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rds_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
2026-04-23 10:06:18 +00:00
committed by zuul
parent 14cbe51752
commit d0d66eeb73
11 changed files with 25 additions and 20 deletions
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<p id="rds_01_0017__p35731532595">vpc:subnets:get</p>
<p id="rds_01_0017__p75734535595">vpc:securityGroups:get</p>
<p id="rds_01_0017__p019513535373">To create an encrypted instance, configure the KMS Administrator permission for the project.</p>
<div class="p" id="rds_01_0017__p10749164311450">If storage autoscaling is required, you need to <a href="#rds_01_0017__section971814217815">create an agency</a> and grant the IAM user the following actions:<ul id="rds_01_0017__ul1275084384512"><li id="rds_01_0017__li1675024324512">iam:agencies:listAgencies</li><li id="rds_01_0017__li675084314514">iam:agencies:createAgency</li><li id="rds_01_0017__li3750164334518">iam:permissions:listRolesForAgencyOnProject</li><li id="rds_01_0017__li157507434459">iam:permissions:grantRoleToGroupOnProject</li><li id="rds_01_0017__li1975084310459">iam:permissions:grantRoleToAgencyOnProject</li><li id="rds_01_0017__li775074344513">iam:roles:listRoles</li><li id="rds_01_0017__li1675014315453">iam:roles:createRole</li></ul>
</div>
</td>
</tr>
<tr id="rds_01_0017__row119131172358"><td class="cellrowborder" valign="top" width="28.49%" headers="mcps1.3.5.9.2.4.1.1 "><p id="rds_01_0017__p119136177357">Changing DB instance specifications</p>
@ -727,6 +729,11 @@
</table>
</div>
</div>
<div class="section" id="rds_01_0017__section971814217815"><a name="rds_01_0017__section971814217815"></a><a name="section971814217815"></a><h4 class="sectiontitle">Creating an Agency</h4><ol id="rds_01_0017__en-us_topic_0000002215072218_ol12553112814236"><li id="rds_01_0017__en-us_topic_0000002215072218_li2055352862317">Log in to the IAM console.</li><li id="rds_01_0017__en-us_topic_0000002215072218_li1247333712129">Click <strong id="rds_01_0017__b15882226191719">Agencies</strong>. On the displayed page, click <strong id="rds_01_0017__b988252613170">Create Agency</strong>.<div class="p" id="rds_01_0017__p18386718811"><strong id="rds_01_0017__b1112412441837">If storage autoscaling and autoscaling of vCPUs and memory are required, perform the following operations:</strong><ol type="a" id="rds_01_0017__ol89140208120"><li id="rds_01_0017__li129145201514">On the displayed page, set the following parameters and click <strong id="rds_01_0017__b158181451402">OK</strong>. Then, click <strong id="rds_01_0017__b88181352408">Authorize</strong> in the displayed dialog box.<ul id="rds_01_0017__en-us_topic_0000002215072218_ul1739564881610"><li id="rds_01_0017__en-us_topic_0000002215072218_li1663882112"><strong id="rds_01_0017__b614194271916">Agency Name</strong>: Enter <strong id="rds_01_0017__b8141154212198">RDSAccessProjectResource</strong>.</li><li id="rds_01_0017__en-us_topic_0000002215072218_li15395148161612"><strong id="rds_01_0017__b10475821142417">Agency Type</strong>: Select <strong id="rds_01_0017__b047572122413">Cloud service</strong>.</li><li id="rds_01_0017__en-us_topic_0000002215072218_li480720351811"><strong id="rds_01_0017__b1548142932414">Cloud Service</strong>: Select <strong id="rds_01_0017__b1648112919249">Database Service (DBS)</strong>.</li><li id="rds_01_0017__en-us_topic_0000002215072218_li23961248201610"><strong id="rds_01_0017__b137954434250">Validity Period</strong>: Select <strong id="rds_01_0017__b15795124332514">Unlimited</strong>.</li><li id="rds_01_0017__en-us_topic_0000002215072218_li13966486168"><strong id="rds_01_0017__b185311836125719">Description</strong>: Enter <strong id="rds_01_0017__b271005418578">RDSAccessProjectResource allows RDS to access user's project resource</strong>.</li></ul>
</li><li id="rds_01_0017__en-us_topic_0000002215072218_li10881134103510">Enter <strong id="rds_01_0017__b788095092616">DBS</strong> in the search box to start a search, select <strong id="rds_01_0017__b198801650152613">DBS AgencyPolicy</strong>, and click <strong id="rds_01_0017__b19881115017267">Next</strong>.</li><li id="rds_01_0017__en-us_topic_0000002215072218_li17711441142117">By default, the permissions apply to all resources. Click <strong id="rds_01_0017__b1839317507596">OK</strong>.</li></ol>
</div>
</li></ol>
</div>
</div>
<div>
<div class="familylinks">

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<p id="rds_02_0016__p235422104958">Enter the password of the database account if the following information is displayed:</p>
<p id="rds_02_0016__p60970033105748">Password:</p>
<p id="rds_02_0016__p27676562185850">For example, to connect to a DB instance through an SSL connection as user <strong id="rds_02_0016__b12199070102032">root</strong>, run the following command:</p>
<p id="rds_02_0016__p34313000102213"><strong id="rds_02_0016__b34403020105722">psql --no-readline -h 192.168.0.44 -p 5432 "dbname=postgres user=root sslmode=verify-ca sslrootcert=/root/ca.pem"</strong></p>
