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Wang , Deng Ke
519944c837
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>
17 lines
2.5 KiB
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17 lines
2.5 KiB
HTML
<a name="dds_faq_0013"></a><a name="dds_faq_0013"></a>
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<h1 class="topictitle1">What Should I Do If the ECS Cannot Connect to a DDS DB Instance?</h1>
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<div id="body1482404620316"><p id="dds_faq_0013__ab4a41042dd4c46f1b5d79d94d416d9d3">Perform the following steps to identify the problem: The following uses the cluster instance as an example.</p>
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<ol id="dds_faq_0013__ol24699561103624"><li id="dds_faq_0013__li58384376103624"><span>Check whether the ECS and DDS DB instance are located in the same VPC.</span><p><ul id="dds_faq_0013__ul66139476103624"><li id="dds_faq_0013__li58811851103624">If they are in the same VPC, go to <a href="#dds_faq_0013__li10923237103639">2</a>.</li><li id="dds_faq_0013__li59544613103624">If they are in different VPCs, create an ECS in the VPC where the DDS DB instance is located.</li></ul>
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</p></li><li id="dds_faq_0013__li10923237103639"><a name="dds_faq_0013__li10923237103639"></a><a name="li10923237103639"></a><span>Check whether a security group has been added to the ECS.</span><p><ul id="dds_faq_0013__ul3790537110375"><li id="dds_faq_0013__li2138325592714">If yes, check whether its configuration rules are suitable. For details, see the security group description in section <a href="dds_02_0005.html">Setting a Security Group</a>. Then, go to <a href="#dds_faq_0013__li2748172710406">3</a>.</li><li id="dds_faq_0013__li5043620910375">If no security group has been added, go to the VPC console from the ECS details page and click <strong id="dds_faq_0013__b61525571038">Security Groups</strong> to add a security group.</li></ul>
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</p></li><li id="dds_faq_0013__li2748172710406"><a name="dds_faq_0013__li2748172710406"></a><a name="li2748172710406"></a><span>On the ECS, check whether the DDS DB instance address port can be connected.</span><p><pre class="screen" id="dds_faq_0013__screen8209318103624"><strong id="dds_faq_0013__b22470970103624">telnet</strong> <<em id="dds_faq_0013__i912146103624">DB instance address</em>> {8635}</pre>
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<ul id="dds_faq_0013__ul11903995103624"><li id="dds_faq_0013__li79199592810">If the port can be connected, the network is normal. Check the database account and password. For details, see section <a href="en-us_topic_0044018334.html">Connecting to a DB Instance Through a Client</a>.</li><li id="dds_faq_0013__li60974989103624">If the port cannot be connected, contact post-sales technical support for troubleshooting.</li></ul>
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</p></li></ol>
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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="dds_faq_0104.html">Connection and Access FAQs</a></div>
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</div>
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</div>
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