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<p>This page describes how to set up Druid user authentication and authorization through LDAP. The first step is to enable LDAP authentication and authorization for Druid. You then map an LDAP group to roles and assign permissions and users to roles.</p>
<h2><a class="anchor" aria-hidden="true" id="enable-ldap-in-druid"></a><a href="#enable-ldap-in-druid" 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>Enable LDAP in Druid</h2>
<p>Before starting, verify that the active directory is reachable from the Druid Master servers. Command line tools such as <code>ldapsearch</code> and <code>ldapwhoami</code>, which are included with OpenLDAP, are useful for this testing.</p>
<h3><a class="anchor" aria-hidden="true" id="check-the-connection"></a><a href="#check-the-connection" 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>Check the connection</h3>
<p>First test that the basic connection and user credential works. For example, given a user <code>uuser1@example.com</code>, try:</p>
<pre><code class="hljs css language-bash">ldapwhoami -vv -H ldap://&lt;ip_address&gt;:389  -D<span class="hljs-string">"uuser1@example.com"</span> -W
</code></pre>
<p>Enter the password associated with the user when prompted and verify that the command succeeded. If it didn't, try the following troubleshooting steps:</p>
<ul>
<li>Verify that you've used the correct port for your LDAP instance. By default, the LDAP port is 389, but double-check with your LDAP admin if unable to connect.</li>
<li>Check whether a network firewall is not preventing connections to the LDAP port.</li>
<li>Check whether LDAP clients need to be specifically whitelisted at the LDAP server to be able to reach it. If so, add the Druid Coordinator server to the AD whitelist.</li>
</ul>
<h3><a class="anchor" aria-hidden="true" id="check-the-search-criteria"></a><a href="#check-the-search-criteria" 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>Check the search criteria</h3>
<p>After verifying basic connectivity, check your search criteria. For example, the command for searching for user <code>uuser1@example.com</code> is as follows:</p>
<pre><code class="hljs css language-bash">ldapsearch -x -W -H ldap://&lt;ldap_server&gt;  -D<span class="hljs-string">"uuser1@example.com"</span> -b <span class="hljs-string">"dc=example,dc=com"</span> <span class="hljs-string">"(sAMAccountName=uuser1)"</span>
</code></pre>
<p>Note the <code>memberOf</code> attribute in the results; it shows the groups that the user belongs to. You will use this value to map the LDAP group to the Druid roles later. The sAMAccountName attribute contains the authenticated user identity.</p>
<h2><a class="anchor" aria-hidden="true" id="configure-druid-user-authentication-with-ldapactive-directory"></a><a href="#configure-druid-user-authentication-with-ldapactive-directory" 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 Druid user authentication with LDAP/Active Directory</h2>
<ol>
<li><p>Enable the <code>druid-basic-security</code> extension in the <code>common.runtime.properties</code> file. See <a href="/docs/latest/operations/security-overview.html">Security Overview</a> for details.</p></li>
<li><p>As a best practice, create a user in LDAP to be used for internal communication with Druid.</p></li>
<li><p>In <code>common.runtime.properties</code>, update LDAP-related properties, as shown in the following listing:</p>
<pre><code class="hljs">druid.auth.authenticatorChain=[<span class="hljs-string">"ldap"</span>]
druid.auth.authenticator.ldap.<span class="hljs-attribute">type</span>=basic
druid.auth.authenticator.ldap.<span class="hljs-attribute">enableCacheNotifications</span>=<span class="hljs-literal">true</span>
druid.auth.authenticator.ldap.credentialsValidator.<span class="hljs-attribute">type</span>=ldap
druid.auth.authenticator.ldap.credentialsValidator.<span class="hljs-attribute">url</span>=ldap://&lt;AD host&gt;:&lt;AD port&gt;