<p id="rds_02_0016__p1264628011016"><strong id="rds_02_0016__b6249442811020">Password:</strong></p>
<pre class="codeblock" id="rds_02_0016__codeblock210443531513"><strong id="rds_02_0016__b910633516151">psql --no-readline -h 192.168.0.44 -p 5432 "dbname=postgres user=root sslmode=verify-ca sslrootcert=/root/ca.pem"</strong>
<strong id="rds_02_0016__b1010683531512">Password:</strong></pre>
</p></li><li id="rds_02_0016__l8a49eb9117de47e2a5c00711a7369720"><span>The SSL connection is established if information similar to the following is displayed after you log in to the database:</span><p><pre class="screen" id="rds_02_0016__sc2c86d87346640af8c88520b4b2d8dba">SSL connection (protocol: TLSv1.2, cipher: ECDHE-RSA-AES256-GCM-SHA384, bits: 256, compression: off)</pre>
</p></li></ol>
</div>

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<p id="rds_02_0047__p201271427184420">For details, see section <a href="rds_faq_0051.html">How Can I Identify the Validity Period of an SSL Root Certificate?</a></p>
</li><li id="rds_02_0047__lb4018560df604b6099bbff9f1f5c3d79">You can also download the certificate bundle, which contains both the new certificate provided since April 2017 and the old certificate.</li></ul>
</div></div>
</p></li><li id="rds_02_0047__l7bda6239fa2543bc94a47decf26c022e"><span>Connect to the <span id="rds_02_0047__text67611137141618">RDS</span> DB instance. The Linux OS is used as an example.</span><p><p id="rds_02_0047__p825185810369"><strong id="rds_02_0047__b115253592365">mysql -h</strong> &lt;<em id="rds_02_0047__i5525195916365">host</em>&gt; <strong id="rds_02_0047__b95251359123611">-P</strong><em id="rds_02_0047__i155255597364"> &lt;port&gt;</em><strong id="rds_02_0047__b1952518598367"> -u</strong> &lt;<em id="rds_02_0047__i5525155911362">userName</em>&gt;<strong id="rds_02_0047__b9525459113613"> -p</strong><strong id="rds_02_0047__b95258591368"> --ssl-ca=</strong>&lt;<em id="rds_02_0047__i116827143715">caDIR</em>&gt;</p>
</p></li><li id="rds_02_0047__l7bda6239fa2543bc94a47decf26c022e"><span>Connect to the <span id="rds_02_0047__text67611137141618">RDS</span> DB instance. The Linux OS is used as an example.</span><p><pre class="codeblock" id="rds_02_0047__codeblock19304336181611"><strong id="rds_02_0047__b103053367168">mysql -h</strong> &lt;<em id="rds_02_0047__i14305183616168">host</em>&gt; <strong id="rds_02_0047__b8305173671619">-P</strong><em id="rds_02_0047__i9305173691612"> &lt;port&gt;</em><strong id="rds_02_0047__b9305133641610"> -u</strong> &lt;<em id="rds_02_0047__i1830593641616">userName</em>&gt;<strong id="rds_02_0047__b11305113621614"> -p</strong><strong id="rds_02_0047__b16305636191620"> --ssl-ca=</strong>&lt;<em id="rds_02_0047__i8305173613167">caDIR</em>&gt;</pre>
<div class="tablenoborder"><table cellpadding="4" cellspacing="0" summary="" id="rds_02_0047__table385819434338" frame="border" border="1" rules="all"><caption><b>Table 2 </b>Parameter description</caption><thead align="left"><tr id="rds_02_0047__row1285974314331"><th align="left" class="cellrowborder" valign="top" width="28.000000000000004%" id="mcps1.3.4.2.6.2.2.2.3.1.1"><p id="rds_02_0047__p13859124323319"><strong id="rds_02_0047__b963063452415">Parameter</strong></p>
</th>
@ -94,7 +94,7 @@
</table>
</div>
<p id="rds_02_0047__p19893449115">For example, to connect to a DB instance through an SSL connection as user <strong id="rds_02_0047__b4779144513316">root</strong>, run the following command:</p>
<p id="rds_02_0047__p89891445116"><strong id="rds_02_0047__b10989174431116">mysql -h 172.16.0.31 -P 3306 -u root -p --ssl-ca=ca.pem</strong></p>
<pre class="codeblock" id="rds_02_0047__codeblock8457204118164"><strong id="rds_02_0047__b1045714131620">mysql -h 172.16.0.31 -P 3306 -u root -p --ssl-ca=ca.pem</strong></pre>
<p id="rds_02_0047__p1989194411112">Enter the password of the database account if the following information is displayed:</p>
<pre class="screen" id="rds_02_0047__screen1385411851614">Enter password:</pre>
<div class="note" id="rds_02_0047__n41392c346a504e52921addd4b7b0e0b6"><img src="public_sys-resources/note_3.0-en-us.png"><span class="notetitle"> </span><div class="notebody"><p id="rds_02_0047__a4deb7459751d4f18b5720cd3e761ad09">If the connection fails, see <a href="rds_faq_0020.html">What Should I Do If an ECS Cannot Connect to an RDS DB Instance Through a Private Network?</a></p>

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</div>
</div>
