<!DOCTYPE html><html lang="en"><head><meta charSet="utf-8"/><meta http-equiv="X-UA-Compatible" content="IE=edge"/><title>Managing Clusters · Apache Pulsar</title><meta name="viewport" content="width=device-width, initial-scale=1.0"/><meta name="generator" content="Docusaurus"/><meta name="description" content="&gt; **Important**"/><meta name="docsearch:version" content="2.9.1"/><meta name="docsearch:language" content="en"/><meta property="og:title" content="Managing Clusters · Apache Pulsar"/><meta property="og:type" content="website"/><meta property="og:url" content="https://pulsar.apache.org/"/><meta property="og:description" content="&gt; **Important**"/><meta name="twitter:card" content="summary"/><meta name="twitter:image" content="https://pulsar.apache.org/img/pulsar.svg"/><link rel="shortcut icon" href="/img/pulsar.ico"/><link rel="stylesheet" href="//cdnjs.cloudflare.com/ajax/libs/highlight.js/9.12.0/styles/atom-one-dark.min.css"/><link rel="alternate" type="application/atom+xml" href="https://pulsar.apache.org/blog/atom.xml" title="Apache Pulsar Blog ATOM Feed"/><link rel="alternate" type="application/rss+xml" href="https://pulsar.apache.org/blog/feed.xml" title="Apache Pulsar Blog RSS Feed"/><link rel="stylesheet" href="/css/code-blocks-buttons.css"/><script type="text/javascript" src="https://buttons.github.io/buttons.js"></script><script type="text/javascript" src="https://cdnjs.cloudflare.com/ajax/libs/clipboard.js/2.0.0/clipboard.min.js"></script><script type="text/javascript" src="/js/custom.js"></script><script src="/js/scrollSpy.js"></script><link rel="stylesheet" href="/css/main.css"/><script src="/js/codetabs.js"></script></head><body class="sideNavVisible separateOnPageNav"><div class="fixedHeaderContainer"><div class="headerWrapper wrapper"><header><a href="/en"><img class="logo" src="/img/pulsar.svg" alt="Apache Pulsar"/></a><a href="/en/versions"><h3>2.9.1</h3></a><div class="navigationWrapper navigationSlider"><nav class="slidingNav"><ul class="nav-site nav-site-internal"><li class="siteNavGroupActive"><a href="/docs/en/2.9.1/getting-started-standalone" target="_self">Docs</a></li><li class=""><a href="/en/download" target="_self">Download</a></li><li class="siteNavGroupActive"><a href="/docs/en/2.9.1/client-libraries" target="_self">Clients</a></li><li class=""><a href="#restapis" target="_self">REST APIs</a></li><li class=""><a href="#cli" target="_self">Cli</a></li><li class=""><a href="/blog/" target="_self">Blog</a></li><li class=""><a href="#community" target="_self">Community</a></li><li class=""><a href="#apache" target="_self">Apache</a></li><li class=""><a href="https://pulsar-next.staged.apache.org/" target="_self">New Website (Beta)</a></li><span><li><a id="languages-menu" href="#"><img class="languages-icon" src="/img/language.svg" alt="Languages icon"/>English</a><div id="languages-dropdown" class="hide"><ul id="languages-dropdown-items"><li><a href="/docs/ja/2.9.1/admin-api-clusters">日本語</a></li><li><a href="/docs/fr/2.9.1/admin-api-clusters">Français</a></li><li><a href="/docs/ko/2.9.1/admin-api-clusters">한국어</a></li><li><a href="/docs/zh-CN/2.9.1/admin-api-clusters">中文</a></li><li><a href="/docs/zh-TW/2.9.1/admin-api-clusters">繁體中文</a></li><li><a href="https://crowdin.com/project/apache-pulsar" target="_blank" rel="noreferrer noopener">Help Translate</a></li></ul></div></li><script>
        const languagesMenuItem = document.getElementById("languages-menu");
        const languagesDropDown = document.getElementById("languages-dropdown");
        languagesMenuItem.addEventListener("click", function(event) {
          event.preventDefault();

          if (languagesDropDown.className == "hide") {
            languagesDropDown.className = "visible";
          } else {
            languagesDropDown.className = "hide";
          }
        });
      </script></span></ul></nav></div></header></div></div><div class="navPusher"><div class="docMainWrapper wrapper"><div class="docsNavContainer" id="docsNav"><nav class="toc"><div class="toggleNav"><section class="navWrapper wrapper"><div class="navBreadcrumb wrapper"><div class="navToggle" id="navToggler"><div class="hamburger-menu"><div class="line1"></div><div class="line2"></div><div class="line3"></div></div></div><h2><i>›</i><span>Admin API</span></h2><div class="tocToggler" id="tocToggler"><i class="icon-toc"></i></div></div><div class="navGroups"><div class="navGroup"><h3 class="navGroupCategoryTitle">Get Started</h3><ul class=""><li class="navListItem"><a class="navItem" href="/docs/en/2.9.1/getting-started-standalone">Run Pulsar locally</a></li><li class="navListItem"><a class="navItem" href="/docs/en/2.9.1/getting-started-docker">Run Pulsar in Docker</a></li><li class="navListItem"><a class="navItem" href="/docs/en/2.9.1/getting-started-helm">Run Pulsar in Kubernetes</a></li></ul></div><div class="navGroup"><h3 class="navGroupCategoryTitle">Concepts and Architecture</h3><ul class=""><li class="navListItem"><a class="navItem" href="/docs/en/2.9.1/concepts-overview">Overview</a></li><li class="navListItem"><a class="navItem" href="/docs/en/2.9.1/concepts-messaging">Messaging</a></li><li class="navListItem"><a class="navItem" href="/docs/en/2.9.1/concepts-architecture-overview">Architecture</a></li><li class="navListItem"><a class="navItem" href="/docs/en/2.9.1/concepts-clients">Clients</a></li><li class="navListItem"><a class="navItem" href="/docs/en/2.9.1/concepts-replication">Geo