forked from docs/doc-exports
Dong, Qiu Jian
86fb05065f
Reviewed-by: Eotvos, Oliver <oliver.eotvos@t-systems.com> Co-authored-by: Dong, Qiu Jian <qiujiandong1@huawei.com> Co-committed-by: Dong, Qiu Jian <qiujiandong1@huawei.com>
25 lines
2.4 KiB
HTML
25 lines
2.4 KiB
HTML
<a name="cce_faq_00107"></a><a name="cce_faq_00107"></a>
|
|
|
|
<h1 class="topictitle1">Why Does a Container in a CCE Cluster Fail to Perform DNS Resolution?</h1>
|
|
<div id="body1518315573554"><div class="section" id="cce_faq_00107__section19583949181011"><h4 class="sectiontitle">Symptom</h4><p id="cce_faq_00107__p12604203123">A customer bound its domain name to the private domain names in the DNS service and also to a specific VPC. It is found that the ECSs in the VPC can properly resolve the private domain name but the containers in the VPC cannot.</p>
|
|
</div>
|
|
<div class="section" id="cce_faq_00107__section12330105751313"><h4 class="sectiontitle">Application Scenario</h4><p id="cce_faq_00107__p37581901410">Containers in a VPC cannot resolve domain names.</p>
|
|
</div>
|
|
<div class="section" id="cce_faq_00107__section10308131191417"><h4 class="sectiontitle">Solution</h4><p id="cce_faq_00107__p16555438121410">According to the resolution rules of private domain names, the subnet DNS in the VPC must be set to the cloud DNS. You can find the details of the private network DNS service on its console.</p>
|
|
<p id="cce_faq_00107__p1617354001516"></p>
|
|
<p id="cce_faq_00107__p779344821512">The customer can perform domain name resolution on the ECSs in the VPC subnet, which indicates that the preceding configuration has been completed in the subnet.</p>
|
|
<p id="cce_faq_00107__p104743151166"><span><img id="cce_faq_00107__image547491520169" src="en-us_image_0000001851585004.jpg"></span></p>
|
|
<p id="cce_faq_00107__p353362613168">However, when the domain name resolution is performed in a container, the message "bad address" is displayed, indicating that the domain name cannot be resolved.</p>
|
|
<p id="cce_faq_00107__p2036043621617"><span><img id="cce_faq_00107__image63601136151612" src="en-us_image_0000001851743732.jpg"></span></p>
|
|
<p id="cce_faq_00107__p981854583116">Log in to the CCE console and check the add-ons installed in the cluster.</p>
|
|
<p id="cce_faq_00107__p127245111197">If you find that the coredns add-on does not exist in <strong id="cce_faq_00107__b135885406911">Add-ons Installed</strong>, the coredns add-on may have been incorrectly uninstalled.</p>
|
|
<p id="cce_faq_00107__p1574171732019">Install it and add the corresponding domain name and DNS service address to resolve the domain name.</p>
|
|
</div>
|
|
</div>
|
|
<div>
|
|
<div class="familylinks">
|
|
<div class="parentlink"><strong>Parent topic:</strong> <a href="cce_faq_00001.html">DNS FAQs</a></div>
|
|
</div>
|
|
</div>
|
|
|