centos7 yum源出错记录

遇到的错误，记录一下

错误如下：

yum install vim
Loaded plugins: fastestmirror
^Chttps://download.docker.com/linux/centos/7/x86_64/stable/repodata/repomd.xml: [Errno 14] curl#56 - "Callback aborted"
Trying other mirror.




 One of the configured repositories failed (Docker CE Stable - x86_64),
 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=docker-ce-stable ...


     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 docker-ce-stable
        or
            subscription-manager repos --disable=docker-ce-stable


     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=docker-ce-stable.skip_if_unavailable=true


failure: repodata/repomd.xml from docker-ce-stable: [Errno 256] No more mirrors to try.

https://download.docker.com/linux/centos/7/x86_64/stable/repodata/repomd.xml: [Errno 14] curl#56 - "Callback aborted"

解决：把/etc/yum.repos.d/中docker相关的 docker.repo这些全删除了，应该是之前为了下载docker最新版下载了这些yum源，删除之后再安装就正常了