Centos7 yum 报错“Could not resolve host: mirrorlist.centos.org; Unknown error“

bash 复制代码
[root@localhost ~]# yum install net-tools
Loaded plugins: fastestmirror
Loading mirror speeds from cached hostfile
Could not retrieve mirrorlist http://mirrorlist.centos.org/?release=7&arch=x86_64&repo=os&infra=stock error was
14: curl#6 - "Could not resolve host: mirrorlist.centos.org; Unknown error"


 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. Run the command with the repository temporarily disabled
            yum --disablerepo=<repoid> ...

     4. Disable the repository permanently, 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>
        or
            subscription-manager repos --disable=<repoid>

     5. 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

Cannot find a valid baseurl for repo: base/7/x86_64

yum install xxx报错!

解决方式

bash 复制代码
[root@localhost ~]# 
sed -i s/mirror.centos.org/vault.centos.org/g /etc/yum.repos.d/*.repo
sed -i s/^#.*baseurl=http/baseurl=http/g /etc/yum.repos.d/*.repo
sed -i s/^mirrorlist=http/#mirrorlist=http/g /etc/yum.repos.d/*.repo
 
sed -i 's/mirrorlist/#mirrorlist/g' /etc/yum.repos.d/CentOS-*
sed -i 's|#baseurl=http://mirror.centos.org|baseurl=http://vault.centos.org|g' /etc/yum.repos.d/CentOS-*
更新yum镜像
bash 复制代码
[root@localhost ~]# mv /etc/yum.repos.d/CentOS-Base.repo /etc/yum.repos.d/CentOS-Base.repo.backup
[root@localhost ~]# curl -o /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-7.repo
清除缓存,重新运行
bash 复制代码
[root@localhost ~]# yum clean all
[root@localhost ~]# yum makecache

[root@localhost ~]# yum install -y net-tools


Loaded plugins: fastestmirror
Loading mirror speeds from cached hostfile
 * base: mirrors.aliyun.com
 * extras: mirrors.aliyun.com
 * updates: mirrors.aliyun.com
Resolving Dependencies
--> Running transaction check
---> Package net-tools.x86_64 0:2.0-0.25.20131004git.el7 will be installed
--> Finished Dependency Resolution

Dependencies Resolved

=======================================================================================================
 Package               Arch               Version                               Repository        Size
=======================================================================================================
Installing:
 net-tools             x86_64             2.0-0.25.20131004git.el7              base             306 k

Transaction Summary
=======================================================================================================
Install  1 Package
...
相关推荐
Miracle&38 分钟前
2.TCP深度解析:握手、挥手、状态机、流量与拥塞控制
linux·网络·tcp/ip
专注API从业者1 小时前
Python/Java 代码示例:手把手教程调用 1688 API 获取商品详情实时数据
java·linux·数据库·python
Ribou1 小时前
Ubuntu 24.04.2安装k8s 1.33.4 配置cilium
linux·ubuntu·kubernetes
tan180°2 小时前
Boost搜索引擎 网络库与前端(4)
linux·网络·c++·搜索引擎
Mr. Cao code3 小时前
Docker:颠覆传统虚拟化的轻量级革命
linux·运维·ubuntu·docker·容器
抓饼先生3 小时前
Linux control group笔记
linux·笔记·bash
挺6的还4 小时前
25.线程概念和控制(二)
linux
wanhengidc4 小时前
云手机运行流畅,秒开不卡顿
运维·网络·科技·游戏·智能手机
您的通讯录好友4 小时前
conda环境导出
linux·windows·conda
笨小孩@GF 知行合一4 小时前
OSPF实验:外部路由引入
运维·网络·hcip·数通·ospf