<div class="section" id="rds_05_0140__section3437195084312"><h4 class="sectiontitle">Procedure</h4><ol id="rds_05_0140__ol194824585432"><li id="rds_05_0140__li17616348171"><span>Log in to the management console.</span></li><li id="rds_05_0140__li146168481712"><span>Click <span><img id="rds_05_0140__rds_modify_instance_name_en-us_topic_0192953815_image192529212293" src="en-us_image_0000001191211679.png"></span> in the upper left corner and select a region and a project.</span></li><li id="rds_05_0140__li96167481711"><span>Click <strong id="rds_05_0140__rds_modify_instance_name_b171171523153019">Service List</strong>. Under <strong id="rds_05_0140__rds_modify_instance_name_b111722319302">Database</strong>, click <strong id="rds_05_0140__rds_modify_instance_name_b15118152363010">Relational Database Service</strong>. The RDS console is displayed.</span></li><li id="rds_05_0140__li45651852101719"><span>On the <span class="uicontrol" id="rds_05_0140__uicontrol1570716377538"><b>Instances</b></span> page, locate a DB instance using cloud SSD and choose <span class="uicontrol" id="rds_05_0140__uicontrol167071337125311"><b>More</b></span> &gt; <span class="uicontrol" id="rds_05_0140__uicontrol18707143719533"><b>Change Instance Class</b></span> in the <span class="uicontrol" id="rds_05_0140__uicontrol370715377537"><b>Operation</b></span> column.</span><p><p id="rds_05_0140__p615141583510">Alternatively, click the instance name to go to the <strong id="rds_05_0140__b9865183133618">Summary</strong> page. Under <strong id="rds_05_0140__b1190711540534">Instance Class</strong>, click <strong id="rds_05_0140__b1390775445311">Configure</strong>.</p>
</p></li><li id="rds_05_0140__li1968591914482"><span>On the displayed page, select a target Storage Type,<strong id="rds_05_0140__b178989131489"> </strong>for example,<strong id="rds_05_0140__b78984130815"> Extreme SSD</strong> for <strong id="rds_05_0140__b34921427155917">Storage Type</strong> and click <strong id="rds_05_0140__b111301174264">Next</strong>.</span><p><p id="rds_05_0140__p8419646181413">If the target storage type is <strong id="rds_05_0140__b14294555121420">Flexible SSD</strong>, click <strong id="rds_05_0140__b102389011520">Disk QoS</strong> under <strong id="rds_05_0140__b19502578159">Change Type</strong> and enter the IOPS and throughput.</p>
<ul id="rds_05_0140__ul782517243179"><li id="rds_05_0140__li98269244173">IOPS: Flexible SSD decouples capacity from performance and allows for tailored IOPS for your business requirements with fixed capacity.<p id="rds_05_0140__p9406614102618"><a name="rds_05_0140__li98269244173"></a><a name="li98269244173"></a>This parameter is available only for Flexible SSD. The value range is from 3000 to 128000. The IOPS is limited by the disk size and must be no greater than 500 times the disk capacity.</p>
</li><li id="rds_05_0140__li1185650191813">Throughput: Flexible SSD decouples capacity from performance and allows for tailored throughput for your business requirements with fixed capacity.<p id="rds_05_0140__p2407414152616"><a name="rds_05_0140__li1185650191813"></a><a name="li1185650191813"></a>This parameter is available only for Flexible SSD. The value ranges from 125 to 1000 (in MiB/s) and must also be no greater than the IOPS divided by 4.</p>
</p></li><li id="rds_05_0140__li1968591914482"><span>On the <span class="uicontrol" id="rds_05_0140__en-us_topic_0000001992666646_en-us_topic_0000001583350996_en-us_topic_0134328161_uicontrol23521071185824"><b>Change Instance Class</b></span> page, select a new storage type and click <strong id="rds_05_0140__b1421151551216">Next</strong>.</span><p><p id="rds_05_0140__p043320526205">If you select <strong id="rds_05_0140__b155011373712">Flexible SSD</strong>, select <strong id="rds_05_0140__b9550143183710">Instance Specifications</strong> or <strong id="rds_05_0140__b10550937370">Disk QoS</strong> for <strong id="rds_05_0140__b85519318375">Change Type</strong> as needed.</p>
<ul id="rds_05_0140__ul782517243179"><li id="rds_05_0140__li24461295214">To change instance specifications, click <span class="uicontrol" id="rds_05_0140__uicontrol11595121922215"><b>Instance Specifications</b></span> under <span class="uicontrol" id="rds_05_0140__uicontrol632441616229"><b>Change Type</b></span> and select the new specifications.</li><li id="rds_05_0140__li73042250231">To change disk QoS, click <span class="uicontrol" id="rds_05_0140__uicontrol14356164672310"><b>Disk QoS</b></span> under <span class="uicontrol" id="rds_05_0140__uicontrol12218234122313"><b>Change Type</b></span> and enter the new IOPS and throughput.<ul id="rds_05_0140__ul380832012503"><li id="rds_05_0140__li14808182045017"><strong id="rds_05_0140__b1163215371115">IOPS</strong>: The value range is from 3000 to 128000. The IOPS is limited by the disk size and must be no greater than 500 times the disk capacity.</li><li id="rds_05_0140__li5808162085019"><strong id="rds_05_0140__b6443133715111">Throughput</strong>: The value range is from 125 to 1000 (in MiB/s) and must also be no greater than the IOPS divided by 4.</li></ul>
</li></ul>
</p></li><li id="rds_05_0140__li2015111503515"><span>Confirm the configurations and Click <span class="uicontrol" id="rds_05_0140__uicontrol543535718597"><b>Submit</b></span>.</span></li><li id="rds_05_0140__li81651517357"><span>Check the results.</span><p><p id="rds_05_0140__p171661583512">Return to the <strong id="rds_05_0140__b138351935812">Instances</strong> page. A few minutes later, click the instance name and check the new storage type on the displayed <strong id="rds_05_0140__b793116321361">Summary</strong> page.</p>