Replication</a></li><li class="navListItem"><a class="navItem" href="/docs/en/2.9.1/concepts-multi-tenancy">Multi Tenancy</a></li><li class="navListItem"><a class="navItem" href="/docs/en/2.9.1/concepts-authentication">Authentication and Authorization</a></li><li class="navListItem"><a class="navItem" href="/docs/en/2.9.1/concepts-topic-compaction">Topic Compaction</a></li><li class="navListItem"><a class="navItem" href="/docs/en/2.9.1/concepts-proxy-sni-routing">Proxy support with SNI routing</a></li><li class="navListItem"><a class="navItem" href="/docs/en/2.9.1/concepts-multiple-advertised-listeners">Multiple advertised listeners</a></li></ul></div><div class="navGroup"><h3 class="navGroupCategoryTitle">Pulsar Schema</h3><ul class=""><li class="navListItem"><a class="navItem" href="/docs/en/2.9.1/schema-get-started">Get started</a></li><li class="navListItem"><a class="navItem" href="/docs/en/2.9.1/schema-understand">Understand schema</a></li><li class="navListItem"><a class="navItem" href="/docs/en/2.9.1/schema-evolution-compatibility">Schema evolution and compatibility</a></li><li class="navListItem"><a class="navItem" href="/docs/en/2.9.1/schema-manage">Manage schema</a></li></ul></div><div class="navGroup"><h3 class="navGroupCategoryTitle">Pulsar Functions</h3><ul class=""><li class="navListItem"><a class="navItem" href="/docs/en/2.9.1/functions-overview">Overview</a></li><li class="navListItem"><a class="navItem" href="/docs/en/2.9.1/functions-runtime">Setup: Configure Functions runtime</a></li><li class="navListItem"><a class="navItem" href="/docs/en/2.9.1/functions-worker">Setup: Pulsar Functions Worker</a></li><li class="navListItem"><a class="navItem" href="/docs/en/2.9.1/functions-develop">How-to: Develop</a></li><li class="navListItem"><a class="navItem" href="/docs/en/2.9.1/functions-package">How-to: Package</a></li><li class="navListItem"><a class="navItem" href="/docs/en/2.9.1/functions-debug">How-to: Debug</a></li><li class="navListItem"><a class="navItem" href="/docs/en/2.9.1/functions-deploy">How-to: Deploy</a></li><li class="navListItem"><a class="navItem" href="/docs/en/2.9.1/functions-cli">Reference: CLI</a></li><li class="navListItem"><a class="navItem" href="/docs/en/2.9.1/window-functions-context">Window Functions: Context</a></li></ul></div><div class="navGroup"><h3 class="navGroupCategoryTitle">Pulsar IO</h3><ul class=""><li class="navListItem"><a class="navItem" href="/docs/en/2.9.1/io-overview">Overview</a></li><li class="navListItem"><a class="navItem" href="/docs/en/2.9.1/io-quickstart">Get started</a></li><li class="navListItem"><a class="navItem" href="/docs/en/2.9.1/io-use">Use</a></li><li class="navListItem"><a class="navItem" href="/docs/en/2.9.1/io-debug">Debug</a></li><li class="navListItem"><a class="navItem" href="/docs/en/2.9.1/io-connectors">Built-in connector</a></li><li class="navListItem"><a class="navItem" href="/docs/en/2.9.1/io-cdc">CDC connector</a></li><li class="navListItem"><a class="navItem" href="/docs/en/2.9.1/io-develop">Develop</a></li><li class="navListItem"><a class="navItem" href="/docs/en/2.9.1/io-cli">CLI</a></li></ul></div><div class="navGroup"><h3 class="navGroupCategoryTitle">Pulsar SQL</h3><ul class=""><li class="navListItem"><a class="navItem" href="/docs/en/2.9.1/sql-overview">Overview</a></li><li class="navListItem"><a class="navItem" href="/docs/en/2.9.1/sql-getting-started">Query data</a></li><li class="navListItem"><a class="navItem" href="/docs/en/2.9.1/sql-deployment-configurations">Configuration and deployment</a></li><li class="navListItem"><a class="navItem" href="/docs/en/2.9.1/sql-rest-api">REST APIs</a></li></ul></div><div class="navGroup"><h3 class="navGroupCategoryTitle">Tiered Storage</h3><ul class=""><li class="navListItem"><a class="navItem" href="/docs/en/2.9.1/tiered-storage-overview">Overview</a></li><li class="navListItem"><a class="navItem" href="/docs/en/2.9.1/tiered-storage-aws">AWS S3 offloader</a></li><li class="navListItem"><a class="navItem" href="/docs/en/2.9.1/tiered-storage-gcs">GCS offloader</a></li><li class="navListItem"><a class="navItem" href="/docs/en/2.9.1/tiered-storage-filesystem">Filesystem offloader</a></li><li class="navListItem"><a class="navItem" href="/docs/en/2.9.1/tiered-storage-azure">Azure BlobStore offloader</a></li><li class="navListItem"><a class="navItem" href="/docs/en/2.9.1/tiered-storage-aliyun">Aliyun OSS offloader</a></li></ul></div><div class="navGroup"><h3 class="navGroupCategoryTitle">Transactions</h3><ul class=""><li class="navListItem"><a class="navItem" href="/docs/en/2.9.1/txn-why">Why transactions?</a></li><li class="navListItem"><a class="navItem" href="/docs/en/2.9.1/txn-what">What are transactions?</a></li><li class="navListItem"><a class="navItem" href="/docs/en/2.9.1/txn-how">How transactions work?</a></li><li class="navListItem"><a class="navItem" href="/docs/en/2.9.1/txn-use">How to use transactions?</a></li><li class="navListItem"><a class="navItem" href="/docs/en/2.9.1/txn-monitor">How to monitor transactions?