<!DOCTYPE html><html lang="en"><head><meta charSet="utf-8"/><meta http-equiv="X-UA-Compatible" content="IE=edge"/><title>Pulsar admin interface · Apache Pulsar</title><meta name="viewport" content="width=device-width, initial-scale=1.0"/><meta name="generator" content="Docusaurus"/><meta name="description" content="The Pulsar admin interface enables you to manage all important entities in a Pulsar instance, such as tenants, topics, and namespaces."/><meta name="docsearch:version" content="2.10.0"/><meta name="docsearch:language" content="en"/><meta property="og:title" content="Pulsar admin interface · Apache Pulsar"/><meta property="og:type" content="website"/><meta property="og:url" content="https://pulsar.apache.org/"/><meta property="og:description" content="The Pulsar admin interface enables you to manage all important entities in a Pulsar instance, such as tenants, topics, and namespaces."/><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>2.10.0</h3></a><div class="navigationWrapper navigationSlider"><nav class="slidingNav"><ul class="nav-site nav-site-internal"><li class="siteNavGroupActive"><a href="/docs/en/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/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/admin-api-overview">日本語</a></li><li><a href="/docs/fr/admin-api-overview">Français</a></li><li><a href="/docs/ko/admin-api-overview">한국어</a></li><li><a href="/docs/zh-CN/admin-api-overview">中文</a></li><li><a href="/docs/zh-TW/admin-api-overview">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>
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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/concepts-overview">Overview</a></li><li class="navListItem"><a class="navItem" href="/docs/en/concepts-messaging">Messaging</a></li><li class="navListItem"><a class="navItem" href="/docs/en/concepts-architecture-overview">Architecture</a></li><li class="navListItem"><a class="navItem" href="/docs/en/concepts-clients">Clients</a></li><li class="navListItem"><a class="navItem" href="/docs/en/concepts-replication">Geo Replication</a></li><li class="navListItem"><a class="navItem" href="/docs/en/concepts-multi-tenancy">Multi Tenancy</a></li><li class="navListItem"><a class="navItem" href="/docs/en/concepts-authentication">Authentication and Authorization</a></li><li class="navListItem"><a class="navItem" href="/docs/en/concepts-topic-compaction">Topic Compaction</a></li><li class="navListItem"><a class="navItem" href="/docs/en/concepts-proxy-sni-routing">Proxy support with SNI routing</a></li><li class="navListItem"><a class="navItem" href="/docs/en/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/schema-get-started">Get started</a></li><li class="navListItem"><a class="navItem" href="/docs/en/schema-understand">Understand schema</a></li><li class="navListItem"><a class="navItem" href="/docs/en/schema-evolution-compatibility">Schema evolution and compatibility</a></li><li class="navListItem"><a class="navItem" href="/docs/en/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/functions-overview">Overview</a></li><li class="navListItem"><a class="navItem" href="/docs/en/functions-runtime">Setup: Configure Functions runtime</a></li><li class="navListItem"><a class="navItem" href="/docs/en/functions-worker">Setup: Pulsar Functions Worker</a></li><li class="navListItem"><a class="navItem" href="/docs/en/functions-develop">How-to: Develop</a></li><li class="navListItem"><a class="navItem" href="/docs/en/functions-package">How-to: Package</a></li><li class="navListItem"><a class="navItem" href="/docs/en/functions-debug">How-to: Debug</a></li><li class="navListItem"><a class="navItem" href="/docs/en/functions-deploy">How-to: Deploy</a></li><li class="navListItem"><a class="navItem" href="/docs/en/functions-cli">Reference: CLI</a></li><li class="navListItem"><a class="navItem" href="/docs/en/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/io-overview">Overview</a></li><li class="navListItem"><a