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<p>This document describes the Druid security model that extensions use to enable user authentication and authorization services to Druid.</p>
<h2><a class="anchor" aria-hidden="true" id="authentication-and-authorization-model"></a><a href="#authentication-and-authorization-model" 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>Authentication and authorization model</h2>
<p>At the center of the Druid user authentication and authorization model are <em>resources</em> and <em>actions</em>. A resource is something that authenticated users are trying to access or modify. An action is something that users are trying to do.</p>
<p>Druid uses the following resource types:</p>
<ul>
<li>DATASOURCE – Each Druid table (i.e., <code>tables</code> in the <code>druid</code> schema in SQL) is a resource.</li>
<li>CONFIG – Configuration resources exposed by the cluster components.</li>
<li>STATE – Cluster-wide state resources.</li>
<li>SYSTEM_TABLE – when the Broker property <code>druid.sql.planner.authorizeSystemTablesDirectly</code> is true, then Druid uses this resource type to authorize the system tables in the <code>sys</code> schema in SQL.</li>
</ul>
<p>For specific resources associated with the types, see the endpoint list below and corresponding descriptions in <a href="/docs/0.23.0/operations/api-reference.html">API Reference</a>.</p>
<p>There are two actions:</p>
<ul>
<li>READ – Used for read-only operations.</li>
<li>WRITE – Used for operations that are not read-only.</li>
</ul>
<p>In practice, most deployments will only need to define two classes of users:</p>
<ul>
<li>Administrators, who have WRITE action permissions on all resource types. These users will add datasources and administer the system.</li>
<li>Data users, who only need READ access to DATASOURCE. These users should access Query APIs only through an API gateway. Other APIs and permissions include functionality that should be limited to server admins.</li>
</ul>
<p>It is important to note that WRITE access to DATASOURCE grants a user broad access. For instance, such users will have access to the Druid file system, S3 buckets, and credentials, among other things. As such, the ability to add and manage datasources should be allocated selectively to administrators.</p>
<p><code>WRITE</code> permission on a resource does not include <code>READ</code> permission. If a user requires both <code>READ</code> and <code>WRITE</code> permissions on a resource, you must grant them both explicitly. For instance, a user with only <code>DATASOURCE READ</code> permission
might have access to an API or a system schema record that a user with <code>DATASOURCE WRITE</code> permission would not have access to.</p>
<h2><a class="anchor" aria-hidden="true" id="default-user-accounts"></a><a href="#default-user-accounts" 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>Default user accounts</h2>
<h3><a class="anchor" aria-hidden="true" id="authenticator"></a><a href="#authenticator" 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>Authenticator</h3>
<p>If <code>druid.auth.authenticator.&lt;authenticator-name&gt;.initialAdminPassword</code> is set, a default admin user named &quot;admin&quot; will be created, with the specified initial password. If this configuration is omitted, the &quot;admin&quot; user will not be created.</p>
<p>If <code>druid.auth.authenticator.&lt;authenticator-name&gt;.initialInternalClientPassword</code> is set, a default internal system user named &quot;druid_system&quot; will be created, with the specified initial password. If this configuration is omitted, the &quot;druid_system&quot; user will not be created.</p>
<h3><a class="anchor" aria-hidden="true" id="authorizer"></a><a href="#authorizer" 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>Authorizer</h3>
<p>Each Authorizer will always have a default &quot;admin&quot; and &quot;druid_system&quot; user with full privileges.</p>
<h2><a class="anchor" aria-hidden="true" id="defining-permissions"></a><a href="#defining-permissions" 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>Defining permissions</h2>
<p>There are two action types in Druid: READ and WRITE</p>
<p>Druid uses the following resource types: <code>DATASOURCE</code>, <code>CONFIG</code>, <code>STATE</code>, and <code>SYSTEM_TABLE</code>.</p>
<h3><a class="anchor" aria-hidden="true" id="datasource"></a><a href="#datasource" 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><code>DATASOURCE</code></h3>
<p>Resource names for this type are datasource names. Specifying a datasource permission allows the administrator to grant users access to specific datasources.</p>
<h3><a class="anchor" aria-hidden="true" id="config"></a><a href="#config" 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><code>CONFIG</code></h3>