</a></li></ul></div><div class="navGroup"><h3 class="navGroupCategoryTitle">Kubernetes (Helm)</h3><ul class=""><li class="navListItem"><a class="navItem" href="/docs/en/2.9.1/helm-overview">Overview</a></li><li class="navListItem"><a class="navItem" href="/docs/en/2.9.1/helm-prepare">Prepare</a></li><li class="navListItem"><a class="navItem" href="/docs/en/2.9.1/helm-install">Install</a></li><li class="navListItem"><a class="navItem" href="/docs/en/2.9.1/helm-deploy">Deployment</a></li><li class="navListItem"><a class="navItem" href="/docs/en/2.9.1/helm-upgrade">Upgrade</a></li><li class="navListItem"><a class="navItem" href="/docs/en/2.9.1/helm-tools">Required Tools</a></li></ul></div><div class="navGroup"><h3 class="navGroupCategoryTitle">Deployment</h3><ul class=""><li class="navListItem"><a class="navItem" href="/docs/en/2.9.1/deploy-aws">Amazon Web Services</a></li><li class="navListItem"><a class="navItem" href="/docs/en/2.9.1/deploy-kubernetes">Kubernetes</a></li><li class="navListItem"><a class="navItem" href="/docs/en/2.9.1/deploy-bare-metal">Bare metal</a></li><li class="navListItem"><a class="navItem" href="/docs/en/2.9.1/deploy-bare-metal-multi-cluster">Bare metal multi-cluster</a></li><li class="navListItem"><a class="navItem" href="/docs/en/2.9.1/deploy-docker">Docker</a></li><li class="navListItem"><a class="navItem" href="/docs/en/2.9.1/deploy-monitoring">Monitor</a></li></ul></div><div class="navGroup"><h3 class="navGroupCategoryTitle">Administration</h3><ul class=""><li class="navListItem"><a class="navItem" href="/docs/en/2.9.1/administration-zk-bk">ZooKeeper and BookKeeper</a></li><li class="navListItem"><a class="navItem" href="/docs/en/2.9.1/administration-geo">Geo-replication</a></li><li class="navListItem"><a class="navItem" href="/docs/en/2.9.1/administration-pulsar-manager">Pulsar Manager</a></li><li class="navListItem"><a class="navItem" href="/docs/en/2.9.1/administration-stats">Pulsar statistics</a></li><li class="navListItem"><a class="navItem" href="/docs/en/2.9.1/administration-load-balance">Load balance</a></li><li class="navListItem"><a class="navItem" href="/docs/en/2.9.1/administration-proxy">Pulsar proxy</a></li><li class="navListItem"><a class="navItem" href="/docs/en/2.9.1/administration-upgrade">Upgrade</a></li><li class="navListItem"><a class="navItem" href="/docs/en/2.9.1/administration-isolation">Pulsar isolation</a></li></ul></div><div class="navGroup"><h3 class="navGroupCategoryTitle">Security</h3><ul class=""><li class="navListItem"><a class="navItem" href="/docs/en/2.9.1/security-overview">Overview</a></li><li class="navListItem"><a class="navItem" href="/docs/en/2.9.1/security-tls-transport">Transport Encryption using TLS</a></li><li class="navListItem"><a class="navItem" href="/docs/en/2.9.1/security-tls-authentication">Authentication using TLS</a></li><li class="navListItem"><a class="navItem" href="/docs/en/2.9.1/security-tls-keystore">Using TLS with KeyStore configure</a></li><li class="navListItem"><a class="navItem" href="/docs/en/2.9.1/security-jwt">Authentication using JWT</a></li><li class="navListItem"><a class="navItem" href="/docs/en/2.9.1/security-athenz">Authentication using Athenz</a></li><li class="navListItem"><a class="navItem" href="/docs/en/2.9.1/security-kerberos">Authentication using Kerberos</a></li><li class="navListItem"><a class="navItem" href="/docs/en/2.9.1/security-oauth2">Authentication using OAuth 2.0 access tokens</a></li><li class="navListItem"><a class="navItem" href="/docs/en/2.9.1/security-authorization">Authorization and ACLs</a></li><li class="navListItem"><a class="navItem" href="/docs/en/2.9.1/security-encryption">End-to-End Encryption</a></li><li class="navListItem"><a class="navItem" href="/docs/en/2.9.1/security-extending">Extending</a></li><li class="navListItem"><a class="navItem" href="/docs/en/2.9.1/security-bouncy-castle">Bouncy Castle Providers</a></li></ul></div><div class="navGroup"><h3 class="navGroupCategoryTitle">Performance</h3><ul class=""><li class="navListItem"><a class="navItem" href="/docs/en/2.9.1/performance-pulsar-perf">Pulsar Perf</a></li></ul></div><div class="navGroup"><h3 class="navGroupCategoryTitle">Client Libraries</h3><ul class=""><li class="navListItem"><a class="navItem" href="/docs/en/2.9.1/client-libraries">Overview</a></li><li class="navListItem"><a class="navItem" href="/docs/en/2.9.1/client-libraries-java">Java</a></li><li class="navListItem"><a class="navItem" href="/docs/en/2.9.1/client-libraries-go">Go</a></li><li class="navListItem"><a class="navItem" href="/docs/en/2.9.1/client-libraries-python">Python</a></li><li class="navListItem"><a class="navItem" href="/docs/en/2.9.1/client-libraries-cpp">C++</a></li><li class="navListItem"><a class="navItem" href="/docs/en/2.9.1/client-libraries-node">Node.js</a></li><li class="navListItem"><a class="navItem" href="/docs/en/2.9.1/client-libraries-websocket">WebSocket</a></li><li class="navListItem"><a class="navItem" href="/docs/en/2.9.1/client-libraries-dotnet">C#</a></li></ul></div><div class="navGroup"><h3 class="navGroupCategoryTitle">Admin API</h3><ul class=""><li class="navListItem"><a class="navItem" href="/docs/en/2.9.1/admin-api-overview">Overview</a></li><li class="navListItem navListItemActive"><a class="navItem" href="/docs/en/2.9.1/admin-api-clusters">Clusters</a></li><li class="navListItem"><a class="navItem" href="/docs/en/2.9.1/admin-api-tenants">Tenants</a></li><li class="navListItem"><a class="navItem" href="/docs/en/2.9.1/admin-api-brokers">Brokers</a></li><li class="navListItem"><a class="navItem" href="/docs/en/2.9.1/admin-api-namespaces">Namespaces</a></li><li class="navListItem"><a class="navItem" href="/docs/en/2.9.1/admin-api-permissions">Permissions</a></li><li class="navListItem"><a class="navItem" href="/docs/en/2.9.1/admin-api-topics">Topics</a></li><li