解决yum 命令出现 Couldn’t resolve host错误,腾讯云使用第三方源的问题

安装svn的时候,发现报错说一个地址无法访问。

# yum list | grep subversion
http://opensource.wandisco.com/centos/7/svn-1.8/RPMS/x86_64/repodata/repomd.xml: [Errno 14] curl#6 - "Couldn't resolve host 'opensource.wandisco.com'"  
正在尝试其它镜像。  
 
 
 One of the configured repositories failed (Wandisco SVN Repo),  
 and yum doesn't have enough cached data to continue. At this point the only  
 safe thing yum can do is fail. There are a few ways to work "fix" this:  
 
     1. Contact the upstream for the repository and get them to fix the problem.  
 
     2. Reconfigure the baseurl/etc. for the repository, to point to a working  
        upstream. This is most often useful if you are using a newer  
        distribution release than is supported by the repository (and the  
        packages for the previous distribution release still work).  
 
     3. Disable the repository, so yum won't use it by default. Yum will then  
        just ignore the repository until you permanently enable it again or use  
        --enablerepo for temporary usage:  
 
            yum-config-manager --disable WandiscoSVN  
 
     4. Configure the failing repository to be skipped, if it is unavailable.  
        Note that yum will try to contact the repo. when it runs most commands,  
        so will have to try and fail each time (and thus. yum will be be much  
        slower). If it is a very temporary problem though, this is often a nice  
        compromise:  
 
            yum-config-manager --save --setopt=WandiscoSVN.skip_if_unavailable=true  
 
failure: repodata/repomd.xml from WandiscoSVN: [Errno 256] No more mirrors to try.  
http://opensource.wandisco.com/centos/7/svn-1.8/RPMS/x86_64/repodata/repomd.xml: [Errno 14] curl#6 - "Couldn't resolve host 'opensource.wandisco.com'"

在域名服务器配置中,添加一个8.8.8.8114.114.114.114,就解决了:

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