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GeminiDB_umn

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Reviewed-by: Wagner, Fabian <fabian.wagner@t-systems.com>
Co-authored-by: wangdengke2 <wangdengke2@huawei.com>
Co-committed-by: wangdengke2 <wangdengke2@huawei.com>
This commit is contained in:
Wang , Deng Ke
2025-03-18 13:52:46 +00:00
committed by zuul
parent 0e899862f8
commit bf0249500a
15 changed files with 66 additions and 48 deletions
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"des":"GeminiDB is a distributed database with decoupled compute and storage architecture. The compute clusters consist of multiple homogeneous nodes, and data is stored in a di",
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@ -281,7 +281,7 @@
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"desc":"This section describes how to change the CPU or memory of your instance to suit your service requirements.Instances can be scaled up or down.Services will be interrupted ",
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<a name="nosql_01_0001"></a><a name="nosql_01_0001"></a>
<h1 class="topictitle1">System Architecture</h1>
<div id="body1526959698240"><p id="nosql_01_0001__p126281738924"><span id="nosql_01_0001__text1194109163013">GeminiDB</span> is a distributed database with decoupled compute and storage architecture. The compute clusters consist of multiple homogeneous nodes, and data is stored in a distributed, shared storage pool. Compute and storage resources are decoupled from each other so they can be flexibly scaled in or out without having to migrate any data.</p>
<div id="body1526959698240"><p id="nosql_01_0001__p44927319275"><span id="nosql_01_0001__text1194109163013">GeminiDB</span> is a distributed database store with decoupled storage and compute. Its compute cluster consists of multiple homogeneous nodes.</p>
<p id="nosql_01_0001__p1760103532710">Data is stored in a distributed shared storage pool.</p>
<p id="nosql_01_0001__p126281738924">Compute and storage resources are decoupled from each other so they can be flexibly scaled in or out without having to migrate any data.</p>
</div>
<div>
<div class="familylinks">

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<h1 class="topictitle1">Typical Application Scenarios</h1>
<div id="body1558943571786"><div class="section" id="nosql_01_0010__section8477172513453"><h4 class="sectiontitle">IoT</h4><p id="nosql_01_0010__p3687103794412"><span id="nosql_01_0010__text4303161512381">GeminiDB</span> is compatible with Cassandra APIs. It is designed for write-intensive scenarios, specifically applied in manufacturing, logistics, health care, real estate, energy production, and agriculture. It can process data sent by different types of sensors for further analysis.</p>
<p id="nosql_01_0010__p1868743716445">Advantages:</p>
<p id="nosql_01_0010__p1868743716445"><strong id="nosql_01_0010__b11971247125118">Highlights</strong></p>
<ul id="nosql_01_0010__ul1966331415497"><li id="nosql_01_0010__li6664814174911"><strong id="nosql_01_0010__b1349479104210">High Write Performance</strong>: GeminiDB provides higher write performance than other NoSQL services.</li><li id="nosql_01_0010__li8664171411496"><strong id="nosql_01_0010__b74551950114211">High Scalability</strong>: Compute nodes can be scaled in or out to flexibly cope with traffic surges or large writes loads at any time.</li></ul>
</div>
<div class="section" id="nosql_01_0010__section4973744134517"><h4 class="sectiontitle">Internet</h4><p id="nosql_01_0010__p111711505446">E-commerce and entertainment websites that include product catalogs, recommendations, and personalization engines use <span id="nosql_01_0010__text102391236113816">GeminiDB</span> when they require fast reading and writing of data and high scalability. <span id="nosql_01_0010__text1762981715455">GeminiDB</span> stores visitor activities, making it easy for analysis tools to access data fast and to generate recommendations.</p>
<p id="nosql_01_0010__p1317250184418">Advantages:</p>
<p id="nosql_01_0010__p1317250184418"><strong id="nosql_01_0010__b19221951165118">Highlights</strong></p>
<ul id="nosql_01_0010__ul117364744810"><li id="nosql_01_0010__li173647154813"><strong id="nosql_01_0010__b8302191904418">High Write Performance</strong>: GeminiDB provides higher write performance than other NoSQL services.</li><li id="nosql_01_0010__li18736677484"><strong id="nosql_01_0010__b1622414477443">Big Data Analysis</strong>: GeminiDB can work with Spark to provide recommendations to your customers in real-time.</li></ul>
</div>
<div class="section" id="nosql_01_0010__section394685515450"><h4 class="sectiontitle">Finance</h4><p id="nosql_01_0010__p086912597441">With Spark′s big data analysis capabilities, <span id="nosql_01_0010__text20150144718382">GeminiDB</span> helps companies in the finance sector build risk control systems and mitigate fraud.</p>
<p id="nosql_01_0010__p1886915994413">Advantages:</p>
<p id="nosql_01_0010__p1886915994413"><strong id="nosql_01_0010__b592585113517">Highlights</strong></p>
<p id="nosql_01_0010__p106915463817"><strong id="nosql_01_0010__b11975174174520">Big Data Analysis</strong>: Spark and other big data processing technologies enable real-time fraud detection and prevention.</p>
</div>
</div>

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<h1 class="topictitle1">Configuring Security Group Rules</h1>
<div id="body1568079458237"><div class="section" id="nosql_02_0004__section3152058916230"><h4 class="sectiontitle"><strong id="nosql_02_0004__b16218454114513">Scenarios</strong></h4><p id="nosql_02_0004__p199191161250">The default security group rule allows all outgoing data packets. <span id="nosql_02_0004__text84651218553">ECS</span><span id="nosql_02_0004__text154659184517"></span>s and <span id="nosql_02_0004__text346516182514">GeminiDB</span> instances in the same security group can access each other. After a security group is created, you can create different rules for that security group, which allows you to control access to the <span id="nosql_02_0004__text24651218954">GeminiDB</span> instances that in it.</p>
<p id="nosql_02_0004__p43222116204125">The following describes how to configure security groups.</p>
<p id="nosql_02_0004__p43222116204125">The following describes how to set security groups.</p>
</div>
<div class="section" id="nosql_02_0004__section9456131432010"><h4 class="sectiontitle"><strong id="nosql_02_0004__b622952211485">Precautions</strong></h4><ul id="nosql_02_0004__ul10612183218515"><li id="nosql_02_0004__li8531887277">If the ECS and DB instance are in the same security group, they can communicate with each other by default. No security group rule needs to be configured.</li><li id="nosql_02_0004__li06121321516">If the ECS and DB instance are in different security groups, you need to configure security group rules for the ECS and DB instance separately.<ul id="nosql_02_0004__ul13612732951"><li id="nosql_02_0004__li4571145411248">To allow access to a <span id="nosql_02_0004__text20661161562618">GeminiDB Cassandra</span> instance, you need to configure an inbound rule for the security group that the instance nodes belong to.</li><li id="nosql_02_0004__li14612163220515">By default, the security group allows all outbound data packets, so you do not need to configure a security rule for the ECS. If not all access from the ECS is allowed, you need to configure an outbound rule for the ECS.</li></ul>
</li></ul>

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</li></ul>
</li><li id="nosql_02_0005__li7354102612436">The default port of the <span id="nosql_02_0005__text46739248164">GeminiDB Cassandra</span> instance is 8635.</li></ul>
</div>
<div class="section" id="nosql_02_0005__section45253223112"><h4 class="sectiontitle">Prerequisites</h4><ul id="nosql_02_0005__ul3360182717119"><li id="nosql_02_0005__li203601427316">Create an <span id="nosql_02_0005__text892012516537">ECS</span><span id="nosql_02_0005__text159212051115319"></span> running Linux. For details, see "Creating ECSs" in <em id="nosql_02_0005__i1911412210188"><span id="nosql_02_0005__text3805010175417">ECS</span><span id="nosql_02_0005__text68051108547"></span> User Guide</em>.</li><li id="nosql_02_0005__li65523118612">Obtain the <a href="https://archive.apache.org/dist/cassandra/3.11.3/apache-cassandra-3.11.3-bin.tar.gz" target="_blank" rel="noopener noreferrer">Cassandra client installation package 3.11.3</a> from the official website.</li><li id="nosql_02_0005__li81904414417">If Python is not installed, download and install <a href="https://www.python.org/ftp/python/2.7.16/Python-2.7.16.tgz" target="_blank" rel="noopener noreferrer">Python 2.7</a> and <a href="https://pypi.org/project/cassandra-driver/" target="_blank" rel="noopener noreferrer">cassandra-driver</a> 3.11.0 or later.</li></ul>
<div class="section" id="nosql_02_0005__section45253223112"><h4 class="sectiontitle">Prerequisites</h4><ul id="nosql_02_0005__ul3360182717119"><li id="nosql_02_0005__li203601427316">You have created an <span id="nosql_02_0005__text892012516537">ECS</span><span id="nosql_02_0005__text159212051115319"></span> running Linux. For details, see "Creating ECSs" in <em id="nosql_02_0005__i1911412210188"><span id="nosql_02_0005__text3805010175417">ECS</span><span id="nosql_02_0005__text68051108547"></span> User Guide</em>.</li><li id="nosql_02_0005__li65523118612">You have obtained the <a href="https://archive.apache.org/dist/cassandra/3.11.3/apache-cassandra-3.11.3-bin.tar.gz" target="_blank" rel="noopener noreferrer">Cassandra client installation package 3.11.3</a> from the official website.</li><li id="nosql_02_0005__li81904414417">If Python is not installed, download and install <a href="https://www.python.org/ftp/python/2.7.16/Python-2.7.16.tgz" target="_blank" rel="noopener noreferrer">Python 2.7</a> and <a href="https://pypi.org/project/cassandra-driver/" target="_blank" rel="noopener noreferrer">cassandra-driver</a> 3.11.0 or later.</li></ul>
