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class="vp-toc-header">On This Page<button type="button" class="print-button" title="Print"><svg xmlns="http://www.w3.org/2000/svg" class="icon print-icon" viewBox="0 0 1024 1024" fill="currentColor" aria-label="print icon"><path d="M819.2 364.8h-44.8V128c0-17.067-14.933-32-32-32H281.6c-17.067 0-32 14.933-32 32v236.8h-44.8C145.067 364.8 96 413.867 96 473.6v192c0 59.733 49.067 108.8 108.8 108.8h44.8V896c0 17.067 14.933 32 32 32h460.8c17.067 0 32-14.933 32-32V774.4h44.8c59.733 0 108.8-49.067 108.8-108.8v-192c0-59.733-49.067-108.8-108.8-108.8zM313.6 160h396.8v204.8H313.6V160zm396.8 704H313.6V620.8h396.8V864zM864 665.6c0 25.6-19.2 44.8-44.8 44.8h-44.8V588.8c0-17.067-14.933-32-32-32H281.6c-17.067 0-32 14.933-32 32v121.6h-44.8c-25.6 0-44.8-19.2-44.8-44.8v-192c0-25.6 19.2-44.8 44.8-44.8h614.4c25.6 0 44.8 19.2 44.8 44.8v192z"></path></svg></button><div class="arrow end"></div></div><div class="vp-toc-wrapper"><ul class="vp-toc-list"><!--[--><li class="vp-toc-item"><a class="route-link vp-toc-link level2" href="#prerequisites">Prerequisites</a></li><!----><!--]--><!--[--><li class="vp-toc-item"><a class="route-link vp-toc-link level2" href="#installation">Installation</a></li><!----><!--]--><!--[--><li class="vp-toc-item"><a class="route-link vp-toc-link level2" href="#download">Download</a></li><!----><!--]--><!--[--><li class="vp-toc-item"><a class="route-link vp-toc-link level2" href="#configurations">Configurations</a></li><!----><!--]--><!--[--><li class="vp-toc-item"><a class="route-link vp-toc-link level2" href="#start">Start</a></li><li><ul class="vp-toc-list"><!--[--><li class="vp-toc-item"><a class="route-link vp-toc-link level3" href="#starting-iotdb">Starting IoTDB</a></li><!----><!--]--><!--[--><li class="vp-toc-item"><a class="route-link vp-toc-link level3" href="#using-the-command-line-interfave-cli">Using the Command Line Interfave (CLI)</a></li><!----><!--]--><!--[--><li class="vp-toc-item"><a class="route-link vp-toc-link level3" href="#basic-commands-for-iotdb">Basic commands for IoTDB</a></li><!----><!--]--><!--[--><li class="vp-toc-item"><a class="route-link vp-toc-link level3" href="#stopping-iotdb">Stopping IoTDB</a></li><!----><!--]--><!--[--><li class="vp-toc-item"><a class="route-link vp-toc-link level3" href="#administration">Administration</a></li><!----><!--]--></ul></li><!--]--><!--[--><li class="vp-toc-item"><a class="route-link vp-toc-link level2" href="#basic-configuration">Basic configuration</a></li><!----><!--]--></ul><div class="vp-toc-marker" style="top:-1.7rem;"></div></div><!--[--><!----><!--]--></aside></div><!--[--><!----><!--]--><div class="theme-hope-content"><h1 id="quick-start" tabindex="-1"><a class="header-anchor" href="#quick-start"><span>Quick Start</span></a></h1><p>This short guide will walk you through the basic process of using IoTDB. For a more comprehensive guide, please visit our website&#39;s <a class="route-link" href="/UserGuide/V1.2.x/IoTDB-Introduction/What-is-IoTDB.html">User Guide</a>.