</p></li></ol>

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<h1 class="topictitle1">Managing Real-Time Sessions</h1>
<div id="body0000002390170405"><div class="section" id="rds_08_0026__en-us_topic_0000001372555901_section4111051174014"><h4 class="sectiontitle">Scenarios</h4><p id="rds_08_0026__en-us_topic_0000001372555901_p58404544406">You can view current session statistics of your instance, identify abnormal sessions, and kill the sessions.</p>
</div>
<div class="section" id="rds_08_0026__en-us_topic_0000001372555901_section17696173774717"><h4 class="sectiontitle">Setting Slow Session Threshold</h4><ol id="rds_08_0026__en-us_topic_0000001372555901_ol105521739133114"><li id="rds_08_0026__li17616348171"><span>Log in to the management console.</span></li><li id="rds_08_0026__li146168481712"><span>Click <span><img id="rds_08_0026__rds_modify_instance_name_en-us_topic_0192953815_image192529212293" src="en-us_image_0000001191211679.png"></span> in the upper left corner and select a region and a project.</span></li><li id="rds_08_0026__li96167481711"><span>Click <strong id="rds_08_0026__rds_modify_instance_name_b171171523153019">Service List</strong>. Under <strong id="rds_08_0026__rds_modify_instance_name_b111722319302">Database</strong>, click <strong id="rds_08_0026__rds_modify_instance_name_b15118152363010">Relational Database Service</strong>. The RDS console is displayed.</span></li><li id="rds_08_0026__en-us_topic_0000001372555901_li1426913204172"><span>On the <strong id="rds_08_0026__b47016134516">Instances</strong> page, click the DB instance name.</span></li><li id="rds_08_0026__en-us_topic_0000001372555901_li499974911328"><span>In the navigation pane, choose <strong id="rds_08_0026__b2382163521911">Sessions</strong> under <strong id="rds_08_0026__b538243519194">DBA Assistant</strong>.</span></li><li id="rds_08_0026__li0538112172519"><span>On the <strong id="rds_08_0026__b551771115910">Sessions</strong> page. You can perform the following operations on this tab page:</span><p><ul id="rds_08_0026__ul109431127194616"><li id="rds_08_0026__li7943827124617">Viewing session statistics<p id="rds_08_0026__p1752161012269"><a name="rds_08_0026__li7943827124617"></a><a name="li7943827124617"></a>In the sessions statistics, you can view statistics on the slow sessions, active sessions, total sessions, long transaction sessions by user, access host, and database.</p>
<div class="section" id="rds_08_0026__en-us_topic_0000001372555901_section17696173774717"><h4 class="sectiontitle">Setting Slow Session Threshold</h4><ol id="rds_08_0026__en-us_topic_0000001372555901_ol105521739133114"><li id="rds_08_0026__li17616348171"><span>Log in to the management console.</span></li><li id="rds_08_0026__li146168481712"><span>Click <span><img id="rds_08_0026__rds_modify_instance_name_en-us_topic_0192953815_image192529212293" src="en-us_image_0000001191211679.png"></span> in the upper left corner and select a region and a project.</span></li><li id="rds_08_0026__li96167481711"><span>Click <strong id="rds_08_0026__rds_modify_instance_name_b171171523153019">Service List</strong>. Under <strong id="rds_08_0026__rds_modify_instance_name_b111722319302">Database</strong>, click <strong id="rds_08_0026__rds_modify_instance_name_b15118152363010">Relational Database Service</strong>. The RDS console is displayed.</span></li><li id="rds_08_0026__en-us_topic_0000001372555901_li1426913204172"><span>On the <strong id="rds_08_0026__b47016134516">Instances</strong> page, click the DB instance name.</span></li><li id="rds_08_0026__en-us_topic_0000001372555901_li499974911328"><span>In the navigation pane, choose <strong id="rds_08_0026__b2382163521911">Sessions</strong> under <strong id="rds_08_0026__b538243519194">DBA Assistant</strong>.</span></li><li id="rds_08_0026__li0538112172519"><span>On the <strong id="rds_08_0026__b551771115910">Sessions</strong> page, you can perform the following operations on this tab page:</span><p><ul id="rds_08_0026__ul109431127194616"><li id="rds_08_0026__li7943827124617">Viewing session statistics<p id="rds_08_0026__p1752161012269"><a name="rds_08_0026__li7943827124617"></a><a name="li7943827124617"></a>In the sessions statistics, you can view statistics on the slow sessions, active sessions, total sessions, long transaction sessions by user, access host, and database.</p>
</li><li id="rds_08_0026__li155411536134616">Setting a slow session threshold<p id="rds_08_0026__p1674112622917"><a name="rds_08_0026__li155411536134616"></a><a name="li155411536134616"></a>Click <span><img id="rds_08_0026__image5442125210718" src="en-us_image_0000002422550952.png"></span> next to the <strong id="rds_08_0026__b11242114811337">Slow Session Threshold</strong> field. In the displayed dialog box, set a slow session threshold and click <strong id="rds_08_0026__b152422487335">OK</strong>. Sessions whose execution durations are greater than this threshold are automatically displayed.</p>