</div>
<div class="section" id="nosql_02_0005__section398995894218"><h4 class="sectiontitle">Using the Cassandra Client Tool to Connect to a DB Instance</h4><ol id="nosql_02_0005__o12386b3d9147482881ddfdfd9a3f787c"><li id="nosql_02_0005__li15904581714"><span>Log in to the <span id="nosql_02_0005__text834714311399">ECS</span><span id="nosql_02_0005__text136127447919"></span>. For details, see the section "Logging In to an <span id="nosql_02_0005__text16983116185514">ECS</span><span id="nosql_02_0005__text19709131915512"></span>" in the <em id="nosql_02_0005__i114541240152112">Elastic Cloud Server User Guide</em>.</span></li><li id="nosql_02_0005__li44786699134732"><span>Upload the Cassandra client installation package 3.11.3 to the ECS. If Wget fails to be downloaded, download it to your local PC and then upload it to the ECS.</span><p><p id="nosql_02_0005__p5999419227">wget https://archive.apache.org/dist/cassandra/3.11.3/apache-cassandra-3.11.3-bin.tar.gz</p>
<p id="nosql_02_0005__p1327863919596">tar -zxvf apache-cassandra-3.11.3-bin.tar.gz</p>

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<div id="body8662426"><div class="section" id="nosql_02_0009__en-us_topic_0221158680_section46429645141251"><h4 class="sectiontitle">Scenarios</h4><p id="nosql_02_0009__en-us_topic_0221158680_p127651481575">You can use an <span id="nosql_02_0009__text1686619140715">ECS</span><span id="nosql_02_0009__text288521710710"></span> or local device to connect to a <span id="nosql_02_0009__text1393835471918">GeminiDB</span> instance over a public network.</p>
<p id="nosql_02_0009__en-us_topic_0221158680_p1112805719352">This section describes how to use a Linux <span id="nosql_02_0009__text73880273711">ECS</span><span id="nosql_02_0009__text139473291778"></span> to connect to a <span id="nosql_02_0009__text615711117209">GeminiDB Cassandra</span> instance over a public network.</p>
</div>
<div class="section" id="nosql_02_0009__section2038518412128"><h4 class="sectiontitle">Prerequisites</h4><ul id="nosql_02_0009__ul16851511181213"><li id="nosql_02_0009__li88517115122">Bind an <span id="nosql_02_0009__text135617373811">EIP</span><span id="nosql_02_0009__text48873422811"></span> to the <span id="nosql_02_0009__text83081120152016">GeminiDB Cassandra</span> instance node and set security group rules.</li><li id="nosql_02_0009__li16851211101216">Create an <span id="nosql_02_0009__text39343577714">ECS</span><span id="nosql_02_0009__text136831201187"></span> running Linux. For details, see "Creating <span id="nosql_02_0009__text17560519781">ECS</span><span id="nosql_02_0009__text336715221819"></span>s" in <em id="nosql_02_0009__i772014291347"><span id="nosql_02_0009__text15671023993">ECS</span><span id="nosql_02_0009__text9681923891"></span> User Guide</em>.</li><li id="nosql_02_0009__li65523118612">Obtain the <a href="https://archive.apache.org/dist/cassandra/3.11.3/apache-cassandra-3.11.3-bin.tar.gz" target="_blank" rel="noopener noreferrer">Cassandra client installation package 3.11.3</a> from the official website.</li><li id="nosql_02_0009__li81904414417">If Python is not installed, download and install <a href="https://www.python.org/ftp/python/2.7.16/Python-2.7.16.tgz" target="_blank" rel="noopener noreferrer">Python 2.7</a> and <a href="https://pypi.org/project/cassandra-driver/" target="_blank" rel="noopener noreferrer">cassandra-driver</a> 3.11.0 or later.</li></ul>
<div class="section" id="nosql_02_0009__section2038518412128"><h4 class="sectiontitle">Prerequisites</h4><ul id="nosql_02_0009__ul16851511181213"><li id="nosql_02_0009__li88517115122">Bind an <span id="nosql_02_0009__text135617373811">EIP</span><span id="nosql_02_0009__text48873422811"></span> to the <span id="nosql_02_0009__text83081120152016">GeminiDB Cassandra</span> instance node and set security group rules.</li><li id="nosql_02_0009__li16851211101216">You have created an <span id="nosql_02_0009__text12241939408570">ECS</span><span id="nosql_02_0009__text8867644248570"></span> running Linux. For details, see "Creating <span id="nosql_02_0009__text17560519781">ECS</span><span id="nosql_02_0009__text336715221819"></span>s" in <em id="nosql_02_0009__i772014291347"><span id="nosql_02_0009__text15671023993">ECS</span><span id="nosql_02_0009__text9681923891"></span> User Guide</em>.</li><li id="nosql_02_0009__li65523118612">You have obtained the <a href="https://archive.apache.org/dist/cassandra/3.11.3/apache-cassandra-3.11.3-bin.tar.gz" target="_blank" rel="noopener noreferrer">Cassandra client installation package 3.11.3</a> from the official website.</li><li id="nosql_02_0009__li81904414417">If Python is not installed, download and install <a href="https://www.python.org/ftp/python/2.7.16/Python-2.7.16.tgz" target="_blank" rel="noopener noreferrer">Python 2.7</a> and <a href="https://pypi.org/project/cassandra-driver/" target="_blank" rel="noopener noreferrer">cassandra-driver</a> 3.11.0 or later.</li></ul>
</div>
<div class="section" id="nosql_02_0009__en-us_topic_0221158680_section11470653104612"><h4 class="sectiontitle">Connecting to a DB Instance Through a Cassandra Client</h4><ol id="nosql_02_0009__en-us_topic_0221158680_o12386b3d9147482881ddfdfd9a3f787c"><li id="nosql_02_0009__li11874152715149"><span>Log in to the <span id="nosql_02_0009__text1594914139117">ECS</span><span id="nosql_02_0009__text15304141711118"></span>. For details, see the section "Logging In to an <span id="nosql_02_0009__text952162443715">ECS</span><span id="nosql_02_0009__text652516247375"></span>" in the <em id="nosql_02_0009__i052714242375">Elastic Cloud Server User Guide</em>.</span></li><li id="nosql_02_0009__li44786699134732"><span>Upload the Cassandra client installation package 3.11.3 to the ECS. If Wget fails to be downloaded, download it to your local PC and then upload it to the ECS.</span><p><p id="nosql_02_0009__p5999419227">wget https://archive.apache.org/dist/cassandra/3.11.3/apache-cassandra-3.11.3-bin.tar.gz</p>
<p id="nosql_02_0009__p1327863919596">tar -zxvf apache-cassandra-3.11.3-bin.tar.gz</p>
@ -22,21 +22,21 @@
<ul id="nosql_02_0009__en-us_topic_0000001092187204_ul1511182454315"><li id="nosql_02_0009__en-us_topic_0000001092187204_li171118245432">Run <strong id="nosql_02_0009__b17348931312">HELP</strong><em id="nosql_02_0009__i203483317112"> &lt;COMMAND&gt;</em> to query the usage of a command. Example: <strong id="nosql_02_0009__en-us_topic_0000001092187204_b944037111611">HELP DESC</strong></li><li id="nosql_02_0009__en-us_topic_0000001092187204_li16722142313237">Keyspace syntax<ul id="nosql_02_0009__en-us_topic_0000001092187204_ul518915524342"><li id="nosql_02_0009__en-us_topic_0000001092187204_li2055193415351">Create a keyspace. Example:<p id="nosql_02_0009__en-us_topic_0000001092187204_p940934216355"><a name="nosql_02_0009__en-us_topic_0000001092187204_li2055193415351"></a><a name="en-us_topic_0000001092187204_li2055193415351"></a><strong id="nosql_02_0009__en-us_topic_0000001092187204_b99070472352">CREATE KEYSPACE IF NOT EXISTS test_keyspace WITH replication = {'class': 'SimpleStrategy', 'replication_factor': '3'};</strong></p>
<p id="nosql_02_0009__en-us_topic_0000001092187204_p1871773722315">Set the keyspace name to <strong id="nosql_02_0009__b158661037185319">test_keyspace</strong>, <strong id="nosql_02_0009__b1186643795320">replication</strong> to <strong id="nosql_02_0009__b3866133725310">SimpleStrategy</strong>, and number of replicas to <strong id="nosql_02_0009__b19867537205319">3</strong>.</p>
</li><li id="nosql_02_0009__en-us_topic_0000001092187204_li0440194092519">Run <strong id="nosql_02_0009__b1492944185513">DESC</strong> <em id="nosql_02_0009__i11929549555">&lt;keyspace_name&gt;</em> to verify the creation results.</li><li id="nosql_02_0009__en-us_topic_0000001092187204_li10716132819307">Run <strong id="nosql_02_0009__b1667791611555">use</strong> <em id="nosql_02_0009__i467791615555">&lt;keyspace_name&gt;</em> to switch to the keyspace you created.</li><li id="nosql_02_0009__en-us_topic_0000001092187204_li1996263723912">Run <strong id="nosql_02_0009__b5420152785513">DROP</strong> <strong id="nosql_02_0009__b14420132715518">KEYSPACE</strong> <em id="nosql_02_0009__i134201627185514">&lt;keyspace_name&gt;</em> to delete the keyspace you created.</li></ul>
</li><li id="nosql_02_0009__en-us_topic_0000001092187204_li15808191519345">Table syntax<ul id="nosql_02_0009__en-us_topic_0000001092187204_ul4145928174917"><li id="nosql_02_0009__en-us_topic_0000001092187204_li5633204711360">Create a table. Example:<p id="nosql_02_0009__en-us_topic_0000001092187204_p1128093811492"><a name="nosql_02_0009__en-us_topic_0000001092187204_li5633204711360"></a><a name="en-us_topic_0000001092187204_li5633204711360"></a><strong id="nosql_02_0009__en-us_topic_0000001092187204_b11608174274910">CREATE TABLE test_table(user_id int, age int, user_name text, PRIMARY KEY(user_id));</strong></p>
</li><li id="nosql_02_0009__en-us_topic_0000001092187204_li15808191519345">Table syntax<ul id="nosql_02_0009__en-us_topic_0000001092187204_ul4145928174917"><li id="nosql_02_0009__en-us_topic_0000001092187204_li5633204711360">Create a table, for example:<p id="nosql_02_0009__en-us_topic_0000001092187204_p1128093811492"><a name="nosql_02_0009__en-us_topic_0000001092187204_li5633204711360"></a><a name="en-us_topic_0000001092187204_li5633204711360"></a><strong id="nosql_02_0009__en-us_topic_0000001092187204_b11608174274910">CREATE TABLE test_table(user_id int, age int, user_name text, PRIMARY KEY(user_id));</strong></p>
