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tocCollapsibleButton_TO0P">On this page</button></div><div class="theme-doc-markdown markdown"><header><h1>Run function workers separately</h1></header><p>The following diagram illustrates how function workers run as a separate process in separate machines.</p><p><img loading="lazy" alt="Function workers run separately in Pulsar" src="/assets/images/function-workers-separated-67f57c127c07431c91ef54e0632de4d4.svg" width="1300" height="543" class="img_ev3q"></p><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>The <code>Service URLs</code> in the illustration represent Pulsar service URLs that Pulsar client and Pulsar admin use to connect to a Pulsar cluster.</p></div></div><p>To set up function workers that run separately, complete the following steps:</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="step-1-configure-function-workers-to-run-separately">Step 1: Configure function workers to run separately<a href="#step-1-configure-function-workers-to-run-separately" class="hash-link" aria-label="Direct link to Step 1: Configure function workers to run separately" title="Direct link to Step 1: Configure function workers to run separately"></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>To run function workers separately, you need to keep <code>functionsWorkerEnabled</code> as its default value (<code>false</code>) in the <code>conf/broker.conf</code> file.</p></div></div><h3 class="anchor anchorWithStickyNavbar_LWe7" id="configure-worker-parameters">Configure worker parameters<a href="#configure-worker-parameters" class="hash-link" aria-label="Direct link to Configure worker parameters" title="Direct link to Configure worker parameters"></a></h3><p>Configure the required parameters for workers in the <code>conf/functions_worker.yml</code> file.</p><ul><li><code>workerId</code>: The identity of a worker node, which is unique across clusters. The type is string.</li><li><code>workerHostname</code>: The hostname of the worker node.</li><li><code>workerPort</code>: The port that the worker server listens on. Keep it as default if you don't customize it. Set it to <code>null</code> to disable the plaintext port.</li><li><code>workerPortTls</code>: The TLS port that the worker server listens on. Keep it as default if you don't customize it. For more information about TLS encryption settings, refer to <a href="#enable-tls-encryption">settings</a>.</li></ul><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 accessing function workers to manage functions, the <code>pulsar-admin</code> CLI or any of the clients should use the configured <code>workerHostname</code> and <code>workerPort</code> to generate an <code>--admin-url</code>.</p></div></div><h3 class="anchor anchorWithStickyNavbar_LWe7" id="configure-function-package-parameters">Configure function package parameters<a href="#configure-function-package-parameters" class="hash-link" aria-label="Direct link to Configure function package parameters" title="Direct link to Configure function package parameters"></a></h3><p>Configure the <code>numFunctionPackageReplicas</code> parameter in the <code>conf/functions_worker.yml</code> file. It indicates the number of replicas to store function packages.</p><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>To ensure high availability in a production deployment, set <code>numFunctionPackageReplicas</code> to equal the number of bookies. The default value <code>1</code> is only for one-node cluster deployment.</p></div></div><h3 class="anchor anchorWithStickyNavbar_LWe7" id="configure-function-metadata-parameters">Configure function metadata parameters<a href="#configure-function-metadata-parameters" class="hash-link" aria-label="Direct link to Configure function metadata parameters" title="Direct link to Configure function metadata parameters"></a></h3><p>Configure the required parameter for function metadata in the <code>conf/functions_worker.yml</code> file.</p><ul><li><code>pulsarServiceUrl</code>: The Pulsar service URL for your broker cluster.</li><li><code>pulsarWebServiceUrl</code>: The Pulsar web service URL for your broker cluster.</li><li><code>pulsarFunctionsCluster</code>: Set the value to your Pulsar cluster name (same as the <code>clusterName</code> setting in the <code>conf/broker.conf</code> file).</li></ul><p>If authentication is enabled on your broker cluster, you must configure the following authentication settings for the function workers to communicate with the brokers.</p><ul><li><code>brokerClientAuthenticationEnabled</code>: Whether to enable the broker client authentication used by function workers to talk to brokers.</li><li><code>clientAuthenticationPlugin</code>: The authentication plugin to be used by the Pulsar client used in worker service.</li><li><code>clientAuthenticationParameters</code>: The authentication parameter to be used by the Pulsar client used in worker service.</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="enable-security-settings">Enable security settings<a href="#enable-security-settings" class="hash-link" aria-label="Direct link to Enable security settings" title="Direct link to Enable security settings"></a></h3><p>When you run a function worker separately in a cluster configured with authentication, your function worker needs to communicate with the broker and authenticate incoming requests. Thus you need to configure the properties that the broker requires for authentication and authorization.