class="navListItem"><a class="navItem" href="/docs/en/2.9.1/admin-api-functions">Functions</a></li><li class="navListItem"><a class="navItem" href="/docs/en/2.9.1/admin-api-packages">Packages</a></li></ul></div><div class="navGroup"><h3 class="navGroupCategoryTitle">Adaptors</h3><ul class=""><li class="navListItem"><a class="navItem" href="/docs/en/2.9.1/adaptors-kafka">Kafka client wrapper</a></li><li class="navListItem"><a class="navItem" href="/docs/en/2.9.1/adaptors-spark">Apache Spark</a></li><li class="navListItem"><a class="navItem" href="/docs/en/2.9.1/adaptors-storm">Apache Storm</a></li></ul></div><div class="navGroup"><h3 class="navGroupCategoryTitle">Cookbooks</h3><ul class=""><li class="navListItem"><a class="navItem" href="/docs/en/2.9.1/cookbooks-compaction">Topic compaction</a></li><li class="navListItem"><a class="navItem" href="/docs/en/2.9.1/cookbooks-deduplication">Message deduplication</a></li><li class="navListItem"><a class="navItem" href="/docs/en/2.9.1/cookbooks-non-persistent">Non-persistent messaging</a></li><li class="navListItem"><a class="navItem" href="/docs/en/2.9.1/cookbooks-retention-expiry">Message retention and expiry</a></li><li class="navListItem"><a class="navItem" href="/docs/en/2.9.1/cookbooks-encryption">Encryption</a></li><li class="navListItem"><a class="navItem" href="/docs/en/2.9.1/cookbooks-message-queue">Message queue</a></li><li class="navListItem"><a class="navItem" href="/docs/en/2.9.1/cookbooks-bookkeepermetadata">BookKeeper Ledger Metadata</a></li></ul></div><div class="navGroup"><h3 class="navGroupCategoryTitle">Development</h3><ul class=""><li class="navListItem"><a class="navItem" href="/docs/en/2.9.1/develop-tools">Simulation tools</a></li><li class="navListItem"><a class="navItem" href="/docs/en/2.9.1/developing-binary-protocol">Binary protocol</a></li><li class="navListItem"><a class="navItem" href="/docs/en/2.9.1/develop-schema">Custom schema storage</a></li><li class="navListItem"><a class="navItem" href="/docs/en/2.9.1/develop-load-manager">Modular load manager</a></li></ul></div><div class="navGroup"><h3 class="navGroupCategoryTitle">Reference</h3><ul class=""><li class="navListItem"><a class="navItem" href="/docs/en/2.9.1/reference-terminology">Terminology</a></li><li class="navListItem"><a class="navItem" href="/docs/en/2.9.1/reference-cli-tools">Pulsar CLI tools</a></li><li class="navListItem"><a class="navItem" href="/docs/en/2.9.1/reference-configuration">Pulsar configuration</a></li><li class="navListItem"><a class="navItem" href="/docs/en/2.9.1/reference-metrics">Pulsar Metrics</a></li></ul></div></div></section></div><script>
            var coll = document.getElementsByClassName('collapsible');
            var checkActiveCategory = true;
            for (var i = 0; i < coll.length; i++) {
              var links = coll[i].nextElementSibling.getElementsByTagName('*');
              if (checkActiveCategory){
                for (var j = 0; j < links.length; j++) {
                  if (links[j].classList.contains('navListItemActive')){
                    coll[i].nextElementSibling.classList.toggle('hide');
                    coll[i].childNodes[1].classList.toggle('rotate');
                    checkActiveCategory = false;
                    break;
                  }
                }
              }

              coll[i].addEventListener('click', function() {
                var arrow = this.childNodes[1];
                arrow.classList.toggle('rotate');
                var content = this.nextElementSibling;
                content.classList.toggle('hide');
              });
            }

            document.addEventListener('DOMContentLoaded', function() {
              createToggler('#navToggler', '#docsNav', 'docsSliderActive');
              createToggler('#tocToggler', 'body', 'tocActive');

              var headings = document.querySelector('.toc-headings');
              headings && headings.addEventListener('click', function(event) {
                var el = event.target;
                while(el !== headings){
                  if (el.tagName === 'A') {
                    document.body.classList.remove('tocActive');
                    break;
                  } else{
                    el = el.parentNode;
                  }
                }
              }, false);

              function createToggler(togglerSelector, targetSelector, className) {
                var toggler = document.querySelector(togglerSelector);
                var target = document.querySelector(targetSelector);

                if (!toggler) {
                  return;
                }

                toggler.onclick = function(event) {
                  event.preventDefault();

                  target.classList.toggle(className);
                };
              }
            });
        </script></nav></div><div class="container mainContainer docsContainer"><div class="wrapper"><div class="post"><header class="postHeader"><a class="edit-page-link button" href="https://github.com/apache/pulsar/edit/master/site2/docs/admin-api-clusters.md" target="_blank" rel="noreferrer noopener">Edit</a><h1 id="__docusaurus" class="postHeaderTitle">Managing Clusters</h1></header><article><div><span><blockquote>
<p><strong>Important</strong></p>
<p>This page only shows <strong>some frequently used operations</strong>.</p>
<ul>