<p>There are two possible resource names for the &quot;CONFIG&quot; resource type, &quot;CONFIG&quot; and &quot;security&quot;. Granting a user access to CONFIG resources allows them to access the following endpoints.</p>
<p>&quot;CONFIG&quot; resource name covers the following endpoints:</p>
<table>
<thead>
<tr><th>Endpoint</th><th>Process Type</th></tr>
</thead>
<tbody>
<tr><td><code>/druid/coordinator/v1/config</code></td><td>coordinator</td></tr>
<tr><td><code>/druid/indexer/v1/worker</code></td><td>overlord</td></tr>
<tr><td><code>/druid/indexer/v1/worker/history</code></td><td>overlord</td></tr>
<tr><td><code>/druid/worker/v1/disable</code></td><td>middleManager</td></tr>
<tr><td><code>/druid/worker/v1/enable</code></td><td>middleManager</td></tr>
</tbody>
</table>
<p>&quot;security&quot; resource name covers the following endpoint:</p>
<table>
<thead>
<tr><th>Endpoint</th><th>Process Type</th></tr>
</thead>
<tbody>
<tr><td><code>/druid-ext/basic-security/authentication</code></td><td>coordinator</td></tr>
<tr><td><code>/druid-ext/basic-security/authorization</code></td><td>coordinator</td></tr>
</tbody>
</table>
<h3><a class="anchor" aria-hidden="true" id="state"></a><a href="#state" 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><code>STATE</code></h3>
<p>There is only one possible resource name for the &quot;STATE&quot; config resource type, &quot;STATE&quot;. Granting a user access to STATE resources allows them to access the following endpoints.</p>
<p>&quot;STATE&quot; resource name covers the following endpoints:</p>
<table>
<thead>
<tr><th>Endpoint</th><th>Process Type</th></tr>
</thead>
<tbody>
<tr><td><code>/druid/coordinator/v1</code></td><td>coordinator</td></tr>
<tr><td><code>/druid/coordinator/v1/rules</code></td><td>coordinator</td></tr>
<tr><td><code>/druid/coordinator/v1/rules/history</code></td><td>coordinator</td></tr>
<tr><td><code>/druid/coordinator/v1/servers</code></td><td>coordinator</td></tr>
<tr><td><code>/druid/coordinator/v1/tiers</code></td><td>coordinator</td></tr>
<tr><td><code>/druid/broker/v1</code></td><td>broker</td></tr>
<tr><td><code>/druid/v2/candidates</code></td><td>broker</td></tr>
<tr><td><code>/druid/indexer/v1/leader</code></td><td>overlord</td></tr>
<tr><td><code>/druid/indexer/v1/isLeader</code></td><td>overlord</td></tr>
<tr><td><code>/druid/indexer/v1/action</code></td><td>overlord</td></tr>
<tr><td><code>/druid/indexer/v1/workers</code></td><td>overlord</td></tr>
<tr><td><code>/druid/indexer/v1/scaling</code></td><td>overlord</td></tr>
<tr><td><code>/druid/worker/v1/enabled</code></td><td>middleManager</td></tr>
<tr><td><code>/druid/worker/v1/tasks</code></td><td>middleManager</td></tr>
<tr><td><code>/druid/worker/v1/task/{taskid}/shutdown</code></td><td>middleManager</td></tr>
<tr><td><code>/druid/worker/v1/task/{taskid}/log</code></td><td>middleManager</td></tr>
<tr><td><code>/druid/historical/v1</code></td><td>historical</td></tr>
<tr><td><code>/druid-internal/v1/segments/</code></td><td>historical</td></tr>
<tr><td><code>/druid-internal/v1/segments/</code></td><td>peon</td></tr>
<tr><td><code>/druid-internal/v1/segments/</code></td><td>realtime</td></tr>
<tr><td><code>/status</code></td><td>all process types</td></tr>
</tbody>
</table>
<h3><a class="anchor" aria-hidden="true" id="system_table"></a><a href="#system_table" 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><code>SYSTEM_TABLE</code></h3>
<p>Resource names for this type are system schema table names in the <code>sys</code> schema in SQL, for example <code>sys.segments</code> and <code>sys.server_segments</code>. Druid only enforces authorization for <code>SYSTEM_TABLE</code> resources when the Broker property <code>druid.sql.planner.authorizeSystemTablesDirectly</code> is true.</p>
<h3><a class="anchor" aria-hidden="true" id="http-methods"></a><a href="#http-methods" 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>HTTP methods</h3>
<p>For information on what HTTP methods are supported on a particular request endpoint, please refer to the <a href="/docs/0.23.0/operations/api-reference.html">API documentation</a>.</p>
<p>GET requires READ permission, while POST and DELETE require WRITE permission.</p>
<h3><a class="anchor" aria-hidden="true" id="sql-permissions"></a><a href="#sql-permissions" 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>SQL Permissions</h3>
<p>Queries on Druid datasources require DATASOURCE READ permissions for the specified datasource.</p>
<p>Queries on <a href="/docs/0.23.0/querying/sql-metadata-tables.html#information-schema">INFORMATION_SCHEMA tables</a> return information about datasources that the caller has DATASOURCE READ access to. Other
datasources are omitted.</p>
