<!DOCTYPE html><html lang="en"><head><meta charSet="utf-8"/><meta http-equiv="X-UA-Compatible" content="IE=edge"/><title>Pulsar proxy · Apache Pulsar</title><meta name="viewport" content="width=device-width, initial-scale=1.0"/><meta name="generator" content="Docusaurus"/><meta name="description" content="Pulsar proxy is an optional gateway. Pulsar proxy is used when direct connections between clients and Pulsar brokers are either infeasible or undesirable. For example, when you run Pulsar in a cloud environment or on [Kubernetes](https://kubernetes.io) or an analogous platform, you can run Pulsar proxy."/><meta name="docsearch:version" content="2.9.2"/><meta name="docsearch:language" content="en"/><meta property="og:title" content="Pulsar proxy · Apache Pulsar"/><meta property="og:type" content="website"/><meta property="og:url" content="https://pulsar.apache.org/"/><meta property="og:description" content="Pulsar proxy is an optional gateway. Pulsar proxy is used when direct connections between clients and Pulsar brokers are either infeasible or undesirable. For example, when you run Pulsar in a cloud environment or on [Kubernetes](https://kubernetes.io) or an analogous platform, you can run Pulsar proxy."/><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>2.9.2</h3></a><div class="navigationWrapper navigationSlider"><nav class="slidingNav"><ul class="nav-site nav-site-internal"><li class="siteNavGroupActive"><a href="/docs/en/2.9.2/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/2.9.2/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/2.9.2/administration-proxy">日本語</a></li><li><a href="/docs/fr/2.9.2/administration-proxy">Français</a></li><li><a href="/docs/ko/2.9.2/administration-proxy">한국어</a></li><li><a href="/docs/zh-CN/2.9.2/administration-proxy">中文</a></li><li><a href="/docs/zh-TW/2.9.2/administration-proxy">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/2.9.2/concepts-overview">Overview</a></li><li class="navListItem"><a class="navItem" href="/docs/en/2.9.2/concepts-messaging">Messaging</a></li><li class="navListItem"><a class="navItem" href="/docs/en/2.9.2/concepts-architecture-overview">Architecture</a></li><li class="navListItem"><a class="navItem" href="/docs/en/2.9.2/concepts-clients">Clients</a></li><li class="navListItem"><a class="navItem" href="/docs/en/2.9.2/concepts-replication">Geo Replication</a></li><li class="navListItem"><a class="navItem" href="/docs/en/2.9.2/concepts-multi-tenancy">Multi Tenancy</a></li><li class="navListItem"><a class="navItem" href="/docs/en/2.9.2/concepts-authentication">Authentication and Authorization</a></li><li class="navListItem"><a class="navItem" href="/docs/en/2.9.2/concepts-topic-compaction">Topic Compaction</a></li><li class="navListItem"><a class="navItem" href="/docs/en/2.9.2/concepts-proxy-sni-routing">Proxy support with SNI routing</a></li><li class="navListItem"><a class="navItem" href="/docs/en/2.9.2/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/2.9.2/schema-get-started">Get started</a></li><li class="navListItem"><a class="navItem" href="/docs/en/2.9.2/schema-understand">Understand schema</a></li><li class="navListItem"><a class="navItem" href="/docs/en/2.9.2/schema-evolution-compatibility">Schema evolution and compatibility</a></li><li class="navListItem"><a class="navItem" href="/docs/en/2.9.2/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" 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href="/docs/en/2.9.2/helm-prepare">Prepare</a></li><li class="navListItem"><a class="navItem" href="/docs/en/2.9.2/helm-install">Install</a></li><li class="navListItem"><a class="navItem" href="/docs/en/2.9.2/helm-deploy">Deployment</a></li><li class="navListItem"><a class="navItem" href="/docs/en/2.9.2/helm-upgrade">Upgrade</a></li><li class="navListItem"><a class="navItem" href="/docs/en/2.9.2/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/2.9.2/deploy-aws">Amazon Web Services</a></li><li class="navListItem"><a class="navItem" href="/docs/en/2.9.2/deploy-kubernetes">Kubernetes</a></li><li class="navListItem"><a class="navItem" href="/docs/en/2.9.2/deploy-bare-metal">Bare metal</a></li><li class="navListItem"><a class="navItem" href="/docs/en/2.9.2/deploy-bare-metal-multi-cluster">Bare metal multi-cluster</a></li><li class="navListItem"><a 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class="navItem" href="/docs/en/2.9.2/administration-upgrade">Upgrade</a></li><li class="navListItem"><a