavbar_LWe7" id="deploy-a-bookkeeper-cluster">Deploy a BookKeeper cluster<a href="#deploy-a-bookkeeper-cluster" class="hash-link" aria-label="Direct link to Deploy a BookKeeper cluster" title="Direct link to Deploy a BookKeeper cluster"></a></h2><p><a href="https://bookkeeper.apache.org" target="_blank" rel="noopener noreferrer">BookKeeper</a> handles all persistent data storage in Pulsar. You need to deploy a cluster of BookKeeper bookies to use Pulsar. You can choose to run a <strong>3-bookie BookKeeper cluster</strong>.</p><p>You can configure BookKeeper bookies using the <a href="/docs/3.0.x/reference-configuration/#bookkeeper"><code>conf/bookkeeper.conf</code></a> configuration file. The most important step in configuring bookies for our purposes here is ensuring that <code>metadataServiceUri</code> is set to the URI for the ZooKeeper cluster. The following is an example:</p><div class="language-properties codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#F8F8F2;--prism-background-color:#282A36"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-properties codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#F8F8F2"><span class="token key attr-name" style="color:rgb(241, 250, 140)">metadataServiceUri</span><span class="token punctuation" style="color:rgb(248, 248, 242)">=</span><span class="token value attr-value">zk://zk1.us-west.example.com:2181/ledgers</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><p>Once you appropriately modify the <code>metadataServiceUri</code> parameter, you can make any other configuration changes that you require. You can find a full listing of the available BookKeeper configuration parameters <a href="/docs/3.0.x/reference-configuration/#bookkeeper">here</a>. However, consulting the <a href="https://bookkeeper.apache.org/docs/next/reference/config/" target="_blank" rel="noopener noreferrer">BookKeeper documentation</a> for a more in-depth guide might be a better choice.</p><p>Once you apply the desired configuration in <code>conf/bookkeeper.conf</code>, you can start up a bookie on each of your BookKeeper hosts. You can start up each bookie either in the background, using <a href="https://en.wikipedia.org/wiki/Nohup" target="_blank" rel="noopener noreferrer">nohup</a>, or in the foreground.</p><p>To start the bookie in the background, use the <a href="/docs/3.0.x/reference-cli-tools/"><code>pulsar-daemon</code></a> CLI tool:</p><div class="language-bash codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#F8F8F2;--prism-background-color:#282A36"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-bash codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#F8F8F2"><span class="token plain">bin/pulsar-daemon start bookie</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><p>To start the bookie in the foreground:</p><div class="language-bash codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#F8F8F2;--prism-background-color:#282A36"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-bash codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#F8F8F2"><span class="token plain">bin/pulsar bookie</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><p>You can verify that a bookie works properly by running the <code>bookiesanity</code> command on the <a href="/docs/3.0.x/reference-cli-tools/">BookKeeper shell</a>:</p><div class="language-bash codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#F8F8F2;--prism-background-color:#282A36"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-bash codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#F8F8F2"><span class="token plain">bin/bookkeeper shell bookiesanity</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><p>This command creates an ephemeral BookKeeper ledger on the local bookie, writes a few entries, reads them back, and finally deletes the ledger.</p><p>After you start all the bookies, you can use <code>simpletest</code> command for <a href="/docs/3.0.x/reference-cli-tools/">BookKeeper shell</a> on any bookie node, to verify all the bookies in the cluster are up running.</p><div class="language-bash codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#F8F8F2;--prism-background-color:#282A36"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-bash codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#F8F8F2"><span class="token plain">bin/bookkeeper shell simpletest --ensemble </span><span class="token operator"><</span><span class="token plain">num-bookies</span><span class="token operator">></span><span class="token plain"> --writeQuorum </span><span class="token operator"><</span><span class="token plain">num-bookies</span><span class="token operator">></span><span class="token plain"> --ackQuorum </span><span class="token operator"><</span><span class="token plain">num-bookies</span><span class="token operator">></span><span class="token plain"> --numEntries </span><span class="token operator"><</span><span class="token plain">num-entries</span><span class="token operator">></span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><p>This command creates a <code>num-bookies</code> sized ledger on the cluster, writes a few entries, and finally deletes the ledger.