class="navItem" href="/docs/en/io-quickstart">Get started</a></li><li class="navListItem"><a class="navItem" href="/docs/en/io-use">Use</a></li><li class="navListItem"><a class="navItem" href="/docs/en/io-debug">Debug</a></li><li class="navListItem"><a class="navItem" href="/docs/en/io-connectors">Built-in connector</a></li><li class="navListItem"><a class="navItem" href="/docs/en/io-cdc">CDC connector</a></li><li class="navListItem"><a class="navItem" href="/docs/en/io-develop">Develop</a></li><li class="navListItem"><a class="navItem" href="/docs/en/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/sql-overview">Overview</a></li><li class="navListItem"><a class="navItem" href="/docs/en/sql-getting-started">Query data</a></li><li class="navListItem"><a class="navItem" href="/docs/en/sql-deployment-configurations">Configuration and deployment</a></li><li class="navListItem"><a class="navItem" href="/docs/en/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/tiered-storage-overview">Overview</a></li><li class="navListItem"><a class="navItem" href="/docs/en/tiered-storage-aws">AWS S3 offloader</a></li><li class="navListItem"><a class="navItem" href="/docs/en/tiered-storage-gcs">GCS offloader</a></li><li class="navListItem"><a class="navItem" href="/docs/en/tiered-storage-filesystem">Filesystem offloader</a></li><li class="navListItem"><a class="navItem" href="/docs/en/tiered-storage-azure">Azure BlobStore offloader</a></li><li class="navListItem"><a class="navItem" href="/docs/en/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/txn-why">Why transactions?</a></li><li class="navListItem"><a class="navItem" href="/docs/en/txn-what">What are transactions?</a></li><li class="navListItem"><a class="navItem" href="/docs/en/txn-how">How transactions work?</a></li><li class="navListItem"><a class="navItem" href="/docs/en/txn-use">How to use transactions?</a></li><li class="navListItem"><a class="navItem" href="/docs/en/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/helm-overview">Overview</a></li><li class="navListItem"><a class="navItem" href="/docs/en/helm-prepare">Prepare</a></li><li class="navListItem"><a class="navItem" href="/docs/en/helm-install">Install</a></li><li class="navListItem"><a class="navItem" href="/docs/en/helm-deploy">Deployment</a></li><li class="navListItem"><a class="navItem" 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class="navGroupCategoryTitle">Administration</h3><ul class=""><li class="navListItem"><a class="navItem" href="/docs/en/administration-zk-bk">ZooKeeper and BookKeeper</a></li><li class="navListItem"><a class="navItem" href="/docs/en/administration-geo">Geo-replication</a></li><li class="navListItem"><a class="navItem" href="/docs/en/administration-pulsar-manager">Pulsar Manager</a></li><li class="navListItem"><a class="navItem" href="/docs/en/administration-stats">Pulsar statistics</a></li><li class="navListItem"><a class="navItem" href="/docs/en/administration-load-balance">Load balance</a></li><li class="navListItem"><a class="navItem" href="/docs/en/administration-proxy">Pulsar proxy</a></li><li class="navListItem"><a class="navItem" href="/docs/en/administration-upgrade">Upgrade</a></li><li class="navListItem"><a class="navItem" href="/docs/en/administration-isolation">Pulsar isolation</a></li></ul></div><div class="navGroup"><h3 class="navGroupCategoryTitle">Security</h3><ul 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href="/docs/en/security-oauth2">Authentication using OAuth 2.0 access tokens</a></li><li class="navListItem"><a class="navItem" href="/docs/en/security-authorization">Authorization and ACLs</a></li><li class="navListItem"><a class="navItem" href="/docs/en/security-encryption">End-to-End Encryption</a></li><li class="navListItem"><a class="navItem" href="/docs/en/security-extending">Extend Authentication and Authorization</a></li><li class="navListItem"><a