wget http://dl.fedoraproject.org/pub/epel/6/x86_64/epel-release-6-8.noarch.rpm
sudo rpm -Uvh epel-release*rpm

但是,当我这样做时,我收到以下消息：

package epel-release-6-8.9.amzn1.noarch (which is newer than epel-release-6-8.noarch) is already installed

这对我来说意味着EPEL已经可用,但如果我这样做：

sudo yum install fail2ban

我明白了：

Loaded plugins: priorities,security,update-motd,upgrade-helper
amzn-main                                                                                   | 2.1 kB     00:00
amzn-updates                                                                                | 2.3 kB     00:00
Setting up Install Process
No package fail2ban available.
Error: Nothing to do

我认为我误解了一些东西但是如何从EPEL安装？

编辑：我刚刚完成以下操作,发现repo未启用：

yum repolist all

那么如何在EC2上启用回购？