</p><h2 id="prerequisites" tabindex="-1"><a class="header-anchor" href="#prerequisites"><span>Prerequisites</span></a></h2><p>To use IoTDB, you need to have:</p><ol><li>Java &gt;= 1.8 (Please make sure the environments PATH variable has been set to include the Java bin directory)</li><li>Set the max number of open files to at least 65535 in order to avoid &quot;too many open files&quot; problem. </li></ol><h2 id="installation" tabindex="-1"><a class="header-anchor" href="#installation"><span>Installation</span></a></h2><p>IoTDB can be installed using one of the following three installation methods:</p><ul><li>Installation from source code. If you need to modify the code yourself, you can use this method.</li><li>Installation from binary files. Download the binary distribution from the official website. This is the recommended method, in which you will get a binary released package which you can use out-of-the-box. </li><li>Using Docker：The path to the dockerfile is <a href="https://github.com/apache/iotdb/blob/master/docker/src/main" target="_blank" rel="noopener noreferrer">github<span><svg class="external-link-icon" xmlns="http://www.w3.org/2000/svg" aria-hidden="true" focusable="false" x="0px" y="0px" viewBox="0 0 100 100" width="15" height="15"><path fill="currentColor" d="M18.8,85.1h56l0,0c2.2,0,4-1.8,4-4v-32h-8v28h-48v-48h28v-8h-32l0,0c-2.2,0-4,1.8-4,4v56C14.8,83.3,16.6,85.1,18.8,85.1z"></path><polygon fill="currentColor" points="45.7,48.7 51.3,54.3 77.2,28.5 77.2,37.2 85.2,37.2 85.2,14.9 62.8,14.9 62.8,22.9 71.5,22.9"></polygon></svg><span class="external-link-icon-sr-only">open in new window</span></span></a></li></ul><h2 id="download" tabindex="-1"><a class="header-anchor" href="#download"><span>Download</span></a></h2><p>You can download the binary distribution from:<br><a href="https://iotdb.apache.org/Download/" target="_blank" rel="noopener noreferrer">Download Page<span><svg class="external-link-icon" xmlns="http://www.w3.org/2000/svg" aria-hidden="true" focusable="false" x="0px" y="0px" viewBox="0 0 100 100" width="15" height="15"><path fill="currentColor" d="M18.8,85.1h56l0,0c2.2,0,4-1.8,4-4v-32h-8v28h-48v-48h28v-8h-32l0,0c-2.2,0-4,1.8-4,4v56C14.8,83.3,16.6,85.1,18.8,85.1z"></path><polygon fill="currentColor" points="45.7,48.7 51.3,54.3 77.2,28.5 77.2,37.2 85.2,37.2 85.2,14.9 62.8,14.9 62.8,22.9 71.5,22.9"></polygon></svg><span class="external-link-icon-sr-only">open in new window</span></span></a></p><h2 id="configurations" tabindex="-1"><a class="header-anchor" href="#configurations"><span>Configurations</span></a></h2><p>Configuration files are located in the <code>conf</code> folder</p><ul><li>environment config module (<code>datanode-env.bat</code>, <code>datanode-env.sh</code>),</li><li>system config module (<code>iotdb-datanode.properties</code>)</li><li>log config module (<code>logback.xml</code>).</li></ul><p>For more information, please go to <a class="route-link" href="/UserGuide/V1.2.x/stage/DataNode-Config-Manual.html">Config</a>.</p><h2 id="start" tabindex="-1"><a class="header-anchor" href="#start"><span>Start</span></a></h2><p>You can go through the following step to test the installation.<br> If there is no error after execution, the installation is completed.</p><h3 id="starting-iotdb" tabindex="-1"><a class="header-anchor" href="#starting-iotdb"><span>Starting IoTDB</span></a></h3><p>IoTDB is designed as distributed database. You can however start it in a single node <code>standalone mode</code>.