</p><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>You must configure both the function worker authentication and authorization for the server to authenticate incoming requests and configure the client to be authenticated to communicate with the broker.</p></div></div><p>For example, if you use token authentication, you need to configure the following properties in the <code>conf/function-worker.yml</code> file.</p><div class="language-yaml codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#F8F8F2;--prism-background-color:#282A36"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-yaml codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#F8F8F2"><span class="token key atrule">brokerClientAuthenticationPlugin</span><span class="token punctuation" style="color:rgb(248, 248, 242)">:</span><span class="token plain"> org.apache.pulsar.client.impl.auth.AuthenticationToken</span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"></span><span class="token key atrule">brokerClientAuthenticationParameters</span><span class="token punctuation" style="color:rgb(248, 248, 242)">:</span><span class="token plain"> file</span><span class="token punctuation" style="color:rgb(248, 248, 242)">:</span><span class="token plain">///etc/pulsar/token/admin</span><span class="token punctuation" style="color:rgb(248, 248, 242)">-</span><span class="token plain">token.txt</span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"></span><span class="token key atrule">configurationMetadataStoreUrl</span><span class="token punctuation" style="color:rgb(248, 248, 242)">:</span><span class="token plain"> zk</span><span class="token punctuation" style="color:rgb(248, 248, 242)">:</span><span class="token plain">zookeeper</span><span class="token punctuation" style="color:rgb(248, 248, 242)">-</span><span class="token plain">cluster</span><span class="token punctuation" style="color:rgb(248, 248, 242)">:</span><span class="token number">2181</span><span class="token plain"> </span><span class="token comment" style="color:rgb(98, 114, 164)"># auth requires a connection to zookeeper</span><span class="token plain"></span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"></span><span class="token key atrule">authenticationProviders</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"> </span><span class="token punctuation" style="color:rgb(248, 248, 242)">-</span><span class="token plain"> </span><span class="token string" style="color:rgb(255, 121, 198)">"org.apache.pulsar.broker.authentication.AuthenticationProviderToken"</span><span class="token plain"></span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"></span><span class="token key atrule">authorizationEnabled</span><span class="token punctuation" style="color:rgb(248, 248, 242)">:</span><span class="token plain"> </span><span class="token boolean important">true</span><span class="token plain"></span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"></span><span class="token key atrule">authenticationEnabled</span><span class="token punctuation" style="color:rgb(248, 248, 242)">:</span><span class="token plain"> </span><span class="token boolean important">true</span><span class="token plain"></span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"></span><span class="token key atrule">superUserRoles</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"> </span><span class="token punctuation" style="color:rgb(248, 248, 242)">-</span><span class="token plain"> superuser</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"> proxy</span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"></span><span class="token key atrule">properties</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"> </span><span class="token key atrule">tokenSecretKey</span><span class="token punctuation" style="color:rgb(248, 248, 242)">:</span><span class="token plain"> file</span><span class="token punctuation" style="color:rgb(248, 248, 242)">:</span><span class="token plain">///etc/pulsar/jwt/secret </span><span class="token comment" style="color:rgb(98, 114, 164)"># if using a secret token, key file must be DER-encoded</span><span class="token plain"></span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> </span><span class="token key atrule">tokenPublicKey</span><span class="token punctuation" style="color:rgb(248, 248, 242)">:</span><span class="token plain"> file</span><span class="token punctuation" style="color:rgb(248, 248, 242)">:</span><span class="token plain">///etc/pulsar/jwt/public.key </span><span class="token comment" style="color:rgb(98, 114, 164)"># if using public/private key tokens, key file must be DER-encoded</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 enable the following security settings on function workers.</p><ul><li><a href="#enable-tls-encryption">Enable TLS encryption</a></li><li><a href="#enable-authentication-providers">Enable authentication providers</a></li><li><a href="#enable-authorization-providers">Enable authorization providers</a></li><li><a href="/docs/3.2.x/functions-deploy-cluster-encryption/">Enable end-to-end encryption</a></li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="enable-tls-encryption">Enable TLS encryption<a href="#enable-tls-encryption" class="hash-link" aria-label="Direct link to Enable TLS encryption" title="Direct link to Enable TLS encryption"></a></h4><p>To enable TLS encryption, configure the following settings.