<p id="nosql_02_0009__en-us_topic_0000001092187204_p14202194110568"><strong id="nosql_02_0009__b1688754425316">test_table</strong> is a table name defined by the following three columns: <strong id="nosql_02_0009__b1388714412535">user_id</strong>, <strong id="nosql_02_0009__b888711441535">age</strong>, and <strong id="nosql_02_0009__b18888194455312">user_name</strong>. <strong id="nosql_02_0009__b127677100536">user_id</strong> indicates a user ID of the INT data type. <strong id="nosql_02_0009__b1176771015319">age</strong> indicates user age of the INT data type. <strong id="nosql_02_0009__b1976718101534">user_name</strong> indicates a username of the TEXT data type. The primary key is <strong id="nosql_02_0009__b8445341992627">user_id</strong>.</p>
</li><li id="nosql_02_0009__en-us_topic_0000001092187204_li651814468551">Run <strong id="nosql_02_0009__b12713183635813">DESC</strong> <em id="nosql_02_0009__i971493618588">&lt;table_name&gt;</em> to verify the creation results.</li><li id="nosql_02_0009__en-us_topic_0000001092187204_li422284416563">Insert data into the table. Example:<p id="nosql_02_0009__en-us_topic_0000001092187204_p87659381909"><a name="nosql_02_0009__en-us_topic_0000001092187204_li422284416563"></a><a name="en-us_topic_0000001092187204_li422284416563"></a><strong id="nosql_02_0009__en-us_topic_0000001092187204_b31291453562">INSERT INTO test_table (user_id, age, user_name) VALUES (1, 10, 'user1');</strong></p>
<p id="nosql_02_0009__en-us_topic_0000001092187204_p12981067516"><strong id="nosql_02_0009__en-us_topic_0000001092187204_b14138353161">INSERT INTO test_table (user_id, age, user_name) VALUES (2, 20, 'user2');</strong></p>
<p id="nosql_02_0009__en-us_topic_0000001092187204_p1249212711518"><strong id="nosql_02_0009__en-us_topic_0000001092187204_b61425531665">INSERT INTO test_table (user_id, age, user_name) VALUES (3, 30, 'user3');</strong></p>
</li><li id="nosql_02_0009__en-us_topic_0000001092187204_li144811536301">Run <strong id="nosql_02_0009__b394175745814">SELECT * FROM</strong> <em id="nosql_02_0009__i169545720588">&lt;table_name&gt;</em> to query table data.</li><li id="nosql_02_0009__en-us_topic_0000001092187204_li26671151181414">Add a column to the table. Example:<p id="nosql_02_0009__en-us_topic_0000001092187204_p1783717131510"><a name="nosql_02_0009__en-us_topic_0000001092187204_li26671151181414"></a><a name="en-us_topic_0000001092187204_li26671151181414"></a><strong id="nosql_02_0009__en-us_topic_0000001092187204_b4509920141512">ALTER TABLE test_table ADD gender text;</strong></p>
</li><li id="nosql_02_0009__en-us_topic_0000001092187204_li157173354137">Update data in a table of a keyspace. Example:<p id="nosql_02_0009__en-us_topic_0000001092187204_p10953554175915"><a name="nosql_02_0009__en-us_topic_0000001092187204_li157173354137"></a><a name="en-us_topic_0000001092187204_li157173354137"></a><strong id="nosql_02_0009__en-us_topic_0000001092187204_b189541554175913">UPDATE test_keyspace.test_table SET prename = 'user_prename1' WHERE user_id = 1;</strong></p>
</li><li id="nosql_02_0009__en-us_topic_0000001092187204_li144811536301">Run <strong id="nosql_02_0009__b394175745814">SELECT * FROM</strong> <em id="nosql_02_0009__i169545720588">&lt;table_name&gt;</em> to query table data.</li><li id="nosql_02_0009__en-us_topic_0000001092187204_li26671151181414">Add a column to the table, for example:<p id="nosql_02_0009__en-us_topic_0000001092187204_p1783717131510"><a name="nosql_02_0009__en-us_topic_0000001092187204_li26671151181414"></a><a name="en-us_topic_0000001092187204_li26671151181414"></a><strong id="nosql_02_0009__en-us_topic_0000001092187204_b4509920141512">ALTER TABLE test_table ADD gender text;</strong></p>
</li><li id="nosql_02_0009__en-us_topic_0000001092187204_li157173354137">Update data in a table of a keyspace, for example:<p id="nosql_02_0009__en-us_topic_0000001092187204_p10953554175915"><a name="nosql_02_0009__en-us_topic_0000001092187204_li157173354137"></a><a name="en-us_topic_0000001092187204_li157173354137"></a><strong id="nosql_02_0009__en-us_topic_0000001092187204_b189541554175913">UPDATE test_keyspace.test_table SET prename = 'user_prename1' WHERE user_id = 1;</strong></p>
<p id="nosql_02_0009__en-us_topic_0000001092187204_p29541354155916"><strong id="nosql_02_0009__en-us_topic_0000001092187204_b1395485425912">UPDATE test_keyspace.test_table SET prename = 'user_prename2' WHERE user_id = 2;</strong></p>
<p id="nosql_02_0009__en-us_topic_0000001092187204_p139541154125917"><strong id="nosql_02_0009__en-us_topic_0000001092187204_b19954115405912">UPDATE test_keyspace.test_table SET prename = 'user_prename3' WHERE user_id = 3;</strong></p>
</li><li id="nosql_02_0009__en-us_topic_0000001092187204_li1583971919196">Delete data from a table in a keyspace. Example:<p id="nosql_02_0009__en-us_topic_0000001092187204_p7769414163513"><a name="nosql_02_0009__en-us_topic_0000001092187204_li1583971919196"></a><a name="en-us_topic_0000001092187204_li1583971919196"></a>Delete the age data of the user whose ID is <strong id="nosql_02_0009__b4403415092627">1</strong>.</p>
</li><li id="nosql_02_0009__en-us_topic_0000001092187204_li1583971919196">Delete data from a table in a keyspace, for example:<p id="nosql_02_0009__en-us_topic_0000001092187204_p7769414163513"><a name="nosql_02_0009__en-us_topic_0000001092187204_li1583971919196"></a><a name="en-us_topic_0000001092187204_li1583971919196"></a>Delete the age data of the user whose ID is <strong id="nosql_02_0009__b4403415092627">1</strong>.</p>
<p id="nosql_02_0009__en-us_topic_0000001092187204_p650381772812"><strong id="nosql_02_0009__en-us_topic_0000001092187204_b9420145416353">DELETE age FROM test_keyspace.test_table WHERE user_id=1;</strong></p>
<p id="nosql_02_0009__en-us_topic_0000001092187204_p20521197299">Delete the entire record of the user whose ID is <strong id="nosql_02_0009__b159765503792627">2</strong>.</p>
<p id="nosql_02_0009__en-us_topic_0000001092187204_p2040992116368"><strong id="nosql_02_0009__en-us_topic_0000001092187204_b164610253367">DELETE FROM test_keyspace.test_table WHERE user_id=2;</strong></p>
</li><li id="nosql_02_0009__en-us_topic_0000001092187204_li564614457308">Clear all records in the table. Example:<p id="nosql_02_0009__en-us_topic_0000001092187204_p4124133673816"><a name="nosql_02_0009__en-us_topic_0000001092187204_li564614457308"></a><a name="en-us_topic_0000001092187204_li564614457308"></a><strong id="nosql_02_0009__en-us_topic_0000001092187204_b83562404385">TRUNCATE test_keyspace.test_table;</strong></p>
</li><li id="nosql_02_0009__en-us_topic_0000001092187204_li1931831211318">Delete the entire table. Example:<p id="nosql_02_0009__en-us_topic_0000001092187204_p12912141519410"><a name="nosql_02_0009__en-us_topic_0000001092187204_li1931831211318"></a><a name="en-us_topic_0000001092187204_li1931831211318"></a><strong id="nosql_02_0009__en-us_topic_0000001092187204_b988016182430">DROP TABLE test_keyspace.test_table;</strong></p>
</li><li id="nosql_02_0009__en-us_topic_0000001092187204_li564614457308">Clear all records in the table, for example:<p id="nosql_02_0009__en-us_topic_0000001092187204_p4124133673816"><a name="nosql_02_0009__en-us_topic_0000001092187204_li564614457308"></a><a name="en-us_topic_0000001092187204_li564614457308"></a><strong id="nosql_02_0009__en-us_topic_0000001092187204_b83562404385">TRUNCATE test_keyspace.test_table;</strong></p>
</li><li id="nosql_02_0009__en-us_topic_0000001092187204_li1931831211318">Delete an entire table, for example:<p id="nosql_02_0009__en-us_topic_0000001092187204_p12912141519410"><a name="nosql_02_0009__en-us_topic_0000001092187204_li1931831211318"></a><a name="en-us_topic_0000001092187204_li1931831211318"></a><strong id="nosql_02_0009__en-us_topic_0000001092187204_b988016182430">DROP TABLE test_keyspace.test_table;</strong></p>
</li></ul>
</li></ul>
</div>

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@ -14,7 +14,7 @@
</li>
<li class="ulchildlink"><strong><a href="nosql_increase_storage1.html">Configuring Auto Scale</a></strong><br>
</li>
<li class="ulchildlink"><strong><a href="nosql_03_0026.html">Changing a DB Instance Class</a></strong><br>
<li class="ulchildlink"><strong><a href="nosql_03_0026.html">Changing the CPU and Memory of an Instance</a></strong><br>
</li>
<li class="ulchildlink"><strong><a href="nosql_increase_nodes.html">Adding Nodes</a></strong><br>
</li>

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<ol type="a" id="nosql_03_0009__ol142518471376"><li id="nosql_03_0009__li125164713373">On the <strong id="nosql_03_0009__b84235270615219">Instance Management</strong> page, click the target DB instance.</li><li id="nosql_03_0009__li1191285315378">On the <span class="uicontrol" id="nosql_03_0009__uicontrol2380715141811"><b>Backups &amp; Restorations</b></span> page, locate the target backup and click <span class="uicontrol" id="nosql_03_0009__uicontrol938111153187"><b>Restore</b></span>.</li></ol>
<p id="nosql_03_0009__p11747207164319"><strong id="nosql_03_0009__b1218305212161736">Method 2</strong></p>
<p id="nosql_03_0009__p87441650204314">On the <span class="uicontrol" id="nosql_03_0009__uicontrol13891350171813"><b>Backup Management</b></span> page, locate the target backup and click <span class="uicontrol" id="nosql_03_0009__uicontrol1490195061817"><b>Restore</b></span>.</p>
</p></li><li id="nosql_03_0009__li1263239616537"><span>In the displayed dialog box, confirm the current instance details and restoration method and click <strong id="nosql_03_0009__b112841125192510">OK</strong>.</span><p><ul id="nosql_03_0009__ul77342022805"><li id="nosql_03_0009__li2734122605">The default API type and DB engine version are the same as those of the original instance and cannot be changed. </li><li id="nosql_03_0009__li1973472217017">GeminiDB automatically calculates the minimum storage space required for restoration based on the size of the selected backup file. The storage space depends on the instance specifications, and must be a multiple of 10 GB.</li><li id="nosql_03_0009__li1373415221903">You need to set a new administrator password.</li></ul>
