CentOS7 执行yum命令报错已解决

深碍√TFBOYSˉ_ 2022-10-31 01:42 722阅读 0赞

## 报错如下 ##

http://mirrors.cloud.aliyuncs.com/centos/7/os/x86_64/repodata/repomd.xml: [Errno 14] curl#6 - "Could not resolve host: mirrors.cloud.aliyuncs.com; 未知的错误" 正在尝试其它镜像。

One of the configured repositories failed (Unknown),  
     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 <repoid>  
      
      
         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=<repoid>.skip_if_unavailable=true

## 解决办法 ##

*  找到并打开目录下文件`/etc/resolv.conf`，添加下面一行：

nameserver 114.114.114.114 （这是国内的dns服务器系统，谷歌的可以使用8.8.8.8）

*  保存后**重启系统**或者**重启网卡**，输入命令

reboot （重启系统）

service network restart（重启网卡）

*  最后**更新yum**即可，，输入命令

yum update