</p><div class="language-yaml codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#F8F8F2;--prism-background-color:#282A36"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-yaml codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#F8F8F2"><span class="token key atrule">useTLS</span><span class="token punctuation" style="color:rgb(248, 248, 242)">:</span><span class="token plain"> </span><span class="token boolean important">true</span><span class="token plain"></span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"></span><span class="token key atrule">pulsarServiceUrl</span><span class="token punctuation" style="color:rgb(248, 248, 242)">:</span><span class="token plain"> pulsar+ssl</span><span class="token punctuation" style="color:rgb(248, 248, 242)">:</span><span class="token plain">//localhost</span><span class="token punctuation" style="color:rgb(248, 248, 242)">:</span><span class="token plain">6651/</span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"></span><span class="token key atrule">pulsarWebServiceUrl</span><span class="token punctuation" style="color:rgb(248, 248, 242)">:</span><span class="token plain"> https</span><span class="token punctuation" style="color:rgb(248, 248, 242)">:</span><span class="token plain">//localhost</span><span class="token punctuation" style="color:rgb(248, 248, 242)">:</span><span class="token number">8443</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 key atrule">tlsEnabled</span><span class="token punctuation" style="color:rgb(248, 248, 242)">:</span><span class="token plain"> </span><span class="token boolean important">true</span><span class="token plain"></span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"></span><span class="token key atrule">tlsCertificateFilePath</span><span class="token punctuation" style="color:rgb(248, 248, 242)">:</span><span class="token plain"> /path/to/functions</span><span class="token punctuation" style="color:rgb(248, 248, 242)">-</span><span class="token plain">worker.cert.pem</span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"></span><span class="token key atrule">tlsKeyFilePath</span><span class="token punctuation" style="color:rgb(248, 248, 242)">:</span><span class="token plain"> /path/to/functions</span><span class="token punctuation" style="color:rgb(248, 248, 242)">-</span><span class="token plain">worker.key</span><span class="token punctuation" style="color:rgb(248, 248, 242)">-</span><span class="token plain">pk8.pem</span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"></span><span class="token key atrule">tlsTrustCertsFilePath</span><span class="token punctuation" style="color:rgb(248, 248, 242)">:</span><span class="token plain"> /path/to/ca.cert.pem</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">// The path to trusted certificates used by the Pulsar client to authenticate with Pulsar brokers</span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"></span><span class="token key atrule">brokerClientTrustCertsFilePath</span><span class="token punctuation" style="color:rgb(248, 248, 242)">:</span><span class="token plain"> /path/to/ca.cert.pem</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 on TLS encryption, refer to <a href="/docs/3.2.x/security-tls-transport/">Transport Encryption using TLS</a>.</p><h4 class="anchor anchorWithStickyNavbar_LWe7" id="enable-authentication-providers">Enable authentication providers<a href="#enable-authentication-providers" class="hash-link" aria-label="Direct link to Enable authentication providers" title="Direct link to Enable authentication providers"></a></h4><p>To enable authentication providers on function workers, substitute the <code>authenticationProviders</code> parameter with the providers you want to enable.</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)">authenticationEnabled</span><span class="token punctuation" style="color:rgb(248, 248, 242)">:</span><span class="token plain"> </span><span class="token value attr-value">true</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)">authenticationProviders</span><span class="token punctuation" style="color:rgb(248, 248, 242)">:</span><span class="token plain"> </span><span class="token value attr-value">[provider1, provider2]</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 <a href="/docs/3.2.x/security-tls-authentication/">mTLS authentication</a> provider, follow the example below to add the required settings.</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)">brokerClientAuthenticationPlugin</span><span class="token punctuation" style="color:rgb(248, 248, 242)">:</span><span class="token plain"> </span><span class="token value attr-value">org.apache.pulsar.client.impl.auth.AuthenticationTls</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)">brokerClientAuthenticationParameters</span><span class="token punctuation" style="color:rgb(248, 248, 242)">:</span><span class="token plain"> </span><span class="token value attr-value">tlsCertFile:/path/to/admin.cert.pem,tlsKeyFile:/path/to/admin.key-pk8.pem</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 key attr-name" style="color:rgb(241, 250, 140)">authenticationEnabled</span><span class="token punctuation" style="color:rgb(248, 248, 242)">:</span><span class="token plain"> </span><span class="token value attr-value">true</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)">authenticationProviders</span><span class="token punctuation" style="color:rgb(248, 248, 242)">:</span><span class="token plain"> </span><span class="token value attr-value">['org.apache.pulsar.broker.authentication.AuthenticationProviderTls']</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 SASL authentication provider, add <code>saslJaasClientAllowedIds</code> and <code>saslJaasServerSectionName</code> under <code>properties</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)">properties</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"></span><span class="token key attr-name" style="color:rgb(241, 250, 140)"> saslJaasClientAllowedIds</span><span class="token punctuation" style="color:rgb(248, 248, 242)">:</span><span class="token plain"> </span><span class="token value attr-value">.