新手初学CentOS7——安装lnmp1.6-full.tar.gz失败，出现以下错误

程霖

1.安装失败，显示以下错误：
   Checking ...
   Error: Nginx install failed.
   Error: MySQL install failed.
   Error: PHP install failed.
   Sorry, Failed to install LNMP!
   Please visit https://bbs.vpser.net/forum-25-1.html feedback errors and logs.
   You can download /root/lnmp-install.log from your server,and upload lnmp-install.log to LNMP Forum.
2.在lnmp-install.log的错误日志下查看出现重复以下错误：
file:///mnt/cdrom/repodata/repomd.xml: [Errno 14] curl#37 - "Couldn't open file /mnt/cdrom/repodata/repomd.xml"
正在尝试其它镜像。


One of the configured repositories failed (CentOS-7 - Media),
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=c7-media ...

     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 c7-media
        or
            subscription-manager repos --disable=c7-media

     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=c7-media.skip_if_unavailable=true

failure: repodata/repomd.xml from c7-media: [Errno 256] No more mirrors to try.

程霖

已解决。
原因如下：
1.错误提示在挂载光盘的位置下：file:///mnt/cdrom/repodata/repomd.xml: [Errno 14] curl#37 - "Couldn't open file /mnt/cdrom/repodata/repomd.xml"
2.挂载光盘是否在挂载中：cd /mnt/cdrom/Packages，显示为空，即已卸载光盘,未挂载光盘
3.重新挂载光盘：mount /dev/sr0 /mnt/cdrom
4.接着开始重新安装，安装成功。安装步骤在官方网站：lnmp:https://lnmp.org/install.html


补充内容 (2019-8-8 15:15):
原因：修改了SELinux文件硬盘重启之后yum的本地源没有挂载上去，要重新挂载这样yum源才能生效