安装CentOS7.4后用ifconfig命令错误,然后安装使用它的命令出现Cannot find a valid baseurl for repo: base/7/x86_6

本文详细介绍了如何解决CentOS7.4系统在未连接网络的情况下,无法通过yum命令安装软件的问题。主要步骤包括修改网络配置文件使网络启动时自动开启,然后重启网络服务。

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Cannot find a valid baseurl for repo: base/7/x86_6

 

出现这个原因是:安装的原生的CentOS7.4是没有联网的,需要手动打开网络。。

        步骤1:打开 vi /etc/sysconfig/network-scripts/ifcfg-eth0(每个机子都可能不一样,但格式会是“ifcfg-eth数字”),把ONBOOT=no,改为ONBOOT=yes

       步骤2:重启网络:service network restart

然后就可以使用yum命令安装了    

 

第一步出现这个问题[root@192 cxy]# sudo yum update -y && sudo reboot 已加载插件:fastestmirror, langpacks Determining fastest mirrors Could not retrieve mirrorlist http://mirrorlist.centos.org/?release=7&arch=x86_64&repo=os&infra=stock error was 14: curl#7 - "Failed connect to mirrorlist.centos.org:80; 拒绝连接" One of the configured repositories failed (未知), 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 [root@192 cxy]#
03-11
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