class="navItem" href="/docs/en/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/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/client-libraries">Overview</a></li><li class="navListItem"><a class="navItem" 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href="/docs/en/admin-api-clusters">Clusters</a></li><li class="navListItem"><a class="navItem" href="/docs/en/admin-api-tenants">Tenants</a></li><li class="navListItem"><a class="navItem" href="/docs/en/admin-api-brokers">Brokers</a></li><li class="navListItem"><a class="navItem" href="/docs/en/admin-api-namespaces">Namespaces</a></li><li class="navListItem"><a class="navItem" href="/docs/en/admin-api-permissions">Permissions</a></li><li class="navListItem"><a class="navItem" href="/docs/en/admin-api-topics">Topics</a></li><li class="navListItem"><a class="navItem" href="/docs/en/admin-api-functions">Functions</a></li><li class="navListItem"><a class="navItem" href="/docs/en/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/adaptors-kafka">Kafka client wrapper</a></li><li class="navListItem"><a class="navItem" href="/docs/en/adaptors-spark">Apache Spark</a></li><li class="navListItem"><a class="navItem" href="/docs/en/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/cookbooks-compaction">Topic compaction</a></li><li class="navListItem"><a class="navItem" href="/docs/en/cookbooks-deduplication">Message deduplication</a></li><li class="navListItem"><a class="navItem" href="/docs/en/cookbooks-non-persistent">Non-persistent messaging</a></li><li class="navListItem"><a class="navItem" href="/docs/en/cookbooks-retention-expiry">Message retention and expiry</a></li><li class="navListItem"><a class="navItem" href="/docs/en/cookbooks-encryption">Encryption</a></li><li class="navListItem"><a class="navItem" href="/docs/en/cookbooks-message-queue">Message queue</a></li><li class="navListItem"><a class="navItem" href="/docs/en/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/develop-tools">Simulation tools</a></li><li class="navListItem"><a class="navItem" href="/docs/en/developing-binary-protocol">Binary protocol</a></li><li class="navListItem"><a class="navItem" href="/docs/en/develop-schema">Custom schema storage</a></li><li class="navListItem"><a class="navItem" href="/docs/en/develop-load-manager">Modular load manager</a></li><li class="navListItem"><a class="navItem" href="/docs/en/develop-plugin">Plugin</a></li></ul></div><div class="navGroup"><h3 class="navGroupCategoryTitle">Reference</h3><ul class=""><li class="navListItem"><a class="navItem" href="/docs/en/reference-terminology">Terminology</a></li><li class="navListItem"><a class="navItem" href="/docs/en/reference-cli-tools">Pulsar CLI tools</a></li><li class="navListItem"><a class="navItem" 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<p>You can interact with the admin interface via:</p>
<ul>
<li><p>The <code>pulsar-admin</code> CLI tool, which is available in the <code>bin</code> folder of your Pulsar installation:</p>
<pre><code class="hljs css language-shell">bin/pulsar-admin
</code></pre>
<blockquote>
<p><strong>Important</strong></p>
<p>For the latest and complete information about <code>Pulsar admin</code>, including commands, flags, descriptions, and more information, see <a href="https://pulsar.apache.org/tools/pulsar-admin/">Pulsar admin doc</a>.</p>
</blockquote></li>
<li><p>HTTP calls, which are made against the admin <a href="https://pulsar.apache.org/admin-rest-api#/">REST</a>
 API provided by Pulsar brokers. For some RESTful APIs, they might be redirected to the owner brokers for serving with <a href="https://developer.mozilla.org/en-US/docs/Web/HTTP/Status/307"><code>307 Temporary Redirect</code></a>, hence the HTTP callers should handle <code>307 Temporary Redirect</code>. If you use <code>curl</code> commands, you should specify <code>-L</code> to handle redirections.</p>
<blockquote>
<p><strong>Important</strong></p>
<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>
</blockquote></li>
<li><p>A Java client interface.</p>