</p></li><li id="nosql_03_0009__li1263239616537"><span>In the displayed dialog box, confirm the current instance details and restoration method and click <strong id="nosql_03_0009__b0443717165420">OK</strong>.</span><p><ul id="nosql_03_0009__ul77342022805"><li id="nosql_03_0009__li2734122605">The default API type and DB engine version are the same as those of the original instance and cannot be changed. </li><li id="nosql_03_0009__li1973472217017">GeminiDB automatically calculates the minimum storage space required for restoration based on the size of the selected backup file. The storage space depends on the instance specifications, and must be a multiple of 10 GB.</li><li id="nosql_03_0009__li1373415221903">You need to set a new administrator password.</li></ul>
<ul id="nosql_03_0009__ul11734112216016"><li id="nosql_03_0009__li1973417221008">To modify other parameters, see the description of creating DB instances of other DB engines in the <em id="nosql_03_0009__i13971346101616">Getting Started</em>.</li></ul>
</p></li><li id="nosql_03_0009__li28057821151656"><span>View the restoration results.</span><p><p id="nosql_03_0009__p13927141814199">A new DB instance is created using the backup data. The status of the DB instance changes from <strong id="nosql_03_0009__b3829408514">Creating</strong> to <strong id="nosql_03_0009__b153416443516">Available</strong>.</p>
<p id="nosql_03_0009__p12580181415516">After the restoration, the system will perform a full backup.</p>

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<td class="cellrowborder" valign="top" width="17.82178217821782%" headers="mcps1.3.3.2.2.7.1.3 "><p id="nosql_03_0011__p7247944262">P75 read latency</p>
<p id="nosql_03_0011__p10524246133113">Unit: ms</p>
</td>
<td class="cellrowborder" valign="top" width="15.841584158415841%" headers="mcps1.3.3.2.2.7.1.4 "><p id="nosql_03_0011__p2951175611811">≥ 0 ms</p>
<td class="cellrowborder" valign="top" width="15.841584158415841%" headers="mcps1.3.3.2.2.7.1.4 "><p id="nosql_03_0011__p2951175611811">≥ 0 ms</p>
</td>
<td class="cellrowborder" valign="top" width="18.81188118811881%" headers="mcps1.3.3.2.2.7.1.5 "><p id="nosql_03_0011__p4187131421019">Monitored object: database</p>
<p id="nosql_03_0011__p1918791411012">Monitored object: <span id="nosql_03_0011__text168681827141014">GeminiDB Cassandra</span> instance node</p>
@ -570,7 +570,7 @@
<td class="cellrowborder" valign="top" width="15.841584158415841%" headers="mcps1.3.3.2.2.7.1.4 "><p id="nosql_03_0011__p1413814473500">≥ 0 Counts</p>
</td>
<td class="cellrowborder" valign="top" width="18.81188118811881%" headers="mcps1.3.3.2.2.7.1.5 "><p id="nosql_03_0011__p122919538507">Monitored object: database</p>
<p id="nosql_03_0011__p182291253195013">Monitored object: node of the Kunpeng-based <span id="nosql_03_0011__text162295535504">GeminiDB Cassandra</span> instance</p>
<p id="nosql_03_0011__p182291253195013">Monitored object: <span id="nosql_03_0011__text162295535504">GeminiDB Cassandra</span> instance node</p>
</td>
<td class="cellrowborder" valign="top" width="18.81188118811881%" headers="mcps1.3.3.2.2.7.1.6 "><p id="nosql_03_0011__p1892741444715">1 minute</p>
</td>

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<p id="nosql_03_0014__p773716268254">Adding tags to <span id="nosql_03_0014__text18141640145414">GeminiDB</span> instances helps you better identify and manage them. An instance can be tagged during or after it is created.</p>
<p id="nosql_03_0014__p52112294441">After an instance is tagged, you can search for the tag key or value to quickly query the instance details.</p>
</div>
<div class="section" id="nosql_03_0014__section19903176935"><h4 class="sectiontitle">Precautions</h4><ul id="nosql_03_0014__ul10009188184716"><li id="nosql_03_0014__li34815110153828">You are advised to set predefined tags on the TMS console.</li><li id="nosql_03_0014__li33745154153336">A tag consists of a key and value. You can add only one value for each key. For details about the naming rules of tag keys and tag values, see <a href="#nosql_03_0014__table197401426182516">Table 1</a>.</li><li id="nosql_03_0014__li16257494184716">Up to <span id="nosql_03_0014__text428813208549"></span><span id="nosql_03_0014__text194022310549">20</span> tags can be added for each instance.</li></ul>
<div class="section" id="nosql_03_0014__section19903176935"><h4 class="sectiontitle">Usage Notes</h4><ul id="nosql_03_0014__ul10009188184716"><li id="nosql_03_0014__li34815110153828">You are advised to set predefined tags on the TMS console.</li><li id="nosql_03_0014__li33745154153336">A tag consists of a key and value. You can add only one value for each key. For details about the naming rules of tag keys and tag values, see <a href="#nosql_03_0014__table197401426182516">Table 1</a>.</li><li id="nosql_03_0014__li16257494184716">Up to <span id="nosql_03_0014__text428813208549"></span><span id="nosql_03_0014__text194022310549">20</span> tags can be added for each instance.</li></ul>
<div class="tablenoborder"><a name="nosql_03_0014__table197401426182516"></a><a name="table197401426182516"></a><table cellpadding="4" cellspacing="0" summary="" id="nosql_03_0014__table197401426182516" frame="border" border="1" rules="all"><caption><b>Table 1 </b>Naming rules</caption><thead align="left"><tr id="nosql_03_0014__row374112610252"><th align="left" class="cellrowborder" valign="top" width="18.54%" id="mcps1.3.2.3.2.4.1.1"><p id="nosql_03_0014__p674122692511">Parameter</p>
</th>
@ -33,14 +33,14 @@
</table>
</div>
</div>
<div class="section" id="nosql_03_0014__section2359182316361"><h4 class="sectiontitle">Adding a Tag</h4><ol id="nosql_03_0014__ol5359172343612"><li id="nosql_03_0014__li1374519431356"><span><a href="nosql_login.html">Log in to the GeminiDB console.</a></span></li><li id="nosql_03_0014__li24670818113751"><span>On the <strong id="nosql_03_0014__b11659172762818">Instances</strong> page, click the name of the target instance to go to the <strong id="nosql_03_0014__b1365902712811">Basic Information</strong> page.</span></li><li id="nosql_03_0014__li174993116615"><span>In the navigation pane on the left, click <span class="uicontrol" id="nosql_03_0014__uicontrol17987141794610"><b>Tags</b></span>.</span></li><li id="nosql_03_0014__li3353879811230"><span>On the <span class="uicontrol" id="nosql_03_0014__uicontrol1874550010184218"><b>Tags</b></span> page, click <span class="uicontrol" id="nosql_03_0014__uicontrol202491323144718"><b>Add Tag</b></span>. In the displayed dialog box, enter a tag key and value, and click <span class="uicontrol" id="nosql_03_0014__uicontrol1307702785184613"><b>OK</b></span>.</span></li><li id="nosql_03_0014__li60539872152925"><span>View and manage tags on the <strong id="nosql_03_0014__b842352706112415">Tags</strong> page.</span></li></ol>
<div class="section" id="nosql_03_0014__section2359182316361"><h4 class="sectiontitle">Adding a Tag</h4><ol id="nosql_03_0014__ol5359172343612"><li id="nosql_03_0014__li1374519431356"><span><a href="nosql_login.html">Log in to the GeminiDB console</a>.</span></li><li id="nosql_03_0014__li24670818113751"><span>On the <strong id="nosql_03_0014__b36299311284835">Instances</strong> page, click the target instance. The <strong id="nosql_03_0014__b33323282884835">Basic Information</strong> page is displayed.</span></li><li id="nosql_03_0014__li174993116615"><span>In the navigation pane on the left, click <span class="uicontrol" id="nosql_03_0014__uicontrol17987141794610"><b>Tags</b></span>.</span></li><li id="nosql_03_0014__li3353879811230"><span>On the <span class="uicontrol" id="nosql_03_0014__uicontrol1874550010184218"><b>Tags</b></span> page, click <span class="uicontrol" id="nosql_03_0014__uicontrol202491323144718"><b>Add Tag</b></span>. In the displayed dialog box, enter a tag key and value, and click <span class="uicontrol" id="nosql_03_0014__uicontrol1307702785184613"><b>OK</b></span>.</span></li><li id="nosql_03_0014__li60539872152925"><span>View and manage tags on the <strong id="nosql_03_0014__b842352706112415">Tags</strong> page.</span></li></ol>
</div>
<div class="section" id="nosql_03_0014__section635902343611"><h4 class="sectiontitle">Editing a Tag</h4><ol id="nosql_03_0014__ol43606230360"><li id="nosql_03_0014__li65102056556"><span><a href="nosql_login.html">Log in to the GeminiDB console.</a></span></li><li id="nosql_03_0014__li2667041916141"><span>On the <strong id="nosql_03_0014__b1394113910329">Instances</strong> page, click the name of the target instance to go to the <strong id="nosql_03_0014__b1395103917322">Basic Information</strong> page.</span></li><li id="nosql_03_0014__li15532155318235"><span>In the navigation pane on the left, click <span class="uicontrol" id="nosql_03_0014__uicontrol18562282465"><b>Tags</b></span>.</span></li><li id="nosql_03_0014__li64121748162643"><span>On the <span class="uicontrol" id="nosql_03_0014__uicontrol603655867151041"><b>Tags</b></span> page, locate the tag to be edited and click <span class="uicontrol" id="nosql_03_0014__uicontrol17467135384816"><b>Edit</b></span> in the <strong id="nosql_03_0014__b842352706112435">Operation</strong> column. In the displayed dialog box, change the tag value and click <span class="uicontrol" id="nosql_03_0014__uicontrol634740122121612"><b>OK</b></span>.</span><p><p id="nosql_03_0014__p18846056121019">Only the tag value can be edited when editing a tag.</p>
<div class="section" id="nosql_03_0014__section635902343611"><h4 class="sectiontitle">Editing a Tag</h4><ol id="nosql_03_0014__ol43606230360"><li id="nosql_03_0014__li65102056556"><span><a href="nosql_login.html">Log in to the GeminiDB console</a>.</span></li><li id="nosql_03_0014__li2667041916141"><span>On the <strong id="nosql_03_0014__b75255655984835">Instances</strong> page, click the target instance. The <strong id="nosql_03_0014__b30730632984835">Basic Information</strong> page is displayed.</span></li><li id="nosql_03_0014__li15532155318235"><span>In the navigation pane on the left, click <span class="uicontrol" id="nosql_03_0014__uicontrol18562282465"><b>Tags</b></span>.</span></li><li id="nosql_03_0014__li64121748162643"><span>On the <span class="uicontrol" id="nosql_03_0014__uicontrol603655867151041"><b>Tags</b></span> page, locate the tag to be edited and click <span class="uicontrol" id="nosql_03_0014__uicontrol17467135384816"><b>Edit</b></span> in the <strong id="nosql_03_0014__b842352706112435">Operation</strong> column. In the displayed dialog box, change the tag value and click <span class="uicontrol" id="nosql_03_0014__uicontrol634740122121612"><b>OK</b></span>.</span><p><p id="nosql_03_0014__p18846056121019">Only the tag value can be edited when editing a tag.</p>