<li><p>For the latest and complete information about <code>Pulsar admin</code>, including commands, flags, descriptions, and more, see <a href="https://pulsar.apache.org/tools/pulsar-admin/">Pulsar admin doc</a></p></li>
<li><p>For the latest and complete information about <code>REST API</code>, including parameters, responses, samples, and more, see <a href="https://pulsar.apache.org/admin-rest-api#/">REST</a>
 API doc.</p></li>
<li><p>For the latest and complete information about <code>Java admin API</code>, including classes, methods, descriptions, and more, see <a href="https://pulsar.apache.org/api/admin/2.9.0-SNAPSHOT/">Java admin API doc</a>.</p></li>
</ul>
</blockquote>
<p>Pulsar clusters consist of one or more Pulsar <a href="/docs/en/2.9.1/reference-terminology#broker">brokers</a>, one or more <a href="/docs/en/2.9.1/reference-terminology#bookkeeper">BookKeeper</a>
servers (aka <a href="/docs/en/2.9.1/reference-terminology#bookie">bookies</a>), and a <a href="https://zookeeper.apache.org">ZooKeeper</a> cluster that provides configuration and coordination management.</p>
<p>Clusters can be managed via:</p>
<ul>
<li>The <code>clusters</code> command of the <a href="[reference-pulsar-admin.md](https://pulsar.apache.org/tools/pulsar-admin/)"><code>pulsar-admin</code></a> tool</li>
<li>The <code>/admin/v2/clusters</code> endpoint of the admin <a href="https://pulsar.apache.org/admin-rest-api#/">REST</a>
 API</li>
<li>The <code>clusters</code> method of the <code>PulsarAdmin</code> object in the <a href="/docs/en/2.9.1/client-libraries-java">Java API</a></li>
</ul>
<h2><a class="anchor" aria-hidden="true" id="clusters-resources"></a><a href="#clusters-resources" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.83.42-1.64 1-2.09V6.25c-1.09.53-2 1.84-2 3.25C6 11.31 7.55 13 9 13h4c1.45 0 3-1.69 3-3.5S14.5 6 13 6z"></path></svg></a>Clusters resources</h2>
<h3><a class="anchor" aria-hidden="true" id="provision"></a><a href="#provision" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.83.42-1.64 1-2.09V6.25c-1.09.53-2 1.84-2 3.25C6 11.31 7.55 13 9 13h4c1.45 0 3-1.69 3-3.5S14.5 6 13 6z"></path></svg></a>Provision</h3>
<p>New clusters can be provisioned using the admin interface.</p>
<blockquote>
<p>Please note that this operation requires superuser privileges.</p>
</blockquote>
<div class="tabs"><div class="nav-tabs"><div id="tab-group-2198-tab-2199" class="nav-link active" data-group="group_2198" data-tab="tab-group-2198-content-2199">pulsar-admin</div><div id="tab-group-2198-tab-2200" class="nav-link" data-group="group_2198" data-tab="tab-group-2198-content-2200">REST API</div><div id="tab-group-2198-tab-2201" class="nav-link" data-group="group_2198" data-tab="tab-group-2198-content-2201">JAVA</div></div><div class="tab-content"><div id="tab-group-2198-content-2199" class="tab-pane active" data-group="group_2198" tabindex="-1"><div><span><p>You can provision a new cluster using the <a href="/docs/en/2.9.1/reference-pulsar-admin#clusters-create"><code>create</code></a> subcommand. Here's an example:</p>
<pre><code class="hljs css language-shell"><span class="hljs-meta">$</span><span class="bash"> pulsar-admin clusters create cluster-1 \</span><br />  --url http://my-cluster.org.com:8080 \<br />  --broker-url pulsar://my-cluster.org.com:6650<br /></code></pre>
</span></div></div><div id="tab-group-2198-content-2200" class="tab-pane" data-group="group_2198" tabindex="-1"><div><span><p><a href="https://pulsar.apache.org/admin-rest-api#operation/createCluster?version=2.9.1&amp;apiVersion=v2"><b>PUT</b> <i>/admin/v2/clusters/:cluster</i></a>
</p>
</span></div></div><div id="tab-group-2198-content-2201" class="tab-pane" data-group="group_2198" tabindex="-1"><div><span><pre><code class="hljs css language-java">ClusterData clusterData = <span class="hljs-keyword">new</span> ClusterData(<br />        serviceUrl,<br />        serviceUrlTls,<br />        brokerServiceUrl,<br />        brokerServiceUrlTls<br />);<br />admin.clusters().createCluster(clusterName, clusterData);<br /></code></pre>
</span></div></div></div></div>
<h3><a class="anchor" aria-hidden="true" id="initialize-cluster-metadata"></a><a href="#initialize-cluster-metadata" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.83.42-1.64 1-2.09V6.25c-1.09.53-2 1.84-2 3.25C6 11.31 7.55 13 9 13h4c1.45 0 3-1.69 3-3.5S14.5 6 13 6z"></path></svg></a>Initialize cluster metadata</h3>
<p>When provision a new cluster, you need to initialize that cluster's <a href="/docs/en/2.9.1/concepts-architecture-overview#metadata-store">metadata</a>. When initializing cluster metadata, you need to specify all of the following:</p>
<ul>
<li>The name of the cluster</li>
<li>The local ZooKeeper connection string for the cluster</li>
<li>The configuration store connection string for the entire instance</li>
<li>The web service URL for the cluster</li>
<li>A broker service URL enabling interaction with the <a href="/docs/en/2.9.1/reference-terminology#broker">brokers</a> in the cluster</li>
</ul>
<p>You must initialize cluster metadata <em>before</em> starting up any <a href="/docs/en/2.9.1/admin-api-brokers">brokers</a> that will belong to the cluster.</p>
<blockquote>
<p><strong>No cluster metadata initialization through the REST API or the Java admin API</strong></p>
<p>Unlike most other admin functions in Pulsar, cluster metadata initialization cannot be performed via the admin REST API
or the admin Java client, as metadata initialization involves communicating with ZooKeeper directly.