*pulsar.*</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)"> saslJaasServerSectionName</span><span class="token punctuation" style="color:rgb(248, 248, 242)">:</span><span class="token plain"> </span><span class="token value attr-value">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>For <a href="/docs/3.2.x/security-jwt/">token authentication</a> provider, add the required settings under <code>properties</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)">properties</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"></span><span class="token key attr-name" style="color:rgb(241, 250, 140)"> tokenSecretKey</span><span class="token punctuation" style="color:rgb(248, 248, 242)">:</span><span class="token plain"> </span><span class="token value attr-value">file://my/secret.key</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)"> # If using public/private</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)"> # tokenPublicKey: file://path/to/public.key</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>Key files must be DER (Distinguished Encoding Rules)-encoded.</p></div></div><h4 class="anchor anchorWithStickyNavbar_LWe7" id="enable-authorization-providers">Enable authorization providers<a href="#enable-authorization-providers" class="hash-link" aria-label="Direct link to Enable authorization providers" title="Direct link to Enable authorization providers"></a></h4><p>To enable authorization on function workers, complete the following steps.</p><ol><li><p>Configure <code>authorizationEnabled</code>, <code>authorizationProvider</code> and <code>configurationMetadataStoreUrl</code> in the <code>functions_worker.yml</code> file. The authentication provider connects to <code>configurationMetadataStoreUrl</code> to receive namespace policies.</p><div class="language-yaml codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#F8F8F2;--prism-background-color:#282A36"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-yaml codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#F8F8F2"><span class="token key atrule">authorizationEnabled</span><span class="token punctuation" style="color:rgb(248, 248, 242)">:</span><span class="token plain"> </span><span class="token boolean important">true</span><span class="token plain"></span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"></span><span class="token key atrule">authorizationProvider</span><span class="token punctuation" style="color:rgb(248, 248, 242)">:</span><span class="token plain"> org.apache.pulsar.broker.authorization.PulsarAuthorizationProvider</span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"></span><span class="token key atrule">configurationMetadataStoreUrl</span><span class="token punctuation" style="color:rgb(248, 248, 242)">:</span><span class="token plain"> <meta</span><span class="token punctuation" style="color:rgb(248, 248, 242)">-</span><span class="token plain">type</span><span class="token punctuation" style="color:rgb(248, 248, 242)">></span><span class="token punctuation" style="color:rgb(248, 248, 242)">:</span><span class="token plain"><configuration</span><span class="token punctuation" style="color:rgb(248, 248, 242)">-</span><span class="token plain">metadata</span><span class="token punctuation" style="color:rgb(248, 248, 242)">-</span><span class="token plain">store</span><span class="token punctuation" style="color:rgb(248, 248, 242)">-</span><span class="token plain">url</span><span class="token punctuation" style="color:rgb(248, 248, 242)">></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>Configure a list of superuser roles. The superuser roles can access any admin API. The following configuration is an example.</p><div class="language-yaml codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#F8F8F2;--prism-background-color:#282A36"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-yaml codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#F8F8F2"><span class="token key atrule">superUserRoles</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"> </span><span class="token punctuation" style="color:rgb(248, 248, 242)">-</span><span class="token plain"> role1</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"> role2</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"> role3</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><h3 class="anchor anchorWithStickyNavbar_LWe7" id="configure-bookkeeper-authentication">Configure BookKeeper authentication<a href="#configure-bookkeeper-authentication" class="hash-link" aria-label="Direct link to Configure BookKeeper authentication" title="Direct link to Configure BookKeeper authentication"></a></h3><p>If authentication is enabled on the BookKeeper cluster, you need to configure the following BookKeeper authentication settings for your function workers.