docker-ce 未显示在安装了 repo 的 `yum list available` 中

Question

编辑：如果可能的话，我仍然希望得到这个问题的答案，但我已经设法通过直接安装各个 rpms 而不是依靠 yum 来解决它。

我正在努力在 CentOS 7 机器上安装 docker-ce。我将它安装在其他三个盒子上，但第四个给了我问题。我正在按照此处的说明进行操作。安装 repo 似乎有效，但docker-ce无论我尝试什么，似乎都不可用。

$ sudo yum-config-manager \
>     --add-repo \
>     https://download.docker.com/linux/centos/docker-ce.repo
Loaded plugins: fastestmirror, langpacks
adding repo from: https://download.docker.com/linux/centos/docker-ce.repo
grabbing file https://download.docker.com/linux/centos/docker-ce.repo to /etc/yum.repos.d/docker-ce.repo
repo saved to /etc/yum.repos.d/docker-ce.repo

$ ls /etc/yum.repos.d/docker-ce.repo
/etc/yum.repos.d/docker-ce.repo

# This should include docker-ce, docker-ce-cli, and a few other things
$ yum --disablerepo="*" --enablerepo="docker-ce-stable" list available
Loaded plugins: fastestmirror, langpacks
Loading mirror speeds from cached hostfile
Available Packages
containerd.io.x86_64                                 1.2.6-3.3.el7                                  docker-ce-stable

$ sudo yum install docker-ce
Loaded plugins: fastestmirror, langpacks
Loading mirror speeds from cached hostfile
 * base: mirror.fileplanet.com
 * epel: mirror.colorado.edu
 * extras: mirrors.tummy.com
 * updates: mirrors.tummy.com
No package docker-ce available.
Error: Nothing to do

回购显然已启用。我可以containerd.io从 repo安装。看起来回购中没有其他可用的东西。即使我从另一个可以工作的 CentOS7 框中复制 repo，我仍然看不到 docker-ce 包。这个 repo 今晚在其他三个盒子上运行良好。

任何帮助，将不胜感激。提前致谢！

编辑：

跑步yum clean all并 yum update没有帮助。

$ rm /etc/yum.repos.d/docker-ce.repo
rm: remove regular file ‘/etc/yum.repos.d/docker-ce.repo’? y

$ yum clean all
Loaded plugins: fastestmirror, langpacks
Cleaning repos: base epel extras updates
Cleaning up list of fastest mirrors
Other repos take up 18 M of disk space (use --verbose for details)

$ yum update
Loaded plugins: fastestmirror, langpacks
Determining fastest mirrors
epel/x86_64/metalink                                                                         |  14 kB  00:00:00
 * base: repos.forethought.net
 * epel: d2lzkl7pfhq30w.cloudfront.net
 * extras: repos.forethought.net
 * updates: repos.forethought.net
base                                                                                         | 3.6 kB  00:00:00
epel                                                                                         | 5.4 kB  00:00:00
extras                                                                                       | 2.9 kB  00:00:00
updates                                                                                      | 2.9 kB  00:00:00
(1/7): base/7/x86_64/group_gz                                                                | 165 kB  00:00:00
(2/7): base/7/x86_64/primary_db                                                              | 6.0 MB  00:00:00
(3/7): epel/x86_64/group_gz                                                                  |  90 kB  00:00:00
(4/7): epel/x86_64/updateinfo                                                                | 1.0 MB  00:00:00
(5/7): extras/7/x86_64/primary_db                                                            | 153 kB  00:00:00
(6/7): updates/7/x86_64/primary_db                                                           | 2.8 MB  00:00:00
(7/7): epel/x86_64/primary_db                                                                | 6.9 MB  00:00:01
No packages marked for update

$ yum-config-manager --add-repo https://download.docker.com/linux/centos/docker-ce.repo
Loaded plugins: fastestmirror, langpacks
adding repo from: https://download.docker.com/linux/centos/docker-ce.repo
grabbing file https://download.docker.com/linux/centos/docker-ce.repo to /etc/yum.repos.d/docker-ce.repo
repo saved to /etc/yum.repos.d/docker-ce.repo

$ yum list available | grep docker-ce
containerd.io.x86_64                      1.2.10-3.2.el7                 docker-ce-stable

$ yum install docker-ce
Loaded plugins: fastestmirror, langpacks
Loading mirror speeds from cached hostfile
 * base: repos.forethought.net
 * epel: d2lzkl7pfhq30w.cloudfront.net
 * extras: repos.forethought.net
 * updates: repos.forethought.net
No package docker-ce available.
Error: Nothing to do

$ yum --disablerepo="*" --enablerepo="docker-ce-stable" list available
Loaded plugins: fastestmirror, langpacks
Loading mirror speeds from cached hostfile
Available Packages
containerd.io.x86_64                                 1.2.10-3.2.el7                                 docker-ce-stable

Answer 1

有很多方法可以强制 yum 排除 repo。其中之一是通过在exclude上设置指令/etc/yum.conf。此配置优先于--disablerepo和--enablerepo标志。

您必须检查您的/etc/yum.conf，删除排除或使用--disableexcludes=all标志强制 yum 忽略它。

--disableexcludes=[all|main|repoid]
Disable  the excludes defined in your config files. Takes one of three options:

all == disable all excludes
main == disable excludes defined in [main] in yum.conf
repoid == disable excludes defined for that repo

例如：

yum --disablerepo="*" --enablerepo="docker-ce-stable" --disableexcludes=all list available