Instead, you can use the <a href="/docs/en/2.9.1/reference-cli-tools#pulsar"><code>pulsar</code></a> CLI tool, in particular
the <a href="/docs/en/2.9.1/reference-cli-tools#pulsar-initialize-cluster-metadata"><code>initialize-cluster-metadata</code></a> command.</p>
</blockquote>
<p>Here's an example cluster metadata initialization command:</p>
<pre><code class="hljs css language-shell">bin/pulsar initialize-cluster-metadata \
  --cluster us-west \
  --zookeeper zk1.us-west.example.com:2181 \
  --configuration-store zk1.us-west.example.com:2184 \
  --web-service-url http://pulsar.us-west.example.com:8080/ \
  --web-service-url-tls https://pulsar.us-west.example.com:8443/ \
  --broker-service-url pulsar://pulsar.us-west.example.com:6650/ \
  --broker-service-url-tls pulsar+ssl://pulsar.us-west.example.com:6651/
</code></pre>
<p>You'll need to use <code>--*-tls</code> flags only if you're using <a href="/docs/en/2.9.1/security-tls-authentication">TLS authentication</a> in your instance.</p>
<h3><a class="anchor" aria-hidden="true" id="get-configuration"></a><a href="#get-configuration" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.83.42-1.64 1-2.09V6.25c-1.09.53-2 1.84-2 3.25C6 11.31 7.55 13 9 13h4c1.45 0 3-1.69 3-3.5S14.5 6 13 6z"></path></svg></a>Get configuration</h3>
<p>You can fetch the <a href="/docs/en/2.9.1/reference-configuration">configuration</a> for an existing cluster at any time.</p>
<div class="tabs"><div class="nav-tabs"><div id="tab-group-2202-tab-2203" class="nav-link active" data-group="group_2202" data-tab="tab-group-2202-content-2203">pulsar-admin</div><div id="tab-group-2202-tab-2204" class="nav-link" data-group="group_2202" data-tab="tab-group-2202-content-2204">REST API</div><div id="tab-group-2202-tab-2205" class="nav-link" data-group="group_2202" data-tab="tab-group-2202-content-2205">JAVA</div></div><div class="tab-content"><div id="tab-group-2202-content-2203" class="tab-pane active" data-group="group_2202" tabindex="-1"><div><span><p>Use the <a href="/docs/en/2.9.1/reference-pulsar-admin#clusters-get"><code>get</code></a> subcommand and specify the name of the cluster. Here's an example:</p>
<pre><code class="hljs css language-shell"><span class="hljs-meta">$</span><span class="bash"> pulsar-admin clusters get cluster-1</span><br />{<br />    "serviceUrl": "http://my-cluster.org.com:8080/",<br />    "serviceUrlTls": null,<br />    "brokerServiceUrl": "pulsar://my-cluster.org.com:6650/",<br />    "brokerServiceUrlTls": null<br />    "peerClusterNames": null<br />}<br /></code></pre>
</span></div></div><div id="tab-group-2202-content-2204" class="tab-pane" data-group="group_2202" tabindex="-1"><div><span><p><a href="https://pulsar.apache.org/admin-rest-api#operation/getCluster?version=2.9.1&amp;apiVersion=v2"><b>GET</b> <i>/admin/v2/clusters/:cluster</i></a>
</p>
</span></div></div><div id="tab-group-2202-content-2205" class="tab-pane" data-group="group_2202" tabindex="-1"><div><span><pre><code class="hljs css language-java">admin.clusters().getCluster(clusterName);<br /></code></pre>
</span></div></div></div></div>
<h3><a class="anchor" aria-hidden="true" id="update"></a><a href="#update" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.83.42-1.64 1-2.09V6.25c-1.09.53-2 1.84-2 3.25C6 11.31 7.55 13 9 13h4c1.45 0 3-1.69 3-3.5S14.5 6 13 6z"></path></svg></a>Update</h3>
<p>You can update the configuration for an existing cluster at any time.</p>
<div class="tabs"><div class="nav-tabs"><div id="tab-group-2206-tab-2207" class="nav-link active" data-group="group_2206" data-tab="tab-group-2206-content-2207">pulsar-admin</div><div id="tab-group-2206-tab-2208" class="nav-link" data-group="group_2206" data-tab="tab-group-2206-content-2208">REST API</div><div id="tab-group-2206-tab-2209" class="nav-link" data-group="group_2206" data-tab="tab-group-2206-content-2209">JAVA</div></div><div class="tab-content"><div id="tab-group-2206-content-2207" class="tab-pane active" data-group="group_2206" tabindex="-1"><div><span><p>Use the <a href="/docs/en/2.9.1/reference-pulsar-admin#clusters-update"><code>update</code></a> subcommand and specify new configuration values using flags.</p>
<pre><code class="hljs css language-shell"><span class="hljs-meta">$</span><span class="bash"> pulsar-admin clusters update cluster-1 \</span><br />  --url http://my-cluster.org.com:4081 \<br />  --broker-url pulsar://my-cluster.org.com:3350<br /></code></pre>
</span></div></div><div id="tab-group-2206-content-2208" class="tab-pane" data-group="group_2206" tabindex="-1"><div><span><p><a href="https://pulsar.apache.org/admin-rest-api#operation/updateCluster?version=2.9.1&amp;apiVersion=v2"><b>POST</b> <i>/admin/v2/clusters/:cluster</i></a>
</p>
