yum -v list kubelet –show-duplicates
yum install kubelet-1.15.3-0 kubeadm-1.15.3-0 kubectl-1.15.3-0
참고: https://www.devopsart.com/2020/01/how-to-install-specific-kubernetes.html
<kubernetes 설치하기>
참고: https://www.devopsart.com/2019/11/step-by-step-installation-of-latest.html