centOS使用Ansible

問題

1. 安裝epel源rpm -iUvh http://dl.Fedoraproject.org/pub/epel/7/x86_64/e/epel-release-7-5.noarch.rpm 後，執行yum install ansible報錯

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.

解決：

yum remove epel-release
wget http://dl.fedoraproject.org/pub/epel/7/x86_64/e/epel-release-7-9.noarch.rpm 
yum install ansible

更多參考 https://unix.stackexchange.com/questions/345124/dont-work-yum-update-yum-doesnt-have-enough-cached-data-to-continue