<br> In order to test your configuration, you can first start everything in <code>standalone mode</code> (i.e. 1 ConfigNode and 1 DataNode) to check everything works as expected.</p><p>Users can start IoTDB in standalone mode by using the <code>start-standalone</code> script under the <code>sbin</code> folder.</p><div class="language-text line-numbers-mode" data-ext="text" data-title="text"><pre class="language-text"><code># Unix/OS X
&gt; bash sbin/start-standalone.sh
</code></pre><div class="line-numbers" aria-hidden="true"><div class="line-number"></div><div class="line-number"></div></div></div><div class="language-text line-numbers-mode" data-ext="text" data-title="text"><pre class="language-text"><code># Windows
&gt; sbin\start-standalone.bat
</code></pre><div class="line-numbers" aria-hidden="true"><div class="line-number"></div><div class="line-number"></div></div></div><p>Note: In order to run IoTDB in standalone mode, you need to ensure that all addresses are set to 127.0.0.1.<br> If you need to access the IoTDB from a different machine, please change the configuration item <code>dn_rpc_address</code> to the public IP of the machine where IoTDB is running and be sure to set <code>replication factors</code> to 1, which is currently the default setting.<br> It is recommended to use <code>SimpleConsensus</code> in this mode, as this has performance advantages in this mode of operation.</p><h3 id="using-the-command-line-interfave-cli" tabindex="-1"><a class="header-anchor" href="#using-the-command-line-interfave-cli"><span>Using the Command Line Interfave (CLI)</span></a></h3><p>IoTDB offers several ways to interact with server, here we introduce basic steps of using the <code>CLI tool</code> to insert and query data.</p><p>After installing IoTDB, there is a pre-configured default user named <code>root</code>, its default password is also set to <code>root</code>.<br> Users can use this default credentials to login to IoTDB from the <code>CLI</code>.<br> Please use the <code>start-cli</code> scriopt in the <code>sbin</code> folder in order to start the <code>CLI</code>.</p><p>When executing the script, user should assign: <code>HOST/IP</code>, <code>PORT</code>, <code>USER_NAME</code> and <code>PASSWORD</code>.</p><p>The default parameters are <code>-h 127.0.0.1 -p 6667 -u root -pw root</code>.</p><p>Here are the commands for starting the CLI:</p><div class="language-text line-numbers-mode" data-ext="text" data-title="text"><pre class="language-text"><code># Unix/OS X
&gt; bash sbin/start-cli.sh -h 127.0.0.1 -p 6667 -u root -pw root

# Windows
&gt; sbin\start-cli.bat -h 127.0.0.1 -p 6667 -u root -pw root
</code></pre><div class="line-numbers" aria-hidden="true"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><p>The command line interface is interactive.<br> If everything is set up correctly, you should see the IoTDB logo and welcome statement:</p><div class="language-text line-numbers-mode" data-ext="text" data-title="text"><pre class="language-text"><code> _____       _________  ______   ______
|_   _|     |  _   _  ||_   _ `.|_   _ \
  | |   .--.|_/ | | \_|  | | `. \ | |_) |
  | | / .&#39;`\ \  | |      | |  | | |  __&#39;.