class="navItem" href="/docs/en/2.9.2/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/2.9.2/security-overview">Overview</a></li><li class="navListItem"><a class="navItem" href="/docs/en/2.9.2/security-tls-transport">Transport Encryption using TLS</a></li><li class="navListItem"><a class="navItem" href="/docs/en/2.9.2/security-tls-authentication">Authentication using TLS</a></li><li class="navListItem"><a class="navItem" href="/docs/en/2.9.2/security-tls-keystore">Using TLS with KeyStore configure</a></li><li class="navListItem"><a class="navItem" href="/docs/en/2.9.2/security-jwt">Authentication using JWT</a></li><li class="navListItem"><a class="navItem" href="/docs/en/2.9.2/security-athenz">Authentication using Athenz</a></li><li class="navListItem"><a class="navItem" href="/docs/en/2.9.2/security-kerberos">Authentication using Kerberos</a></li><li class="navListItem"><a class="navItem" href="/docs/en/2.9.2/security-oauth2">Authentication using OAuth 2.0 access tokens</a></li><li class="navListItem"><a class="navItem" href="/docs/en/2.9.2/security-authorization">Authorization and ACLs</a></li><li class="navListItem"><a class="navItem" href="/docs/en/2.9.2/security-encryption">End-to-End Encryption</a></li><li class="navListItem"><a class="navItem" href="/docs/en/2.9.2/security-extending">Extending</a></li><li class="navListItem"><a class="navItem" href="/docs/en/2.9.2/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/2.9.2/performance-pulsar-perf">Pulsar Perf</a></li></ul></div><div class="navGroup"><h3 class="navGroupCategoryTitle">Client 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href="/docs/en/2.9.2/admin-api-overview">Overview</a></li><li class="navListItem"><a class="navItem" href="/docs/en/2.9.2/admin-api-clusters">Clusters</a></li><li class="navListItem"><a class="navItem" href="/docs/en/2.9.2/admin-api-tenants">Tenants</a></li><li class="navListItem"><a class="navItem" href="/docs/en/2.9.2/admin-api-brokers">Brokers</a></li><li class="navListItem"><a class="navItem" href="/docs/en/2.9.2/admin-api-namespaces">Namespaces</a></li><li class="navListItem"><a class="navItem" href="/docs/en/2.9.2/admin-api-permissions">Permissions</a></li><li class="navListItem"><a class="navItem" href="/docs/en/2.9.2/admin-api-topics">Topics</a></li><li class="navListItem"><a class="navItem" href="/docs/en/2.9.2/admin-api-functions">Functions</a></li><li class="navListItem"><a class="navItem" href="/docs/en/2.9.2/admin-api-packages">Packages</a></li></ul></div><div class="navGroup"><h3 class="navGroupCategoryTitle">Adaptors</h3><ul class=""><li class="navListItem"><a 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<h2><a class="anchor" aria-hidden="true" id="configure-the-proxy"></a><a href="#configure-the-proxy" 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>Configure the proxy</h2>
<p>Before using the proxy, you need to configure it with the brokers addresses in the cluster. You can configure the proxy to connect directly to service discovery, or specify a broker URL in the configuration.</p>
<h3><a class="anchor" aria-hidden="true" id="use-service-discovery"></a><a href="#use-service-discovery" 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>Use service discovery</h3>
<p>Pulsar uses <a href="https://zookeeper.apache.org">ZooKeeper</a> for service discovery. To connect the proxy to ZooKeeper, specify the following in <code>conf/proxy.conf</code>.</p>
<pre><code class="hljs css language-properties"><span class="hljs-attr">zookeeperServers</span>=<span class="hljs-string">zk-0,zk-1,zk-2</span>
<span class="hljs-attr">configurationStoreServers</span>=<span class="hljs-string">zk-0:2184,zk-remote:2184</span>
</code></pre>
<blockquote>
<p>To use service discovery, you need to open the network ACLs, so the proxy can connects to the ZooKeeper nodes through the ZooKeeper client port (port <code>2181</code>) and the configuration store client port (port <code>2184</code>).</p>
</blockquote>
<blockquote>
<p>However, it is not secure to use service discovery. Because if the network ACL is open, when someone compromises a proxy, they have full access to ZooKeeper.</p>
</blockquote>
<h3><a class="anchor" aria-hidden="true" id="use-broker-urls"></a><a href="#use-broker-urls" 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>Use broker URLs</h3>
<p>It is more secure to specify a URL to connect to the brokers.</p>
