Azure AKS node access box without public IPs.

1. Deploy access box pod kubectl --kubeconfig k.yaml apply -f accessbox.yaml

2. Make sure it is running: kubectl --kubeconfig k.yaml get po

1. Go to Azure dashboard -> VMSS -> Instance -> Connect -> SSH -> Click step3 "Replace/reset your SSH private key". Save the private key as key.pem

2. Go back to Azure dashboard -> VMSS -> Instance, click "Upgrade", copy "Private IP address"

1. Exec into the pod kubectl --kubeconfig k.yaml exec accessbox -it -- /bin/bash

2. Paste the private key key.pem got from step "Credential" vi key.pem

3. chmod 400 key.pem

4. SSH to the node ssh -i key.pem azureuser@<Private IP address>