 _| |_| \__. | _| |_    _| |_.&#39; /_| |__) |
|_____|&#39;.__.&#39; |_____|  |______.&#39;|_______/  version x.x.x


Successfully login at 127.0.0.1:6667
IoTDB&gt;
</code></pre><div class="line-numbers" aria-hidden="true"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><h3 id="basic-commands-for-iotdb" tabindex="-1"><a class="header-anchor" href="#basic-commands-for-iotdb"><span>Basic commands for IoTDB</span></a></h3><p>Next, let us go a bit more into detail to how to create a timeseries, insert data into it and how to query data from it.</p><p>Data in IoTDB is organized as a set of timeseries, in each timeseries there are some timestamp-data pairs.<br> Every timeseries belongs to a database.</p><p>All commands are executed in an SQL-like syntax we call <code>IoTDB SQL</code>.</p><p>Before defining a timeseries, we should define the database it should belong to using <code>CREATE DATABASE</code>.<br> Here&#39;s is an example on how to do that:</p><div class="language-text line-numbers-mode" data-ext="text" data-title="text"><pre class="language-text"><code>IoTDB&gt; CREATE DATABASE root.ln
</code></pre><div class="line-numbers" aria-hidden="true"><div class="line-number"></div></div></div><p>We can also use <code>SHOW DATABASES</code> to list all databases present:</p><div class="language-text line-numbers-mode" data-ext="text" data-title="text"><pre class="language-text"><code>IoTDB&gt; SHOW DATABASES
+-----------------------------------+
|                           Database|
+-----------------------------------+
|                            root.ln|
+-----------------------------------+
Database number = 1
</code></pre><div class="line-numbers" aria-hidden="true"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><p>After the database is created, we can use <code>CREATE TIMESERIES</code> to create new timeseries.<br> When we create a timeseries, we should define its structure as well as the data types used for each field along with their encoding scheme.</p><p>We can create two timeseries the following way:</p><div class="language-text line-numbers-mode" data-ext="text" data-title="text"><pre class="language-text"><code>IoTDB&gt; CREATE TIMESERIES root.ln.wf01.wt01.status WITH DATATYPE=BOOLEAN, ENCODING=PLAIN
IoTDB&gt; CREATE TIMESERIES root.ln.wf01.wt01.temperature WITH DATATYPE=FLOAT, ENCODING=RLE
</code></pre><div class="line-numbers" aria-hidden="true"><div class="line-number"></div><div class="line-number"></div></div></div><p>To query a specific timeseries, use the <code>SHOW TIMESERIES \&lt;Path\&gt;</code> command. <code>\&lt;Path\&gt;</code> represents the path of the timeseries.<br> Its default value is null, which means that we&#39;re querying all timeseries in the system (the same as using <code>SHOW TIMESERIES root</code>).</p><p>Here are some examples:</p><ol><li>Query all timeseries in the system:</li></ol><div class="language-text line-numbers-mode" data-ext="text" data-title="text"><pre class="language-text"><code>IoTDB&gt; SHOW TIMESERIES
+-------------------------------+---------------+--------+--------+
|                     Timeseries|       Database|DataType|Encoding|
+-------------------------------+---------------+--------+--------+
|       root.ln.wf01.wt01.status|        root.ln| BOOLEAN|   PLAIN|
|  root.ln.wf01.wt01.temperature|        root.ln|   FLOAT|     RLE|
+-------------------------------+---------------+--------+--------+
Total timeseries number = 2
</code></pre><div class="line-numbers" aria-hidden="true"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><ol start="2"><li>Query a specific timeseries (root.ln.wf01.wt01.status):</li></ol><div class="language-text line-numbers-mode" data-ext="text" data-title="text"><pre class="language-text"><code>IoTDB&gt; SHOW TIMESERIES root.ln.wf01.wt01.status
+------------------------------+--------------+--------+--------+
|                    Timeseries|      Database|DataType|Encoding|
+------------------------------+--------------+--------+--------+
|      root.ln.wf01.wt01.status|       root.ln| BOOLEAN|   PLAIN|
+------------------------------+--------------+--------+--------+
Total timeseries number = 1
