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yum install docker-compose后報錯：

Loaded plugins: fastestmirror

base ????????????????????????????????????????????????????????????????????????????????| 3.6 kB ?00:00:00

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. Run the command with the repository temporarily disabled

yum --disablerepo= ...

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

or

subscription-manager repos --disable=

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=.skip_if_unavailable=true

Cannot retrieve metalink for repository: epel/x86_64. Please verify its path and try again

yum -y install epel-release

rpm -ivh http://dl.fedoraproject.org/pub/epel/epel-release-latest-7.noarch.rpm

Retrieving http://dl.fedoraproject.org/pub/epel/epel-release-latest-7.noarch.rpm

curl: (6) Could not resolve host: dl.fedoraproject.org; Unknown error

error: skipping http://dl.fedoraproject.org/pub/epel/epel-release-latest-7.noarch.rpm - transfer failed

ping了一下ip，發(fā)現(xiàn)能ping通，但是ping百度，卻無法ping通，說明無法解析域名

于是找了個解決辦法

yum安裝時錯誤ERRNO 14 couldn’t resolve host 解決辦法

說是DNS服務器錯誤。是修改了/etc/resolv.conf

添加了一個nameserver8.8.8.8完成

來自：blog.csdn.net/spyiu/article/details/25163101

再次ping百度，可以ping通 ，通過

rpm -ivh

http://dl.fedoraproject.org/pub/epel/epel-release-latest-7.noarch.rpm

安裝docker-compose成功