</p></li><li id="nosql_03_0014__li1611816116355"><span>View and manage tags on the <strong id="nosql_03_0014__b872755975318">Tags</strong> page.</span></li></ol>
</div>
<div class="section" id="nosql_03_0014__section15360623153611"><h4 class="sectiontitle">Deleting a Tag</h4><ol id="nosql_03_0014__ol7360152312366"><li id="nosql_03_0014__li7542281614"><span><a href="nosql_login.html">Log in to the GeminiDB console.</a></span></li><li id="nosql_03_0014__li425579216842"><span>On the <strong id="nosql_03_0014__b172927558289">Instances</strong> page, click the name of the target instance to go to the <strong id="nosql_03_0014__b12932055152812">Basic Information</strong> page.</span></li><li id="nosql_03_0014__li194071459142311"><span>In the navigation pane on the left, click <span class="uicontrol" id="nosql_03_0014__uicontrol8798152034620"><b>Tags</b></span>.</span></li><li id="nosql_03_0014__li1546527416842"><span>On the <span class="uicontrol" id="nosql_03_0014__uicontrol490988278122017"><b>Tags</b></span> page, locate the tag to be deleted and click <span class="uicontrol" id="nosql_03_0014__uicontrol307071211122017"><b>Delete</b></span> in the <strong id="nosql_03_0014__b61204432715310">Operation</strong> column. In the displayed dialog box, click <span class="uicontrol" id="nosql_03_0014__uicontrol1895435447122017"><b>Yes</b></span>.</span></li><li id="nosql_03_0014__li4831495916730"><span>After a tag has been deleted, it will not be displayed on the <strong id="nosql_03_0014__b1050953301112543">Tags</strong> page.</span></li></ol>
<div class="section" id="nosql_03_0014__section15360623153611"><h4 class="sectiontitle">Deleting a Tag</h4><ol id="nosql_03_0014__ol7360152312366"><li id="nosql_03_0014__li7542281614"><span><a href="nosql_login.html">Log in to the GeminiDB console</a>.</span></li><li id="nosql_03_0014__li425579216842"><span>On the <strong id="nosql_03_0014__b22874848384835">Instances</strong> page, click the target instance. The <strong id="nosql_03_0014__b148245703884835">Basic Information</strong> page is displayed.</span></li><li id="nosql_03_0014__li194071459142311"><span>In the navigation pane on the left, click <span class="uicontrol" id="nosql_03_0014__uicontrol8798152034620"><b>Tags</b></span>.</span></li><li id="nosql_03_0014__li1546527416842"><span>On the <span class="uicontrol" id="nosql_03_0014__uicontrol490988278122017"><b>Tags</b></span> page, locate the tag to be deleted and click <span class="uicontrol" id="nosql_03_0014__uicontrol307071211122017"><b>Delete</b></span> in the <strong id="nosql_03_0014__b61204432715310">Operation</strong> column. In the displayed dialog box, click <span class="uicontrol" id="nosql_03_0014__uicontrol1895435447122017"><b>Yes</b></span>.</span></li><li id="nosql_03_0014__li4831495916730"><span>After a tag has been deleted, it will not be displayed on the <strong id="nosql_03_0014__b1050953301112543">Tags</strong> page.</span></li></ol>
</div>
<div class="section" id="nosql_03_0014__section0260114175017"><h4 class="sectiontitle">Searching an Instance by Tag</h4><ol id="nosql_03_0014__ol528251920502"><li id="nosql_03_0014__li4939114913164"><span><a href="nosql_login.html">Log in to the GeminiDB console.</a></span></li><li id="nosql_03_0014__li56671823135018"><span>On the <strong id="nosql_03_0014__b1689713552917">Instances</strong> page, click <strong id="nosql_03_0014__b12898165132915">Search by Tag</strong> in the upper right corner of the instance list.</span></li><li id="nosql_03_0014__li1692516132173"><span>Enter the key or value of the tag to be queried and click <strong id="nosql_03_0014__b112701324195019">Search</strong> to query the instance associated with the tag.</span></li></ol>
<div class="section" id="nosql_03_0014__section0260114175017"><h4 class="sectiontitle">Searching an Instance by Tag</h4><ol id="nosql_03_0014__ol528251920502"><li id="nosql_03_0014__li4939114913164"><span><a href="nosql_login.html">Log in to the GeminiDB console</a>.</span></li><li id="nosql_03_0014__li56671823135018"><span>On the <strong id="nosql_03_0014__b1689713552917">Instances</strong> page, click <strong id="nosql_03_0014__b12898165132915">Search by Tag</strong> in the upper right corner of the instance list.</span></li><li id="nosql_03_0014__li1692516132173"><span>Enter the key or value of the tag to be queried and click <strong id="nosql_03_0014__b112701324195019">Search</strong> to query the instance associated with the tag.</span></li></ol>
</div>
</div>
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<a name="nosql_03_0026"></a><a name="nosql_03_0026"></a>
<h1 class="topictitle1">Changing a DB Instance Class</h1>
<h1 class="topictitle1">Changing the CPU and Memory of an Instance</h1>
<div id="body1577171789882"><div class="section" id="nosql_03_0026__section38106127132942"><h4 class="sectiontitle">Scenarios</h4><p id="nosql_03_0026__p798814288593">This section describes how to change the CPU or memory of your instance to suit your service requirements.</p>
</div>
<div class="section" id="nosql_03_0026__section11221015172416"><h4 class="sectiontitle">Precautions</h4><ul id="nosql_03_0026__ul13256121105713"><li id="nosql_03_0026__li11728940182417">Instances can be scaled up or down.</li><li id="nosql_03_0026__li57282409242">Services will be interrupted for 5 to 10 minutes when you change DB instance CPU or memory, so you are advised to perform these operations during off-peak hours.</li><li id="nosql_03_0026__li12611729206">You are not advised to perform DDL operations when changing the CPU and memory.<div class="note" id="nosql_03_0026__note89669203416"><img src="public_sys-resources/note_3.0-en-us.png"><span class="notetitle"> </span><div class="notebody"><p id="nosql_03_0026__p1696617283413">A data definition language (DDL) is a syntax for defining data structures and database objects. Common examples of DDL statements include CREATE, ALTER, and DROP. DDL is used to create, modify, and delete database objects, such as tables, indexes, views, functions, stored procedures, and triggers.</p>
<div class="section" id="nosql_03_0026__section11221015172416"><h4 class="sectiontitle">Usage Notes</h4><ul id="nosql_03_0026__ul13256121105713"><li id="nosql_03_0026__li11728940182417">Instances can be scaled up or down.</li><li id="nosql_03_0026__li57282409242">Services will be interrupted for 5 to 10 minutes when you change DB instance CPU or memory, so you are advised to perform these operations during off-peak hours.</li><li id="nosql_03_0026__li12611729206">You are not advised to perform DDL operations when changing the CPU and memory.<div class="note" id="nosql_03_0026__note89669203416"><img src="public_sys-resources/note_3.0-en-us.png"><span class="notetitle"> </span><div class="notebody"><p id="nosql_03_0026__p1696617283413">A data definition language (DDL) is a syntax for defining data structures and database objects. Common examples of DDL statements include CREATE, ALTER, and DROP. DDL is used to create, modify, and delete database objects, such as tables, indexes, views, functions, stored procedures, and triggers.</p>
</div></div>
</li></ul>
</div>
<div class="section" id="nosql_03_0026__section1114123271918"><h4 class="sectiontitle">Procedure</h4><ol id="nosql_03_0026__ol1539545282314"><li id="nosql_03_0026__li1374519431356"><span><a href="nosql_login.html">Log in to the GeminiDB console.</a></span></li><li id="nosql_03_0026__li1871461413595"><span>On the <strong id="nosql_03_0026__b1453171322319">Instances</strong> page, locate the target instance and click its name.</span></li><li id="nosql_03_0026__l3af6a9cc8c404c93b5c915fc46a3aaac"><span>In the in <strong id="nosql_03_0026__b1815633755614">DB Information</strong> area on the <strong id="nosql_03_0026__b17845104010566">Basic Information</strong> page, click <strong id="nosql_03_0026__b16153154520565">Change</strong> next to the <strong id="nosql_03_0026__b17935184819562">Specifications</strong> field.</span></li><li id="nosql_03_0026__li1839625222311"><span>On the displayed page, select the desired vCPUs and memory and click <strong id="nosql_03_0026__b54778538206">Next</strong>.</span></li><li id="nosql_03_0026__li103961052112310"><span>On the displayed page, confirm the specifications.</span><p><ul id="nosql_03_0026__ul15396552132312"><li id="nosql_03_0026__li839615216237">If you need to modify your settings, click <strong id="nosql_03_0026__b1936610306501">Previous</strong> to go back to the page where you specify details.</li><li id="nosql_03_0026__li5396105220234">If you do not need to modify your settings, click <strong id="nosql_03_0026__b122490402500">Submit</strong>.</li></ul>
</p></li><li id="nosql_03_0026__li1839755210230"><span>View the DB instance class change result.</span><p><p id="nosql_03_0026__p871435315404">Go to the <strong id="nosql_03_0026__b14701925182510">Basic Information</strong> page and in the <strong id="nosql_03_0026__b1071172532519">Specifications</strong> area you can see the new specifications.</p>