<p>Proxy authorization requires access to ZooKeeper, so if you use these broker URLs to connect to the brokers, you need to disable authorization at the Proxy level. Brokers still authorize requests after the proxy forwards them.</p>
<p>You can configure the broker URLs in <code>conf/proxy.conf</code> as follows.</p>
<pre><code class="hljs css language-properties"><span class="hljs-attr">brokerServiceURL</span>=<span class="hljs-string">pulsar://brokers.example.com:6650</span>
<span class="hljs-attr">brokerWebServiceURL</span>=<span class="hljs-string">http://brokers.example.com:8080</span>
<span class="hljs-attr">functionWorkerWebServiceURL</span>=<span class="hljs-string">http://function-workers.example.com:8080</span>
</code></pre>
<p>If you use TLS, configure the broker URLs in the following way:</p>
<pre><code class="hljs css language-properties"><span class="hljs-attr">brokerServiceURLTLS</span>=<span class="hljs-string">pulsar+ssl://brokers.example.com:6651</span>
<span class="hljs-attr">brokerWebServiceURLTLS</span>=<span class="hljs-string">https://brokers.example.com:8443</span>
<span class="hljs-attr">functionWorkerWebServiceURL</span>=<span class="hljs-string">https://function-workers.example.com:8443</span>
</code></pre>
<p>The hostname in the URLs provided should be a DNS entry which points to multiple brokers or a virtual IP address, which is backed by multiple broker IP addresses, so that the proxy does not lose connectivity to Pulsar cluster if a single broker becomes unavailable.</p>
<p>The ports to connect to the brokers (6650 and 8080, or in the case of TLS, 6651 and 8443) should be open in the network ACLs.</p>
<p>Note that if you do not use functions, you do not need to configure <code>functionWorkerWebServiceURL</code>.</p>
<h2><a class="anchor" aria-hidden="true" id="start-the-proxy"></a><a href="#start-the-proxy" 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>Start the proxy</h2>
<p>To start the proxy:</p>
<pre><code class="hljs css language-bash">$ <span class="hljs-built_in">cd</span> /path/to/pulsar/directory
$ bin/pulsar proxy
</code></pre>
<blockquote>
<p>You can run multiple instances of the Pulsar proxy in a cluster.</p>
</blockquote>
<h2><a class="anchor" aria-hidden="true" id="stop-the-proxy"></a><a href="#stop-the-proxy" 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>Stop the proxy</h2>
<p>Pulsar proxy runs in the foreground by default. To stop the proxy, simply stop the process in which the proxy is running.</p>
<h2><a class="anchor" aria-hidden="true" id="proxy-frontends"></a><a href="#proxy-frontends" 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>Proxy frontends</h2>
<p>You can run Pulsar proxy behind some kind of load-distributing frontend, such as an <a href="https://www.digitalocean.com/community/tutorials/an-introduction-to-haproxy-and-load-balancing-concepts">HAProxy</a> load balancer.</p>
<h2><a class="anchor" aria-hidden="true" id="use-pulsar-clients-with-the-proxy"></a><a href="#use-pulsar-clients-with-the-proxy" 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>Use Pulsar clients with the proxy</h2>
<p>Once your Pulsar proxy is up and running, preferably behind a load-distributing <a href="#proxy-frontends">frontend</a>, clients can connect to the proxy via whichever address that the frontend uses. If the address is the DNS address <code>pulsar.cluster.default</code>, for example, the connection URL for clients is <code>pulsar://pulsar.cluster.default:6650</code>.</p>
<p>For more information on Proxy configuration, refer to <a href="/docs/en/2.9.2/reference-configuration#pulsar-proxy">Pulsar proxy</a>.</p>
</span></div></article></div><div class="docs-prevnext"><a class="docs-prev button" href="/docs/en/2.9.2/administration-load-balance"><span class="arrow-prev">← </span><span>Load balance</span></a><a class="docs-next button" href="/docs/en/2.9.2/administration-upgrade"><span>Upgrade</span><span class="arrow-next"> →</span></a></div></div></div><nav class="onPageNav"><ul class="toc-headings"><li><a href="#configure-the-proxy">Configure the proxy</a><ul class="toc-headings"><li><a href="#use-service-discovery">Use service discovery</a></li><li><a href="#use-broker-urls">Use broker URLs</a></li></ul></li><li><a href="#start-the-proxy">Start the proxy</a></li><li><a href="#stop-the-proxy">Stop the proxy</a></li><li><a href="#proxy-frontends">Proxy frontends</a></li><li><a href="#use-pulsar-clients-with-the-proxy">Use Pulsar clients with the proxy</a></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>
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