</li><li id="rds_08_0026__li179681342154612">Killing abnormal sessions<p id="rds_08_0026__p119643818304"><a name="rds_08_0026__li179681342154612"></a><a name="li179681342154612"></a>In the session list, you can view session details. You can also select the abnormal session you want to end and click <strong id="rds_08_0026__b18631649163612">Kill Session</strong> to recover the database.</p>
<p id="rds_08_0026__p83912351172">A maximum of 100 sessions can be killed at a time.</p>

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</tr>
<tr id="rds_08_0033__row13604341162519"><td class="cellrowborder" valign="top" width="20%" headers="mcps1.3.4.2.8.2.1.2.3.1.1 "><p id="rds_08_0033__p166044417257">Max. Concurrent Requests</p>
</td>
<td class="cellrowborder" valign="top" width="80%" headers="mcps1.3.4.2.8.2.1.2.3.1.2 "><p id="rds_08_0033__p160434112520">If the number of concurrent SQL statements matching the keyword exceeds this limit, the SQL statements will not be executed. The value ranges from 0ms to 1,000,000,000ms.</p>
<td class="cellrowborder" valign="top" width="80%" headers="mcps1.3.4.2.8.2.1.2.3.1.2 "><p id="rds_08_0033__p160434112520">If the number of concurrent SQL statements matching the keyword exceeds this limit, the SQL statements will not be executed. The value ranges from 0 to 1,000,000,000.</p>
<p id="rds_08_0033__p195811435102720">The value 0 indicates that SQL statements matching the keywords cannot be executed.</p>
</td>
</tr>
<tr id="rds_08_0033__row7128125551416"><td class="cellrowborder" valign="top" width="20%" headers="mcps1.3.4.2.8.2.1.2.3.1.1 "><p id="rds_08_0033__p686114418521">Kill existing sessions that match this rule</p>

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@ -88,7 +88,7 @@ ResultSet resultSet = preparedStatement.executeQuery();</pre>
</td>
<td class="cellrowborder" valign="top" width="12.64747050589882%" headers="mcps1.3.8.2.2.7.1.5 "><p id="rds_09_0065__en-us_topic_0000001908132694_p183141471654">-1</p>
</td>
<td class="cellrowborder" valign="top" width="24.79504099180164%" headers="mcps1.3.8.2.2.7.1.6 "><p id="rds_09_0065__en-us_topic_0000001908132694_p1231413475510">The number of SQL statements that can be concurrently executed (its priority is higher than that of concurrency control rules). If the value is less than or equal to 0, the number of SQL statements is not limited.</p>
<td class="cellrowborder" valign="top" width="24.79504099180164%" headers="mcps1.3.8.2.2.7.1.6 "><p id="rds_09_0065__en-us_topic_0000001908132694_p1231413475510">The number of SQL statements that can be concurrently executed (its priority is higher than that of SQL throttling rules). If the value is less than or equal to 0, the number of SQL statements is not limited.</p>
</td>
</tr>
</tbody>

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<h1 class="topictitle1">What Is the Maximum Number of Connections to an RDS DB Instance?</h1>
<div id="body8662426"><p id="rds_faq_0055__en-us_topic_0086557106_p8060118">RDS does not have constraints on the number of connections. This number is determined by the default value and value range of the DB engine. For example, you can set <strong id="rds_faq_0055__b726543865011">max_connections</strong> and <strong id="rds_faq_0055__b192489437502">max_user_connections</strong> in a parameter template to configure the maximum number of connections for an RDS for MySQL DB instance.</p>
<div class="section" id="rds_faq_0055__section394611138110"><h4 class="sectiontitle">Changing the Maximum Number of Connections</h4><p id="rds_faq_0055__p14965182520284">.</p>
<p id="rds_faq_0055__p1382955115120">You can change the maximum number of connections using commands.</p>
<div class="section" id="rds_faq_0055__section394611138110"><h4 class="sectiontitle">Changing the Maximum Number of Connections</h4><p id="rds_faq_0055__p1382955115120">You can change the maximum number of connections using commands.</p>
<ol id="rds_faq_0055__ol787713341185"><li id="rds_faq_0055__li15877123414182">Query the maximum number of connections.<p id="rds_faq_0055__p569163718181"><a name="rds_faq_0055__li15877123414182"></a><a name="li15877123414182"></a><strong id="rds_faq_0055__b43271223121810">show global variables like 'max_connections';</strong></p>
</li><li id="rds_faq_0055__li587718345181">Change the value of <strong id="rds_faq_0055__b1372815613136">max_connections</strong> under <strong id="rds_faq_0055__b4886759121316">mysqld</strong> in the <strong id="rds_faq_0055__b426542511415">my.cnf</strong> file.<p id="rds_faq_0055__p1319174141816"><strong id="rds_faq_0055__b74301527141812">[mysqld]</strong></p>
<p id="rds_faq_0055__p136029426184"><strong id="rds_faq_0055__b10455162713185">max_connections = 1000</strong></p>

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@ -1,7 +1,7 @@
<a name="rds_glossary_0001"></a><a name="rds_glossary_0001"></a>
<h1 class="topictitle1"><strong id="b842352706181747">Glossary</strong></h1>