</span></div></div><div id="tab-group-2206-content-2209" class="tab-pane" data-group="group_2206" tabindex="-1"><div><span><pre><code class="hljs css language-java">ClusterData clusterData = <span class="hljs-keyword">new</span> ClusterData(<br />        serviceUrl,<br />        serviceUrlTls,<br />        brokerServiceUrl,<br />        brokerServiceUrlTls<br />);<br />admin.clusters().updateCluster(clusterName, clusterData);<br /></code></pre>
</span></div></div></div></div>
<h3><a class="anchor" aria-hidden="true" id="delete"></a><a href="#delete" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.83.42-1.64 1-2.09V6.25c-1.09.53-2 1.84-2 3.25C6 11.31 7.55 13 9 13h4c1.45 0 3-1.69 3-3.5S14.5 6 13 6z"></path></svg></a>Delete</h3>
<p>Clusters can be deleted from a Pulsar <a href="/docs/en/2.9.1/reference-terminology#instance">instance</a>.</p>
<div class="tabs"><div class="nav-tabs"><div id="tab-group-2210-tab-2211" class="nav-link active" data-group="group_2210" data-tab="tab-group-2210-content-2211">pulsar-admin</div><div id="tab-group-2210-tab-2212" class="nav-link" data-group="group_2210" data-tab="tab-group-2210-content-2212">REST API</div><div id="tab-group-2210-tab-2213" class="nav-link" data-group="group_2210" data-tab="tab-group-2210-content-2213">JAVA</div></div><div class="tab-content"><div id="tab-group-2210-content-2211" class="tab-pane active" data-group="group_2210" tabindex="-1"><div><span><p>Use the <a href="/docs/en/2.9.1/reference-pulsar-admin#clusters-delete"><code>delete</code></a> subcommand and specify the name of the cluster.</p>
<pre><code class="hljs">$ pulsar-<span class="hljs-keyword">admin</span> clusters <span class="hljs-keyword">delete</span> <span class="hljs-keyword">cluster</span><span class="hljs-number">-1</span><br /></code></pre>
</span></div></div><div id="tab-group-2210-content-2212" class="tab-pane" data-group="group_2210" tabindex="-1"><div><span><p><a href="https://pulsar.apache.org/admin-rest-api#operation/deleteCluster?version=2.9.1&amp;apiVersion=v2"><b>DELETE</b> <i>/admin/v2/clusters/:cluster</i></a>
</p>
</span></div></div><div id="tab-group-2210-content-2213" class="tab-pane" data-group="group_2210" tabindex="-1"><div><span><pre><code class="hljs css language-java">admin.clusters().deleteCluster(clusterName);<br /></code></pre>
</span></div></div></div></div>
<h3><a class="anchor" aria-hidden="true" id="list"></a><a href="#list" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.83.42-1.64 1-2.09V6.25c-1.09.53-2 1.84-2 3.25C6 11.31 7.55 13 9 13h4c1.45 0 3-1.69 3-3.5S14.5 6 13 6z"></path></svg></a>List</h3>
<p>You can fetch a list of all clusters in a Pulsar <a href="/docs/en/2.9.1/reference-terminology#instance">instance</a>.</p>
<div class="tabs"><div class="nav-tabs"><div id="tab-group-2214-tab-2215" class="nav-link active" data-group="group_2214" data-tab="tab-group-2214-content-2215">pulsar-admin</div><div id="tab-group-2214-tab-2216" class="nav-link" data-group="group_2214" data-tab="tab-group-2214-content-2216">REST API</div><div id="tab-group-2214-tab-2217" class="nav-link" data-group="group_2214" data-tab="tab-group-2214-content-2217">JAVA</div></div><div class="tab-content"><div id="tab-group-2214-content-2215" class="tab-pane active" data-group="group_2214" tabindex="-1"><div><span><p>Use the <a href="/docs/en/2.9.1/reference-pulsar-admin#clusters-list"><code>list</code></a> subcommand.</p>
<pre><code class="hljs css language-shell"><span class="hljs-meta">$</span><span class="bash"> pulsar-admin clusters list</span><br />cluster-1<br />cluster-2<br /></code></pre>
</span></div></div><div id="tab-group-2214-content-2216" class="tab-pane" data-group="group_2214" tabindex="-1"><div><span><p><a href="https://pulsar.apache.org/admin-rest-api#operation/getClusters?version=2.9.1&amp;apiVersion=v2"><b>GET</b> <i>/admin/v2/clusters</i></a>
</p>
</span></div></div><div id="tab-group-2214-content-2217" class="tab-pane" data-group="group_2214" tabindex="-1"><div><span><pre><code class="hljs css language-java">admin.clusters().getClusters();<br /></code></pre>
</span></div></div></div></div>
<h3><a class="anchor" aria-hidden="true" id="update-peer-cluster-data"></a><a href="#update-peer-cluster-data" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.83.42-1.64 1-2.09V6.25c-1.09.53-2 1.84-2 3.25C6 11.31 7.55 13 9 13h4c1.45 0 3-1.69 3-3.5S14.5 6 13 6z"></path></svg></a>Update peer-cluster data</h3>
<p>Peer clusters can be configured for a given cluster in a Pulsar <a href="/docs/en/2.9.1/reference-terminology#instance">instance</a>.</p>