<div class="section" id="nosql_03_0026__section1114123271918"><h4 class="sectiontitle">Procedure</h4><ol id="nosql_03_0026__ol1539545282314"><li id="nosql_03_0026__li1374519431356"><span><a href="nosql_login.html">Log in to the GeminiDB console</a>.</span></li><li id="nosql_03_0026__li1871461413595"><span>On the <strong id="nosql_03_0026__b012754514916">Instances</strong> page, click the target instance name.</span></li><li id="nosql_03_0026__l3af6a9cc8c404c93b5c915fc46a3aaac"><span>In the in <strong id="nosql_03_0026__b1815633755614">DB Information</strong> area on the <strong id="nosql_03_0026__b17845104010566">Basic Information</strong> page, click <strong id="nosql_03_0026__b16153154520565">Change</strong> next to the <strong id="nosql_03_0026__b17935184819562">Specifications</strong> field.</span></li><li id="nosql_03_0026__li1839625222311"><span>On the displayed page, select the desired vCPUs and memory and click <strong id="nosql_03_0026__b54778538206">Next</strong>.</span></li><li id="nosql_03_0026__li103961052112310"><span>On the displayed page, confirm the specifications.</span><p><ul id="nosql_03_0026__ul15396552132312"><li id="nosql_03_0026__li839615216237">If you need to modify your settings, click <strong id="nosql_03_0026__b1936610306501">Previous</strong> to go back to the page where you specify details.</li><li id="nosql_03_0026__li5396105220234">If you do not need to modify your settings, click <strong id="nosql_03_0026__b122490402500">Submit</strong>.</li></ul>
</p></li><li id="nosql_03_0026__li1839755210230"><span>Check the change results.</span><p><p id="nosql_03_0026__p871435315404">Go to the <strong id="nosql_03_0026__b14701925182510">Basic Information</strong> page and in the <strong id="nosql_03_0026__b1071172532519">Specifications</strong> area you can see the new specifications.</p>
</p></li></ol>
</div>
<div class="section" id="nosql_03_0026__section175628543196"><h4 class="sectiontitle">Method 2</h4><ol id="nosql_03_0026__ol1574795881912"><li id="nosql_03_0026__li1434816932014"><span><a href="nosql_login.html">Log in to the GeminiDB console.</a></span></li><li id="nosql_03_0026__li166191113205"><span>On the <strong id="nosql_03_0026__b7794105175618">Instances</strong> page, locate the instance whose specifications you want to change and choose <strong id="nosql_03_0026__b879465115611">Change Specifications</strong> in the <strong id="nosql_03_0026__b879435165616">Operation</strong> column.</span></li><li id="nosql_03_0026__li0863136162316"><span>On the displayed page, select the desired vCPUs and memory and click <strong id="nosql_03_0026__b1211983691313">Next</strong>.</span></li><li id="nosql_03_0026__li1086313662316"><span>On the displayed page, confirm the specifications.</span><p><ul id="nosql_03_0026__en-us_topic_0000001092506824_ul15396552132312"><li id="nosql_03_0026__en-us_topic_0000001092506824_li839615216237">If you need to modify your settings, click <strong id="nosql_03_0026__b71044185">Previous</strong> to go back to the page where you specify details.</li><li id="nosql_03_0026__en-us_topic_0000001092506824_li5396105220234">If you do not need to modify your settings, click <strong id="nosql_03_0026__b1087608737">Submit</strong>.</li></ul>
</p></li><li id="nosql_03_0026__li286315614239"><span>View the DB instance class change result.</span><p><p id="nosql_03_0026__en-us_topic_0000001092506824_p871435315404">Go to the <strong id="nosql_03_0026__b2594155910258">Basic Information</strong> page and in the <strong id="nosql_03_0026__b659565922515">Specifications</strong> area you can see the new specifications.</p>
<div class="section" id="nosql_03_0026__section175628543196"><h4 class="sectiontitle">Method 2</h4><ol id="nosql_03_0026__ol1574795881912"><li id="nosql_03_0026__li1434816932014"><span><a href="nosql_login.html">Log in to the GeminiDB console</a>.</span></li><li id="nosql_03_0026__li166191113205"><span>On the <strong id="nosql_03_0026__b7794105175618">Instances</strong> page, locate the instance whose specifications you want to change and choose <strong id="nosql_03_0026__b879465115611">Change Specifications</strong> in the <strong id="nosql_03_0026__b879435165616">Operation</strong> column.</span></li><li id="nosql_03_0026__li0863136162316"><span>On the displayed page, select the desired vCPUs and memory and click <strong id="nosql_03_0026__b1211983691313">Next</strong>.</span></li><li id="nosql_03_0026__li1086313662316"><span>On the displayed page, confirm the specifications.</span><p><ul id="nosql_03_0026__en-us_topic_0000001092506824_ul15396552132312"><li id="nosql_03_0026__en-us_topic_0000001092506824_li839615216237">If you need to modify your settings, click <strong id="nosql_03_0026__b2046316094">Previous</strong> to go back to the page where you specify details.</li><li id="nosql_03_0026__en-us_topic_0000001092506824_li5396105220234">If you do not need to modify your settings, click <strong id="nosql_03_0026__b810816171569">Submit</strong>.</li></ul>
</p></li><li id="nosql_03_0026__li286315614239"><span>Check the change results.</span><p><p id="nosql_03_0026__en-us_topic_0000001092506824_p871435315404">Go to the <strong id="nosql_03_0026__b2594155910258">Basic Information</strong> page and in the <strong id="nosql_03_0026__b659565922515">Specifications</strong> area you can see the new specifications.</p>
</p></li></ol>
</div>
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<h1 class="topictitle1">Change History</h1>
<div id="body1589870068438">
<div class="tablenoborder"><table cellpadding="4" cellspacing="0" summary="" id="nosql_04_change_history__table104697148155" frame="border" border="1" rules="all"><thead align="left"><tr id="nosql_04_change_history__row144693142159"><th align="left" class="cellrowborder" valign="top" width="30.37%" id="mcps1.3.1.1.3.1.1"><p id="nosql_04_change_history__p1446911412151"><strong id="nosql_04_change_history__b928921815113">Released On</strong></p>
<div class="tablenoborder"><table cellpadding="4" cellspacing="0" summary="" id="nosql_04_change_history__table104697148155" frame="border" border="1" rules="all"><thead align="left"><tr id="nosql_04_change_history__row144693142159"><th align="left" class="cellrowborder" valign="top" width="30.37%" id="mcps1.3.1.1.3.1.1"><p id="nosql_04_change_history__p1446911412151">Released</p>
</th>
<th align="left" class="cellrowborder" valign="top" width="69.63000000000001%" id="mcps1.3.1.1.3.1.2"><p id="nosql_04_change_history__p446921411152"><strong id="nosql_04_change_history__b11230142019111">Description</strong></p>
<th align="left" class="cellrowborder" valign="top" width="69.63000000000001%" id="mcps1.3.1.1.3.1.2"><p id="nosql_04_change_history__p446921411152">Change History</p>
</th>
</tr>
</thead>
<tbody><tr id="nosql_04_change_history__row694017392613"><td class="cellrowborder" valign="top" width="30.37%" headers="mcps1.3.1.1.3.1.1 "><p id="nosql_04_change_history__p16977317172613">2024-04-30</p>
<tbody><tr id="nosql_04_change_history__row492196114119"><td class="cellrowborder" valign="top" width="30.37%" headers="mcps1.3.1.1.3.1.1 "><p id="nosql_04_change_history__p15928610416">2025-02-28</p>
</td>
<td class="cellrowborder" valign="top" width="69.63000000000001%" headers="mcps1.3.1.1.3.1.2 "><p id="nosql_04_change_history__p180273314264">This issue is the sixth official release.</p>
<p id="nosql_04_change_history__p994016531266">GaussDB NoSQL is changed to GeminiDB.</p>
<td class="cellrowborder" valign="top" width="69.63000000000001%" headers="mcps1.3.1.1.3.1.2 "><p id="nosql_04_change_history__p10923613418">This issue is the ninth official release.</p>
</td>
</tr>
<tr id="nosql_04_change_history__row146291538191214"><td class="cellrowborder" valign="top" width="30.37%" headers="mcps1.3.1.1.3.1.1 "><p id="nosql_04_change_history__p516519488128">2024-11-30</p>
</td>
<td class="cellrowborder" valign="top" width="69.63000000000001%" headers="mcps1.3.1.1.3.1.2 "><p id="nosql_04_change_history__p1462913810129">This issue is the eighth official release.</p>
</td>
</tr>
<tr id="nosql_04_change_history__row1387432312129"><td class="cellrowborder" valign="top" width="30.37%" headers="mcps1.3.1.1.3.1.1 "><p id="nosql_04_change_history__p1778414310125">2024-08-30</p>
</td>
<td class="cellrowborder" valign="top" width="69.63000000000001%" headers="mcps1.3.1.1.3.1.2 "><p id="nosql_04_change_history__p12874152316129">This issue is the seventh official release, which incorporates the following change:</p>
<p id="nosql_04_change_history__p6944191661317">Added <a href="nosql_increase_storage1.html">Configuring Auto Scale</a>.</p>
</td>
</tr>
<tr id="nosql_04_change_history__row694017392613"><td class="cellrowborder" valign="top" width="30.37%" headers="mcps1.3.1.1.3.1.1 "><p id="nosql_04_change_history__p16977317172613">2024-04-30</p>
</td>
<td class="cellrowborder" valign="top" width="69.63000000000001%" headers="mcps1.3.1.1.3.1.2 "><p id="nosql_04_change_history__p180273314264">This issue is the sixth official release, which incorporates the following change:</p>
<p id="nosql_04_change_history__p994016531266">Changed GaussDB NoSQL to GeminiDB.</p>
</td>
</tr>
<tr id="nosql_04_change_history__row2044455184419"><td class="cellrowborder" valign="top" width="30.37%" headers="mcps1.3.1.1.3.1.1 "><p id="nosql_04_change_history__p18457553447">2020-07-31</p>

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<h1 class="topictitle1">Creating a <span id="en-us_topic_0000001092187220_text1785214811592">GeminiDB Cassandra</span> Instance</h1>
<div id="body8662426"><p id="nosql_06_0003__en-us_topic_0000001092187220_p767855133318">This section describes how to <span id="nosql_06_0003__en-us_topic_0000001092187220_text15829162510278"></span><span id="nosql_06_0003__en-us_topic_0000001092187220_text19629143012298">create</span> a DB instance that is compatible with Cassandra APIs.</p>
