centOS使用Ansible

问题

1. 安装epel源rpm -iUvh http://dl.Fedoraproject.org/pub/epel/7/x86_64/e/epel-release-7-5.noarch.rpm 后，执行yum install ansible报错

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.

解决：

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

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