<div id="body1540453853895"><p id="rds_glossary_0001__en-us_topic_0086557023_p8060118">For details about the glossaries in this document, see <a href="https://docs.otc.t-systems.com/en-us/glossary/index.html" target="_blank" rel="noopener noreferrer">Glossary</a>.</p>
<div id="body0000002567184291"><p id="rds_glossary_0001__en-us_topic_0086557023_p8060118">For details about the glossaries in this document, see <a href="https://docs.otc.t-systems.com/en-us/glossary/index.html" target="_blank" rel="noopener noreferrer">Glossary</a>.</p>
</div>
<div></div>

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@ -66,9 +66,8 @@
</li></ul>
</div>
<div class="section" id="rds_pg_05_0084__en-us_topic_0171122523_section3535102285710"><h4 class="sectiontitle">Procedure</h4><ol id="rds_pg_05_0084__en-us_topic_0171122523_ol4816555385651"><li id="rds_pg_05_0084__li17616348171"><span>Log in to the management console.</span></li><li id="rds_pg_05_0084__li146168481712"><span>Click <span><img id="rds_pg_05_0084__rds_modify_instance_name_en-us_topic_0192953815_image192529212293" src="en-us_image_0000001191211679.png"></span> in the upper left corner and select a region and a project.</span></li><li id="rds_pg_05_0084__li96167481711"><span>Click <strong id="rds_pg_05_0084__rds_modify_instance_name_b171171523153019">Service List</strong>. Under <strong id="rds_pg_05_0084__rds_modify_instance_name_b111722319302">Database</strong>, click <strong id="rds_pg_05_0084__rds_modify_instance_name_b15118152363010">Relational Database Service</strong>. The RDS console is displayed.</span></li><li id="rds_pg_05_0084__li45651852101719"><span>On the <span class="uicontrol" id="rds_pg_05_0084__en-us_topic_scale_rds_uicontrol1223145619914"><b>Instances</b></span> page, locate the target DB instance and choose <span class="uicontrol" id="rds_pg_05_0084__en-us_topic_scale_rds_uicontrol42324561915"><b>More</b></span> &gt; <span class="uicontrol" id="rds_pg_05_0084__en-us_topic_scale_rds_uicontrol9233155612917"><b>Change Instance Class</b></span> in the <span class="uicontrol" id="rds_pg_05_0084__en-us_topic_scale_rds_uicontrol192351956397"><b>Operation</b></span> column.</span><p><p id="rds_pg_05_0084__en-us_topic_scale_rds_p38931353201717">Alternatively, click the target DB instance to go to the <span class="uicontrol" id="rds_pg_05_0084__en-us_topic_scale_rds_uicontrol1632952433619"><b>Summary</b></span> page. Under <span class="uicontrol" id="rds_pg_05_0084__en-us_topic_scale_rds_uicontrol1355913137453"><b>Instance Class</b></span>, click <strong id="rds_pg_05_0084__en-us_topic_scale_rds_b227433244111">Configure</strong>.</p>
</p></li><li id="rds_pg_05_0084__li723820510105"><span>On the displayed page, select a target Storage Type,<strong id="rds_pg_05_0084__rds_05_0140_b178989131489"> </strong>for example,<strong id="rds_pg_05_0084__rds_05_0140_b78984130815"> Extreme SSD</strong> for <strong id="rds_pg_05_0084__rds_05_0140_b34921427155917">Storage Type</strong> and click <strong id="rds_pg_05_0084__rds_05_0140_b111301174264">Next</strong>.</span><p><p id="rds_pg_05_0084__rds_05_0140_p8419646181413">If the target storage type is <strong id="rds_pg_05_0084__rds_05_0140_b14294555121420">Flexible SSD</strong>, click <strong id="rds_pg_05_0084__rds_05_0140_b102389011520">Disk QoS</strong> under <strong id="rds_pg_05_0084__rds_05_0140_b19502578159">Change Type</strong> and enter the IOPS and throughput.</p>
<ul id="rds_pg_05_0084__rds_05_0140_ul782517243179"><li id="rds_pg_05_0084__rds_05_0140_li98269244173">IOPS: Flexible SSD decouples capacity from performance and allows for tailored IOPS for your business requirements with fixed capacity.<p id="rds_pg_05_0084__rds_05_0140_p9406614102618"><a name="rds_pg_05_0084__rds_05_0140_li98269244173"></a><a name="rds_05_0140_li98269244173"></a>This parameter is available only for Flexible SSD. The value range is from 3000 to 128000. The IOPS is limited by the disk size and must be no greater than 500 times the disk capacity.</p>
</li><li id="rds_pg_05_0084__rds_05_0140_li1185650191813">Throughput: Flexible SSD decouples capacity from performance and allows for tailored throughput for your business requirements with fixed capacity.<p id="rds_pg_05_0084__rds_05_0140_p2407414152616"><a name="rds_pg_05_0084__rds_05_0140_li1185650191813"></a><a name="rds_05_0140_li1185650191813"></a>This parameter is available only for Flexible SSD. The value ranges from 125 to 1000 (in MiB/s) and must also be no greater than the IOPS divided by 4.</p>
</p></li><li id="rds_pg_05_0084__li723820510105"><span>On the <span class="uicontrol" id="rds_pg_05_0084__rds_05_0140_en-us_topic_0000001992666646_en-us_topic_0000001583350996_en-us_topic_0134328161_uicontrol23521071185824"><b>Change Instance Class</b></span> page, select a new storage type and click <strong id="rds_pg_05_0084__rds_05_0140_b1421151551216">Next</strong>.</span><p><p id="rds_pg_05_0084__rds_05_0140_p043320526205">If you select <strong id="rds_pg_05_0084__rds_05_0140_b155011373712">Flexible SSD</strong>, select <strong id="rds_pg_05_0084__rds_05_0140_b9550143183710">Instance Specifications</strong> or <strong id="rds_pg_05_0084__rds_05_0140_b10550937370">Disk QoS</strong> for <strong id="rds_pg_05_0084__rds_05_0140_b85519318375">Change Type</strong> as needed.</p>