druid.auth.authenticator.ldap.credentialsValidator.<span class="hljs-attribute">bindUser</span>=&lt;AD admin user, e.g.: Administrator@example.com&gt;
druid.auth.authenticator.ldap.credentialsValidator.<span class="hljs-attribute">bindPassword</span>=&lt;AD admin password&gt;
druid.auth.authenticator.ldap.credentialsValidator.<span class="hljs-attribute">baseDn</span>=&lt;base dn, e.g.: <span class="hljs-attribute">dc</span>=example,dc=com&gt;
druid.auth.authenticator.ldap.credentialsValidator.<span class="hljs-attribute">userSearch</span>=&lt;The LDAP search, e.g.: (&amp;(<span class="hljs-attribute">sAMAccountName</span>=%s)(objectClass=user))&gt;
druid.auth.authenticator.ldap.credentialsValidator.<span class="hljs-attribute">userAttribute</span>=sAMAccountName
druid.auth.authenticator.ldap.<span class="hljs-attribute">authorizerName</span>=ldapauth
druid.escalator.<span class="hljs-attribute">type</span>=basic
druid.escalator.<span class="hljs-attribute">internalClientUsername</span>=&lt;AD internal user, e.g.: internal@example.com&gt;
druid.escalator.<span class="hljs-attribute">internalClientPassword</span>=Welcome123
druid.escalator.<span class="hljs-attribute">authorizerName</span>=ldapauth
druid.auth.authorizers=[<span class="hljs-string">"ldapauth"</span>]
druid.auth.authorizer.ldapauth.<span class="hljs-attribute">type</span>=basic
druid.auth.authorizer.ldapauth.<span class="hljs-attribute">initialAdminUser</span>=AD<span class="hljs-built_in"> user </span>who acts as the initial admin user, e.g.: internal@example.com&gt;
druid.auth.authorizer.ldapauth.<span class="hljs-attribute">initialAdminRole</span>=admin
druid.auth.authorizer.ldapauth.roleProvider.<span class="hljs-attribute">type</span>=ldap
</code></pre>
<p>Notice that the LDAP user created in the previous step, <code>internal@example.com</code>, serves as the internal client user and the initial admin user.</p></li>
</ol>
<h2><a class="anchor" aria-hidden="true" id="use-ldap-groups-to-assign-roles"></a><a href="#use-ldap-groups-to-assign-roles" 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 LDAP groups to assign roles</h2>
<p>You can map LDAP groups to a role in Druid. Members in the group get access to the permissions of the corresponding role.</p>
<h3><a class="anchor" aria-hidden="true" id="step-1-create-a-role"></a><a href="#step-1-create-a-role" 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>Step 1: Create a role</h3>
<p>First create the role in Druid using the Druid REST API.</p>
<p>Creating a role involves submitting a POST request to the Coordinator process.</p>
<p>The following REST APIs to create the role to read access for datasource, config, state.</p>
<blockquote>
<p>As mentioned, the REST API calls need to address the Coordinator node. The examples used below use localhost as the Coordinator host and 8081 as the port. Adjust these settings according to your deployment.</p>
</blockquote>
<p>Call the following API to create role <code>readRole</code> .</p>
<pre><code class="hljs">curl -i -v  -H "Content-Type: application/json" -u <span class="hljs-type">internal</span> -X POST  http://localhost:<span class="hljs-number">8081</span>/druid-ext/basic-<span class="hljs-keyword">security</span>/<span class="hljs-keyword">authorization</span>/db/ldapauth/roles/readRole 
</code></pre>
<p>Check that the role has been created successfully by entering the following:</p>
<pre><code class="hljs">curl -i -v  -H <span class="hljs-string">"Content-Type: application/json"</span> -u internal -X GET  http:<span class="hljs-regexp">//</span>localhost:<span class="hljs-number">8081</span><span class="hljs-regexp">/druid-ext/</span>basic-security<span class="hljs-regexp">/authorization/</span>db<span class="hljs-regexp">/ldapauth/</span>roles
</code></pre>
<h3><a class="anchor" aria-hidden="true" id="step-2-add-permissions-to-a-role"></a><a href="#step-2-add-permissions-to-a-role" 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>Step 2: Add permissions to a role</h3>