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="deploy-pulsar-brokers">Deploy Pulsar brokers<a href="#deploy-pulsar-brokers" class="hash-link" aria-label="Direct link to Deploy Pulsar brokers" title="Direct link to Deploy Pulsar brokers"></a></h2><p>Pulsar brokers are the last thing you need to deploy in your Pulsar cluster. Brokers handle Pulsar messages and provide the administrative interface of Pulsar. A good choice is to run <strong>3 brokers</strong>, one for each machine that already runs a BookKeeper bookie.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="configure-brokers">Configure Brokers<a href="#configure-brokers" class="hash-link" aria-label="Direct link to Configure Brokers" title="Direct link to Configure Brokers"></a></h3><p>You can configure brokers using the <code>conf/broker.conf</code> configuration file. The most important element of broker configuration is ensuring that each broker is aware of the ZooKeeper cluster that you have deployed. Ensure that the <a href="/docs/3.0.x/reference-configuration/#broker"><code>metadataStoreUrl</code></a> and <a href="/docs/3.0.x/reference-configuration/#broker"><code>configurationMetadataStoreUrl</code></a> parameters are correct. In this case, since you only have 1 cluster and no configuration store setup, the <code>configurationMetadataStoreUrl</code> point to the same <code>metadataStoreUrl</code>.</p><div class="language-properties codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#F8F8F2;--prism-background-color:#282A36"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-properties codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#F8F8F2"><span class="token key attr-name" style="color:rgb(241, 250, 140)">metadataStoreUrl</span><span class="token punctuation" style="color:rgb(248, 248, 242)">=</span><span class="token value attr-value">zk:zk1.us-west.example.com:2181,zk2.us-west.example.com:2181,zk3.us-west.example.com:2181</span><span class="token plain"></span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"></span><span class="token key attr-name" style="color:rgb(241, 250, 140)">configurationMetadataStoreUrl</span><span class="token punctuation" style="color:rgb(248, 248, 242)">=</span><span class="token value attr-value">zk:zk1.us-west.example.com:2181,zk2.us-west.example.com:2181,zk3.us-west.example.com:2181</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><p>You also need to specify the cluster name (matching the name that you provided when you <a href="#initialize-cluster-metadata">initialize the metadata of the cluster</a>):</p><div class="language-properties codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#F8F8F2;--prism-background-color:#282A36"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-properties codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#F8F8F2"><span class="token key attr-name" style="color:rgb(241, 250, 140)">clusterName</span><span class="token punctuation" style="color:rgb(248, 248, 242)">=</span><span class="token value attr-value">pulsar-cluster-1</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><p>In addition, you need to match the broker and web service ports provided when you initialize the metadata of the cluster (especially when you use a different port than the default):</p><div class="language-properties codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#F8F8F2;--prism-background-color:#282A36"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-properties codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#F8F8F2"><span class="token key attr-name" style="color:rgb(241, 250, 140)">brokerServicePort</span><span class="token punctuation" style="color:rgb(248, 248, 242)">=</span><span class="token value attr-value">6650</span><span class="token plain"></span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"></span><span class="token key attr-name" style="color:rgb(241, 250, 140)">brokerServicePortTls</span><span class="token punctuation" style="color:rgb(248, 248, 242)">=</span><span class="token value attr-value">6651</span><span class="token plain"></span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"></span><span class="token key attr-name" style="color:rgb(241, 250, 140)">webServicePort</span><span class="token punctuation" style="color:rgb(248, 248, 242)">=</span><span class="token value attr-value">8080</span><span class="token plain"></span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"></span><span class="token key attr-name" style="color:rgb(241, 250, 140)">webServicePortTls</span><span class="token punctuation" style="color:rgb(248, 248, 242)">=</span><span class="token value attr-value">8443</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><blockquote><p>If you deploy Pulsar in a one-node cluster, you should update the replication settings in <code>conf/broker.conf</code> to <code>1</code>.