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  <section id="password-file-authentication">
<h1 id="security-password-file--page-root">Password file authentication<a class="headerlink" href="#security-password-file--page-root" title="Link to this heading">#</a></h1>
<p>Trino can be configured to enable frontend password authentication over
HTTPS for clients, such as the CLI, or the JDBC and ODBC drivers. The
username and password are validated against usernames and passwords stored
in a file.</p>
<p>Password file authentication is very similar to <a class="reference internal" href="ldap.html"><span class="doc">LDAP authentication</span></a>. Please see
the LDAP documentation for generic instructions on configuring the server
and clients to use TLS and authenticate with a username and password.</p>
<p>Using <a class="reference internal" href="tls.html"><span class="doc">TLS</span></a> and <a class="reference internal" href="internal-communication.html"><span class="doc">a configured shared secret</span></a> is required for password file
authentication.</p>
<section id="password-authenticator-configuration">
<h2 id="password-authenticator-configuration">Password authenticator configuration<a class="headerlink" href="#password-authenticator-configuration" title="Link to this heading">#</a></h2>
<p>To enable password file authentication, set the <a class="reference internal" href="authentication-types.html"><span class="doc">password authentication type</span></a> in <code class="docutils literal notranslate"><span class="pre">etc/config.properties</span></code>:</p>
<div class="highlight-properties notranslate"><div class="highlight"><pre><span></span><span class="na">http-server.authentication.type</span><span class="o">=</span><span class="s">PASSWORD</span>
</pre></div>
</div>
<p>In addition, create a <code class="docutils literal notranslate"><span class="pre">etc/password-authenticator.properties</span></code> file on the
coordinator with the <code class="docutils literal notranslate"><span class="pre">file</span></code> authenticator name:</p>
<div class="highlight-text notranslate"><div class="highlight"><pre><span></span>password-authenticator.name=file
file.password-file=/path/to/password.db
</pre></div>
</div>
<p>The following configuration properties are available:</p>
<table>
<thead>
<tr class="row-odd"><th class="head"><p>Property</p></th>
<th class="head"><p>Description</p></th>
</tr>
</thead>
<tbody>
<tr class="row-even"><td><p><code class="docutils literal notranslate"><span class="pre">file.password-file</span></code></p></td>
<td><p>Path of the password file.</p></td>
</tr>
<tr class="row-odd"><td><p><code class="docutils literal notranslate"><span class="pre">file.refresh-period</span></code></p></td>
<td><p>How often to reload the password file. Defaults to <code class="docutils literal notranslate"><span class="pre">5s</span></code>.</p></td>
</tr>
<tr class="row-even"><td><p><code class="docutils literal notranslate"><span class="pre">file.auth-token-cache.max-size</span></code></p></td>
<td><p>Max number of cached authenticated passwords. Defaults to <code class="docutils literal notranslate"><span class="pre">1000</span></code>.</p></td>
</tr>
</tbody>
</table>
</section>
<section id="password-files">
<h2 id="password-files">Password files<a class="headerlink" href="#password-files" title="Link to this heading">#</a></h2>
<section id="file-format">
<h3 id="file-format">File format<a class="headerlink" href="#file-format" title="Link to this heading">#</a></h3>
<p>The password file contains a list of usernames and passwords, one per line,
separated by a colon. Passwords must be securely hashed using bcrypt or PBKDF2.</p>
<p>bcrypt passwords start with <code class="docutils literal notranslate"><span class="pre">$2y$</span></code> and must use a minimum cost of <code class="docutils literal notranslate"><span class="pre">8</span></code>:</p>
<div class="highlight-text notranslate"><div class="highlight"><pre><span></span>test:$2y$10$BqTb8hScP5DfcpmHo5PeyugxHz5Ky/qf3wrpD7SNm8sWuA3VlGqsa
</pre></div>
</div>
<p>PBKDF2 passwords are composed of the iteration count, followed by the
hex encoded salt and hash:</p>
<div class="highlight-text notranslate"><div class="highlight"><pre><span></span>test:1000:5b4240333032306164:f38d165fce8ce42f59d366139ef5d9e1ca1247f0e06e503ee1a611dd9ec40876bb5edb8409f5abe5504aab6628e70cfb3d3a18e99d70357d295002c3d0a308a0
</pre></div>
</div>
</section>
<section id="creating-a-password-file">
<h3 id="creating-a-password-file">Creating a password file<a class="headerlink" href="#creating-a-password-file" title="Link to this heading">#</a></h3>
<p>Password files utilizing the bcrypt format can be created using the
<a class="reference external" href="https://httpd.apache.org/docs/current/programs/htpasswd.html">htpasswd</a>
utility from the <a class="reference external" href="https://httpd.apache.org/">Apache HTTP Server</a>.
The cost must be specified, as Trino enforces a higher minimum cost
than the default.</p>
<p>Create an empty password file to get started:</p>
<div class="highlight-text notranslate"><div class="highlight"><pre><span></span>touch password.db
</pre></div>
</div>
<p>Add or update the password for the user <code class="docutils literal notranslate"><span class="pre">test</span></code>:</p>
<div class="highlight-text notranslate"><div class="highlight"><pre><span></span>htpasswd -B -C 10 password.db test
</pre></div>
</div>
</section>
<section id="verify-configuration">
<span id="verify-authentication"></span><h3 id="verify-configuration">Verify configuration<a class="headerlink" href="#verify-configuration" title="Link to this heading">#</a></h3>
<p>To verify password file authentication, log in to the <a class="reference internal" href="../admin/web-interface.html"><span class="doc">Web UI</span></a>, and connect with the Trino <a class="reference internal" href="../client/cli.html"><span class="doc">CLI</span></a> to
the cluster:</p>
<ul class="simple">
<li><p>Connect to the Web UI from your browser using a URL that uses HTTPS, such as
<code class="docutils literal notranslate"><span class="pre">https://trino.example.com:8443</span></code>. Enter a username in the <code class="docutils literal notranslate"><span class="pre">Username</span></code> text
box and the corresponding password in the <code class="docutils literal notranslate"><span class="pre">Password</span></code> text box, and log in to
the UI. Confirm that you are not able to log in using an incorrect username
and password combination. A successful login displays the username in the
top right corner of the UI.</p></li>
<li><p>Connect with the Trino CLI using a URL that uses HTTPS, such as
<code class="docutils literal notranslate"><span class="pre">https://trino.example.net:8443</span></code> with the addition of the <code class="docutils literal notranslate"><span class="pre">--user</span></code> and
<code class="docutils literal notranslate"><span class="pre">--password</span></code> properties:</p></li>
</ul>
<div class="highlight-text notranslate"><div class="highlight"><pre><span></span>./trino --server https://trino.example.com:8443 --user test --password
</pre></div>
</div>
<p>The above command quotes you for a password. Supply the password set for the
user entered for the <code class="docutils literal notranslate"><span class="pre">--user</span></code> property to use the <code class="docutils literal notranslate"><span class="pre">trino&gt;</span></code> prompt. Sucessful
authentication allows you to run queries from the CLI.</p>
<p>To test the connection, send a query:</p>
<div class="highlight-text notranslate"><div class="highlight"><pre><span></span>trino&gt; SELECT 'rocks' AS trino;

trino
-------
rocks
(1 row)

Query 20220919_113804_00017_54qfi, FINISHED, 1 node
Splits: 1 total, 1 done (100.00%)
0.12 [0 rows, 0B] [0 rows/s, 0B/s]
</pre></div>
</div>
</section>
</section>
</section>


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