<p>Queries on the <a href="/docs/0.23.0/querying/sql-metadata-tables.html#system-schema">system schema tables</a> require the following permissions:</p>
<ul>
<li><code>segments</code>: Druid filters segments according to DATASOURCE READ permissions.</li>
<li><code>servers</code>: The user requires STATE READ permissions.</li>
<li><code>server_segments</code>: The user requires STATE READ permissions. Druid filters segments according to DATASOURCE READ permissions.</li>
<li><code>tasks</code>: Druid filters tasks according to DATASOURCE READ permissions.</li>
<li><code>supervisors</code>: Druid filters supervisors according to DATASOURCE READ permissions.</li>
</ul>
<p>When the Broker property <code>druid.sql.planner.authorizeSystemTablesDirectly</code> is true, users also require <code>SYSTEM_TABLE</code> authorization on a system schema table to query it.</p>
<h2><a class="anchor" aria-hidden="true" id="configuration-propagation"></a><a href="#configuration-propagation" 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>Configuration Propagation</h2>
<p>To prevent excessive load on the Coordinator, the Authenticator and Authorizer user/role Druid metadata store state is cached on each Druid process.</p>
<p>Each process will periodically poll the Coordinator for the latest Druid metadata store state, controlled by the <code>druid.auth.basic.common.pollingPeriod</code> and <code>druid.auth.basic.common.maxRandomDelay</code> properties.</p>
<p>When a configuration update occurs, the Coordinator can optionally notify each process with the updated Druid metadata store state. This behavior is controlled by the <code>enableCacheNotifications</code> and <code>cacheNotificationTimeout</code> properties on Authenticators and Authorizers.</p>
<p>Note that because of the caching, changes made to the user/role Druid metadata store may not be immediately reflected at each Druid process.</p>
</span></div></article></div><div class="docs-prevnext"><a class="docs-prev button" href="/docs/0.23.0/operations/security-overview.html"><span class="arrow-prev"></span><span>Security overview</span></a><a class="docs-next button" href="/docs/0.23.0/operations/auth-ldap.html"><span>LDAP auth</span><span class="arrow-next"></span></a></div></div></div><nav class="onPageNav"><ul class="toc-headings"><li><a href="#authentication-and-authorization-model">Authentication and authorization model</a></li><li><a href="#default-user-accounts">Default user accounts</a><ul class="toc-headings"><li><a href="#authenticator">Authenticator</a></li><li><a href="#authorizer">Authorizer</a></li></ul></li><li><a href="#defining-permissions">Defining permissions</a><ul class="toc-headings"><li><a href="#datasource"><code>DATASOURCE</code></a></li><li><a href="#config"><code>CONFIG</code></a></li><li><a href="#state"><code>STATE</code></a></li><li><a href="#system_table"><code>SYSTEM_TABLE</code></a></li><li><a href="#http-methods">HTTP methods</a></li><li><a href="#sql-permissions">SQL Permissions</a></li></ul></li><li><a href="#configuration-propagation">Configuration Propagation</a></li></ul></nav></div><footer class="nav-footer druid-footer" id="footer"><div class="container"><div class="text-center"><p><a href="/technology">Technology</a> · <a href="/use-cases">Use Cases</a> · <a href="/druid-powered">Powered by Druid</a> · <a href="/docs/0.23.0/latest">Docs</a> · <a href="/community/">Community</a> · <a href="/downloads.html">Download</a> · <a href="/faq">FAQ</a></p></div><div class="text-center"><a title="Join the user group" href="https://groups.google.com/forum/#!forum/druid-user" target="_blank"><span class="fa fa-comments"></span></a> · <a title="Follow Druid" href="https://twitter.com/druidio" target="_blank"><span class="fab fa-twitter"></span></a> · <a title="Download via Apache" href="https://www.apache.org/dyn/closer.cgi?path=/incubator/druid/{{ site.druid_versions[0].versions[0].version }}/apache-druid-{{ site.druid_versions[0].versions[0].version }}-bin.tar.gz" target="_blank"><span class="fas fa-feather"></span></a> · <a title="GitHub" href="https://github.com/apache/druid" target="_blank"><span class="fab fa-github"></span></a></div><div class="text-center license">Copyright © 2019 <a href="https://www.apache.org/" target="_blank">Apache Software Foundation</a>.<br/>Except where otherwise noted, licensed under <a rel="license" href="http://creativecommons.org/licenses/by-sa/4.0/">CC BY-SA 4.0</a>.<br/>Apache Druid, Druid, and the Druid logo are either registered trademarks or trademarks of The Apache Software Foundation in the United States and other countries.</div></div></footer></div><script type="text/javascript" src="https://cdn.jsdelivr.net/docsearch.js/1/docsearch.min.js"></script><script>
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