</p><div class="language-properties codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#F8F8F2;--prism-background-color:#282A36"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-properties codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#F8F8F2"><span class="token comment" style="color:rgb(98, 114, 164)"># Number of bookies to use when creating a ledger</span><span class="token plain"></span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"></span><span class="token key attr-name" style="color:rgb(241, 250, 140)">managedLedgerDefaultEnsembleSize</span><span class="token punctuation" style="color:rgb(248, 248, 242)">=</span><span class="token value attr-value">1</span><span class="token plain"></span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain" style="display:inline-block"></span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"></span><span class="token comment" style="color:rgb(98, 114, 164)"># Number of copies to store for each message</span><span class="token plain"></span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"></span><span class="token key attr-name" style="color:rgb(241, 250, 140)">managedLedgerDefaultWriteQuorum</span><span class="token punctuation" style="color:rgb(248, 248, 242)">=</span><span class="token value attr-value">1</span><span class="token plain"></span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain" style="display:inline-block"></span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"></span><span class="token comment" style="color:rgb(98, 114, 164)"># Number of guaranteed copies (acks to wait before write is complete)</span><span class="token plain"></span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"></span><span class="token key attr-name" style="color:rgb(241, 250, 140)">managedLedgerDefaultAckQuorum</span><span class="token punctuation" style="color:rgb(248, 248, 242)">=</span><span class="token value attr-value">1</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div></blockquote><h3 class="anchor anchorWithStickyNavbar_LWe7" id="enable-pulsar-functions-optional">Enable Pulsar Functions (optional)<a href="#enable-pulsar-functions-optional" class="hash-link" aria-label="Direct link to Enable Pulsar Functions (optional)" title="Direct link to Enable Pulsar Functions (optional)"></a></h3><p>If you want to enable <a href="/docs/3.0.x/functions-overview/">Pulsar Functions</a>, you can follow the instructions as below:</p><ol><li><p>Edit <code>conf/broker.conf</code> to enable functions worker, by setting <code>functionsWorkerEnabled</code> to <code>true</code>.</p><div class="language-conf codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#F8F8F2;--prism-background-color:#282A36"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-conf codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#F8F8F2"><span class="token plain">functionsWorkerEnabled=true</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div></li><li><p>Edit <code>conf/functions_worker.yml</code> and set <code>pulsarFunctionsCluster</code> to the cluster name that you provide when you <a href="#initialize-cluster-metadata">initialize the metadata of the cluster</a>.</p><div class="language-conf codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#F8F8F2;--prism-background-color:#282A36"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-conf codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#F8F8F2"><span class="token plain">pulsarFunctionsCluster: pulsar-cluster-1</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div></li></ol><p>If you want to learn more options about deploying the functions worker, check out <a href="/docs/3.0.x/functions-worker/">Deploy and manage functions worker</a>.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="start-brokers">Start Brokers<a href="#start-brokers" class="hash-link" aria-label="Direct link to Start Brokers" title="Direct link to Start Brokers"></a></h3><p>You can then provide any other configuration changes that you want in the <a href="/docs/3.0.x/reference-configuration/#broker"><code>conf/broker.conf</code></a> file. Once you decide on a configuration, you can start up the brokers for your Pulsar cluster. Like ZooKeeper and BookKeeper, you can start brokers either in the foreground or in the background, using nohup.</p><p>You can start a broker in the foreground using the <a href="/docs/3.0.x/reference-cli-tools/"><code>pulsar broker</code></a> command:</p><div class="language-bash codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#F8F8F2;--prism-background-color:#282A36"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-bash codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#F8F8F2"><span class="token plain">bin/pulsar broker</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><p>You can start a broker in the background using the <a href="/docs/3.0.x/reference-cli-tools/"><code>pulsar-daemon</code></a> CLI tool:</p><div class="language-bash codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#F8F8F2;--prism-background-color:#282A36"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-bash codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#F8F8F2"><span class="token plain">bin/pulsar-daemon start broker</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><p>Once you successfully start up all the brokers that you intend to use, your Pulsar cluster should be ready to go!