ruby-on-rails - 在 CentOS 7 上安装 Jekyll 错误

Question

我正在尝试在 CentOS 7 上安装 Jekyll，因此我对操作系统进行了全新安装，并开始遵循以下步骤:

http://www.resilvered.com/blog/2014/08/26/Installing-Jekyll-on-CentOS-7/

第 1 步有效，但如果我运行第 2 步，则会收到此错误:

[jxsmith@localhost ~]$ sudo yum install nodejs npm ruby ruby-devel rubygems git
Loaded plugins: fastestmirror, langpacks


 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 retrieve metalink for repository: epel/x86_64. Please verify its path and try again
[jxsmith@localhost ~]$

有人可以告诉我如何解决这个问题

Answer 1

全新安装后您是否更新了 yum？如果没有，请更新它并按照相同的步骤操作。它会起作用的。

以 root 身份登录并应用命令 yum update