</code></pre><div class="line-numbers" aria-hidden="true"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><p>Insertion of timeseries data is the probably most basic operation of IoTDB.<br> You can use the <code>INSERT</code> command to do this.</p><p>Here come some examples on how to do that.<br> In the <code>INTO</code> part we tell IoTDB which timeseries we want to store the data in as well as which fields we&#39;ll be filling.<br> Please note, that the timestamp field is mandatory for this step and that we don&#39;t necessarily have to fill all fields defined of the timeseries we&#39;re inserting into:</p><div class="language-text line-numbers-mode" data-ext="text" data-title="text"><pre class="language-text"><code>IoTDB&gt; INSERT INTO root.ln.wf01.wt01(timestamp,status) values(100,true);
IoTDB&gt; INSERT INTO root.ln.wf01.wt01(timestamp,status,temperature) values(200,false,20.71)
</code></pre><div class="line-numbers" aria-hidden="true"><div class="line-number"></div><div class="line-number"></div></div></div><p>The data we’ve just inserted will then look like this if we query it:</p><div class="language-text line-numbers-mode" data-ext="text" data-title="text"><pre class="language-text"><code>IoTDB&gt; SELECT status FROM root.ln.wf01.wt01
+-----------------------+------------------------+
|                   Time|root.ln.wf01.wt01.status|
+-----------------------+------------------------+
|1970-01-01T08:00:00.100|                    true|
|1970-01-01T08:00:00.200|                   false|
+-----------------------+------------------------+
Total line number = 2
</code></pre><div class="line-numbers" aria-hidden="true"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><p>We can also query several timeseries fields at once like this:</p><div class="language-text line-numbers-mode" data-ext="text" data-title="text"><pre class="language-text"><code>IoTDB&gt; SELECT * FROM root.ln.wf01.wt01
+-----------------------+--------------------------+-----------------------------+
|                   Time|  root.ln.wf01.wt01.status|root.ln.wf01.wt01.temperature|
+-----------------------+--------------------------+-----------------------------+
|1970-01-01T08:00:00.100|                      true|                         null|
|1970-01-01T08:00:00.200|                     false|                        20.71|
+-----------------------+--------------------------+-----------------------------+
Total line number = 2
</code></pre><div class="line-numbers" aria-hidden="true"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><p>The commands to exit the CLI are:</p><div class="language-text line-numbers-mode" data-ext="text" data-title="text"><pre class="language-text"><code>IoTDB&gt; quit
or
IoTDB&gt; exit
</code></pre><div class="line-numbers" aria-hidden="true"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><p>For more information on which commands are supported by <code>IoTDB SQL</code>, please see <a class="route-link" href="/UserGuide/V1.2.x/SQL-Manual/SQL-Manual.html">SQL Reference</a>.</p><h3 id="stopping-iotdb" tabindex="-1"><a class="header-anchor" href="#stopping-iotdb"><span>Stopping IoTDB</span></a></h3><p>The server can be stopped using <code>ctrl-C</code> or by running the following script:</p><div class="language-text line-numbers-mode" data-ext="text" data-title="text"><pre class="language-text"><code># Unix/OS X
&gt; bash sbin/stop-standalone.sh

# Windows
&gt; sbin\stop-standalone.bat
</code></pre><div class="line-numbers" aria-hidden="true"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><p>Note: In Linux, please add the <code>sudo</code> as far as possible, or else the stopping process may fail. </p><p>More explanations on running IoTDB in a clustered environment are available at <a class="route-link" href="/UserGuide/V1.2.x/stage/Cluster/Cluster-Setup.html">Cluster-Setup</a>.</p><h3 id="administration" tabindex="-1"><a class="header-anchor" href="#administration"><span>Administration</span></a></h3><p>When installing IoTDB, there is a default user which is automatically pre-configured.<br> Its username is <code>root</code>, and the default password for it is also <code>root</code>.<br> This user is a user with administrative privileges, who cannot be deleted and has all privileges assigned to it.<br> Neither can new privileges be granted to the root user nor can privileges owned by it be revoked.</p><p>We strongly recommend you change the default password.<br> You do this using the following command：</p><div class="language-text line-numbers-mode" data-ext="text" data-title="text"><pre class="language-text"><code>ALTER USER &lt;username&gt; SET PASSWORD &lt;password&gt;;