<p>You can now add one or more permission to the role. The following example adds read-only access to a <code>wikipedia</code> data source.</p>
<p>Given the following JSON in a file named <code>perm.json</code>:</p>
<pre><code class="hljs">[{ <span class="hljs-attr">"resource"</span>: { <span class="hljs-attr">"name"</span>: <span class="hljs-string">"wikipedia"</span>, <span class="hljs-attr">"type"</span>: <span class="hljs-string">"DATASOURCE"</span> }, <span class="hljs-attr">"action"</span>: <span class="hljs-string">"READ"</span> }
,{ <span class="hljs-attr">"resource"</span>: { <span class="hljs-attr">"name"</span>: <span class="hljs-string">".*"</span>, <span class="hljs-attr">"type"</span>: <span class="hljs-string">"STATE"</span> }, <span class="hljs-attr">"action"</span>: <span class="hljs-string">"READ"</span> },
{ <span class="hljs-attr">"resource"</span>: {<span class="hljs-attr">"name"</span>: <span class="hljs-string">".*"</span>, <span class="hljs-attr">"type"</span>: <span class="hljs-string">"CONFIG"</span>}, <span class="hljs-attr">"action"</span>: <span class="hljs-string">"READ"</span>}]
</code></pre>
<p>The following command associates the permissions in the JSON file with the role</p>
<pre><code class="hljs">curl -i -v  -H <span class="hljs-string">"Content-Type: application/json"</span> -u internal -X POST -d@perm.json  http:<span class="hljs-regexp">//</span>localhost:<span class="hljs-number">8081</span><span class="hljs-regexp">/druid-ext/</span>basic-security<span class="hljs-regexp">/authorization/</span>db<span class="hljs-regexp">/ldapauth/</span>roles<span class="hljs-regexp">/readRole/</span>permissions
</code></pre>
<p>Note that the STATE and CONFIG permissions in <code>perm.json</code> are needed to see the data source in the Druid console. If only querying permissions are needed, the READ action is sufficient:</p>
<pre><code class="hljs">[{ <span class="hljs-attr">"resource"</span>: { <span class="hljs-attr">"name"</span>: <span class="hljs-string">"wikipedia"</span>, <span class="hljs-attr">"type"</span>: <span class="hljs-string">"DATASOURCE"</span> }, <span class="hljs-attr">"action"</span>: <span class="hljs-string">"READ"</span> }]
</code></pre>
<p>You can also provide the name in the form of regular expression. For example, to give access to all data sources starting with <code>wiki</code>, specify the name as  <code>{ &quot;name&quot;: &quot;wiki.*&quot;, .....</code>.</p>
<h3><a class="anchor" aria-hidden="true" id="step-3-create-group-mapping"></a><a href="#step-3-create-group-mapping" 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>Step 3: Create group Mapping</h3>
<p>The following shows an example of a group to role mapping. It assumes that a group named <code>group1</code> exists in the directory. Also assuming the following role mapping in a file named <code>groupmap.json</code>:</p>
<pre><code class="hljs">{
    <span class="hljs-attr">"name"</span>: <span class="hljs-string">"group1map"</span>,
    <span class="hljs-attr">"groupPattern"</span>: <span class="hljs-string">"CN=group1,CN=Users,DC=example,DC=com"</span>,
    <span class="hljs-attr">"roles"</span>: [
        <span class="hljs-string">"readRole"</span>
    ]
}
</code></pre>
<p>You can configure the mapping as follows:</p>
<pre><code class="hljs">curl -i -v  -H "Content-Type: application/json" -u <span class="hljs-type">internal</span> -X POST -d @groupmap.json http://localhost:<span class="hljs-number">8081</span>/druid-ext/basic-<span class="hljs-keyword">security</span>/<span class="hljs-keyword">authorization</span>/db/ldapauth/groupMappings/group1map
</code></pre>
<p>To check whether the group mapping was created successfully, run the following command:</p>
<pre><code class="hljs">curl -i -v  -H <span class="hljs-string">"Content-Type: application/json"</span> -u internal -X GET http:<span class="hljs-regexp">//</span>localhost:<span class="hljs-number">8081</span><span class="hljs-regexp">/druid-ext/</span>basic-security<span class="hljs-regexp">/authorization/</span>db<span class="hljs-regexp">/ldapauth/g</span>roupMappings
