metrics-server 을 설치 합니다.
cat << EOF | helm upgrade --install metrics-server stable/metrics-server --namespace kube-system --values -
args:
# enable this if you have self-signed certificates
- --kubelet-insecure-tls
- --kubelet-preferred-address-types=InternalIP,InternalDNS,ExternalDNS,ExternalIP,Hostname
EOF