<ul id="rds_pg_05_0084__rds_05_0140_ul782517243179"><li id="rds_pg_05_0084__rds_05_0140_li24461295214">To change instance specifications, click <span class="uicontrol" id="rds_pg_05_0084__rds_05_0140_uicontrol11595121922215"><b>Instance Specifications</b></span> under <span class="uicontrol" id="rds_pg_05_0084__rds_05_0140_uicontrol632441616229"><b>Change Type</b></span> and select the new specifications.</li><li id="rds_pg_05_0084__rds_05_0140_li73042250231">To change disk QoS, click <span class="uicontrol" id="rds_pg_05_0084__rds_05_0140_uicontrol14356164672310"><b>Disk QoS</b></span> under <span class="uicontrol" id="rds_pg_05_0084__rds_05_0140_uicontrol12218234122313"><b>Change Type</b></span> and enter the new IOPS and throughput.<ul id="rds_pg_05_0084__rds_05_0140_ul380832012503"><li id="rds_pg_05_0084__rds_05_0140_li14808182045017"><strong id="rds_pg_05_0084__rds_05_0140_b1163215371115">IOPS</strong>: The value range is from 3000 to 128000. The IOPS is limited by the disk size and must be no greater than 500 times the disk capacity.</li><li id="rds_pg_05_0084__rds_05_0140_li5808162085019"><strong id="rds_pg_05_0084__rds_05_0140_b6443133715111">Throughput</strong>: The value range is from 125 to 1000 (in MiB/s) and must also be no greater than the IOPS divided by 4.</li></ul>
</li></ul>
</p></li><li id="rds_pg_05_0084__en-us_topic_0171122523_lfe57f85e1f914c18a27135b833fe5532"><span>Confirm the configurations and Click <span class="uicontrol" id="rds_pg_05_0084__rds_05_0140_uicontrol543535718597"><b>Submit</b></span>.</span></li><li id="rds_pg_05_0084__li813421164911"><span>Check the results.</span><p><p id="rds_pg_05_0084__rds_05_0140_p171661583512">Return to the <strong id="rds_pg_05_0084__rds_05_0140_b138351935812">Instances</strong> page. A few minutes later, click the instance name and check the new storage type on the displayed <strong id="rds_pg_05_0084__rds_05_0140_b793116321361">Summary</strong> page.</p>
</p></li></ol>

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@ -34,10 +34,10 @@
</div>
</div>
<div class="section" id="rds_sqlserver_05_0050__section1178211784615"><h4 class="sectiontitle">Procedure</h4><ol id="rds_sqlserver_05_0050__en-us_topic_0134328161_ol5947368818435"><li id="rds_sqlserver_05_0050__li17616348171"><span>Log in to the management console.</span></li><li id="rds_sqlserver_05_0050__li146168481712"><span>Click <span><img id="rds_sqlserver_05_0050__rds_modify_instance_name_en-us_topic_0192953815_image192529212293" src="en-us_image_0000001191211679.png"></span> in the upper left corner and select a region and a project.</span></li><li id="rds_sqlserver_05_0050__li96167481711"><span>Click <strong id="rds_sqlserver_05_0050__rds_modify_instance_name_b171171523153019">Service List</strong>. Under <strong id="rds_sqlserver_05_0050__rds_modify_instance_name_b111722319302">Database</strong>, click <strong id="rds_sqlserver_05_0050__rds_modify_instance_name_b15118152363010">Relational Database Service</strong>. The RDS console is displayed.</span></li><li id="rds_sqlserver_05_0050__en-us_topic_0134328161_li45651852101719"><span>On the <span class="uicontrol" id="rds_sqlserver_05_0050__en-us_topic_scale_rds_uicontrol1223145619914"><b>Instances</b></span> page, locate the target DB instance and choose <span class="uicontrol" id="rds_sqlserver_05_0050__en-us_topic_scale_rds_uicontrol42324561915"><b>More</b></span> &gt; <span class="uicontrol" id="rds_sqlserver_05_0050__en-us_topic_scale_rds_uicontrol9233155612917"><b>Change Instance Class</b></span> in the <span class="uicontrol" id="rds_sqlserver_05_0050__en-us_topic_scale_rds_uicontrol192351956397"><b>Operation</b></span> column.</span><p><p id="rds_sqlserver_05_0050__en-us_topic_scale_rds_p38931353201717">Alternatively, click the target DB instance to go to the <span class="uicontrol" id="rds_sqlserver_05_0050__en-us_topic_scale_rds_uicontrol1632952433619"><b>Summary</b></span> page. Under <span class="uicontrol" id="rds_sqlserver_05_0050__en-us_topic_scale_rds_uicontrol1355913137453"><b>Instance Class</b></span>, click <strong id="rds_sqlserver_05_0050__en-us_topic_scale_rds_b227433244111">Configure</strong>.</p>
</p></li><li id="rds_sqlserver_05_0050__li723820510105"><span>On the displayed page, select a target Storage Type,<strong id="rds_sqlserver_05_0050__rds_05_0140_b178989131489"> </strong>for example,<strong id="rds_sqlserver_05_0050__rds_05_0140_b78984130815"> Extreme SSD</strong> for <strong id="rds_sqlserver_05_0050__rds_05_0140_b34921427155917">Storage Type</strong> and click <strong id="rds_sqlserver_05_0050__rds_05_0140_b111301174264">Next</strong>.</span><p><p id="rds_sqlserver_05_0050__rds_05_0140_p8419646181413">If the target storage type is <strong id="rds_sqlserver_05_0050__rds_05_0140_b14294555121420">Flexible SSD</strong>, click <strong id="rds_sqlserver_05_0050__rds_05_0140_b102389011520">Disk QoS</strong> under <strong id="rds_sqlserver_05_0050__rds_05_0140_b19502578159">Change Type</strong> and enter the IOPS and throughput.</p>
