关于linux【repomd.xml】中报错问题

报错问题：
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**Curl error (6): Couldn't resolve host name for http://repo.openeuler.org/openEuler-22.03-LTS/OS/x86_64/repodata/repomd.xml [Could not resolve host: repo.openeuler.org]
Error: Failed to download metadata for repo 'OS': Cannot download repomd.xml: Cannot download repodata/repomd.xml: All mirrors were tried**

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原因：
在resolv.conf解析文件中我的里面只有一个12.0.0.1导致下载失败

解决方法：
进入**/etc文件找到resolv.conf** 加入nameserver 114.114.114.114