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

关键字： Docker、安装、install、

问题

安装Docker 出现错误，安装命令如下：

sudo yum install docker-ce

出现以下问题：

failure: repodata/repomd.xml from docker-ce-stable: [Errno 256] No more mirrors to try.
https://download.docker.com/linux/centos/2.1903/x86_64/stable/repodata/repomd.xml: [Errno 14] HTTPS Error 404 - Not Found

详细问题如下：

Loaded plugins: fastestmirror
Loading mirror speeds from cached hostfile
base                                                               | 3.1 kB  00:00:00
https://download.docker.com/linux/centos/2.1903/x86_64/stable/repodata/repomd.xml: [Errno 14] HTTPS Error 404 - Not Found
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/2.1903/x86_64/stable/repodata/repomd.xml: [Errno 14] HTTPS Error 404 - Not Found

查阅发现是 Docker 配置问题。

解决方案

• 添加 docker仓库

yum-config-manager --add-repo https://download.docker.com/linux/centos/docker-ce.repo

• 编辑 /etc/yum.repos.d/docker-ce.repo

sudo vi /etc/yum.repos.d/docker-ce.repo

• 修改 baseurl

# baseurl=https://download.docker.com/linux/centos/$releasever/$basearch/stable
# 修改成下面地址
baseurl=https://download.docker.com/linux/centos/7/$basearch/stable 

问题已经解决

• 参考链接：https://forums.docker.com/t/docker-ce-stable-x86-64-repo-not-available-https-error-404-not-found-https-download-docker-com-linux-centos-7server-x86-64-stable-repodata-repomd-xml/98965

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