<ul id="rds_sqlserver_05_0050__rds_05_0140_ul782517243179"><li id="rds_sqlserver_05_0050__rds_05_0140_li98269244173">IOPS: Flexible SSD decouples capacity from performance and allows for tailored IOPS for your business requirements with fixed capacity.<p id="rds_sqlserver_05_0050__rds_05_0140_p9406614102618"><a name="rds_sqlserver_05_0050__rds_05_0140_li98269244173"></a><a name="rds_05_0140_li98269244173"></a>This parameter is available only for Flexible SSD. The value range is from 3000 to 128000. The IOPS is limited by the disk size and must be no greater than 500 times the disk capacity.</p>
</li><li id="rds_sqlserver_05_0050__rds_05_0140_li1185650191813">Throughput: Flexible SSD decouples capacity from performance and allows for tailored throughput for your business requirements with fixed capacity.<p id="rds_sqlserver_05_0050__rds_05_0140_p2407414152616"><a name="rds_sqlserver_05_0050__rds_05_0140_li1185650191813"></a><a name="rds_05_0140_li1185650191813"></a>This parameter is available only for Flexible SSD. The value ranges from 125 to 1000 (in MiB/s) and must also be no greater than the IOPS divided by 4.</p>
</p></li><li id="rds_sqlserver_05_0050__li723820510105"><span>On the <span class="uicontrol" id="rds_sqlserver_05_0050__rds_05_0140_en-us_topic_0000001992666646_en-us_topic_0000001583350996_en-us_topic_0134328161_uicontrol23521071185824"><b>Change Instance Class</b></span> page, select a new storage type.</span><p><p id="rds_sqlserver_05_0050__rds_05_0140_p043320526205">If you select <strong id="rds_sqlserver_05_0050__rds_05_0140_b155011373712">Flexible SSD</strong>, select <strong id="rds_sqlserver_05_0050__rds_05_0140_b9550143183710">Instance Specifications</strong> or <strong id="rds_sqlserver_05_0050__rds_05_0140_b10550937370">Disk QoS</strong> for <strong id="rds_sqlserver_05_0050__rds_05_0140_b85519318375">Change Type</strong> as needed.</p>
<ul id="rds_sqlserver_05_0050__rds_05_0140_ul782517243179"><li id="rds_sqlserver_05_0050__rds_05_0140_li24461295214">To change instance specifications, click <span class="uicontrol" id="rds_sqlserver_05_0050__rds_05_0140_uicontrol11595121922215"><b>Instance Specifications</b></span> under <span class="uicontrol" id="rds_sqlserver_05_0050__rds_05_0140_uicontrol632441616229"><b>Change Type</b></span> and select the new specifications.</li><li id="rds_sqlserver_05_0050__rds_05_0140_li73042250231">To change disk QoS, click <span class="uicontrol" id="rds_sqlserver_05_0050__rds_05_0140_uicontrol14356164672310"><b>Disk QoS</b></span> under <span class="uicontrol" id="rds_sqlserver_05_0050__rds_05_0140_uicontrol12218234122313"><b>Change Type</b></span> and enter the new IOPS and throughput.<ul id="rds_sqlserver_05_0050__rds_05_0140_ul380832012503"><li id="rds_sqlserver_05_0050__rds_05_0140_li14808182045017"><strong id="rds_sqlserver_05_0050__rds_05_0140_b1163215371115">IOPS</strong>: The value range is from 3000 to 128000. The IOPS is limited by the disk size and must be no greater than 500 times the disk capacity.</li><li id="rds_sqlserver_05_0050__rds_05_0140_li5808162085019"><strong id="rds_sqlserver_05_0050__rds_05_0140_b6443133715111">Throughput</strong>: The value range is from 125 to 1000 (in MiB/s) and must also be no greater than the IOPS divided by 4.</li></ul>
</li></ul>
</p></li><li id="rds_sqlserver_05_0050__li424822515515"><span>Specify <strong id="rds_sqlserver_05_0050__b1359285141318">Scheduled Time</strong> and click <strong id="rds_sqlserver_05_0050__b1421151551216">Next</strong>.</span><p><ul id="rds_sqlserver_05_0050__ul2191105713551"><li id="rds_sqlserver_05_0050__li3616173143510"><strong id="rds_sqlserver_05_0050__b16272132148">Immediate</strong>: The change is applied immediately after the request is submitted.</li><li id="rds_sqlserver_05_0050__li46162310354"><strong id="rds_sqlserver_05_0050__b19956132113148">During maintenance window</strong>: If you select this option, set the maintenance window to off-peak hours.</li></ul>
</p></li><li id="rds_sqlserver_05_0050__en-us_topic_0171122523_lfe57f85e1f914c18a27135b833fe5532"><span>Confirm the configurations and Click <span class="uicontrol" id="rds_sqlserver_05_0050__rds_05_0140_uicontrol543535718597"><b>Submit</b></span>.</span></li><li id="rds_sqlserver_05_0050__li813421164911"><span>Check the results.</span><p><p id="rds_sqlserver_05_0050__rds_05_0140_p171661583512">Return to the <strong id="rds_sqlserver_05_0050__rds_05_0140_b138351935812">Instances</strong> page. A few minutes later, click the instance name and check the new storage type on the displayed <strong id="rds_sqlserver_05_0050__rds_05_0140_b793116321361">Summary</strong> page.</p>
</p></li></ol>
</div>