forked from docs/doc-exports
Wang , Deng Ke
04da47cae2
Reviewed-by: Hasko, Vladimir <vladimir.hasko@t-systems.com> Co-authored-by: Wang , Deng Ke <wangdengke2@huawei.com> Co-committed-by: Wang , Deng Ke <wangdengke2@huawei.com>
54 lines
5.4 KiB
HTML
54 lines
5.4 KiB
HTML
<a name="opengauss_01_0013"></a><a name="opengauss_01_0013"></a>
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<h1 class="topictitle1">Constraints</h1>
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<div id="body8662426"><p id="opengauss_01_0013__aff3f248cbae345fcae0c2be31b7cab84">To ensure the stability and security of GaussDB(openGauss), certain constraints are put in place for access or permission control. <a href="#opengauss_01_0013__t94dbd204cbaf49088da63b6600993a64">Table 1</a> describes such constraints.</p>
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<div class="tablenoborder"><a name="opengauss_01_0013__t94dbd204cbaf49088da63b6600993a64"></a><a name="t94dbd204cbaf49088da63b6600993a64"></a><table cellpadding="4" cellspacing="0" summary="" id="opengauss_01_0013__t94dbd204cbaf49088da63b6600993a64" frame="border" border="1" rules="all"><caption><b>Table 1 </b>Function constraints</caption><thead align="left"><tr id="opengauss_01_0013__r2a85f2d76a6a42adb97a1ba14b885618"><th align="left" class="cellrowborder" valign="top" width="28.999999999999996%" id="mcps1.3.2.2.3.1.1"><p id="opengauss_01_0013__aee4d8380a08948f090b2bb51d1d4acae"><strong id="opengauss_01_0013__b1762064114332">Function Item</strong></p>
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</th>
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<th align="left" class="cellrowborder" valign="top" width="71%" id="mcps1.3.2.2.3.1.2"><p id="opengauss_01_0013__a3deb95029b684e619b734eb13de00a92"><strong id="opengauss_01_0013__b145741445338">Constraints</strong></p>
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</th>
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</tr>
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</thead>
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<tbody><tr id="opengauss_01_0013__rc7e10ae0ab8f40bd8326659c9144bf06"><td class="cellrowborder" valign="top" width="28.999999999999996%" headers="mcps1.3.2.2.3.1.1 "><p id="opengauss_01_0013__a400a1e09b5b64ecc90546c95a1e8cc33">Database access</p>
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</td>
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<td class="cellrowborder" valign="top" width="71%" headers="mcps1.3.2.2.3.1.2 ">
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<ul id="opengauss_01_0013__en-us_topic_0204818629_ul34363141508"><li id="opengauss_01_0013__l0a3bf59fd3144964b64fc39f36745da2">Security group rules must be added to allow the ECSs to access <span id="opengauss_01_0013__text1735714717444">GaussDB(openGauss)</span> DB instances.<p id="opengauss_01_0013__a4319121c606d4b5db7cc01ac3c398baa">By default, a <span id="opengauss_01_0013__text385651771118">GaussDB(openGauss)</span> DB instance cannot be accessed by an ECS in a different security group. To allow it, you must add an inbound rule to the <span id="opengauss_01_0013__text19980737124416">GaussDB(openGauss)</span> security group.</p>
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</li><li id="opengauss_01_0013__en-us_topic_0204818629_li90329704">The default port is <strong id="opengauss_01_0013__b54881181952">8000</strong>. You can change it only when creating a DB instance.</li></ul>
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</td>
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</tr>
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<tr id="opengauss_01_0013__r1b13e552e5394b6ebb63a3861ba7adb5"><td class="cellrowborder" valign="top" width="28.999999999999996%" headers="mcps1.3.2.2.3.1.1 "><p id="opengauss_01_0013__a03dcb95f55154fbbacea2835b5c08203">Deployment</p>
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</td>
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<td class="cellrowborder" valign="top" width="71%" headers="mcps1.3.2.2.3.1.2 "><p id="opengauss_01_0013__a5d2ce7f1839545328d20c74df37070e0">ECSs in which <span id="opengauss_01_0013__text94133013175">GaussDB(openGauss)</span> DB instances are deployed are not directly visible to users. You can access <span id="opengauss_01_0013__text108681738171712">GaussDB(openGauss)</span> DB instances only through an IP address and a port number.</p>
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</td>
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</tr>
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<tr id="opengauss_01_0013__r12839dc93a59424699545655c787ca20"><td class="cellrowborder" valign="top" width="28.999999999999996%" headers="mcps1.3.2.2.3.1.1 "><p id="opengauss_01_0013__a278a06fa0981499abb72776d9f7440df">Database root permissions</p>
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<td class="cellrowborder" valign="top" width="71%" headers="mcps1.3.2.2.3.1.2 "><p id="opengauss_01_0013__acafb792dd0a04f449499efcaa158cb09">Only the <strong id="opengauss_01_0013__afdfb730eee224508b5921b6e29539bb8">root</strong> permissions are available on the instance creation page.</p>
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</td>
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</tr>
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<tr id="opengauss_01_0013__r71d03a97e01e41ca9d8fbdc59ab66398"><td class="cellrowborder" valign="top" width="28.999999999999996%" headers="mcps1.3.2.2.3.1.1 "><p id="opengauss_01_0013__a3b1c73710b5c411c9d2ab99fd5d00138">Database parameter modification</p>
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<td class="cellrowborder" valign="top" width="71%" headers="mcps1.3.2.2.3.1.2 "><p id="opengauss_01_0013__abbe5b7a0320e408d8d9b5cc659c9871e">Some parameters can be modified on the console.</p>
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</td>
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</tr>
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<tr id="opengauss_01_0013__r7b6213c74a9047fa9d12adce7a76aac4"><td class="cellrowborder" valign="top" width="28.999999999999996%" headers="mcps1.3.2.2.3.1.1 "><p id="opengauss_01_0013__aaf0bbfc0b8064911a6cc4d0837088229">DB instance reboot</p>
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<td class="cellrowborder" valign="top" width="71%" headers="mcps1.3.2.2.3.1.2 "><p id="opengauss_01_0013__a0c84bcba03544360b69840d84fa6caf3"><span id="opengauss_01_0013__text171861633194317">GaussDB(openGauss)</span> DB instances cannot be rebooted through commands. They must be rebooted on the management console.</p>
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</td>
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</tr>
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<tr id="opengauss_01_0013__rd6c17e923d3e4e52b32fd04458c10d93"><td class="cellrowborder" valign="top" width="28.999999999999996%" headers="mcps1.3.2.2.3.1.1 "><p id="opengauss_01_0013__a6a5f037975c9461285dd1e20ea82c099">Backup files</p>
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</td>
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<td class="cellrowborder" valign="top" width="71%" headers="mcps1.3.2.2.3.1.2 "><p id="opengauss_01_0013__a7397eef952a642e28a643b97a32d198c"><span id="opengauss_01_0013__text1699212434315">GaussDB(openGauss)</span> backup files are stored in OBS buckets and are not visible to users.</p>
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</td>
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</tr>
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</tbody>
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</table>
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</div>
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</div>
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<div>
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<div class="familylinks">
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<div class="parentlink"><strong>Parent topic:</strong> <a href="opengauss_01_0001.html">Introduction</a></div>
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</div>
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</div>
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