</p><ul><li><code>bookkeeperClientAuthenticationPlugin</code>: the authentication plugin name of BookKeeper client.</li><li><code>bookkeeperClientAuthenticationParametersName</code>: the authentication plugin parameters of BookKeeper client, including names and values.</li><li><code>bookkeeperClientAuthenticationParameters</code>: the authentication plugin parameters of BookKeeper client.</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="step-2-start-function-workers">Step 2: Start function workers<a href="#step-2-start-function-workers" class="hash-link" aria-label="Direct link to Step 2: Start function workers" title="Direct link to Step 2: Start function workers"></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>Before starting function workers, make sure <a href="/docs/3.2.x/functions-runtime/">function runtime</a> is configured.</p></div></div><ul><li><p>You can start a function worker in the background by using the <a href="/docs/3.2.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 functions-worker</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>To start a function worker in the foreground, you can use the <a href="/reference/#/3.2.x/pulsar-admin/" target="_blank" rel="noopener noreferrer"><code>pulsar-admin</code></a> CLI 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 plain">bin/pulsar functions-worker</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><h2 class="anchor anchorWithStickyNavbar_LWe7" id="step-3-configure-proxies-for-standalone-function-workers">Step 3: Configure proxies for standalone function workers<a href="#step-3-configure-proxies-for-standalone-function-workers" class="hash-link" aria-label="Direct link to Step 3: Configure proxies for standalone function workers" title="Direct link to Step 3: Configure proxies for standalone function workers"></a></h2><p>When you are running function workers in a separate cluster, the admin rest endpoints are split into two clusters as shown in the following figure. The <code>functions</code>, <code>function-worker</code>, <code>source</code>, and <code>sink</code> endpoints are now served by the worker cluster, while all the other remaining endpoints are served by the broker cluster. This requires you to use the right service URL accordingly in the <code>pulsar-admin</code> CLI. To address this inconvenience, you can start a proxy cluster that serves as the central entry point of the admin service for routing admin rest requests.</p><p><img loading="lazy" alt="assets/functions-worker-separated-proxy.svg" src="/assets/images/function-workers-separated-with-proxy-026953ca9af6f74aafbe947fd6f47796.svg" width="1300" height="851" class="img_ev3q"></p><div class="theme-admonition theme-admonition-tip alert alert--success admonition_LlT9"><div class="admonitionHeading_tbUL"><span class="admonitionIcon_kALy"><svg viewBox="0 0 12 16"><path fill-rule="evenodd" d="M6.5 0C3.48 0 1 2.19 1 5c0 .92.55 2.25 1 3 1.34 2.25 1.78 2.78 2 4v1h5v-1c.22-1.22.66-1.75 2-4 .45-.75 1-2.08 1-3 0-2.81-2.48-5-5.5-5zm3.64 7.48c-.25.44-.47.8-.67 1.11-.86 1.41-1.25 2.06-1.45 3.23-.02.05-.02.11-.02.17H5c0-.06 0-.13-.02-.17-.2-1.17-.59-1.83-1.45-3.23-.2-.31-.42-.67-.67-1.11C2.44 6.78 2 5.65 2 5c0-2.2 2.02-4 4.5-4 1.22 0 2.36.42 3.22 1.19C10.55 2.94 11 3.94 11 5c0 .66-.44 1.78-.86 2.48zM4 14h5c-.23 1.14-1.3 2-2.5 2s-2.27-.86-2.5-2z"></path></svg></span>tip</div><div class="admonitionContent_S0QG"><p>If you haven't set up a proxy cluster yet, follow the <a href="/docs/3.2.x/administration-proxy/">instructions</a> to deploy one.</p></div></div><p>To enable a proxy for routing function-related admin requests to function workers, you can edit the <code>conf/proxy.conf</code> file to modify the following settings:</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">functionWorkerWebServiceURL=<pulsar-functions-worker-web-service-url></span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain">functionWorkerWebServiceURLTLS=<pulsar-functions-worker-web-service-url></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 class="theme-doc-footer-edit-meta-row row"><div class="col"><a href="https://github.com/apache/pulsar-site/edit/main/versioned_docs/version-3.2.x/functions-worker-run-separately.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" 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href="https://github.com/apache/pulsar/discussions/new?category=q-a">🛟 Get support</a></div></div><ul class="table-of-contents table-of-contents__left-border"><li><a href="#step-1-configure-function-workers-to-run-separately" class="table-of-contents__link toc-highlight">Step 1: Configure function workers to run separately</a><ul><li><a href="#configure-worker-parameters" class="table-of-contents__link toc-highlight">Configure worker parameters</a></li><li><a href="#configure-function-package-parameters" class="table-of-contents__link toc-highlight">Configure function package parameters</a></li><li><a href="#configure-function-metadata-parameters" class="table-of-contents__link toc-highlight">Configure function metadata parameters</a></li><li><a href="#enable-security-settings" class="table-of-contents__link toc-highlight">Enable security settings</a></li><li><a href="#configure-bookkeeper-authentication" class="table-of-contents__link toc-highlight">Configure BookKeeper 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