<div class="section" id="nosql_06_0003__en-us_topic_0000001092187220_section81101358184718"><h4 class="sectiontitle">Procedure</h4><ol id="nosql_06_0003__en-us_topic_0000001092187220_ol07671952487"><li id="nosql_06_0003__en-us_topic_0000001092187220_li2057364417214"><span>Log in to the GeminiDB console by following <a href="nosql_login.html">Logging In to the GeminiDB Console</a>.</span></li><li id="nosql_06_0003__en-us_topic_0000001092187220_l3af6a9cc8c404c93b5c915fc46a3aaac"><span>On the <strong id="nosql_06_0003__b1492201455217">Instances</strong> page, click <span class="uicontrol" id="nosql_06_0003__en-us_topic_0000001092187220_uicontrol1611517612546"><b><span id="nosql_06_0003__en-us_topic_0000001092187220_text35861855184414">Create DB Instance</span><span id="nosql_06_0003__en-us_topic_0000001092187220_text177246813457"></span></b></span>.</span></li><li id="nosql_06_0003__en-us_topic_0000001092187220_li102231416563"><span>On the displayed page, select your DB instance specifications and click <span class="uicontrol" id="nosql_06_0003__en-us_topic_0000001092187220_uicontrol11770145872313"><b><span id="nosql_06_0003__en-us_topic_0000001092187220_text37991236204716">Create Now</span><span id="nosql_06_0003__en-us_topic_0000001092187220_text725184584718"></span></b></span>.</span><p>
<div class="section" id="nosql_06_0003__en-us_topic_0000001092187220_section81101358184718"><h4 class="sectiontitle">Procedure</h4><ol id="nosql_06_0003__en-us_topic_0000001092187220_ol07671952487"><li id="nosql_06_0003__en-us_topic_0000001092187220_li2057364417214"><span><a href="nosql_login.html">Log in to the GeminiDB console</a>.</span></li><li id="nosql_06_0003__en-us_topic_0000001092187220_l3af6a9cc8c404c93b5c915fc46a3aaac"><span>On the <strong id="nosql_06_0003__b1492201455217">Instances</strong> page, click <span class="uicontrol" id="nosql_06_0003__en-us_topic_0000001092187220_uicontrol1611517612546"><b><span id="nosql_06_0003__en-us_topic_0000001092187220_text35861855184414">Create DB Instance</span><span id="nosql_06_0003__en-us_topic_0000001092187220_text177246813457"></span></b></span>.</span></li><li id="nosql_06_0003__en-us_topic_0000001092187220_li102231416563"><span>On the displayed page, select your DB instance specifications and click <span class="uicontrol" id="nosql_06_0003__en-us_topic_0000001092187220_uicontrol11770145872313"><b><span id="nosql_06_0003__en-us_topic_0000001092187220_text37991236204716">Create Now</span><span id="nosql_06_0003__en-us_topic_0000001092187220_text725184584718"></span></b></span>.</span><p>
<div class="tablenoborder"><table cellpadding="4" cellspacing="0" summary="" id="nosql_06_0003__en-us_topic_0000001092187220_table599010448595" frame="border" border="1" rules="all"><caption><b>Table 1 </b>Basic information</caption><thead align="left"><tr id="nosql_06_0003__en-us_topic_0000001092187220_row199896445597"><th align="left" class="cellrowborder" valign="top" width="27%" id="mcps1.3.2.2.3.2.1.2.3.1.1"><p id="nosql_06_0003__en-us_topic_0000001092187220_p16989134411599">Parameter</p>
</th>
<th align="left" class="cellrowborder" valign="top" width="73%" id="mcps1.3.2.2.3.2.1.2.3.1.2"><p id="nosql_06_0003__en-us_topic_0000001092187220_p8989104412598">Description</p>
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<tbody><tr id="nosql_06_0003__en-us_topic_0000001092187220_row69911447592"><td class="cellrowborder" valign="top" width="28.000000000000004%" headers="mcps1.3.2.2.3.2.2.2.3.1.1 "><p id="nosql_06_0003__en-us_topic_0000001092187220_p12990114415913">Instance Specifications</p>
</td>
<td class="cellrowborder" valign="top" width="72%" headers="mcps1.3.2.2.3.2.2.2.3.1.2 "><p id="nosql_06_0003__en-us_topic_0000001092187220_p199901344115918">The CPU and memory of a DB instance.</p>
<p id="nosql_06_0003__en-us_topic_0000001092187220_p1199034455913">Different performance specifications support different numbers of connections and maximum IOPSs. Select CPU and memory specifications based on your service requirements.</p>
<p id="nosql_06_0003__en-us_topic_0000001092187220_p11748102384512">After a DB instance is created, you can change its CPU and memory. For details, see <a href="nosql_03_0026.html">Changing a DB Instance Class</a>.</p>
<p id="nosql_06_0003__en-us_topic_0000001092187220_p1199034455913">Performance specifications vary depending on the connections and maximum IOPS.</p>
<p id="nosql_06_0003__en-us_topic_0000001092187220_p11748102384512">After a DB instance is created, you can change its CPU and memory. For details, see <a href="nosql_03_0026.html">Changing the CPU and Memory of an Instance</a>.</p>
</td>
</tr>
<tr id="nosql_06_0003__en-us_topic_0000001092187220_row15071155114714"><td class="cellrowborder" valign="top" width="28.000000000000004%" headers="mcps1.3.2.2.3.2.2.2.3.1.1 "><p id="nosql_06_0003__en-us_topic_0000001092187220_p09911944135911">Nodes</p>
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</td>
<td class="cellrowborder" valign="top" width="72%" headers="mcps1.3.2.2.3.2.2.2.3.1.2 "><p id="nosql_06_0003__en-us_topic_0000001092187220_p9991544125920">Storage space depends on the instance specifications. The minimum storage space is 10 GB, and the storage space you set must be an integer. You can select a minimum of 10 GB each time.</p>
<p id="nosql_06_0003__en-us_topic_0000001092187220_p0276103719467">After a DB instance is created, you can scale up its storage space. For details, see <a href="nosql_increase_storage.html">Scaling Up Storage Space</a>.</p>
<p id="nosql_06_0003__p174817512617">When configuring storage space of a GeminiDB Cassandra instance, you are advised to enable autoscaling. Then set trigger conditions and limit of autoscaling. When trigger conditions are met, the system will scale up the storage to ensure that the instance keeps available. </p>
<p id="nosql_06_0003__p174817512617">When configuring storage space of a GeminiDB Cassandra instance, you are advised to enable autoscaling. Then set trigger conditions and limit of autoscaling. After autoscaling is triggered, the system automatically scales up the storage to ensure that the instance has sufficient storage and keeps available. </p>
<div class="fignone" id="nosql_06_0003__fig69401752125613"><span class="figcap"><b>Figure 1 </b>Auto Scale</span><br><span><img id="nosql_06_0003__image3940205255619" src="en-us_image_0000002067697405.png"></span></div>
<p id="nosql_06_0003__p213624512166">Pay attention to the following parameters:</p>
<ul id="nosql_06_0003__ul14921759434"><li id="nosql_06_0003__li849285916316"><strong id="nosql_06_0003__b44681135184411">Trigger If Available Storage Drops To</strong>: storage threshold for triggering autoscaling. When the available storage usage drops to this value or the available storage space drops to 10 GB, autoscaling is triggered.</li><li id="nosql_06_0003__li1460452210517"><strong id="nosql_06_0003__b438863211459">Increase By</strong>: percentage that your instance storage will be scaled up at. If the increased storage is not a multiple of 10 GB, the system will round it up to the nearest multiple of 10 GB. At least 100 GB is added each time.</li><li id="nosql_06_0003__li18291632064"><strong id="nosql_06_0003__b62521448161015">Storage Limit</strong>: maximum amount that the system can automatically scale up an instance's storage space to. The value must be no less than the current storage of your instance and cannot exceed the storage space upper limit defined by your instance specifications.</li></ul>
<ul id="nosql_06_0003__ul14921759434"><li id="nosql_06_0003__li849285916316"><strong id="nosql_06_0003__b44681135184411">Trigger If Available Storage Drops To</strong>: storage threshold for triggering autoscaling. When the available storage usage drops to this value or the available storage space drops to 10 GB, autoscaling is triggered.</li><li id="nosql_06_0003__li1460452210517"><strong id="nosql_06_0003__b438863211459">Increase By</strong>: percentage that your instance storage will be scaled up at. If the increased storage is not a multiple of 10 GB, the system will round it up to the nearest multiple of 10 GB. At least 100 GB is added each time.</li><li id="nosql_06_0003__li18291632064"><strong id="nosql_06_0003__b195114456528">Storage Limit</strong>: maximum amount that the system can automatically scale up an instance's storage space to. The value must be no less than the current storage of your instance and cannot exceed the storage space upper limit defined by your instance specifications.</li></ul>
<div class="note" id="nosql_06_0003__note155264132318"><span class="notetitle"> NOTE: </span><div class="notebody"><ul id="nosql_06_0003__ul256618914269"><li id="nosql_06_0003__li1656620916265">Once autoscaling is enabled, an agency will be created and fees will be automatically deducted.</li><li id="nosql_06_0003__li1589771122612">You can enable autoscaling after an instance is created. For details, see <a href="nosql_increase_storage1.html">Configuring Auto Scale</a>.</li></ul>
</div></div>
</td>
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</td>
<td class="cellrowborder" valign="top" width="73%" headers="mcps1.3.2.2.3.2.5.2.3.1.2 "><p id="nosql_06_0003__en-us_topic_0000001092187220_p874773375418">The setting is optional. Adding tags helps you better identify and manage your DB instances. Up to <span id="nosql_06_0003__en-us_topic_0000001092187220_text1010794017439"></span><span id="nosql_06_0003__en-us_topic_0000001092187220_text4600345114318">20</span> tags can be added for each instance.</p>
<p id="nosql_06_0003__en-us_topic_0000001092187220_en-us_topic_0085335437_p791635119297">A tag is composed of a key-value pair.</p>
<ul id="nosql_06_0003__en-us_topic_0000001092187220_en-us_topic_0085335437_ul73781026122214"><li id="nosql_06_0003__en-us_topic_0000001092187220_en-us_topic_0085335437_li103790268221">Key: Mandatory if the DB instance is going to be tagged<p id="nosql_06_0003__en-us_topic_0000001092187220_p17237151272415"><a name="nosql_06_0003__en-us_topic_0000001092187220_en-us_topic_0085335437_li103790268221"></a><a name="en-us_topic_0000001092187220_en-us_topic_0085335437_li103790268221"></a>Each tag key must be unique for each DB instance. The key can include up to 36 characters, including digits, letters, underscores (_), and hyphens (-).</p>
