Enable EPEL repository on Oracle Linux 9

Make sure install the [oracle-epel-release-el9] package.

dnf install oracle-epel-release-el9

Enable EPEL repository:

dnf config-manager --enable ol9_developer_EPEL
dnf update

Install packages from EPEL repository:

dnf install certbot python3-certbot-nginx
dnf install fail2ban
dnf install etckeeper

Amazon Linux 2 add fail2ban from epel

Amazon Linux team did a great work to make it easy and clean at same time.

 The epel repo is no longer enable by default like the olden days.

This keep the rpm packages as slim as possible.

To enable epel, just one command:

# sudo amazon-linux-extras install epel
# sudo yum update

# sudo yum install fail2ban