Linux下的Cannot find a valid baseurl for repo: base/7/x86_64问题记载

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Linux学习安装docker记载

1、安装尝试安装docker出现Cannot find a valid baseurl for repo: base/7/x86_64问题

[root@localhost ~]# yum install docker
Loaded plugins: fastestmirror
Could not retrieve mirrorlist http://mirrorlist.centos.org/?release=7&arch=x86_64&repo=os&in
fra=stock error was
14: curl#7 - "Failed connect to mirrorlist.centos.org:80; Operation now in progress"


 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

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

解决方案：

1、查看是否联网，执行ping命令是否能访问网站：ping www.baidu.com
2、进入/etc/sysconfig/network-scripts/ifcfg-ens（enp03s）这个可以执行ip addr命令查看

1.首先在网卡文件中，确保ONBOOT=yes ,如果设为静态的ip，则需要加上ipaddr、gateway、netmask设个属性
2. 按esc 后按（: wq） 退出编辑文件
2.重启网络：service network restart

3、更换linux的rpmoforge源

1.mv /etc/yum.repos.d/CentOS-Base.repo /etc/yum.repos.d/CentOS-Base.repo.backup
2.wget -O /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-7.repo
3.curl -o /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-7.repo

然后就可以使用了

再次安装了一次docker显示这是最新版的docker了，不需要再次下载

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