I have k8s cluster running in Azure VMs with Azure as cloud provider configured using kubeadm My goal is to add the VMSS for auto-scaling, my CA is running fine and can scale up the VMs in VMSS but it is not able to register node to the cluster.

• Updated cloud config file.
• Updated kubeadm config file.
• Updated cluster-autoscaler-vmss.yaml accordingly.

Refrence:

• https://github.com/kubernetes/autoscaler/blob/master/cluster-autoscaler/FAQ.md#im-running-cluster-with-nodes-in-multiple-zones-for-ha-purposes-is-that-supported-by-cluster-autoscaler

• https://github.com/kubernetes/cloud-provider-azure/blob/master/docs/cloud-provider-config.md

• https://github.com/kubernetes/autoscaler/tree/master/cluster-autoscaler/cloudprovider/azure

cluster-autoscaler-vmss.yaml

            - --cloud-config=/etc/kubernetes/cloud.conf
            - --kubeconfig=/etc/kubernetes/admin.conf
            - --nodes=1:10:k8svmss 
            - --node-group-auto-discovery=label:foo=bar

Expect: Node to autoscale and join cluster.