Example: IoTDB &gt; ALTER USER root SET PASSWORD &#39;newpwd&#39;;
</code></pre><div class="line-numbers" aria-hidden="true"><div class="line-number"></div><div class="line-number"></div></div></div><p>More about administration options：<a class="route-link" href="/UserGuide/V1.2.x/User-Manual/Security-Management.html">Administration Management</a></p><h2 id="basic-configuration" tabindex="-1"><a class="header-anchor" href="#basic-configuration"><span>Basic configuration</span></a></h2><p>The configuration files are located in the <code>conf</code> directory.</p><p>The most important ones being:</p><ul><li>environment variable configuration (<code>datanode-env.bat</code>, <code>datanode-env.sh</code>),</li><li>system configuration (<code>iotdb-datanode.properties</code>)</li><li>log configuration (<code>logback.xml</code>).</li></ul></div><!--[--><!----><!--]--><footer class="vp-page-meta"><div class="vp-meta-item edit-link"><a href="https://github.com/apache/iotdb-docs/edit/main/src/UserGuide/V1.2.x/QuickStart/QuickStart.md" rel="noopener noreferrer" target="_blank" aria-label="Found Error? Edit this page on GitHub" class="nav-link vp-meta-label"><!--[--><svg xmlns="http://www.w3.org/2000/svg" class="icon edit-icon" viewBox="0 0 1024 1024" fill="currentColor" aria-label="edit icon"><path d="M430.818 653.65a60.46 60.46 0 0 1-50.96-93.281l71.69-114.012 7.773-10.365L816.038 80.138A60.46 60.46 0 0 1 859.225 62a60.46 60.46 0 0 1 43.186 18.138l43.186 43.186a60.46 60.46 0 0 1 0 86.373L588.879 565.55l-8.637 8.637-117.466 68.234a60.46 60.46 0 0 1-31.958 11.229z"></path><path d="M728.802 962H252.891A190.883 190.883 0 0 1 62.008 771.98V296.934a190.883 190.883 0 0 1 190.883-192.61h267.754a60.46 60.46 0 0 1 0 120.92H252.891a69.962 69.962 0 0 0-69.098 69.099V771.98a69.962 69.962 0 0 0 69.098 69.098h475.911A69.962 69.962 0 0 0 797.9 771.98V503.363a60.46 60.46 0 1 1 120.922 0V771.98A190.883 190.883 0 0 1 728.802 962z"></path></svg><!--]-->Found Error? Edit this page on GitHub<span><svg class="external-link-icon" xmlns="http://www.w3.org/2000/svg" aria-hidden="true" focusable="false" x="0px" y="0px" viewBox="0 0 100 100" width="15" height="15"><path fill="currentColor" d="M18.8,85.1h56l0,0c2.2,0,4-1.8,4-4v-32h-8v28h-48v-48h28v-8h-32l0,0c-2.2,0-4,1.8-4,4v56C14.8,83.3,16.6,85.1,18.8,85.1z"></path><polygon fill="currentColor" points="45.7,48.7 51.3,54.3 77.2,28.5 77.2,37.2 85.2,37.2 85.2,14.9 62.8,14.9 62.8,22.9 71.5,22.9"></polygon></svg><span class="external-link-icon-sr-only">open in new window</span></span><!----></a></div><div class="vp-meta-item git-info"><div class="update-time"><span class="vp-meta-label">Last update: </span><!----></div><!----></div></footer><nav class="vp-page-nav"><!----><a class="route-link nav-link next" href="/UserGuide/V1.2.x/QuickStart/ClusterQuickStart.html" aria-label="Cluster Quick Start"><div class="hint">Next<span class="arrow end"></span></div><div class="link">Cluster Quick Start<!----></div></a></nav><!----><!--[--><!----><!--]--><!--]--></main><!--]--><footer style="padding-bottom:2rem;"><span id="doc-version" style="display:none;">rel/1.2</span><p style="text-align:center;color:#909399;font-size:12px;margin:0 30px;">Copyright © 2024 The Apache Software Foundation.<br> Apache and the Apache feather logo are trademarks of The Apache Software Foundation</p><p style="text-align:center;margin-top:10px;color:#909399;font-size:12px;margin:0 30px;"><strong>Have a question?</strong> Connect with us on QQ, WeChat, or Slack. <a href="https://github.com/apache/iotdb/issues/1995">Join the community</a> now.</p></footer></div><!--]--><!--]--><!--[--><!----><!--]--><!--]--></div>
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