<ul id="nosql_06_0003__en-us_topic_0000001092187220_en-us_topic_0085335437_ul73781026122214"><li id="nosql_06_0003__en-us_topic_0000001092187220_en-us_topic_0085335437_li103790268221">Key: Mandatory if the DB instance is going to be tagged<p id="nosql_06_0003__en-us_topic_0000001092187220_p17237151272415"><a name="nosql_06_0003__en-us_topic_0000001092187220_en-us_topic_0085335437_li103790268221"></a><a name="en-us_topic_0000001092187220_en-us_topic_0085335437_li103790268221"></a>Each tag key is unique for each instance. The key can include up to 36 characters, including digits, letters, underscores (_), and hyphens (-).</p>
</li><li id="nosql_06_0003__en-us_topic_0000001092187220_en-us_topic_0085335437_li1240572613229">Value: Optional if the DB instance is going to be tagged<p id="nosql_06_0003__en-us_topic_0000001092187220_p79231957152518"><a name="nosql_06_0003__en-us_topic_0000001092187220_en-us_topic_0085335437_li1240572613229"></a><a name="en-us_topic_0000001092187220_en-us_topic_0085335437_li1240572613229"></a>The value can contain up to 43 characters, including digits, letters, underscores (_), periods (.), and hyphens (-).</p>
</li></ul>
<p id="nosql_06_0003__en-us_topic_0000001092187220_p127623466544">After a DB instance is created, you can view its tag details on the <strong id="nosql_06_0003__en-us_topic_0000001092187220_b1468912272147">Tags</strong> tab. In addition, you can add, modify, and delete tags for existing DB instances. For details, see <a href="nosql_03_0014.html">Managing Tags</a>.</p>

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</li></ol>
</div>
</div>
<div class="section" id="nosql_increase_storage1__section6787733202313"><h4 class="sectiontitle">Precautions</h4><ul id="nosql_increase_storage1__ul979225822314"><li id="nosql_increase_storage1__li7486533103711">The instance is in the <strong id="nosql_increase_storage1__b1758214434257">Available</strong> status.</li><li id="nosql_increase_storage1__li1656620916265">Once autoscaling is enabled, an agency will be created and fees will be automatically deducted.</li></ul>
<div class="section" id="nosql_increase_storage1__section6787733202313"><h4 class="sectiontitle">Usage Notes</h4><ul id="nosql_increase_storage1__ul979225822314"><li id="nosql_increase_storage1__li7486533103711">The instance is in the <strong id="nosql_increase_storage1__b1758214434257">Available</strong> status.</li><li id="nosql_increase_storage1__li1656620916265">Once autoscaling is enabled, an agency will be created and fees will be automatically deducted.</li></ul>
</div>
<div class="section" id="nosql_increase_storage1__section1471414515508"><h4 class="sectiontitle">Automatically Scaling Up Storage of a Single Instance</h4><ol id="nosql_increase_storage1__ol73793917323"><li id="nosql_increase_storage1__li12289164375618"><span>Log in to the GeminiDB console by following <a href="nosql_login.html">Logging In to the GeminiDB Console</a>.</span></li><li id="nosql_increase_storage1__li1871461413595"><span>On the <strong id="nosql_increase_storage1__b11717133412281">Instances</strong> page, click the instance. The <strong id="nosql_increase_storage1__b1771983422811">Basic Information</strong> page is displayed.</span></li><li id="nosql_increase_storage1__li178441628173319"><span>In the <strong id="nosql_increase_storage1__b942063712283">Storage Space</strong> area, click <strong id="nosql_increase_storage1__b142517375283">Auto Scale</strong>.</span><p><div class="fignone" id="nosql_increase_storage1__fig483563674110"><span class="figcap"><b>Figure 1 </b>Auto Scale</span><br><span><img id="nosql_increase_storage1__image75391935104017" src="en-us_image_0000002038307285.png"></span></div>
<div class="section" id="nosql_increase_storage1__section1471414515508"><h4 class="sectiontitle">Automatically Scaling Up Storage of a Single Instance</h4><ol id="nosql_increase_storage1__ol73793917323"><li id="nosql_increase_storage1__li12289164375618"><span><a href="nosql_login.html">Log in to the GeminiDB console</a>.</span></li><li id="nosql_increase_storage1__li1871461413595"><span>On the <strong id="nosql_increase_storage1__b205720434684729">Instances</strong> page, click the target instance. The <strong id="nosql_increase_storage1__b83819534984729">Basic Information</strong> page is displayed.</span></li><li id="nosql_increase_storage1__li178441628173319"><span>In the <strong id="nosql_increase_storage1__b942063712283">Storage Space</strong> area, click <strong id="nosql_increase_storage1__b142517375283">Auto Scale</strong>.</span><p><div class="fignone" id="nosql_increase_storage1__fig483563674110"><span class="figcap"><b>Figure 1 </b>Auto Scale</span><br><span><img id="nosql_increase_storage1__image75391935104017" src="en-us_image_0000002038307285.png"></span></div>
</p></li><li id="nosql_increase_storage1__li145092363616"><span>Toggle on <strong id="nosql_increase_storage1__b115980510288">Auto Scale</strong> and specify the parameters below.</span><p><div class="fignone" id="nosql_increase_storage1__fig1320421164310"><span class="figcap"><b>Figure 2 </b>Configuring autoscaling</span><br><span><img id="nosql_increase_storage1__image1850918314422" src="en-us_image_0000002038188189.png"></span></div>
<div class="tablenoborder"><table cellpadding="4" cellspacing="0" summary="" id="nosql_increase_storage1__table495282015437" frame="border" border="1" rules="all"><caption><b>Table 1 </b>Parameter description</caption><thead align="left"><tr id="nosql_increase_storage1__row3952920124311"><th align="left" class="cellrowborder" valign="top" width="21.709999999999997%" id="mcps1.3.8.2.4.2.2.2.3.1.1"><p id="nosql_increase_storage1__p1895242019430">Parameter</p>
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</div>
</p></li><li id="nosql_increase_storage1__li42929204381"><span>Click <span class="uicontrol" id="nosql_increase_storage1__uicontrol1735802103910"><b>OK</b></span>.</span></li></ol>
</div>
<div class="section" id="nosql_increase_storage1__section187144545010"><h4 class="sectiontitle">Automatically Scaling Up Storage of Multiple Instances In Batches</h4><ol id="nosql_increase_storage1__ol874117561776"><li id="nosql_increase_storage1__li355213167017"><span>Log in to the GeminiDB console by following <a href="nosql_login.html">Logging In to the GeminiDB Console</a>.</span></li><li id="nosql_increase_storage1__li1374216565713"><span>Select instances and click <strong id="nosql_increase_storage1__b64881975412">Auto Scale</strong>.</span><p><div class="fignone" id="nosql_increase_storage1__fig14205104610473"><span class="figcap"><b>Figure 3 </b>Auto Scale</span><br><span><img id="nosql_increase_storage1__image1796618541455" src="en-us_image_0000002038307289.png"></span></div>
<div class="section" id="nosql_increase_storage1__section187144545010"><h4 class="sectiontitle">Automatically Scaling Up Storage of Multiple Instances In Batches</h4><ol id="nosql_increase_storage1__ol874117561776"><li id="nosql_increase_storage1__li355213167017"><span><a href="nosql_login.html">Log in to the GeminiDB console</a>.</span></li><li id="nosql_increase_storage1__li1374216565713"><span>Select instances and click <strong id="nosql_increase_storage1__b64881975412">Auto Scale</strong>.</span><p><div class="fignone" id="nosql_increase_storage1__fig14205104610473"><span class="figcap"><b>Figure 3 </b>Auto Scale</span><br><span><img id="nosql_increase_storage1__image1796618541455" src="en-us_image_0000002038307289.png"></span></div>
</p></li><li id="nosql_increase_storage1__li1974285613717"><span>Select an instance, toggle on <strong id="nosql_increase_storage1__b358013547106">Auto Scale</strong>, and specify the parameters below.</span><p><div class="fignone" id="nosql_increase_storage1__fig169149162487"><span class="figcap"><b>Figure 4 </b>Batch Auto Scale</span><br><span><img id="nosql_increase_storage1__image1562255894615" src="en-us_image_0000002038188193.png"></span></div>
<div class="tablenoborder"><table cellpadding="4" cellspacing="0" summary="" id="nosql_increase_storage1__table674245613718" frame="border" border="1" rules="all"><caption><b>Table 2 </b>Parameter description</caption><thead align="left"><tr id="nosql_increase_storage1__row87421561077"><th align="left" class="cellrowborder" valign="top" width="21.709999999999997%" id="mcps1.3.9.2.3.2.2.2.3.1.1"><p id="nosql_increase_storage1__p574285618712">Parameter</p>
@ -90,7 +90,7 @@
</tr>
<tr id="nosql_increase_storage1__row07425561575"><td class="cellrowborder" valign="top" width="21.709999999999997%" headers="mcps1.3.9.2.3.2.2.2.3.1.1 "><p id="nosql_increase_storage1__p1674225615714">Increase By</p>
</td>
<td class="cellrowborder" valign="top" width="78.29%" headers="mcps1.3.9.2.3.2.2.2.3.1.2 "><p id="nosql_increase_storage1__p1743856474">Percentage of the current storage to be automatically scaled. The value can be <strong id="nosql_increase_storage1__b1726568807">10</strong>, <strong id="nosql_increase_storage1__b1202106001">15</strong>, or <strong id="nosql_increase_storage1__b1867385200">20</strong>. If the value is not a multiple of 10, the value is rounded up. At least 100 GB is added each time.</p>
<td class="cellrowborder" valign="top" width="78.29%" headers="mcps1.3.9.2.3.2.2.2.3.1.2 "><p id="nosql_increase_storage1__p1743856474">Percentage of the current storage to be automatically scaled. The value can be <strong id="nosql_increase_storage1__b479958951">10</strong>, <strong id="nosql_increase_storage1__b508836689">15</strong>, or <strong id="nosql_increase_storage1__b1952408402">20</strong>. If the value is not a multiple of 10, the value is rounded up. At least 100 GB is added each time.</p>
</td>
</tr>
<tr id="nosql_increase_storage1__row1474312568711"><td class="cellrowborder" valign="top" width="21.709999999999997%" headers="mcps1.3.9.2.3.2.2.2.3.1.1 "><p id="nosql_increase_storage1__p13743205619710">Storage Limit</p>