</code></pre>
<p>To check the details of a specific group mapping, use the following:</p>
<pre><code class="hljs">curl -i -v  -H "Content-Type: application/json" -u <span class="hljs-type">internal</span> -X <span class="hljs-keyword">GET</span> http://localhost:<span class="hljs-number">8081</span>/druid-ext/basic-<span class="hljs-keyword">security</span>/<span class="hljs-keyword">authorization</span>/db/ldapauth/groupMappings/group1map
</code></pre>
<p>To add additional roles to the group mapping, use the following API:</p>
<pre><code class="hljs">curl -i -v  -H "Content-Type: application/json" -u <span class="hljs-type">internal</span> -X POST http://localhost:<span class="hljs-number">8081</span>/druid-ext/basic-<span class="hljs-keyword">security</span>/<span class="hljs-keyword">authorization</span>/db/ldapauth/groupMappings/group1/roles/&lt;newrole&gt; 
</code></pre>
<h3><a class="anchor" aria-hidden="true" id="step-4-assign-roles-for-individual-ldap-users"></a><a href="#step-4-assign-roles-for-individual-ldap-users" 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>Step 4. Assign roles for individual LDAP users</h3>
<p>Once LDAP is enabled, only user passwords are verified with LDAP. You add the LDAP user to Druid as follows:</p>
<pre><code class="hljs">curl -i -v  -H "Content-Type: application/json" -u <span class="hljs-type">internal</span> -X POST http://localhost:<span class="hljs-number">8081</span>/druid-ext/basic-<span class="hljs-keyword">security</span>/authentication/db/ldap/users/&lt;AD <span class="hljs-keyword">user</span>&gt; 
</code></pre>
<h3><a class="anchor" aria-hidden="true" id="step-5-assign-the-role-to-the-user"></a><a href="#step-5-assign-the-role-to-the-user" 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>Step 5. Assign the role to the user</h3>
<p>The following command shows how to assign a role to a user:</p>
<pre><code class="hljs">curl -i -v  -H "Content-Type: application/json" -u <span class="hljs-type">internal</span> -X POST http://localhost:<span class="hljs-number">8081</span>/druid-ext/basic-<span class="hljs-keyword">security</span>/<span class="hljs-keyword">authorization</span>/db/ldapauth/users/&lt;AD <span class="hljs-keyword">user</span>&gt;/roles/&lt;rolename&gt; 
</code></pre>
<p>For more information about security and the basic security extension, see <a href="/docs/latest/operations/security-overview.html">Security Overview</a>.</p>
</span></div></article></div><div class="docs-prevnext"><a class="docs-prev button" href="/docs/latest/operations/security-user-auth.html"><span class="arrow-prev">← </span><span>User authentication and authorization</span></a><a class="docs-next button" href="/docs/latest/operations/password-provider.html"><span>Password providers</span><span class="arrow-next"> →</span></a></div></div></div><nav class="onPageNav"><ul class="toc-headings"><li><a href="#enable-ldap-in-druid">Enable LDAP in Druid</a><ul class="toc-headings"><li><a href="#check-the-connection">Check the connection</a></li><li><a href="#check-the-search-criteria">Check the search criteria</a></li></ul></li><li><a href="#configure-druid-user-authentication-with-ldapactive-directory">Configure Druid user authentication with LDAP/Active Directory</a></li><li><a href="#use-ldap-groups-to-assign-roles">Use LDAP groups to assign roles</a><ul class="toc-headings"><li><a href="#step-1-create-a-role">Step 1: Create a role</a></li><li><a href="#step-2-add-permissions-to-a-role">Step 2: Add permissions to a role</a></li><li><a href="#step-3-create-group-mapping">Step 3: Create group Mapping</a></li><li><a href="#step-4-assign-roles-for-individual-ldap-users">Step 4. Assign roles for individual LDAP users</a></li><li><a href="#step-5-assign-the-role-to-the-user">Step 5. Assign the role to the user</a></li></ul></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/latest/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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