<div class="tabs"><div class="nav-tabs"><div id="tab-group-2218-tab-2219" class="nav-link active" data-group="group_2218" data-tab="tab-group-2218-content-2219">pulsar-admin</div><div id="tab-group-2218-tab-2220" class="nav-link" data-group="group_2218" data-tab="tab-group-2218-content-2220">REST API</div><div id="tab-group-2218-tab-2221" class="nav-link" data-group="group_2218" data-tab="tab-group-2218-content-2221">JAVA</div></div><div class="tab-content"><div id="tab-group-2218-content-2219" class="tab-pane active" data-group="group_2218" tabindex="-1"><div><span><p>Use the <a href="/docs/en/2.9.1/reference-pulsar-admin#clusters-update-peer-clusters"><code>update-peer-clusters</code></a> subcommand and specify the list of peer-cluster names.</p>
<pre><code class="hljs">$ pulsar-<span class="hljs-keyword">admin</span> <span class="hljs-keyword">update</span>-peer-clusters <span class="hljs-keyword">cluster</span><span class="hljs-number">-1</span> <span class="hljs-comment">--peer-clusters cluster-2</span><br /></code></pre>
</span></div></div><div id="tab-group-2218-content-2220" class="tab-pane" data-group="group_2218" tabindex="-1"><div><span><p><a href="https://pulsar.apache.org/admin-rest-api#operation/setPeerClusterNames?version=2.9.1&amp;apiVersion=v2"><b>POST</b> <i>/admin/v2/clusters/:cluster/peers</i></a>
</p>
</span></div></div><div id="tab-group-2218-content-2221" class="tab-pane" data-group="group_2218" tabindex="-1"><div><span><pre><code class="hljs css language-java">admin.clusters().updatePeerClusterNames(clusterName, peerClusterList);<br /></code></pre>
</span></div></div></div></div></span></div></article></div><div class="docs-prevnext"><a class="docs-prev button" href="/docs/en/2.9.1/admin-api-overview"><span class="arrow-prev">← </span><span>Overview</span></a><a class="docs-next button" href="/docs/en/2.9.1/admin-api-tenants"><span>Tenants</span><span class="arrow-next"> →</span></a></div></div></div><nav class="onPageNav"><ul class="toc-headings"><li><a href="#clusters-resources">Clusters resources</a><ul class="toc-headings"><li><a href="#provision">Provision</a></li><li><a href="#initialize-cluster-metadata">Initialize cluster metadata</a></li><li><a href="#get-configuration">Get configuration</a></li><li><a href="#update">Update</a></li><li><a href="#delete">Delete</a></li><li><a href="#list">List</a></li><li><a href="#update-peer-cluster-data">Update peer-cluster data</a></li></ul></li></ul></nav></div><footer class="nav-footer" id="footer"><section class="copyright">Copyright © 2022 The Apache Software Foundation. All Rights Reserved. Apache, Apache Pulsar and the Apache feather logo are trademarks of The Apache Software Foundation.</section><span><script>
      const community = document.querySelector("a[href='#community']").parentNode;
      const communityMenu =
        '<li>' +
        '<a id="community-menu" href="#">Community <span style="font-size: 0.75em">&nbsp;▼</span></a>' +
        '<div id="community-dropdown" class="hide">' +
          '<ul id="community-dropdown-items">' +
            '<li><a href="/en/contact">Contact</a></li>' +
            '<li><a href="/en/contributing">Contributing</a></li>' +
            '<li><a href="/en/coding-guide">Coding guide</a></li>' +
            '<li><a href="/en/events">Events</a></li>' +
            '<li><a href="https://twitter.com/Apache_Pulsar" target="_blank">Twitter &#x2750</a></li>' +
            '<li><a href="https://github.com/apache/pulsar/wiki" target="_blank">Wiki &#x2750</a></li>' +
            '<li><a href="https://github.com/apache/pulsar/issues" target="_blank">Issue tracking &#x2750</a></li>' +
            '<li><a href="https://pulsar-summit.org/" target="_blank">Pulsar Summit &#x2750</a></li>' +
            '<li>&nbsp;</li>' +
            '<li><a href="/en/resources">Resources</a></li>' +
            '<li><a href="/en/team">Team</a></li>' +
            '<li><a href="/en/powered-by">Powered By</a></li>' +
          '</ul>' +
        '</div>' +
        '</li>';

      community.innerHTML = communityMenu;

      const communityMenuItem = document.getElementById("community-menu");
      const communityDropDown = document.getElementById("community-dropdown");
      communityMenuItem.addEventListener("click", function(event) {
        event.preventDefault();

        if (communityDropDown.className == 'hide') {
          communityDropDown.className = 'visible';
        } else {
          communityDropDown.className = 'hide';
        }
      });
    </script></span></footer></div><script>window.twttr=(function(d,s, id){var js,fjs=d.getElementsByTagName(s)[0],t=window.twttr||{};if(d.getElementById(id))return t;js=d.createElement(s);js.id=id;js.src='https://platform.twitter.com/widgets.js';fjs.parentNode.insertBefore(js, fjs);t._e = [];t.ready = function(f) {t._e.push(f);};return t;}(document, 'script', 'twitter-wjs'));</script></body></html>