<blockquote>
<p><strong>Important</strong></p>
<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/2.10.0-SNAPSHOT/">Java admin API doc</a>.</p>
</blockquote></li>
</ul>
<blockquote>
<p><strong>The REST API is the admin interface</strong>. Both the <code>pulsar-admin</code> CLI tool and the Java client use the REST API. If you implement your own admin interface client, you should use the REST API.</p>
</blockquote>
<h2><a class="anchor" aria-hidden="true" id="admin-setup"></a><a href="#admin-setup" 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>Admin setup</h2>
<p>Each of the three admin interfaces (the <code>pulsar-admin</code> CLI tool, the <a href="https://pulsar.apache.org/admin-rest-api#/">REST</a>
 API, and the <a href="/api/admin/2.10.0-SNAPSHOT">Java admin API</a>) requires some special setup if you have enabled authentication in your Pulsar instance.</p>
<div class="tabs"><div class="nav-tabs"><div id="tab-group-913-tab-914" class="nav-link active" data-group="group_913" data-tab="tab-group-913-content-914">pulsar-admin</div><div id="tab-group-913-tab-915" class="nav-link" data-group="group_913" data-tab="tab-group-913-content-915">REST API</div><div id="tab-group-913-tab-916" class="nav-link" data-group="group_913" data-tab="tab-group-913-content-916">Java</div></div><div class="tab-content"><div id="tab-group-913-content-914" class="tab-pane active" data-group="group_913" tabindex="-1"><div><span><p>If you have enabled authentication, you need to provide an auth configuration to use the <code>pulsar-admin</code> tool. By default, the configuration for the <code>pulsar-admin</code> tool is in the <a href="/docs/en/reference-configuration#client"><code>conf/client.conf</code></a> file. The following are the available parameters:</p>
<table>
<thead>
<tr><th>Name</th><th>Description</th><th>Default</th></tr>
</thead>
<tbody>
<tr><td>webServiceUrl</td><td>The web URL for the cluster.</td><td><a href="http://localhost:8080/">http://localhost:8080/</a></td></tr>
<tr><td>brokerServiceUrl</td><td>The Pulsar protocol URL for the cluster.</td><td><a href="pulsar://localhost:6650/">pulsar://localhost:6650/</a></td></tr>
<tr><td>authPlugin</td><td>The authentication plugin.</td><td></td></tr>
<tr><td>authParams</td><td>The authentication parameters for the cluster, as a comma-separated string.</td><td></td></tr>
<tr><td>useTls</td><td>Whether or not TLS authentication will be enforced in the cluster.</td><td>false</td></tr>
<tr><td>tlsAllowInsecureConnection</td><td>Accept untrusted TLS certificate from client.</td><td>false</td></tr>
<tr><td>tlsTrustCertsFilePath</td><td>Path for the trusted TLS certificate file.</td><td></td></tr>
</tbody>
</table>
</span></div></div><div id="tab-group-913-content-915" class="tab-pane" data-group="group_913" tabindex="-1"><div><span><p>You can find details for the REST API exposed by Pulsar brokers in this <a href="https://pulsar.apache.org/admin-rest-api#/">document</a>
.</p>
</span></div></div><div id="tab-group-913-content-916" class="tab-pane" data-group="group_913" tabindex="-1"><div><span><p>To use the Java admin API, instantiate a <a href="https://pulsar.apache.org/api/admin/2.10.0-SNAPSHOT/org/apache/pulsar/client/admin/PulsarAdmin">PulsarAdmin</a>
 object, and specify a URL for a Pulsar broker and a <a href="https://pulsar.apache.org/api/admin/2.10.0-SNAPSHOT/org/apache/pulsar/client/admin/PulsarAdminBuilder">PulsarAdminBuilder</a>
. The following is a minimal example using <code>localhost</code>:</p>
