Clarification to Autoscaling Docs RE: multiple node pools

[sgibson91]

Hello!

These docs on auto-scaling should clarify that the labelling method described for efficiently scaling down is only useful if the Cloud provider supports multiple node pools with different labels in a single Kubernetes cluster. For instance, multiple node pools are not presently supported by Azure (though see Azure/AKS#287) so Azure users would need to be mindful that their cluster is scaling down efficiently.

[consideRatio]

@sgibson91 it seems like AKS now supports multiple node pools as of november 2019 - Azure/AKS#287 (comment). I'll go ahead and close this.

[sgibson91]

Yes, I can bring these docs across here if you like? https://alan-turing-institute.github.io/hub23-deploy/deploy-k8s-cluster-multiple-nodepools/

Also a new flag --labels is in preview for applying labels to new nodes within a pool when they automatically scale (up to now, they had to be manually applied) https://docs.microsoft.com/en-us/cli/azure/ext/aks-preview/aks/nodepool?view=azure-cli-latest#ext_aks_preview_az_aks_nodepool_add

[consideRatio]

;D wow what a resource! Well if updating this documentation, that resource could be referenced perhaps? Awesome documentation btw, I really appreciate it is public ❤️

[sgibson91]

Closed by #1850

[consideRatio]

Another closed issue!!!! Wieeee!!! 🎉