kubespray/roles/bootstrap-os/tasks/bootstrap-amazon.yml

---
- name: Enable EPEL repo for Amazon Linux
  yum_repository:
    name: epel
    file: epel
    description: Extra Packages for Enterprise Linux 7 - $basearch
    baseurl: http://download.fedoraproject.org/pub/epel/7/$basearch
    gpgcheck: yes
    gpgkey: http://download.fedoraproject.org/pub/epel/RPM-GPG-KEY-EPEL-7
    skip_if_unavailable: yes
    enabled: yes
    repo_gpgcheck: no
  when: epel_enabled