So you have created and configured an AKS cluster and life is good. You think. As time goes by, you keep adding features to your cluster and eventually something doesnt work as expected. Sounds familiar?
I my particular case I was trying to mount an Azure File Share to my AKS cluster with the
NFS protocol, but without any success. I was getting a pretty useful error message when running
kubectl describe on the problematic pod:
Output: mount.nfs: access denied by server while mounting storageaccountname.file.core.windows.net:/storageaccountname/fileshareName
Microsoft troubleshooting guide pointed me in the direction that the node probably was missing
To install packages to the underlying Ubuntu
Virtual Machine Scale Set I needed
SSH access to the node. Pretty straight forward you think? Think again.
This is where this neat little trick comes in handy:
- List all your nodes by running
kubectl get nodes
- Find the node you want to SSH into
kubectl debug node/node-name -it --image=mcr.microsoft.com/aks/fundamental/base-ubuntu:v0.0.11
- Enjoy root access.