<pre><code class="hljs css language-java">String url = <span class="hljs-string">"http://localhost:8080"</span>;<br /><span class="hljs-comment">// Pass auth-plugin class fully-qualified name if Pulsar-security enabled</span><br />String authPluginClassName = <span class="hljs-string">"com.org.MyAuthPluginClass"</span>;<br /><span class="hljs-comment">// Pass auth-param if auth-plugin class requires it</span><br />String authParams = <span class="hljs-string">"param1=value1"</span>;<br /><span class="hljs-keyword">boolean</span> useTls = <span class="hljs-keyword">false</span>;<br /><span class="hljs-keyword">boolean</span> tlsAllowInsecureConnection = <span class="hljs-keyword">false</span>;<br />String tlsTrustCertsFilePath = <span class="hljs-keyword">null</span>;<br />PulsarAdmin admin = PulsarAdmin.builder()<br />.authentication(authPluginClassName,authParams)<br />.serviceHttpUrl(url)<br />.tlsTrustCertsFilePath(tlsTrustCertsFilePath)<br />.allowTlsInsecureConnection(tlsAllowInsecureConnection)<br />.build();<br /></code></pre>
<p>If you use multiple brokers, you can use multi-host like Pulsar service. For example,</p>
<pre><code class="hljs css language-java">String url = <span class="hljs-string">"http://localhost:8080,localhost:8081,localhost:8082"</span>;<br /><span class="hljs-comment">// Pass auth-plugin class fully-qualified name if Pulsar-security enabled</span><br />String authPluginClassName = <span class="hljs-string">"com.org.MyAuthPluginClass"</span>;<br /><span class="hljs-comment">// Pass auth-param if auth-plugin class requires it</span><br />String authParams = <span class="hljs-string">"param1=value1"</span>;<br /><span class="hljs-keyword">boolean</span> useTls = <span class="hljs-keyword">false</span>;<br /><span class="hljs-keyword">boolean</span> tlsAllowInsecureConnection = <span class="hljs-keyword">false</span>;<br />String tlsTrustCertsFilePath = <span class="hljs-keyword">null</span>;<br />PulsarAdmin admin = PulsarAdmin.builder()<br />.authentication(authPluginClassName,authParams)<br />.serviceHttpUrl(url)<br />.tlsTrustCertsFilePath(tlsTrustCertsFilePath)<br />.allowTlsInsecureConnection(tlsAllowInsecureConnection)<br />.build();<br /></code></pre>
</span></div></div></div></div>
<h2><a class="anchor" aria-hidden="true" id="how-to-define-pulsar-resource-names-when-running-pulsar-in-kubernetes"></a><a href="#how-to-define-pulsar-resource-names-when-running-pulsar-in-kubernetes" 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>How to define Pulsar resource names when running Pulsar in Kubernetes</h2>
<p>If you run Pulsar Functions or connectors on Kubernetes, you need to follow Kubernetes naming convention to define the names of your Pulsar resources, whichever admin interface you use.</p>
<p>Kubernetes requires a name that can be used as a DNS subdomain name as defined in <a href="https://kubernetes.io/docs/concepts/overview/working-with-objects/names/#names">RFC 1123</a>. Pulsar supports more legal characters than Kubernetes naming convention. If you create a Pulsar resource name with special characters that are not supported by Kubernetes (for example, including colons in a Pulsar namespace name), Kubernetes runtime translates the Pulsar object names into Kubernetes resource labels which are in RFC 1123-compliant forms. Consequently, you can run functions or connectors using Kubernetes runtime. The rules for translating Pulsar object names into Kubernetes resource labels are as below:</p>
<ul>
<li><p>Truncate to 63 characters</p></li>
<li><p>Replace the following characters with dashes (-):</p>
<ul>
<li><p>Non-alphanumeric characters</p></li>
<li><p>Underscores (_)</p></li>
<li><p>Dots (.)</p></li>
</ul></li>
<li><p>Replace beginning and ending non-alphanumeric characters with 0</p></li>
</ul>
<blockquote>
<p><strong>Tip</strong></p>
<ul>
<li><p>If you get an error in translating Pulsar object names into Kubernetes resource labels (for example, you may have a naming collision if your Pulsar object name is too long) or want to customize the translating rules, see <a href="https://pulsar.apache.org/docs/en/next/functions-runtime/#customize-kubernetes-runtime">customize Kubernetes runtime</a>.</p></li>
<li><p>For how to configure Kubernetes runtime, see <a href="https://pulsar.apache.org/docs/en/next/functions-runtime/#configure-kubernetes-runtime">here</a>.</p></li>
</ul>
</blockquote>
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