</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="connect-to-the-running-cluster">Connect to the running cluster<a href="#connect-to-the-running-cluster" class="hash-link" aria-label="Direct link to Connect to the running cluster" title="Direct link to Connect to the running cluster"></a></h2><p>Once your Pulsar cluster is up and running, you should be able to connect with it using Pulsar clients. One such client is the <a href="/docs/3.0.x/reference-cli-tools/"><code>pulsar-client</code></a> tool, which is included with the Pulsar binary package. The <code>pulsar-client</code> tool can publish messages to and consume messages from Pulsar topics and thus provide a simple way to make sure that your cluster runs properly.</p><p>To use the <code>pulsar-client</code> tool, first modify the client configuration file in <a href="/docs/3.0.x/reference-configuration/#client"><code>conf/client.conf</code></a> in your binary package. You need to change the values for <code>webServiceUrl</code> and <code>brokerServiceUrl</code>, substituting <code>localhost</code> (which is the default), with the DNS name that you assign to your broker/bookie hosts. The following is an example:</p><div class="language-properties codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#F8F8F2;--prism-background-color:#282A36"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-properties codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#F8F8F2"><span class="token key attr-name" style="color:rgb(241, 250, 140)">webServiceUrl</span><span class="token punctuation" style="color:rgb(248, 248, 242)">=</span><span class="token value attr-value">http://us-west.example.com:8080</span><span class="token plain"></span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"></span><span class="token key attr-name" style="color:rgb(241, 250, 140)">brokerServiceurl</span><span class="token punctuation" style="color:rgb(248, 248, 242)">=</span><span class="token value attr-value">pulsar://us-west.example.com:6650</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><div class="theme-admonition theme-admonition-note alert alert--secondary admonition_LlT9"><div class="admonitionHeading_tbUL"><span class="admonitionIcon_kALy"><svg viewBox="0 0 14 16"><path fill-rule="evenodd" d="M6.3 5.69a.942.942 0 0 1-.28-.7c0-.28.09-.52.28-.7.19-.18.42-.28.7-.28.28 0 .52.09.7.28.18.19.28.42.28.7 0 .28-.09.52-.28.7a1 1 0 0 1-.7.3c-.28 0-.52-.11-.7-.3zM8 7.99c-.02-.25-.11-.48-.31-.69-.2-.19-.42-.3-.69-.31H6c-.27.02-.48.13-.69.31-.2.2-.3.44-.31.69h1v3c.02.27.11.5.31.69.2.2.42.31.69.31h1c.27 0 .48-.11.69-.31.2-.19.3-.42.31-.69H8V7.98v.01zM7 2.3c-3.14 0-5.7 2.54-5.7 5.68 0 3.14 2.56 5.7 5.7 5.7s5.7-2.55 5.7-5.7c0-3.15-2.56-5.69-5.7-5.69v.01zM7 .98c3.86 0 7 3.14 7 7s-3.14 7-7 7-7-3.12-7-7 3.14-7 7-7z"></path></svg></span>note</div><div class="admonitionContent_S0QG"><p>If you do not have a DNS server, you can specify multi-host in service URL as follows:</p><div class="language-properties codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#F8F8F2;--prism-background-color:#282A36"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-properties codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#F8F8F2"><span class="token key attr-name" style="color:rgb(241, 250, 140)">webServiceUrl</span><span class="token punctuation" style="color:rgb(248, 248, 242)">=</span><span class="token value attr-value">http://host1:8080,host2:8080,host3:8080</span><span class="token plain"></span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"></span><span class="token key attr-name" style="color:rgb(241, 250, 140)">brokerServiceurl</span><span class="token punctuation" style="color:rgb(248, 248, 242)">=</span><span class="token value attr-value">pulsar://host1:6650,host2:6650,host3:6650</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div></div></div><p>Once that is complete, you can publish a message to the Pulsar topic:</p><div class="language-bash codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#F8F8F2;--prism-background-color:#282A36"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-bash codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#F8F8F2"><span class="token plain">bin/pulsar-client produce </span><span class="token punctuation" style="color:rgb(248, 248, 242)">\</span><span class="token plain"></span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> persistent://public/default/test </span><span class="token punctuation" style="color:rgb(248, 248, 242)">\</span><span class="token plain"></span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> -n </span><span class="token number">1</span><span class="token plain"> </span><span class="token punctuation" style="color:rgb(248, 248, 242)">\</span><span class="token plain"></span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> -m </span><span class="token string" style="color:rgb(255, 121, 198)">"Hello Pulsar"</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><p>This command publishes a single message to the Pulsar topic. In addition, you can subscribe to the Pulsar topic in a different terminal before publishing messages as below:</p><div class="language-bash codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#F8F8F2;--prism-background-color:#282A36"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-bash codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#F8F8F2"><span class="token plain">bin/pulsar-client consume </span><span class="token punctuation" style="color:rgb(248, 248, 242)">\</span><span class="token plain"></span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> persistent://public/default/test </span><span class="token punctuation" style="color:rgb(248, 248, 242)">\</span><span class="token plain"></span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> -n </span><span class="token number">100</span><span class="token plain"> </span><span class="token punctuation" style="color:rgb(248, 248, 242)">\</span><span class="token plain"></span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> -s </span><span class="token string" style="color:rgb(255, 121, 198)">"consumer-test"</span><span class="token plain"> </span><span class="token punctuation" style="color:rgb(248, 248, 242)">\</span><span class="token plain"></span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> -t </span><span class="token string" style="color:rgb(255, 121, 198)">"Exclusive"</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><p>Once you successfully publish the above message to the topic, you should see it in the standard output:</p><div class="codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#F8F8F2;--prism-background-color:#282A36"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-text codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#F8F8F2"><span class="token plain">----- got message -----</span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain">key:[null], properties:[], content:Hello Pulsar</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><h2 class="anchor anchorWithStickyNavbar_LWe7" id="run-functions">Run Functions<a href="#run-functions" class="hash-link" aria-label="Direct link to Run Functions" title="Direct link to Run Functions"></a></h2><blockquote><p>If you have <a href="#enable-pulsar-functions-optional">enabled</a> Pulsar Functions, you can try out the Pulsar Functions now.</p></blockquote><p>Create an ExclamationFunction <code>exclamation</code>.</p><div class="language-bash codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#F8F8F2;--prism-background-color:#282A36"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-bash codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#F8F8F2"><span class="token plain">bin/pulsar-admin functions create </span><span class="token punctuation" style="color:rgb(248, 248, 242)">\</span><span class="token plain"></span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> --jar </span><span class="token environment constant" style="color:rgb(189, 147, 249)">$PWD</span><span class="token plain">/examples/api-examples.jar </span><span class="token punctuation" style="color:rgb(248, 248, 242)">\</span><span class="token plain"></span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> --classname org.apache.pulsar.functions.api.examples.ExclamationFunction </span><span class="token punctuation" style="color:rgb(248, 248, 242)">\</span><span class="token plain"></span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> --inputs persistent://public/default/exclamation-input </span><span class="token punctuation" style="color:rgb(248, 248, 242)">\</span><span class="token plain"></span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> --output persistent://public/default/exclamation-output </span><span class="token punctuation" style="color:rgb(248, 248, 242)">\</span><span class="token plain"></span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> --tenant public </span><span class="token punctuation" style="color:rgb(248, 248, 242)">\</span><span class="token plain"></span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> --namespace default </span><span class="token punctuation" style="color:rgb(248, 248, 242)">\</span><span class="token plain"></span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> --name exclamation</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><p>Check whether the function runs as expected by <a href="/docs/3.0.x/functions-deploy-trigger/">triggering</a> the function.</p><div class="language-bash codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#F8F8F2;--prism-background-color:#282A36"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-bash codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#F8F8F2"><span class="token plain">bin/pulsar-admin functions trigger --name exclamation --trigger-value </span><span class="token string" style="color:rgb(255, 121, 198)">"hello world"</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><p>You should see the following output:</p><div class="language-shell codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#F8F8F2;--prism-background-color:#282A36"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-shell codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#F8F8F2"><span class="token plain">hello world</span><span class="token operator">!</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div></div><footer class="theme-doc-footer docusaurus-mt-lg"><div 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