https://dl.k8s.io/release/v1.19.6/bin/linux/amd64/kubectl
https://get.helm.sh/helm-v2.16.6-linux-amd64.tar.gz
https://get.helm.sh/helm-v3.3.4-linux-amd64.tar.gz
https://github.com/chartmuseum/helm-push/releases/download/v0.9.0/helm-push_0.9.0_linux_amd64.tar.gz
https://github.com/rancher/rke/releases/download/v1.2.4/rke_linux-amd64