### Darwin
wget https://storage.googleapis.com/kubernetes-release/release/v0.17.0/bin/darwin/amd64/kubectl
### Linux
wget https://storage.googleapis.com/kubernetes-release/release/v0.17.0/bin/linux/amd64/kubectl
chmod +x kubectl
mv kubectl /usr/local/bin/
ssh -f -nNT -L 8080:127.0.0.1:8080 core@<master-public-ip>